How to use a magnet for welding

Magnets for welding: functions and advantages, types of devices and self-production

Today there are quite a few types of welding equipment . Often, various holders and clamping elements are used to secure workpieces. The presence of such additional devices is especially important for those cases when it is necessary to fasten two parts at different angles.

What are magnets for welding? Fastening workpieces by welding may require the performer, for example, to position the elements being processed at a certain angle on one surface. Magnets are very useful when processing profiled pipes. You can improve the quality and convenience of welding work by using various holders and angles.

Often craftsmen use the following devices:

1. Magnetic welding angles (detachable or permanent);
2. Fastening elements (for fixing the position of the workpiece);
3. Clamps (used to clamp certain parts);
4. Spacers (designed to create gaps).

Features and Benefits

The advantages of these devices include the fact that with their help you can save time on preparing products for welding. These details allow you to:

1. Reduce work complexity. The workpiece is secured very simply.
2. Ability to hold the workpiece in any position.
3. The small dimensions of the device greatly simplify the work.
4. Automate welding. Magnets make it possible to quickly disconnect or connect the fastening element.

The simplest products have simple welds, but often they have complex seams and configurations. The accuracy must remain at a high level.

Such welding magnets are characterized by a very simple design. A pair of metal plates with a magnet between them. The most common form is that of a house with a roof and a trimmed ridge. There are other, more complex options for processing products in all three areas.

Magnetic holders can be switched off or permanent. These devices make it possible to fix elements by simply turning them on.

They are good because the locking can be stopped by simply turning the corresponding switch. This also makes it easier to clean the magnetized surface from small pieces of iron and shavings.

Also, magnet angles are universal and standard.

Magnetic clamps

These structures allow you to pull elements together, temporarily fixing them. The most common form is in the form of a “P” symbol laid on its side. One of the sides serves as a permanent lock, and the other is equipped with a screw clamp. The dimensions of the workpieces that are fixed with clamps are limited only by their characteristics. It is very simple to use - the elements are located inside the structure, after which they are tightened with a threaded screw.

Pipe spacers

If you need to make small gaps between the surfaces being processed, then you can make the simplest version of a spacer from a piece of reinforcement or pipe. However, to save time on this procedure, you can purchase a factory product.

The essence of this device is also based on a screw. But this design works by expanding, not compressing.

Making a switchable magnet

The cost of magnetic devices varies from twenty dollars for the simplest devices. Universal type models, of course, will cost a little more. The most expensive devices include switchable magnets, but they can be made with your own hands.

So, to do this you need to do the following:

1. Cut plates from a steel sheet, for example, in the shape of a triangle. The corners must be clearly marked and measured. The end parts must be cleaned with a file.
2. You can get a magnet from any unnecessary acoustics (from columns).

That is, the metal plates must be cut in accordance with the dimensions of the magnet. Then the structure is assembled. The magnet is placed between metal plates, in which holes are made in advance for the location of the clamping bolts.

To prevent the magnet placed inside the device from becoming contaminated with metal scraps and shavings, plugs can be made. The holder can be given any shape, the most important thing is to clearly maintain each of the corners.

Magnets designed for welding activities will be useful to any welder. Even if the master has an assistant who supports the workpieces being processed, it is impossible to achieve the most accurate parameters and angles.

Holders based on magnets will firmly hold the elements, and their installation and dismantling is very simple and does not require a lot of time from the performer.

Source: https://tokar.guru/svarka/opisanie-i-harakteristiki-magnitnyh-ugolkov-dlya-svarki.html

Magnets for welding

Quite often a situation arises when the preparatory work before starting welding procedures takes much more time than the welding itself. The lion's share of time is spent on stable fixation of all equipment, materials and parts.

If you neglect the stable fixation of all the necessary elements, then the quality of the final result, even despite the high level of qualification of the master, will leave much to be desired.

In order to facilitate the preparatory work before welding associated with the fixation of all working elements, special fasteners are used.

Classification and main purpose

Very often, fastening materials and parts before welding is done using improvised objects. This design is very unreliable; it can fall apart literally from one touch of the filler material.

The unfortunate welder has no choice but to start the preparatory procedures from the very beginning.

However, much worse situations occur when the fasteners become loose or completely destroyed during operation, after the filler material has melted and welded to the working surface.

Professionals in their field, in order to avoid the situations described above, use specialized fasteners that can significantly simplify the preparatory procedures before welding and not be afraid of disturbing the fixation of materials and parts during the welding process. On the modern market of equipment for welding work there is a fairly wide range of different fasteners, which are divided into several main types:

• installation fasteners - their purpose is to install working elements in the required position;
• fasteners - with the help of these products, materials and welding equipment can be quite easily fixed in the required position;
• installation and fastening parts - this type combines the two previous types in one product;
• clamp - this type of fastening will allow you to fix the working surfaces of metal products relative to each other in the required position without any problems;
• clamps are used when working with small products and metal parts;
• spacers allow you to align already fixed parts as required for welding procedures.

Magnets

Magnets for welding work belong to the category of installation and fastening products. With their help, you can simultaneously install the part and fix it in the desired position without any problems. This possibility is achieved thanks to fairly powerful magnets that are located in the internal structure of the fastener.

Advantages and disadvantages

Regardless of the main purpose of the products, there are no products that would be ideal. Magnets for welding are no exception, but they have an impressive list of advantages and only a couple of disadvantages. The advantages of the product include the following factors:

• no need to use fixing elements; thanks to magnets, installing and fastening the part in the desired position does not take much time and effort;
• a wide range of models, each of which allows you to fix the element at a certain inclination and angle;
• thanks to the use of magnets, preparatory work lasts much less than using alternative fixation methods;
• the simple design of the product allows you to easily fix the parts in the required position;
• High-end models have a switch that allows you to turn the magnetic field on and off;
• Magnets for welding consist of only a few parts, making their cleaning process very simple.

There are only two disadvantages:

• availability in the assortment only in specialized stores;
• impossibility of use for non-metallic parts (wood, plastic, etc.).

Classification of magnets for welding work

Magnets for welding work belong to the category of installation and fastening products, in turn they are divided into two types:

• universal purpose products;
• squares.

It is worth considering both types in more detail.

