How to separate magnets from each other

3 different types of magnets and their uses

Magnets are materials that generate a field that attracts or repels certain other materials (such as iron and nickel) from a certain distance. This invisible field, known as the magnetic field, is responsible for the key properties of a magnet.

Ancient people have been using magnets since at least 500 BC, and the earliest known descriptions of such materials and their characteristics come from China, India and Greece about 25 centuries ago. However, artificial magnets were created back in the 1980s.

Obviously, not all magnets are made of the same substances, and therefore they can be divided into different classes depending on their composition and the source of magnetism. Below is a detailed list of the three main types of magnets, including their properties, strength, and industrial and non-industrial applications.

1. Permanent magnets

Once magnetized, permanent magnets can retain magnetism for a long time.
They are made from materials that can be magnetized and create their own permanent magnetic field. Typically permanent magnets are made from four different types of materials:

I) Ferrite magnets

Stack of ferrite magnets | Image credit: Wikimedia

Ferrite magnets (also called ceramic magnets) are electrically insulating. They are dark gray in color and look like pencil lead.

Ferrites are typically ferromagnetic ceramic compounds made by mixing large quantities of iron oxide with metallic elements such as manganese, barium, zinc and nickel. Some ferrites have a crystalline structure, such as strontium and barium ferrites.

They are quite popular due to their nature of being non-corrosive and hence used to extend the life cycle of many products. Ferrite magnets can be used in extremely hot environments (up to 300 degrees Celsius) and the cost of making such magnets is also low, especially if they are produced in large volumes.

They can be further classified as "hard", "semi-hard" or "soft" ferrites, depending on their magnetic properties.

Because hard ferrites are difficult to demagnetize, they have high coercivity. They are used to make magnets such as small electric motors and loudspeakers. Soft ferrites, on the other hand, have low coercivity and are used to make electronic inductors, transformers, and various microwave components.

II) Alnico magnets

Alnico 5 horseshoe magnet | This U-shape produces a powerful magnetic field between the poles, allowing the magnet to grip heavy ferromagnetic materials.

Alnico magnets are made up of aluminum (Al), nickel (Ni) and cobalt (Co), hence the name al-ni-co. These often include titanium and copper. Unlike ceramic magnets, they are electrically conductive and have high melting points.

To classify them (based on their magnetic properties and chemical composition), the Magnetic Materials Association assigned them numbers such as Alnico 3 or Alnico 7.

Alnikos was the strongest type of permanent magnet until the development of rare earth magnets in the 1970s. They are known to create high magnetic field strengths at their poles - up to 0.15 Tesla, which is 3,000 times stronger than the Earth's magnetic field.

Alnico alloys can maintain their magnetic properties at high operating temperatures, up to 800 degrees Celsius. In fact, they are the only magnets that exhibit magnetism when heated red hot.

These magnets are widely used in household and industrial applications: magnetron tubes, sensors, microphones, electric motors, loudspeakers, vacuum tubes, radars are a few examples.

III) Rare earth magnets

As the name suggests, rare earth magnets are made from alloys of rare earth elements. This is the strongest type of permanent magnet, developed in the 1970s. Their magnetic field can easily exceed 1 Tesla.

The two types of rare earth magnets are samarium cobalt and neodymium magnets. Both are vulnerable to corrosion and very brittle. Thus, they are coated with a certain layer(s) to protect them from chipping or breaking.

Samarium-cobalt magnets are composed of praseodymium, cerium, gadolinium, iron, copper and zirconium. They can retain their magnetic properties at high temperatures and are highly resistant to oxidation.

Due to their lower magnetic field strength and high production cost, they are used less frequently than other rare earth magnets. They are currently used in benchtop nuclear magnetic resonance spectrometers, high-end electric motors, turbomachinery, and many applications where performance must match temperature changes.

Neodymium magnets, on the other hand, are the most affordable and strongest type of rare earth magnet. They are a tetragonal crystal structure made from alloys of neodymium, boron and iron.

