Which precious metals are magnetic?

Search magnets for gold and silver: operating principle, review of models and prices

Treasures, treasures, hiding places, jewelry These words reek of adventure, adventurism, and romance.

Who didn't dream of finding treasures as a child?

Some adults have kept their childhood dreams and are making them come true by engaging in treasure hunting.

Like all passionate people, amateur search engines have their own clubs and communities. There they exchange experiences, discuss search devices, and make collective forays.

Modern devices for detecting metals help treasure hunters. One such device is a search magnet. More about it below.

Design and types

A search magnet is capable of finding, capturing and lifting metal objects whose weight is much greater than the device itself by 50-100 times. The device is otherwise called an eternal or powerful magnet.

The working fluid consists of a neodymium magnet (contains Nd-Fe-B) enclosed in a glass-shaped turned steel body.

The body is coated with zinc, and the body is coated with nickel, which allows to be used for searching in water .

The housing protects and shapes the magnetic field in the correct direction. There are:

1. Single-sided - convenient for searching from a boat, pier, bridge.
2. Double-sided - have a universal purpose.
3. Trawls are good for examining the bottom of reservoirs.
4. Rods – for narrow and hard-to-reach places for conventional magnets.

They also differ in body diameter and magnetic strength .

A special bolt (eye bolt) is screwed into the top or side, intended for a cable or rope.

The second function of the bolt is that it is used to remove an object from a magnet.

To do this, the eye bolt is screwed completely into the body, after which the magnetized object can be removed.

Search magnets are most afraid of high temperatures (above +80); when exposed to strong heat, they lose their functions .

It is easy to work with: having attached it to a rope or cable, it is simply lowered into the desired place.

Objects containing ferromagnetic metals will be attracted to the device. Together with a magnet, they can be removed to the surface.

The fundamental difference is that a metal detector can only indicate the location of an object, while a magnet allows you to immediately “get” it. However, a magnet will not help when searching in the ground . Therefore, these two devices in the seeker’s arsenal are designed to complement each other, but not replace each other.

Other distinctive features:

• the magnet retains its functions in an aqueous environment ;
• no need to buy batteries or accumulators ;
• absence of sound signals that attract attention or “declassify” the seeker;
• do not take up much space, easy to take with you;
• objects are attracted on their own ;
• affordable price;
• resistant to damage;
• long service life, provided that the operating rules are followed - they lose one percent of their strength in a hundred years .

Where can it be used?

Used to search for objects outside the field of view :

• in caves;
• mountain failures;
• wells;
• sewers;
• bodies of water;
• swamps.

A magnet will be a good help during archaeological excavations and searches for wartime items.

Usually used in tandem with a metal detector. Using a magnet, excess, unnecessary metal is collected, but which will be “distracted” when searching with a metal detector. The metal detector then searches for more valuable alloys such as gold and silver.

Objects that are made of metals that have ferromagnetic properties can be attracted by such a magnet. For example, cast iron or nickel.

Ferromagnetic properties are properties of base metals that allow them to “stick” to magnets with great force.

The burning question is, is it possible to lift objects made of precious metals using a magnet?

It is possible if the composition contains metals that react to magnetic attraction.

There is no special search magnet for gold and silver .

However, it is quite possible to obtain jewelry and coins made of precious alloys with its help, because they also contain other elements that the magnet will attract.

For example: 585 standard gold consists of 58.5 percent of gold. The remaining 41.5 percent comes from other metals, including nickel.

Nickel is easily attracted to a magnet. However, in order for such jewelry to be lifted, there must be a touch to the jewelry find.

It's the same story with silver. If the alloy has ligatures (metals added to jewelry to increase wear resistance), objects or jewelry will be attracted.

Review of popular devices and their prices

China is considered the leader in production . Approximately 130 enterprises in China produce neodymium magnets.

These products are manufactured in Russia

• scientific and production company "Supersistema", Moscow;
• ZAO NPO REDMAG, Kaluga;
• LLC "Plastic" in St. Petersburg;
• LLC "Research and Production Company "Magnites and Systems", St. Petersburg;
• Nepra company, Moscow region, Zheleznodorozhny;
• NPO "ERGA" in Kaluga.