Corner Magnets for Welding

Models included in this category are the most common among welders. There are various versions that allow you to fasten two parts relative to each other at a certain angle. The number of possible options depends on the type of welding angle magnet. They can be divided into three groups:

• arrow-shaped - such products allow you to fasten parts at three different angles (35, 90 and 135 degrees);
• triangular shape - unlike the product described above, this magnet has a triangular shape, but also allows you to fasten parts at the angles specified in the previous paragraph;
• in the shape of a hexagon - as the name suggests, this type of square allows you to secure parts in six different positions (30, 45, 60, 75, 90 and 135 degrees).

Magnets for universal welding

As you can understand from the name of the product, it is universal in use. They differ from squares in that they can be used to connect two parts together at any angle. This possibility is achieved thanks to the ability to adjust the working angle of the magnet. It can be used for cylindrical, angular and flat shape parts.

If we draw parallels with products that have a specific purpose, for example, clamps or clamps, then universal magnets outperform them in all respects. Using the magnet is very easy and does not take much time.

How much do welding magnets cost?

Naturally, the higher the quality of the product and the wider its capabilities, the higher the price it is sold at. During the purchasing process, you need to choose the model whose operation will involve all the functions, since it makes no sense to overpay for various “bells and whistles” and not use them.

The specific price of a welding magnet depends on several points:

• Manufacturer country;
• brand;
• type of magnets;
• maximum possible fixation force;
• angular adjustment range (applies exclusively to universal-use products);
• the ability to turn on or off the magnetic field of an object.

As you can understand, the specific price of a product depends on many factors, so it is not possible to name it exactly.

How to choose?

Many people have a question: “How to choose the required magnet model for welding?” By following a short instruction, it is very easy to find the answer to this question. You need to choose a magnet for welding as follows.

• You need to make sure that the product has absolutely no effect on the welding equipment. Almost all models satisfy this point, however, budget products produced in the Celestial Empire can disrupt the stability of the welding arc.
• Required field power. Naturally, the higher this value, the better. However, along with the increase in strength, the cost of the product also increases. The most powerful representatives are capable of holding parts weighing up to thirty-five kilograms.
• Number of possible fixation positions.
• Possibility of turning on and off the magnetic field.
• Is the magnet model a universal type?

Naturally, like goods for other purposes, welding magnets can be sold at exorbitant prices solely because of the manufacturer’s brand, bright appearance, etc. It is not worth spending a significant amount on purchasing this product if it will be used extremely rarely.

Welding magnets are products that can significantly facilitate both the preparatory work before welding and the process itself. With their help, fixing metal parts to each other does not cause difficulties, and the welding process can be performed alone.

Source: https://svarkagid.com/magnity-dlja-svarki/

Magnets for welding: types, advantages, tips when choosing a product

Quite often, the welding process takes much less time than preparation. Usually what takes the most time is fixing all the elements in the desired position. This is the most important point, since the quality of the work performed depends on it. Special fasteners for welding will help make this task easier.

Types of fasteners and their purpose

It’s a shame if, after a long installation and fastening of the elements, the entire structure falls apart at the touch of an electrode. All that remains is to reassemble the entire structure. However, the most unpleasant situation occurs if the element is welded, but not as needed. For example, it became deformed or moved while the metal was cooling.

To prevent such unpleasant situations, special devices were invented to facilitate the welding process. In the modern world there are many different products and they are all divided into several categories:

• Installation devices - allow you to install the element in the desired position.
• Fastening devices - fix the part in a certain position.
• Installation and fastening products - allow you to install and fix the part in a certain position.
• Clamps are necessary for fastening metal parts together.
• Clamps - used for small metal products.
• Spacers - used to align parts.

Advantages of magnets

Magnets for welding belong to the group of installation and fastening devices. That is, they allow you to install an element and fix it in a certain position. This is ensured by powerful magnets installed in the product.

Why are these devices so good? Let's figure it out.

• Simple and fast fastening. To connect 2 metal parts, you don't need to fiddle with them for a long time.
• Possibility of installation at a certain angle. As a rule, magnets allow you to fix products at an angle of 45°, 90° and 135°. There are models that, in addition to these values, allow you to install the part at an angle of 30°, 60°, 75°, etc.
• Reduced time consumption. Significantly less time is spent preparing for work.
• No bulky fasteners. Magnets for welding are not distinguished by their large dimensions or complexity of design and operation.
• Presence of a magnetic field activator. Some models have a switch that turns the magnetic field on or off. Thus, the welding magnet can be easily installed or removed.
• Easy to clean from dirt and chips. Most products are dismountable, so you can easily clean the magnet from dirt.

The main disadvantage is that it cannot be used with certain materials , such as wood or anti-magnetic metals.

Types of products

All magnets for welding can be divided into 2 categories:

• squares;
• universal devices.

The first option has the simplest design and the most popularity. With these welding products, you can easily secure 2 parts at a certain angle. The range of available values ​​depends on the shape of the magnet itself:

• arrow-shaped (the ability to install parts at an angle of 45°, 90° and 135°);
• triangular (similar to the previous one);
• hexagonal (30°, 45°, 60°, 75°, 90° and 135°).

Let's move on to the second group. As the name implies, universal devices have greater functionality and application possibilities. The principle of use is quite simple: using magnets and connecting parts, an angle with the required degree is created. The connecting parts can have a flat, angular or cylindrical shape. Thanks to this, you can fasten 2 products in a non-standard position , for example, at an angle of 27°.

The main advantage of such welding devices is the ability to fix parts at a non-standard angle. If we compare universal devices with other products, for example, with clamps, then magnetic varieties have much more capabilities coupled with ease of operation.

Cost of magnets for welding

As you know, the more bells and whistles a device has, the higher its cost and the more carefully you should choose the appropriate model.

The exact cost of a welding product depends on a number of factors:

• Exporting country.
• Manufacturing company.
• Type of device (square or universal device).
• Adhesion forces.
• Possibility of installing non-standard angles (applies to universal devices).
• Presence of a magnetic field activator.

Therefore, it is impossible to guess the exact cost. However, by visiting some online stores, you can determine the average price for certain products.

The arrow-shaped and triangular varieties have the lowest cost (approximately from 400 to 800 rubles). This is justified by the fact that there are many manufacturers from China on the market for such models.

An honorable second place in cost is occupied by hexagonal shapes without a magnetic field switch (from 450 to 900 rubles).

Third place is given to universal devices. The price range for these varieties is from 500 to 1600 rubles.

The most expensive products for welding are carbon-shaped devices with the ability to turn on or deactivate a magnetic field (cost from 2200 to 3400 rubles).