Due to their smaller size and light weight, they have replaced ferrite and alnico magnets in numerous applications in modern technology. For example, neodymium magnets are currently used in head drives for computer hard drives, electric motors for cordless tools, mechanical switches for electronic cigarettes, and mobile phone speakers.

IV) single-molecule magnets

A versatile intracellular protein called ferritin is considered a single-molecule magnet. It stores iron and releases it in a controlled manner.

Towards the end of the 20th century, scientists learned that some molecules [which are composed of paramagnetic metal ions] can exhibit magnetic properties at very low temperatures. In theory, they are capable of storing information at the level of magnetic domains and providing a much denser medium than traditional magnets.

Single-molecule magnets consist of clusters of manganese, nickel, iron, vanadium and cobalt. Some circuit systems, such as single-circuit magnets, have been found to retain magnetism for long periods of time at higher temperatures.

Researchers are currently studying monolayers of such magnets. One of the early compounds that was investigated as a single-molecule magnet is dodecanuclear manganese cage.

The potential applications of these magnets are enormous. These include quantum computing, data storage, information processing and biomedical applications such as MRI contrast agents.

2. Temporary magnets

Some objects can be easily magnetized even by a weak magnetic field. However, when the magnetic field is removed, they lose their magnetism.

Temporary magnets vary in composition: they can be any object that acts as a permanent magnet in the presence of a magnetic field. For example, soft magnetic materials such as nickel and iron will not attract paper clips once the external magnetic field is removed.

When a permanent magnet is brought near a group of steel nails, the nails are attached to each other and then to the permanent magnet. In this case, each nail becomes a temporary magnet, and when the permanent magnet is removed, they no longer attach to each other.

Temporary magnets are mainly used to make temporary electromagnets, the strength of which can be varied according to the requirements. They are also used to separate materials made from metal in scrap yards and give new impetus to modern technology - from high-speed trains to high-tech space.

3. Electromagnet

Electromagnet attracting iron filings

The electromagnet was invented by British scientist William Sturgeon in 1824. It was then systematically refined and popularized by the American scientist Joseph Henry in the early 1830s.

Electromagnets are tightly wound coils of wire that act as magnets when electrical current passes through them. It can also be classified as a temporary magnet because the magnetic field disappears as soon as the current is switched off.

The polarity and strength of the magnetic field created by an electromagnet can be adjusted by changing the direction and magnitude of the current flowing through the wire. This is the main advantage of electromagnets over permanent magnets.

To enhance the magnetic field, the coil is usually wound around a core of "soft" ferromagnetic material such as mild steel. A wire coiled into one or more loops is called a solenoid.

These types of magnets are widely used in electrical and electromechanical devices including hard drives, loudspeakers, hard drives, transformers, electric bells, MRI machines, particle accelerators and various scientific instruments.

Electromagnets are also used in industry to grip and move heavy objects such as scrap metal and steel.

Source: https://new-science.ru/3-raznyh-tipa-magnitov-i-ih-primenenie/

How to separate two neodymium type magnets?

Neodymium magnets are now very widely used. It must be recalled that these bodies are the strongest in terms of magnetic force. Even over time they do not lose it. But sometimes it happens that two objects are attracted to each other, and moving them apart becomes almost impossible. In this article you can find the answer to the question of how to separate two magnets.

Disconnection

First of all, it should be noted that it is unrealistic to simply break two powerful magnets stuck together. Speaking about how to separate two magnets, it should be noted that you should not even use your own strength for these purposes.

The most you can do is move the objects a short distance from each other, after which they will stick together again, and your hands may be injured. The force of collision of such neodymium bodies is comparable in energy release to the impact of a heavy hammer on an anvil.

This is why you should not experiment if you do not know how to separate two magnets. Let's take a closer look at 4 effective methods that will help cope with this problem.

Wedges

How to separate two magnets using non-magnetic wedges? First of all, you should pay attention to the fact that it is better to use wooden tools for this purpose. They are inserted between magnets. Then the adhesive force decreases, after which you must make every effort to separate them with your hands.

How to separate two magnets at home, the power of which is 180 kg or more? To do this, you can use a handy guillotine, for which a desk, door or chest of drawers is ideal.