Name	Diameter, mm	Height, mm	Breakout force, kg	price, rub.
Research and production company "Supersystem"
F80 (single sided)	48	10	80-90	690
F150 (single-sided)	68	15	170-190	1190
F600 (single-sided)	130	24	660-690	4290
Double sided F150x2	68	24	170-190 on each side	1940
Double sided F600x2	130	39	660-690 each side	7290
JSC NPO REDMAG
F300	94	28	600	3050
F600	136	25	600	5450
Made in China (according to information from the Polyus-magnet online store)
F300	94	28	300	2750
F400	116	20	400	3200
F600	136	25	600	4900

As in any serious matter, caution is important :

1. Ask the people you are going on search trips with to see if they have pacemakers . The device can disrupt the normal operation of the pacemaker.
2. Credit cards with a magnetic stripe, mechanical watches, hearing aids and telephones should be kept away from the magnetic device.

Easy to use and maintain, affordable, these devices can help with:

• searching for gold and other precious metals;
• when digging non-ferrous metal and ferrous metal.

There are practically no restrictions on the place of application. At the same time, they are durable and do not lose their properties.

If the operating rules are followed, search magnets will help in searches for a long time.

Source: https://rcycle.net/metally/dragotsennye/poiskovye-magnity-na-zoloto-i-serebro

What metals are magnetic - Metalist's Handbook

Only steels have magnetic properties , and not all of them. For example, austenitic stainless steels do not attract magnets because they do not have ferromagnetic properties.

However, there are a sufficient number of enthusiasts who believe that magnetic waves are emitted by any metal, and therefore there should be a search magnet for gold and silver, and for some this expression is quite normal for perception and practical use.

ATTENTION! MAGNETS FOR SEARCHING GOLD, COPPER, SILVER DO NOT EXIST!

THEY SIMPLY ARE NOT - ANYWHERE!

In our article we describe the theory of how non-ferrous and precious metals can be detected using magnetic fields. This article is our fantasy, supported by scientific developments of foreign scientists.

See also the article - Extraction of scrap metal from water (about ferrous metal and search magnet).

Device for adjusting the magnetic field from metal objects

Strictly speaking, this is not a magnet, but rather an electromagnet, with the help of which you can initiate and configure any magnetic radiation, even quite weak ones, to be captured by appropriate devices. It is not easy to build such a device, but the authors, citizens of Australia, have no doubt about its effectiveness.

That's why they patented their invention in their patent office. Based on the fact that Australian soil is not much different from domestic soil, we will give a description of the device and operating principle of such a magnet for gold and silver.

Although it is necessary to repeat - in the generally accepted sense, this design has nothing .

The operation of the device is based on the well-known physical fact that when any object that generates magnetic oscillations in an alternating electric field moves, changes occur inside the trapper circuit associated with the movement of atoms around the nucleus.

If the area of ​​electric field generation is sequentially moved along or across the magnetic field from a metal object, changes will occur in this area, the intensity of which determines the degree and strength of the interaction of two fields - magnetic and electric.

The difficulty is that strong magnetic fields are not created by noble metals .

It is known, for example, that, according to the principle of decreasing, the electrochemical potentials of non-ferrous metals are located as follows (we consider only the area of ​​interest to us): copper → mercury → silver → palladium → platinum → gold.

Thus, if the expression “is copper attracted to a magnet” may still have some basis, then the phrase “magnet for gold” does not make any sense at all.

It is more correct to talk about an electromagnetic trap, which will record the fact of a coordinated change in electric and magnetic fields in a certain, rather local, metallic volume.

— how copper interacts with a magnet:

Recording of changes that occur in the apparatus under the influence of such fields is captured by the measuring circuit.

It is a highly sensitive spring made of rhenium, a rare metal that is absolutely insensitive to temperature changes. The rhenium spring must be adjusted to operate.