Some tips when choosing a magnet

It is recommended to purchase magnetic products after careful analysis. For example, why buy an expensive device if it will be rarely used, and the main markup is for a well-known brand? Therefore, when choosing a magnet, you should use a few simple rules.

1. Influence on the state of the arc. Almost all models do not have any effect on the welding arc. However, the most budget products (especially from China) may not have this property. Therefore, it is not recommended to buy the cheapest model.
2. The greater the magnetic field power, the better. The best varieties can easily hold objects weighing 35 kg.
3. Number of corners. Similar to the previous point - the more, the better.
4. If finances allow, it is worth purchasing a device with a magnet activator.
5. If it is necessary to weld complex structures, it is recommended to buy universal fixtures.

Magnetic products are quite interesting devices. They allow you to install and fix the metal part without difficulty. Thus, you can weld alone , without the help of a second person. However, purchasing a low-quality or unsuitable magnet can destroy not only pleasant emotions, but also the metal structure.

Source: https://stanok.guru/oborudovanie/svarochnyy-apparat/osobennosti-magnitov-dlya-svarki.html

Types of magnetic holders for welding

Special welding magnets (corners) are used to secure the steel parts being processed, ensuring convenience and comfort in handling them during the welding process. Most often, magnetic corners are used when welding pipes of arbitrary cross-section, as well as sheet or strip blanks, various profiles and other metal products.

Squares

One of the varieties of magnets for welding includes special angles that completely replace bulky clamps and provide fixation of parts at angles of 45, 90, 135 degrees.

There are many designs and variants of such magnets produced by different manufacturers. They differ not only in their working dimensions and mounting angles, but also in their adhesion strength.

The magnetic clamp or welding angle can have a variety of configurations, providing the ability to set the required mounting angle. Such magnets can have the following designs:

• ordinary squares, through which it is possible to set fixed angles determined by the profile of the workpieces;
• clamp-type fasteners with the ability to adjust the angle of fixation, ensuring their universal use as welding elements on structures of any degree of complexity;
• modern samples of squares with several fixed angles, also related to multifunctional tools and used in organizing complex welding work;
• angles with different clamping forces, designed for both massive elements of welded structures and small (compact) parts.

In addition to all of the above, a permanent or switchable magnet can be built into the fastening samples, allowing you to remove the product without any noticeable effort.

The cost of each magnet model is formed taking into account a number of indicators relating to the design used (the ability to set different angles, their adjustment and magnet power). It ranges from 300-400 rubles for a standard sample (800-900 rubles for a set of standard corners) to 3000-5000 rubles for special professional models.

Each magnetic welding holder has its own performance characteristics that determine its sales price. However, for those who are not “fixated” on branded products and want to save money on purchases, the option of making them yourself is always possible.

Advantages of magnetic mass holders

The principle of operation of the holder in the form of a magnet also extends to the so-called “ground”, which is directly connected to the workpiece during welding. Its use during electric welding work is quite justified, since it provides the welder with tangible benefits, expressed in the following:

• due to the use of a reliable, compact and quickly established contact, the operator’s freedom of action is noticeably increased;
• The magnetic corner weight holder is attached before welding begins, so that its installation does not require any outside assistance;
• the possibility of reliable and stable connection with almost any serviced surface;
• simplicity of the magnet design, which does not contain any complex built-in elements;
• the ability to withstand loads and stresses over a wide range of mechanical influences, which ensures sufficient fastening strength of metal structures;
• and, finally, a significant contact area with the workpiece, guaranteeing reliable closure with it during welding.

However, the method of fixing mass has its drawbacks. The main one is that it is inconvenient to install a magnet on small metal parts (on a rod or fittings, for example).

Another disadvantage of these undoubtedly convenient devices is the impossibility of using them when welding non-ferrous metals, because the magnet does not stick to them.

To all that has been said, it should be added that during welding, small metal shavings and other waste stick to the magnet, which are recommended to be cleaned off with a wire brush.

Taking into account these inconveniences, the use of such a mass is generally justified, since it gives concrete and tangible results.

Homemade magnetic clamps

You can make a magnetic angle for welding with your own hands; it is not difficult, especially since there is more than enough information on the order of the operations performed.

Design

A magnetic fixture or device is typically made from two separate parts. First, there is the contact or point where the lead cable is secured to the holder. Secondly, it is the magnet itself, which can have different shapes and dimensions.

The two parts of the prefabricated product for welding are connected by means of a special fastening, ensuring their reliable coupling. In this case, special attention is paid to the total weight, which should not exceed a certain value.

Thus, magnetic welding triangles from ESAB have a total weight of about 850 grams and guarantee ease of handling.

Taking into account the design features of welding magnets, you can begin to directly assemble them.

Self-production

You will need a fairly “strong” magnet, which can be used as the base of a powerful speaker that has become unusable. Next, you will need to find two sets of thick washers that fit them in size.

And finally, you should stock up on additional fasteners (bolt and nut) necessary to connect the welded cable clamp. When assembling the system, first drill a hole for the bolt in one of the washers (which will serve as a contact pad). After this, it is inserted into the workpiece and welded.

The head of the fastening bolt is ground down with a file to the thickness of the washer itself (flush with the contact plane).

After welding, the mushroom-shaped structure is carefully cleaned with a file, and then a magnet from the speaker is threaded onto it. To complete the work, a second washer is attached to the protruding threaded rod and the end of the cable is secured here, and then the entire structure is tightened with a nut.

At the end of the review, let us draw your attention to the fact that, despite the significant savings when making a welding holder yourself, branded magnets are still more reliable and durable.

Source: https://svaring.com/welding/prinadlezhnosti/magnity-dlja-svarki

Do-it-yourself magnetic welding devices - Metalworker's Guide

Comfort and convenience in any work have never bothered anyone. This also applies to welding. Among the welding tools, there are basic ones and there are auxiliary ones. These include the smallest auxiliary part in size - a wonderful magnetic corner, or, more correctly, a magnetic angle for welding.

Such corners are extremely useful for both artisans and professionals working on stream. Small in size but not in function, these special welding triangles improve the quality of products in general and welds in particular.

Clean Water Welding Gadgets

How to make a welding square?