This method is based on the principle of cutting one magnet from another, however, the door jamb or the frame of a chest of drawers or desk will act as an immovable supporting element. The sliding mechanism will be a drawer or door.

For this method, only high-quality furniture made from chipboard or a door made of wood are suitable.

Wooden guillotine

How to separate two magnets at home? For bodies of greater power, a wooden guillotine can be used. To do this, one magnet is placed in the hole in the wall, and the other with a large lever should move to the side, making it possible to bifurcate them.

Own strength

Magnets with a power of less than 150 kg can be broken using your own efforts. To do this, the stuck together bodies must be placed on a flat surface so that the gluing line is located along the edge of the cabinet or table. In this case, you should pay attention to the fact that one magnet should lie on the stand, and the other should hang down.

With one hand you should hold the object that lies on the surface, and with the other you should firmly grasp the second magnet. At the same time, you need to make every effort to break it. The force should be directed vertically, that is, go perpendicular to the plane of the cabinet or table.

After disconnecting the magnets, one of them must be placed at a distance of at least half a meter from the other.

If stuck to another surface

If your neodymium magnet is attached to the front door, battery, sewer hatch, or car body, then it will also be very difficult to remove it with simple movements. If the surface is flat and smooth, then the easiest way to detach the object is to throw it to the very edge of the metal sheet. Otherwise, most likely, it will be necessary to use wooden wedges, which were discussed above.

There are several ways to separate two stuck magnets. Most often, this activity requires not only a certain physical strength, but also ingenuity.

Source: https://FB.ru/article/463996/kak-razyedinit-dva-magnita-neodimovogo-tipa

How to disconnect a neodymium magnet

Neodymium type magnets are very powerful in terms of attraction, which is often used to find or remove metal objects from various types of surfaces. They come in different types and brands, which is indicated on their packaging.

You can purchase such products only in specialized stores, where they will tell you all the basic properties of this material.

We disconnect the magnets. A few simple recommendations

All neodymium magnets are divided into classes, according to which they have different attractive forces.

If you purchased very strong products, it is almost impossible to disconnect them without using a special tool, but when the magnets are relatively weak, there are several simple ways:

1. Place the magnet on the edge of the table so that one of it often rests on it and the other hangs freely. Then, with a sharp movement, slide this part down and press the other magnet against the table. You need to do this quickly and after separating, try to throw both parts away so that they do not attract again and hurt your hands.
2. Another good option is to hammer the blade between both parts. To do this, you need to use only non-metallic products, such as wood. You need to position the magnets as in the previous version and be sure to be careful.

A few more options

You can try to separate powerful magnets at home using a door. This also uses the method of sliding both connected parts. To do this, it is placed in the door frame and, with the help of the closing door, a freely located magnet is moved.

This option is quite complex and requires a very durable door. It is also very important to follow safety precautions. Sometimes you can fix one neodymium magnet (for example, in a vice), and hit it in another way and try to knock it down.

It is very important not to use metal objects. Such work should only be performed with products that are not magnetic. All of these disconnection options are quite dangerous, as they can lead to injury, so it is very important to carry out this procedure very carefully.

If you cannot separate two neodymium magnets, then you need to use special equipment with which you can accomplish this task. We also suggest watching this video:

Source: http://stroybud.com/kak-razedinit-neodimovyiy-magnit/

How to disconnect neodymium magnets at home?

Neodymium magnets are incredibly widely used today. It is worth recalling that this is the type of magnet that is the strongest in terms of magnetic forces and does not demagnetize over time.

On the website neodimovie-magniti.ru you can purchase neodymium magnets of any configuration. Affordable prices and a wide range of products will pleasantly surprise you. It is recommended to purchase this product only from trusted suppliers.

Using Disc Magnets

Needless to say, disc magnets are one of the most commonly used forms for producing magnets. The fact is that in this case their scope of application increases significantly.

If we talk about the dangers of magnets to health, then they do not exist. Quite the opposite. On the Internet you can find sites that offer treatment of gastrointestinal diseases using the magnetic field of a neodymium magnet.