Here's how they do it:

• While the metal workpieces are precisely and securely fixed, you have more freedom in your actions. Your hands and your attention are concentrated only on the welding seam. Hence the increase in its quality.
• Using a magnetic welding angle, you can prepare and perform all welding work yourself, without outside help. That's labor savings for you. And you also don’t depend on anyone.
• The seam will be neat and precise thanks to the optimal and reliable installation of the workpieces using corners. If your work requires special precision, then the use of angles becomes not a recommendation, but a mandatory condition for welding.
• If you have a large amount of work, you cannot escape without fixing triangles: they will allow you to save your working time to a significant extent.
• It is easiest to weld workpieces of unusual or non-standard shapes using a welding angle with a magnet.
• With corners you can cook not only on horizontal surfaces, but also on vertical ones.
• These squares are useful not only for welding and soldering, but their ability to firmly hold parts is useful when cutting metals.

Types of magnetic squares

Welding magnets can vary in both shape and operating principle:

• A clamp is a flexible square with angles that can be adjusted. An excellent tool to help produce parts of any complexity.
• A simple welding angle with fixed angles and a permanent magnet.
• Switchable magnets for welding are an excellent technical solution for ease of work: after welding, you can turn off their action, the holders “unstick” on their own, which allows you to remove the clamps without effort or any deformation.
• Universal magnetic angles for welding with several standard angles are another excellent technological solution for performing a variety of jobs of varying complexity.
• Angles with different power of action. It is clear that fastening massive workpieces requires fasteners that are powerful in action, just as for small work that requires jewelry precision, they must be compact both in size and in terms of attractive power.
• Three-coordinate and tetrahedral squares using cylinders and ferritic heat-resistant magnets for working in difficult temperature conditions and with workpieces of different sizes and weights.

Choosing the right square: here and now

Dimensions of the square for welding.

Everything is simple here: for simple home welding work, you will need holders that are simple in design. Complex processes involve fasteners with technological bells and whistles - from switchable magnets to heat-resistant options, from simple corners to 3D models.

One way or another, a high-quality magnetic holder for welding must be resistant to significant mechanical loads and have sufficient tensile strength. In the end, we are talking about fixing not fluff, but heavy metal parts. Our squares must be able to fix them completely and irrevocably. Only in such cases will welding holders make sense at all.

If you are engaged in complex welding work, and if you have the opportunity, then it is best to choose high-quality holders with on/off magnets. Such devices will help you turn on or off not just the entire square, but individual edges.

This mode makes it possible to independently work with complex tasks. Corners of this class are usually made of chrome-plated metal with increased strength.

The cost of welding holders cannot be called low; these are not cheap devices. The price depends on the number of standard angles, attraction power, adjustment mechanisms, brand, etc. The simplest copies cost about four hundred rubles, a standard set costs around a thousand rubles. Well, professional magnetic welding devices with technological additions increase in price to 3,000 - 5,000 rubles.

DIY magnetic holder

Working with a magnetic square.

Making your own magnetic corner for welding is a great idea for three reasons:

• This is a real cost savings
• This will be a device that is suitable specifically for your technical needs.
• This is a very simple device, which is quite possible to make even without much practical experience.

What you will need:

• a magnet of any shape, but preferably a round one with a thickness of about 15 mm;
• steel sheet 2 mm thick;
• M6 bolts with nuts.

Welding angle with shut-off.

The tips and steps for making a welding angle are as follows:

1. This device is best made from steel manually, using a grinder or laser. The main thing is to cut the templates with extremely precise angles on the work plane. There should be two templates. Their size should be larger than the diameter of the magnet. We pay special attention to the size and grinding of the corners - the quality of your square will depend on this. It wouldn't hurt to sand the entire surface well: if rust or any defects remain, the strength of the magnet will decrease.
2. The magnet will attract any metal debris in the form of sawdust or shavings. You can get rid of this with the help of a spacer - a special part made of steel, which should be slightly smaller around the perimeter than the steel corner itself. Such a spacer will add additional rigidity to the holder, which will not hurt you. A special through hole is made in it.
3. A magnet can be of different shapes. He is placed inside. Under no circumstances should it protrude beyond the edges of the steel plates. To fix it, you need to make four holes: one in the middle and the other three at the edges.
4. The final stage of assembly is the careful folding of the layers of our “sandwich”, which can be fixed either with glue or metal rivets. The most reliable way would be M6 bolts. Nuts should be placed not only on the ends of the bolts, but also between the layers. The tails of the bolts protruding onto the nuts must be cut off with a grinder.

Source: https://ssk2121.com/magnitnye-prisposobleniya-dlya-svarki-svoimi-rukami/

Choosing magnets for welding: types and their features

Often the welding process itself is less lengthy than the preparatory work for this operation. As a rule, the lion's share of time is devoted to fixing all connected components in the required position. This factor is the most important, as it directly affects the quality of work.

For example, if after a long assembly of segments of the structure being welded, it falls apart from contact with the electrode or the welding is performed unsatisfactorily, then a lot of time will need to be spent on restoration operations. To prevent annoying situations and make the specialist’s work easier, additional devices were invented - magnets for welding.

Purposes of use

Magnetic fasteners are used to achieve the following purposes:

• Convenient fastening of parts and simplification of their installation;
• Correct positioning of the planes to be welded;
• Fast assembly of structures;
• Setting certain angles for connected products;
• Accurate and precise welding to avoid gross mistakes;
• An effective replacement for bulky clamps and clamps.

Welding magnets allow you to adjust the fastening and assembly of elements in accordance with operating conditions. They have an adhesive force of 10 to 50 kilograms and make it possible to work with both shaped products and sheet metal. The main advantages of such devices are such important factors as reducing the period for preparing products for welding and reducing the labor intensity of the work process.

Types of magnets for welding

The main task of welding work is to create a seam whose characteristics are not inferior to the quality of the material of the parts being joined. To achieve decent performance during the work process, it is necessary to use various types of devices and devices.

Here are 7 of the most popular ones:

• Magnetic corners. This device is a structure of two metal plates and a magnet between them. A round hole is cut in the middle of the device. Magnet angles can be fixed or adjustable.
• Switchable magnets. This fastener allows you to fix the parts to be connected using a magnetic field activator. After completing the welding operations, a device of this type can be removed with one turn of the switch. The magnet is quickly and easily cleaned of chips and metal particles.
• Clamps. A device of this type allows the elements to be welded to be pulled together. Its outer side is used as a fixing component, and its inner part as a clamping device. Using such a device is quite simple - the products to be connected are placed in a clamp and then tightened with a screw.
• Spacers. This is the simplest device that allows you to correct edge defects in assembled products. They are able to give parts the required shape and eliminate local imperfections. The principle of operation of the spacer is similar to the functioning of the clamp, but unlike the latter, it works not to tighten, but to unclench.
• Installation magnets. This device may have a monolithic form or have a complex design with the ability to change angles. It is designed to install working elements in a specific position. The parts to be connected are fixed in the required position and then welded into the finished product. One of its functions may be the ability to disable fasteners. After pressing the shutdown button, the magnets of the device reduce their impact, and the device can be easily moved to another location.
• Fastening devices. These devices are designed to fix the parts to be welded in the required position. This is done in order to prevent displacement or deformation of the products. Such devices include clamps, clamps and ties.
• Installation and fastening products. Devices of this kind carry out an integrated approach to installing parts to be welded in a certain position and their subsequent fastening. In this case, it is enough to place the products in the device and tighten them together using screws. Parts can be fastened in one or two planes. To make it convenient to remove the structure after welding, one of the fastening elements is made in the form of a rotating mechanism.

Read other useful articles on our website:

Source: https://voltobzor.ru/svarka/magnity-dlya-svarki

How to use magnets for welding?

Reading time: ≈5 minutes

Any professional welder will tell you that for a high-quality result of the work it is necessary to perform many preparatory operations. Clean the metal, set the welding mode, calcinate the electrodes. But many people forget about another important stage - joining the parts and fastening them together.

But the result of the work also largely depends on the correct docking. You can make a perfect, high-quality seam, but this work will be pointless if the parts are joined crookedly or with gaps. To solve this problem, special devices for welding work were invented. For example, magnets. But magnetic docking holders are not the only heroes of our article. You will also find out what other devices exist for fixing parts.

Types of devices

As we wrote above, various clamps for welding work have been invented to help welders. The most popular of them are clamps, clamps, spacers and magnets. Welding clamps allow you to fix two parts so that they are motionless relative to each other. You can use homemade clamps. Welding clamps can be used to secure small parts. And with the help of spacers you can align the parts.

Magnetic welding devices stand apart. They are the most convenient and easy to use. Let's talk about them in more detail.

Magnetic latches

A magnetic clamp (also known as a magnet for welding, a magnet corner) is a small device for conveniently fixing parts. Welding magnets provide fairly accurate joining, comparable to centralizers. But at the same time, the magnet is much smaller in size and more convenient to use. With their help, you can do the docking yourself.

Many beginners have many questions regarding welding magnets. We will try to answer the most popular ones.

Is it possible to fix parts at different angles?

Yes. A magnetic welding square can be used to join two parts at any angle. You choose the angle yourself; it can be either 130 degrees or 40 degrees. It all depends on the capabilities of your magnet. There are magnets with adjustable angles on sale.

How convenient is it to use a magnet?

Very comfortably! The magnetic mounting square not only saves your time, but also allows you to join parts without unnecessary stress. You only need one small device. No need to use bulky, heavy fasteners or clamps. The magnet fits in your pocket and can be used in any conditions.

In addition, welding magnets do not require special maintenance. They are durable and easy to clean from dirt.

What if I can't remove the magnet from the metal?

If you doubt your abilities, you can buy magnets that have a manual switch off of the magnetic field. Such devices are even easier to install and remove than conventional magnets. In addition, you do not have to spend extra effort and time on dismantling. Turning off the magnet takes no more than a second.

But there must be at least some shortcomings, right?

And it couldn’t have happened without them. The main disadvantage is the inability to work with diamagnetic metals. Such metals are not attracted by a magnet, which means the magnetic clamp simply cannot join the two parts. In addition, such devices are not cheap and many people prefer to use more traditional devices. For example, clamps. And after that make temporary rivet seams. But we consider these methods ineffective and labor-intensive.

Types of magnets

There are two types of magnetic welding holder: angular and universal.

A corner magnet (also called a “magnetic welding corner”) is a simple device that is used to join two parts at an angle. Often corner welding magnets have a fixed angle. For example, you buy a magnet for welding at a 90 degree angle. Accordingly, you will not be able to join parts at a different angle.

But we do not recommend purchasing only one right angle welding fixture. It is better to buy a set of magnetic welding clamps for joining at different angles. The Archimedes magnet has proven itself well for welding at an angle. It is switchable. Switchable magnets for welding are very convenient to use, they fix parts well and work flawlessly.

Universal magnets can be used for welding at any angle. This is the best option, but it is not cheap. But universal magnets can be used with parts of any size and properties. And once you buy them, you will no longer have to buy other magnets. Typically, a universal magnet consists of moving parts fastened together. These parts can be folded into any desired shape and used in your work. Because of their appearance, such magnets are nicknamed “snake”.

Instead of a conclusion

A magnet for welding work is an indispensable device when joining any metal structures and forming high-quality welded joints. Using magnetic clamps you can simplify and speed up your work. This is especially important when performing complex tasks, for example, when welding profile pipes.

Magnets save a lot of time and generally make the welding process much more productive. Therefore, we recommend that you purchase a set of magnets and try them in your practice. The set is not that expensive, but it saves time and effort. Share your experience in the comments below. We wish you good luck in your work!


Source: https://svarkaed.ru/oborudovanie-dlya-svarki/detali-i-prisposobleniya/kak-ispolzovat-magnity-dlya-svarki.html

Magnets for welding: what they are, what they are, how and where they are used, rules of use

Careful consistent preparation for welding is the key to a strong seam.

To do this, you need to clean the metal surface, select the mode, electrodes, and also correctly join and secure the parts to be welded.

Proper joining is no less important than a reliable seam. To make it easier to assemble the parts, they came up with several devices, one of them is a magnet.

How else are welding elements fastened?

Welders use several types of fasteners. The parts are held together with clamps so that they do not move relative to each other.

If you need to immobilize small elements, it is better to use clamps. Spacers serve to align the parts.

Magnets are the most convenient to use, so they stand apart from other devices.

What it is

They allow you to achieve precision when joining, as when working with centralizers. Magnets for welding are small and no special tools are needed to use them.

What do you need to know when working with such fasteners?

• It is possible to fix parts at different angles. Using magnets, parts of the object to be welded can be attached at any angle. It all depends on the configuration of the device. You can buy a clamp with adjustable angles.
• They are convenient to use. Using a magnetic square, you can quickly join metal elements without the help of bulky devices, or buy additional fasteners. You can carry it in your pocket and use it at any time.
• Such fasteners can be easily cleaned from dirt, they do not require maintenance, and they will last for several decades.
• How magnets are removed. They come in several types - with constant attraction and with the ability to turn off the magnetic field. The latter can be removed and attached without problems. It takes about a second to take it away.