However, this is also a lie. Any magnet is a very useful thing in everyday life. Examples of applications include the following:

• holding curtains;
• attaching notes to the refrigerator;
• wall panel for knives (knives are held by magnets), etc.

It hardly needs saying that using magnets to pause or completely stop water, electricity or gas meters is a crime.

If the controller notices a residual magnetic field (and after the magnet remains on the meter for a long time, the latter becomes magnetized), problems cannot be avoided.

What is required to separate the magnets?

Of course, if the magnets are small (like coins) they can be separated using the muscular strength of the hands. After all, the magnetic forces that pull both magnets together are very small in this case.

However, if the two magnets that are “stuck together” are small pucks in size (slightly smaller than a hockey puck), then in this case you cannot do without the principles of leverage.

It is necessary to move the magnets horizontally. This can be done using the door of any furniture: bedside table, table, sideboard, etc.

The magnets are installed in such a way that the bottom one rests against the door, and the second one is firmly fixed by hand. Now all that remains to be done is to open the door.

It is recommended to do this not abruptly, but gradually increase the force on the magnets using the door.

Source: http://euroelectrica.ru/kak-razedinit-neodimovyie-magnityi-v-domashnih-usloviyah/

We make refrigerator magnets (and not only) from improvised, waste and natural materials

Fridge magnets are pleasing to the eye and keep our lists, photos, postcards, business cards and coupons visible. Making them with your own hands for yourself or as a gift is very interesting and easy.

After all, if you think about it, to make magnetic crafts you can use almost everything that is at hand, just use your imagination, stock up on glue and mini-magnets.

In this article, we presented 70 inspiring photo ideas, as well as 5 step-by-step lessons on how to make cool refrigerator magnets (and more) from scrap, natural, and even waste materials.

General recommendations for beginners

1. To make refrigerator magnets, you can use three types: ferrite, neodymium (super magnets) and vinyl (rubber).

• If you want your magnetic crafts to hold only light and small sheets of paper, business cards, etc., then you can use ferrite (regular graphite-colored magnets, which are most often used for souvenir products) or vinyl. The latter is a flexible vinyl material with an adhesive base, which has a low adhesive force, but can be cut into segments of different shapes and sizes. An example of the use of a flexible magnet is presented below.

• If you want a magnet to hold heavier things, then to make crafts you need to use neodymium magnets (super magnets), which have 10 times greater adhesion force. So, for example, to make a magnetic hook for a ladle or cutting board, you will need one magnet the size of a 1-kopeck coin. Keep in mind that ideally the adhesive force of the magnet should be 2 times the weight of the craft and the object it will hold.

By the way, a neodymium magnet, unlike a ferrite one, does not lose its magnetic properties over time.

Ferrite steel turns into a useless piece of iron after 8-10 years.

1. Where to get or buy magnets for making crafts? They can be peeled off from souvenir products or bought/ordered in construction markets, craft stores, as well as in specialized online stores.
2. When working with neodymium magnets, take precautions and do not involve children in making crafts. Keep in mind that two magnets attached to each other can even pinch your finger.
3. In most cases, superglue, universal Moment glue and its analogues, as well as a hot glue gun are suitable for gluing a magnet to a craft. If your craft is intended to hold really heavy things, then it is best to use a neodymium magnet with a countersink and a screw for fastening.
4. Magnets that look best on the refrigerator are those made in the same style and combined by theme, color or shape.

1. Magnets can be hung not only on the refrigerator, but also on any metal surface, for example, on a magnetic organizing board, range hood or geyser.

In turn, the magnetic organizing board can be installed anywhere, for example, on a cabinet door

See material on the topic: 8 ways to decorate a refrigerator

Master Class. 1. Hook magnets made from branches

You can hang keys, towels, ladles and other things on these branch hooks.

Materials and tools:

• A dry small but strong branch with a branch;
• Hand saw or jigsaw;
• Small neodymium magnets;
• Glue;
• Drill and drill bit equal to the diameter of the magnets;
• Acrylic paint (optional).

Instructions:

1. Using a saw, cut the branch so that it looks like a hook. Then cut the branch lengthwise so that the back side is flat as shown in the photo below on the left.

1. In this flat back of the branch, drill a recessed hole the size of your magnet.
2. Glue the magnet into the resulting cell.

1. If desired, paint the craft and cover it with matte varnish. Ready!

Master class 2. Magnetic storage jars

If you have some cute tin or glass jars, put them to good use by turning your refrigerator door or magnetic board into an organizer.

Glass baby food jars are great for storing spices on the refrigerator or hood.

Next, we present a lesson on how to make magnetic jars for storing small items with your own hands, as in the photo below.

Materials and tools:

• Small aluminum cans (cans like those in our master class can be ordered on Aliexpress for 300 rubles/10 pcs.). You can replace tin cans with glass jars or small plastic containers;
• Paint of the desired color (it is more convenient to use spray paint) and matte varnish (not necessary, but desirable to protect the coating);
• Neodymium plate magnets (especially if you want to use large jars and store heavy items in them) or 0.6mm thick magnetic vinyl self-adhesive sheets;
• Superglue “Moment” (needed if you use neodymium magnets).

Instructions:

1. Make sure the prepared jars are clean and dry. Paint them, as well as their lids, in 2-3 layers, allowing each layer to dry thoroughly. Next, coat the jars with varnish, if any.

• If you are using jars with a glass insert on the lid, you will need to remove it or seal it with masking tape before painting.

1. Cut circles from a magnetic sheet; their diameter should be slightly smaller than the diameter of the cans. If you use neodymium magnets, then glue them with superglue.

1. Glue the cut out circles to the bottom of the jar, removing the protective backing.

1. If desired, the lids of the jars can be further decorated. For example, as shown in the photo below.

Source: https://kitchendecorium.ru/accessories-decor/dekorirovanie/magnity-svoimi-rukami.html

Demagnetize magnets

Man has been using magnets in various areas of his life for a long time. Often we do not notice their presence in the devices around us and the additional convenience of their use. Today, the vast majority of household appliances and appliances are created using magnets.

However, many unexpected problems arise in everyday life, especially of a technical nature. It happens that you need to maintain or strengthen the effect of a particular magnet, and especially vice versa - demagnetize it. Let's focus on the last problem - how to demagnetize permanent magnets?

After reading a selection of our practical tips, you will find out how, in what way, and whether it is possible to demagnetize “home” magnets without outside help.

Basic methods for permanent magnets

In everyday life, it is sometimes convenient to use magnetized tools, for example, a screwdriver, which will prevent the screw from falling off at the most inopportune moment and in a hard-to-reach place. But the properties of a permanent magnet are not always useful or necessary. With the same files, drills, taps, etc. magnetized during work. It will be obviously more difficult to work due to sticking metal filings.

In this case, there are several solutions to this problem. Let's note two of them.

Method 1. Heating to a temperature above the Curie point

The Curie point is the temperature at which the symmetry of ferromagnetic atoms is destroyed. Simply put, you take your magnetized tool and heat it up quite a lot. Strict atomic symmetry is broken, and the instrument loses its magnetic properties under the influence of heat.

Method 2 . Homemade degausser

This method will require the presence of an electromagnet operating on alternating current, in the form of any coil (hollow solenoid) designed for the existing voltage in the house. There are many reel options.

Suitable, say, is a coil from an old electromagnetic bell, a solenoid relay for a car starter, etc. The primary winding from some transformer is also suitable, especially if its frame is cylindrical. Secondary - can be wound up as unnecessary.

We place the demagnetized tool inside for a few seconds and turn on the “unit” to the AC power supply.

How to demagnetize a permanent magnet reliably, and at what voltage? There are a couple of nuances:

• We connect the coil, designed for 220 V, directly to the electrical network. A 110-volt coil can similarly be connected directly to the network, but not for long. We connect the 12 volt coil through a step-down transformer.

• When demagnetizing, first remove the tool from the coil and only then turn off the power supply. Otherwise, the metal may not be demagnetized.