What are the disadvantages?

The main disadvantage is that you cannot work with magnets if you are welding diamagnetic materials.

In this case, you will have to use other fasteners for fixation.

They are also expensive, so clamps and rivet seams are often used instead. But these devices have already shown their ineffectiveness.

What types are there?

Angles (or corners) are used to fix welding elements at a certain angle. Most often the slope is constant, but there are examples with adjustment. It is advisable to buy a set with different angles of inclination.

There are often positive reviews about the Archimedes brand. It has a magnetic field shutdown feature, making it easy to attach and remove.

Universal fasteners allow you to weld parts at any angle. This is the best, but most expensive option. They securely fasten parts of any size and structure. Having purchased one such device, you no longer need to spend money on others.

A universal one consists of several interconnected parts. They can form into any shape. Popularly, such fasteners are called “snake”.

Summarizing

A welding magnet is convenient for securing welding parts and joining them precisely, which results in reliable seams.

Fastening elements simplify work and save time, which is very important when welding complex objects.

Everyone should try such fasteners in practice to appreciate their advantages.

Source: https://prosvarku.info/prisposobleniya-i-detali/magnity-dlya-svarki

How to make magnetic mass for a welding machine at home?

Magnetic mass for welding is a special device that provides reliable fixation on metal surfaces. This allows you to comfortably perform welding work on complex surfaces where the use of classic alligator clips is impossible.

There are many design options that depend on the work conditions. The structure of this device is not particularly complicated. For this reason, some craftsmen prefer to use homemade magnets for welding.

What's happened?

This device is mounted on the working plane of the workpiece . Thanks to the active magnetic field, a strong fastening is achieved, creating a closed electrical circuit - the main condition for the formation of an electric welding arc.

The tool is especially popular among novice welders - it will take a few minutes to familiarize yourself with the principles of the work. Experienced specialists use magnetic mass for welding machines for critical work - welding large-diameter pipes or connecting load-bearing units made of profile materials.

Design of magnetic contact and its characteristics

Consists of two nodes:

1. Cable holder . The ground cable of the welding equipment is attached to it using a bolted connection.
2. Magnetic node . The size of the magnet depends on the design features. Some models are equipped with a mechanism that regulates the pressure of the magnet on the working plane. Professional devices have switches.

The parts are connected to each other by a rigid fastening. The main characteristics of the devices are:

1. Dimensions and weight. Depends on the manufacturer and specific model. The average weight is 1-1.2 kg.
2. The force of attraction to the surface. Varies in the range from 2 to 50 kg.
3. Welding current strength. The maximum value of the parameter is measured in amperes. For entry-level models, it does not exceed 200 A. An advanced tool is capable of operating at 400-500 A.
4. Execution type. They produce special clamps for corners with gap adjustment.

How to use?

The technology for using the device is not complicated. First of all, the welding cable is connected, after which installation begins .

Most units are equipped with switches that activate a magnetic field. At rest, the magnet will not be attracted to the surface.

One person is required for commissioning. After contact with the working plane, the device must be activated. Upon completion of these steps, the clamp is in operating mode.

After completing the work, perform the above steps in reverse order. Do not try to separate the switched-on device from the part - many models have quite high tear strength. In addition, this may damage the latch.

Is it worth buying?

The answer to this question can only be given by the master performing the work. For a novice welder who has just started his professional career, this device can make life significantly easier.

If a specialist works primarily with non-ferrous metals, a magnetic clamp will most likely not be useful.

Experienced workers have a set of various clamps for all occasions, including this device.

The cost of the device is quite high. If you have knowledge in the field of electrical engineering, you can try to make it yourself. The technology and manufacturing process will be discussed below.

How to do it yourself?

Experienced craftsmen try to reduce all costs for the purchase of auxiliary and working equipment to a minimum. Due to the simplicity of the design, no special equipment or complex tools are needed for manufacturing .

To assemble a homemade device, you should prepare the following equipment:

1. Magnet . The working part of the unit. It must have sufficient power to securely attach to metal. Magnets from old car speakers with a power of 10-15 W are ideal for this purpose.
2. Two washers . Their size must correspond to the diameter of the magnet.

1. A set of hardware for fixing the welding cable.

Algorithm for performing the work:

1. One of the washers will make contact with the working plane. It is necessary to make a hole in it corresponding to the size of the bolt head.
2. The cap is cut to the thickness of the washer.
3. After preliminary preparation, the structure is connected by welding. The product should resemble a mushroom, in which the threaded part of the bolt plays the role of a leg.
4. A magnet is placed on the mushroom. Place a second washer on the reverse side.
5. A welding tip is attached to the thread, and the entire structure is secured with nuts.

Functionality testing is performed only in the field. The quality criterion will be the correct functioning of the welding machine.

Do-it-yourself welding machine compound is a great way to save money, as well as a means to test your DIY construction skills.

A properly assembled device will last no less than the factory clamp.

Conclusion

Magnetic mass is a useful invention that can make life easier for both beginners and experienced welders. The device has many advantages that justify the rather high cost.

The need to have this device in the arsenal depends only on the specific master. Having the appropriate skills, you can assemble a magnetic clamp yourself, using available materials.

Source: https://svarka.guru/oborudovanie/rashodniki-i-kompletuyushie/kak-sdelat-magnitnuyu-massu.html

Magnets for welding: functions and advantages, types of devices and self-production - Machine

Welding is a fast and reliable way to create permanent connections between metal parts. The process itself does not last long; it often takes a lot of time to correctly position the workpieces relative to each other.

They must be fixed accurately and securely so that there is no displacement during the welding process. Many devices have been developed for this.

Magnetic fasteners - angles and holders are very quick to install and remove and save the welder a lot of time.

Magnets for welding

Switchable magnets

In this type of equipment, it is possible to control the intensity of the magnetic field, turning it on and off. This effect is achieved by rotating one magnet inside the housing relative to the other so that their magnetic fields either mutually enhance or neutralize each other, and the field does not pass beyond the housing.

Switchable magnets are placed and removed from workpieces with one finger movement. Such devices are especially convenient when it is necessary to correct the position of workpieces.

Another advantage is that after turning off such a holder, all sawdust, trimmings, shavings and other small metal waste fall off it, making cleaning easier

Switchable magnet

Clamps

The equipment is designed to reliably press the workpieces against each other.

Its outer part, made in the shape of a right (or other) angle with a cut out top, is the fixing part, and the inner part, equipped with a screw feed device, is a clamping device.

Essentially, this is a vice with jaws bent at an angle. The parts (profile or rod) are placed in a clamp and pressed against each other with a screw.

The dimensions and shape of the parts are limited by the size of the clamp. It can be used not only for welding, but for other plumbing work.

Clamp

Spacers

Spacers are used to create the required gap between the workpieces to be welded.

Home craftsmen choose for this purpose cutting pipes and profiles from a waste box, but it is much more convenient to use an industrial product. The spacer is also equipped with a screw and is a “reverse clamp”.

It can be adjusted to any required clearance within the screw stroke. Spacers and welding magnets are often used together.

Magnetic corners

One of the most commonly used devices is a corner. Its main advantages:

• Reduces the labor intensity of the welding process. The time for fixing workpieces is reduced several times.
• Parts can be fixed at almost any angle between them.
• The device is compact and does not interfere with welding work.
• The time for removing equipment is also reduced several times compared to clamps.

Magnetic corner

Magnetic corners are available with both fixed angles and freely variable angles. To do this, they are equipped with a hinged device with a lock.

Structurally, the equipment consists of two metal plates cut from sheet metal and permanent magnets fixed between them. The most popular are universal flat corners, reminiscent of a house with a cut off roof.

But there are also three-coordinate spatial clamps in the form of polyhedra or cylinders. They allow you to assemble very complex spatial structures, such as power line supports, spatial trusses, etc.

Criterias of choice

Before you start buying a magnet for welding, you should think about what specific operations you are going to use it for. In addition, the volume of this work and its frequency are important.

If you need to weld the frame of a fence or greenhouse once a year, or replace the trim of a trailer body for a walk-behind tractor, there is no point in buying a professional model with fixation at an arbitrary angle in three planes, but you can get by with a couple of squares.

1. If you are opening a business and the scope of welding for six months to a year is clear, then a professional device will pay for itself by increasing labor productivity.
2. There are also several general rules and recommendations for selection:

• The higher the class of equipment (and its price), the longer it will retain its working qualities, primarily its geometric dimensions and clamping force.
• High magnetic field power allows you to hold workpieces of greater mass or length. Mid-level models hold up to 35 kg.
• A larger number of angles will allow welding of a variety of structures.

Modern high-quality devices do not have a negative impact on the stability of the welding arc. Unfortunately, some cheap Chinese holders have this effect on welding quality and are best avoided.

Switchable magnets are several times more expensive than permanent ones. But they are also much more convenient.

It becomes possible to weld without an assistant. With them, it is possible to precisely adjust the position of parts with millimeter precision - just turn off the magnet for a second and move the workpiece.

It is also much easier to remove them from the finished product after welding. Another advantage is that when the magnet is turned off, all the iron debris stuck to it falls off on its own.

Whether such convenience and performance is worth the money requested is something everyone decides for themselves.

The quality of the switched-off magnet must be high. If it switches off spontaneously during welding, the structure may disintegrate into blanks and the work will have to be redone.

A simple DIY magnetic square

The magnetic square has a very simple structure and is quite accessible for self-production by a craftsman with metalworking skills. Usually they are made by hand in three cases:

• testing your strengths and abilities;
• There is no suitable size on sale;
• for welding non-standard products.

Do-it-yourself magnet for welding

For production you will need:

• sheet metal 2-3 millimeters thick;
• round magnet (from an old speaker);
• bushings made of non-magnetic material (plastic, hard rubber, etc.);
• nuts, countersunk head screws.

The manufacturing sequence is as follows:

• Draw the outlines of the holder on the sheet. You need to be especially careful and use only a high-quality and certified square and ruler for marking. The accuracy of the assembly of your future structures will depend on the accuracy of the angles when marking.
• Using a grinder or jigsaw, cut out the parts and align their edges.
• Cut the bushings to size. It is important that they are strictly the same in height and have smooth edges.
• Pick up a piece of elastic plastic and fix the magnet along its inner hole.
• Mark the places for fastening, drill the plates (preferably together).
• Assemble the product by putting the bushings on the screws and placing them and the magnet between the plates.

The clamping force of the product depends on the accuracy of the assembly and the magnetic properties of the metal; before welding, it will have to be determined experimentally.

Magnetic holder for DIY welding

This is another design option for a magnetic corner for DIY assembly. It will require:

• metal sheet 1-3 mm;
• neodymium magnets (so-called “screw magnets”);
• dry board;
• nuts, countersunk head screws, self-tapping screws.

Manufacturing of magnetic holders for welding

The manufacturing procedure is as follows:

• Mark and cut two identical blanks from the sheet, carefully monitoring the accuracy of the angles.
• Make the central part of the holder. Cut it out of the board so that it follows the contours of the metal plates, but recedes inward to the height of the magnets plus a millimeter to one and a half.
• Fasten the metal and wooden parts of the product together.
• Using self-tapping screws, screw the magnets to the wooden spacer around the perimeter so that they are at the same distance from each other.

• Before starting work, you need to check the geometry of the resulting equipment - its angles and dimensions.
• The cost of magnets for welding ranges from hundreds of rubles (household models made in China) to tens of thousands (switchable universal professional devices from well-known brands with the ability to work in many planes and arbitrarily set angles). But it is possible to make their analogue yourself:

• Cut two triangular-shaped plates from a sheet of metal (or in the shape of a house with a cut off roof). You need to carefully monitor the exact alignment of the angles.
• File the edges.
• The magnet can be used from faulty speakers or a microwave oven.
• Mark and drill through holes in the corners of the triangle and in its center.
• Using four screws and nuts and bushings equal in height to the magnet, fasten the structure so that the magnet is clamped in the center.
• To reduce contamination, plastic plugs can be placed along the end faces.

DIY switchable magnet

The shape of the magnet for welding may not be triangular. It is selected depending on the needs of the assembled welded structure.

Source: https://regionvtormet.ru/okrashivanie/magnity-dlya-svarki-funktsii-i-dostoinstva-raznovidnosti-prisposoblenij-i-samostoyatelnoe-izgotovlenie.html

Welding magnet switchable

For welding, in addition to working tools, protective devices for the face and hands of the welder, additional devices are also used - they will facilitate the work and allow it to be done accurately and accurately.