If there are no mentioned solenoids (from an old coil or transformer winding), you can wind a small demagnetizer coil with your own hands. How to successfully demagnetize a permanent magnet with it? A number of parameters will need to be met:

The resistance of such a winding will be about 8 ohms if:

- the solenoid frame will be 80 mm long, with an internal diameter of 30-35 mm;

— at the edges of the frame, when winding, leave cheeks 80 mm in diameter and 5-6 mm thick;

- wrap approximately a thousand turns of PEL (or PEV) wire with a diameter of 0.7-0.9 mm around the solenoid.

For large plumbing tools, you will need a more powerful (larger diameter) demagnetizer. It can be mounted from the demagnetization loop(s) of an old picture tube.

The magnets are connected to each other - how to separate them

How to demagnetize a magnet from a magnet (disconnect), especially if they are powerful? Let us immediately make a reservation that it is useless to separate powerful magnets by simply breaking them, and you can get injured. In this case, you can also give at least two pieces of advice:

Method 1: Using diamagnetic metal sheet

1. Using a metal wedge made of some diamagnetic material (duralumin, copper, etc.), try to widen the gap between the magnets, but be careful - do not use an iron hammer (it attracts).
2. Insert a sheet (can be metal) into the gap that is larger in area than the magnets, which will serve as a guarantee that everything can come back and the magnets will attract each other again.
3. Secure the lower magnet, and begin to move the upper one until you feel that it is freed from the attraction of the lower one.

Method 2. Using plywood

1. To separate the magnets, a sheet of thick plywood (10 mm) is used. A hole is made in it for the magnet (if it is impossible to create a gap between the magnets). This sheet will serve as a kind of stop for one of the magnets during the separation process.
2. Disconnection occurs in the same way as in the first example.

Everything described above are little tricks mainly for amateur locksmiths. And now a little about the twists and turns with magnets during shopping, which most of our lovely ladies so adore.

Shopping and magnets

Today, in the vast majority of supermarkets, special magnetic alarms are attached to goods, and sometimes it happens that a customer finds herself in an unpleasant situation after purchasing, for example, a new coat. The purchase is completed, but at the exit from the store this “stop light” still signals “theft” - the seller forgot to neutralize the sensor from the product.

Or the electronics may malfunction. Guard magnets are designed in a special way and vary depending on the product they “protect” - with visible or invisible labels (stickers), plastic clips, etc. And they are attached to clothes in different ways, and you can’t just unhook them, since when removed they can even ruin the material of the coat with paint.

But if this happens, and you come home with a working sensor, you still need to remove it from your new purchase, because the next time you go to the store wearing new clothes, it may not work in your favor.

But it is not necessary to physically remove the magnet from clothing (especially in inconvenient places). This problem can be solved in another way; the most effective and safest way is demagnetization with a so-called neodymium (which has the highest power) disk-shaped permanent magnet with a sufficiently large working area. It is on free sale. It is enough to move this magnet over the clip, and the sensor will be demagnetized.

You can answer the question in the same way: “How to demagnetize magnets on shoes”?

Conclusion

As you can see, there are a lot of ways to demagnetize any household magnets. If you can’t make a demagnetizer yourself, then you can contact the Internet and order it from the World of Magnets. They have a store in St. Petersburg.

Contact us!

Source: https://lesprom-spb.ru/news/razmagnichivaem-magnity

Difficulty in operation

The fact is that the forces of magnetism are invisible to the human eye. This means that the two magnets can end up dangerously close. Everything certainly depends on their overall dimensions.

The larger the size, the greater the distance required to ensure guaranteed safety. If there are two magnets, it is better to generally store them in different rooms. Magnets are delivered in spacers.

Opening the package, you will find a small block of magnets. To facilitate their separation, there is a spacer made of thick cardboard or rubber between the magnets.

Indeed, this greatly simplifies the process of separating the magnets from each other. Do not forget that they should be distributed at a distance. If you put them next to each other, they come together with a whistle.

This action could result in serious injury. Also, a big problem will be the separation of stuck magnets.

Sequencing

As a rule, neodymium magnets have a flat surface. This means that over this entire surface they are very tightly connected. Trying to separate them from each other is futile.