Magnetic angles - pure welding gadgets

Any device that simplifies the work has its advantages.

Magnetic holders for welding are a convenient attribute. You can either buy them in a store (for example, in the World of Magnets) or make them yourself.

Warning: the use of homemade, uncertified devices is hazardous to health and may result in defects in manufactured products.

This attribute is useful even when performing simple one-time work; it will facilitate welding of products because:

• Due to the fact that the metal elements are fixed, it is convenient for the welder to work and he gets freedom of action;
• The assembly of a welded structure begins before welding with the fixation of elements, so one person can weld the product - magnetic devices for welding work reduce labor costs;
• Parts secured with welding magnets stand straight and will not move, for this reason a neat weld is obtained:
• When assembling high-precision products, magnets for welding are not only convenient, but necessary;
• With a large number of welding jobs, they reduce the time spent on welding;
• Non-standard parts are securely fastened without additional devices;
• The parts are installed using welding magnets, both horizontally and vertically.

Magnets from well-known manufacturers have a shape that allows you to set angles of 45°, 60°, 90°, 135°, for reliable fastening of parts. A self-made magnet sometimes fell off, but a factory-made product makes it possible to do work at any angle without moving the part.

Types of magnetic holders for welding

For welding metal structures, different magnets are used; they differ in shape and operating principle:

• Simple magnetic corners allow you to install parts at the required angle;
• A magnetic clamp makes it possible to weld structures of any precision and complexity, placing the welded elements at any angle;
• The magnetic clamp is equipped with a switchable or permanent magnet - this allows you to turn off the magnet after welding and remove the clamp without effort;
• Most angles can be installed at different angles - the design allows for welding of varying complexity;
• Different models of angles have different power - for fixing parts with a large mass, and for welding large structures, high-power magnets are required, but for household work and welding small products, low-power welding magnets are needed.

To get good results when welding complex products, you need to simultaneously use different magnetic devices.

Here are the 7 most common:

Magnetic devices. Externally – 2 metal plates connected together, with a magnet installed between them. Angles can be changed or fixed in one position.

Switchable magnets. Allows you to install the parts to be connected by turning on the magnetic field. At the end of welding, it is turned off and removed in one motion. It is easy to remove metal shavings from such a magnet.

Installation magnets. Used to place parts of the structure to be welded in the required position. They may have the ability to turn off, which reduces the impact of the magnetic field and allows you to effortlessly move the device to another location.

Angular constant action

A magnet for welding parts at an angle is a popular device; it is characterized by its low cost and simplicity of design. This device is used to secure metal elements in the desired position when welding various structures.

It allows you to quickly and reliably assemble parts of the product, and will help when working with steel pipes, profiles and angles, and sheet metal.

There are 3 types of magnetic corner for welding:

• Hexagonal;
• Triangular;
• Arrow-shaped.

The hexagonal fixture can be installed at angles in:

1. 30 degrees;
2. 60 degrees;
3. 75 degrees.

Triangular and arrow-shaped devices can be installed at angles in:

1. 45 degrees;
2. 90 degrees;
3. 135 degrees.

These devices facilitate the assembly and welding of products and reduce working time. The downside is that the magnet strength is low, for models in the low price category.

Disabled and enabled

* switchable magnetic angle for welding structures

* includes for welder (switchable, magnet)

The use of switchable and switchable magnets makes it possible to reduce and simplify the installation of metal structures. They have advantages over permanent magnets:

• Easy to clean the switched-off magnet from small metal;
• Possibility of adjusting the location of parts to be welded when the magnet is turned off;
• Reliable fixation of structural elements when the magnet is turned on in a certain place.

The advantage of such a device is that it is easy to remove after tack work, with just one movement. Magnetic corners can be template or universal. Standard products are made with fixed angles, and universal devices make it possible to weld 2 parts of the structure at any required angle.

Attention! The design sometimes includes a V-shaped groove. It includes the ability for the welder to fix even very small metal parts of any complexity.

Advantages of working with a magnetic square

Inexpensive standard products are suitable for amateur work, but for professional welding you need complex tetrahedral and three-coordinate devices - made of heat-resistant magnets.

A high-quality magnetic holder designed for welding metal structures is tensile strength, can withstand heavy loads, and is resistant to mechanical stress.

A magnetic square that has the required power must reliably hold the parts of the structure to be welded - this will make independent work easier and safer.

Recommendation! To make it easier to remove the magnetic device, it is advisable to use switchable magnetic holders.

It is necessary to select a magnetic holder suitable for the job, taking into account the expected angles of the structure, the weight of the tool used, and the power of the magnet.

What to look for when choosing 

For a professional welder, it is important to choose the right magnets for welding metal products. This will allow you to do the job efficiently without an assistant.

When choosing, you need to remember:

1. 1. Low power welding magnets should not be used when welding heavy structures. Under heavy weight, a weak holder will not be able to fix massive parts. But a device that is too powerful will complicate the work due to its size and large mass. You need a neodymium or regular magnet suitable for a specific task;
   2. Triangular devices are most often used. They can be installed at angles of 45, 90 and 135 degrees;
   3. It is more convenient to use switchable devices. 

Welding work is carried out at a distance from the magnetic device. If it heats up, the qualities of the magnet will disappear. Strong blows also harm him. There are no more restrictions when using magnetic welding devices.

A simple DIY magnetic square

You can make your own simple magnetic welding square from the speaker on your TV. The product will look like this.

Any grade of steel is suitable for the job. The plates for the product are cut out of sheet metal manually, or a grinder is used for the work. The most important thing is to cut the corners of the fixture accurately.

After this, an insert is made that is installed between the 2 plates; it is needed to increase the rigidity of the product and to protect the magnet from metal filings. Any material will do; for example, you can use plywood, from which a triangle blank with a hole is cut out. The insert is made a few millimeters smaller than the plates; this is necessary so that the insert does not interfere during operation.

After this, the elements of the welding angle are assembled together, and, after lubricating the parts with glue, they are secured with aluminum rivets. DIY welding holder plates must be installed parallel to each other.  

After the glue has hardened, you need to cover the magnetic corner with a primer and paint it in a suitable color.

As a result, you will get a welding angle, similar in its characteristics to the branded magnetic angle. It is important not to heat the magnet during operation, otherwise the high temperature will cause loss of magnetic qualities.

Source: https://respect-kovka.com/magnit-svarochnyy-otklyuchaemyy/