You can only get injured this way (the magnets are quite heavy and if you drop them on your leg, you can break your finger).

The sequence of actions is as follows:

• magnets are located on the edge of the table;
• with one hand the left magnet is fixed;
• the end of the table and the connected planes of the magnets are aligned;
• With the second hand, with maximum effort, when performing rotary movements, the magnet is gradually disconnected.

If you need to hide magnets for storage, you can use a homemade spacer. It is enough to use folded cardboard as it. The thickness of the gasket varies depending on the size of the magnets.

The video clearly demonstrates how you can separate two neodymium magnets with your bare hands:

Source: http://www.stroim-2014.ru/kak-razedinit-neodimovye-magnity-v-domashnix-usloviyax/

How to disconnect neodymium magnets without a special tool at home?

Large neodymium magnets have a tremendous adhesion force to metal and do not demagnetize over time. What to do if two magnets are connected? How to disconnect neodymium magnets at home using ordinary household tools?

Using wedges

To separate the magnets, you only need to use wooden wedges that are inserted between two magnets. You may need to take a hammer or any other percussion tools. With light blows, the wedge is driven between two neodymium magnets. As the wedge goes deeper, the adhesion force decreases. After some time, the magnets can be disengaged by hand without causing injury.

Guillotine

The use of wedges is justified if the magnets are small. But how to separate neodymium magnets, the adhesive force of which is 180 kg or more? You can use a handy “guillotine” from a desk, chest of drawers or door.

This method is based on the simple principle of cutting one of the magnets. The door frame, chest of drawers or table frame will serve as a supporting fixed part. Drawers and doors can be used as a sliding mechanism. It is worth considering that not all furniture and interior items are suitable for the task of separating magnets - only high-quality assemblies made of chipboard or wooden doors made of natural wood can withstand such loads.

Using a wooden guillotine

There is another way to separate neodymium magnets. One of the magnets must be placed in a suitable hole in the wall. The other magnet is moved to the side with a long lever - with this method you can separate two strong magnets made of rare earth materials. This method is relevant for small products, but if you need to unstick search magnets, then this method will not work - it is not always possible to find a suitable hole in the walls.

Applying your own efforts

A neodymium magnet, with a power of 150 kg or more, can be torn from metal or another magnet without any equipment - you only need your own strength. How to disconnect neodymium magnets at home or in any other environment without tools is described below.

To solve the problem, you need to install the magnets on a flat surface - this could be, for example, a table. It is important to place the parts so that the connection line runs along the edge of the table or bedside table. You should pay attention to one point: one of the magnets should lie on the surface, and the second should hang from it.

To disconnect, hold the object lying on the table with one hand, and firmly clamp the hanging element with the other. To fail, you will need to make every effort. The force vector is directed vertically - the force is directed perpendicular to the plane of the table or surface on which the magnet lies. After you manage to unstick the two connected elements, one of them must be set aside at least a meter from the other.

Here's how to separate neodymium magnets using human capabilities. If it doesn’t work out the first time or you don’t have enough strength to break it, then it’s better to use one of the methods described above.

If a magnet sticks to a metal surface

Sometimes the powerful rare earth neodymium magnet will stick to various metal surfaces. This could be an entrance door, a sewer hatch, or a car body. If it is a powerful search magnet, then to disconnect it you will have to put in a lot of effort or use improvised tools. How to separate neodymium magnets at home or unstick a magnet from a metal surface? The following method is proposed.

If the surface is flat and smooth enough, then the easiest option is to move the magnet to the edge of the sheet of metal. If this method is not effective, then it will be safer and more reliable to use wooden wedges.

Source: https://labuda.blog/200415

How to demagnetize metal at home

Craftsmen when working with various metals are faced with a problem - magnetization of tools. In some jobs, magnetic properties help with actions, for example, with a magnetic screwdriver you can install a screw in a hard-to-reach place. The build-up of metal shavings when using a caliper, file or drill can interfere with marking or a straight cut line.

How to demagnetize metal at home

The main reasons for metal magnetization

Magnets are media that create their own magnetic field. Main groups of magnets:

• paramagnetic materials;
• ferromagnets;
• Diamagnets.

Steel products based on alloys of iron, cobalt or nickel refer to substances whose own magnetic field is higher than the external one, i.e. to ferromagnets. The magnetization of a substance is considered to be the sum of the magnetic properties of particles per unit volume.

At the moment the Curie temperature threshold is reached, spontaneous domains with magnetization are formed, which spread until they are completely filled. Under normal conditions, it is possible to obtain a magnetized tool when working close to electric motors, magnetrons and other elements. The metal takes away the properties of magnetism from a nearby emitter, thereby becoming magnetized.

Magnetized screwdriverMagnetized paper clip

Working with small parts with a magnetized tool can cause a lot of trouble. Sharpening metals with increased magnetism properties is impossible to ideal sizes, because... the material is covered with shavings.

Using a demagnetization device

The demagnetization device comes in three variations. The basic elements can be selected at home, using simple methods that do not require much effort to manufacture. There are special devices that can both demagnetize and magnetize an element.

Magnetometer

Magnetometers are used in the following sequence:

• The magnetic field strength of the instrument is an important parameter that needs to be determined, because it is possible to get a negative result;
• the same parameter must be found on a magnet of the opposite sign;
• touching the tool to the area of ​​the device will demagnetize it.

The process takes place within 10 seconds; at home, no connection to the electrical network is required. The functionality is checked as follows: the self-tapping screw is brought to the magnetized metal, and the level of magnetization is checked. Afterwards the demagnetization process occurs and is checked again.

Methods for demagnetizing metal

There are several ways to demagnetize metal structures. Devices are used depending on the frequency of use, purpose and power. Before you demagnetize metal at home, you need to understand the existing structures.

1. An ordinary magnet is large in size; a tool is held over it at a minimum distance, on the verge of the attraction process. The magnet can be removed from an old speaker, most of which are round in shape. The process is carried out when the product is removed from the structure, loosening it; the further the tool is from the structure, the smaller the amplitude. The location of the axis on which there is no magnetic field depends on the design of the product.
2. More frequent use will require a device operated at home from the mains. It is possible to make the device at home or purchase it at radio parts stores. The main component is a coil of wound wire connected to a transformer. The supply of alternating current allows you to demagnetize the element, direct current - vice versa.

Removing magnetization with a magnetometer

There are many variations and kits for demagnetizing metals in production.

Tunnel devices include a coil having an opening connected to a network.

The size of the hole can be different, depending on the purpose and dimensions of the parts being processed. Multi-band magnets driven by motion, rotation of which occurs with speed control, the impact and change in amplitude is carried out by moving the part away from the body.

Electromagnets operate from a 220 or 380 volt network and allow you to demagnetize an element with a tap for a certain time. Container mechanisms allow you to install the product to a device in which the necessary environment is automatically created.

How to make a demagnetization device at home

It is possible to make an electromagnet for demagnetization at home; for this you will need some materials and available tools. Operation occurs by controlling the current; constant voltage can magnetize the element, while alternating voltage, on the contrary, produces action.

Homemade device for demagnetizing metals

The coil can be made from parts of an old TV, or rather the demagnetization loop of a kinescope. It is important to maintain consistency during manufacturing for a correct process.

• The loop is folded several times until the coil reaches the required diameter. If one loop is not enough, you can sequentially add a second one; this design will allow you to work with large elements.
• A fuse and a button are connected for normal, uninterrupted operation.
• Designs for 220 Volts can be used constantly, those designed for 110 V are connected for a short time, 12 V are used through a transformer.

Installation for demagnetization from a transformer

The resulting mechanism is perfect for large parts. When working with small devices, you can prepare a mini kit at home. For operation, any coil is used, for example from an old reel-to-reel player, connected in series with a transformer. Use occurs by applying voltage, the part is placed near the mechanism, then removed, while the power of the device remains on.

Source: https://stankiexpert.ru/tehnologii/kak-razmagnitit-metall-v-domashnikh-usloviyakh.html