  The process is to set the conditional zero of the device, for which it is placed as far as possible from all metal objects.

In urban areas, such a “search magnet for gold, silver and other precious metals” will not work. However, search engines are much more likely to look for gold, platinum, copper, silver, etc. in old abandoned rural estates

With any movement of the device, a similar action occurs with the electric field, while the magnetic field remains constant in coordinates. Therefore, the resulting movement of the spring will also be different.

Where it turns out to be most intense, its source is almost certainly located - the magnetic field. Another thing is that this kind of search magnet for non-ferrous metals will not be able to show which metal is hidden under the thickness of wood or earth.

But the device will definitely show that there is metal there.

Any metal can be detected by a magnetic field

The principle of operation of such a pseudo-magnet is similar to the coils of a metal detector, with the only difference being that the “magnet” will be tuned to only 1 metal and this is in theory - but we don’t know how it will behave in practice, BUT, most likely, it’s cheaper, faster and simpler will use an ordinary metal detector to search for non-ferrous metals, since not a single wizard has yet invented a magnet for non-ferrous and precious metals, maybe because there are no wizards!

How to assemble and set up

It will be very difficult to find/buy a rhenium spring, but all other parts of the device are quite accessible for making yourself. The sequence is:

1. A steel axle is made from a thin-walled steel pipe with a diameter of no more than 16 mm. Its length should not be less than three diameters, otherwise the change in the magnetic field cannot be detected.
2. A frame is made from thin copper or brass wire. The authors do not describe its dimensions, but, based on the dimensions of the tubular axis, it should be at least 200x200 mm. The frame must be sufficiently rigid.
3. Three (as many as possible) holes are drilled in the tubular axle at equal distances, in which the wooden axles are placed.
4. Thin-walled wooden disks are made, the number of which must correspond to the number of holes drilled in the axle. Obviously, discs can also be made of plywood: what matters is the mass of the disc and its absolute immunity to magnetic fields.
5. The central sectors of each disk are covered with metal foil made of the metal that will be searched. Thus, a search magnet for non-ferrous metals - copper, gold and silver (platinum is searched for much less frequently) should have three sets of replaceable wooden disks.
6. The frame with disks must be able to move freely along the entire tubular axis with fixation in a certain place. If the fits of the mating parts are made with the required accuracy, then there should be no swaying of the frame when it moves.
7. To create a magnetic trap, plates from an old transformer are used, which are packed into the frame outline. The distance between adjacent plates should not exceed 1.5 mm in thickness and 56 mm in length. Such plates form the screen of the device that perceives magnetic radiation.
8. Next, assemble the magnetic coil. You will need a solenoid made of 600 layers of enameled wire, which is connected to an alternating current voltage source. The winding should be multilayer, this will reduce the parasitic capacitance of the coil and make the device less inertial.
9. A ferromagnetic or - which is better - a ferroelectric core is inserted inside the coil.
10. By connecting this structure through a step-down transformer, a constant position of the frame with the plates is achieved relative to the wooden disks. This will be the conditional zero of the search “magnet” for non-ferrous metals.

The easiest way to check whether a search “magnet” attracts gold and silver is on a real object made of these metals. At the same time, it will be possible to establish the practical sensitivity of the device.

about how a search magnet does NOT magnetize gold, silver and other coins

Source: https://ssk2121.com/kakie-metally-magnityatsya/

Search magnet for gold and silver and its properties

Typically, powerful magnets are designed to find precious metals. A search magnet reacts to gold and silver quite strongly, and although it is difficult to find them in their pure form, its power is enough to pick up jewelry and coins from the ground. The main goal of all search engines is treasures, expensive coins, and sometimes just ferrous metal.

The article will describe the structure of the magnet and the basic principle of operation. He will also figure out what exactly can be found with its help and how to find expensive alloys. It will be explained in detail what ferromagnets, paramagnets and diamagnetic materials are. In addition, valuable tips and recommendations will be given that will greatly simplify the search for valuable items.

Search magnet device

This device consists of a steel case, inside of which there is a neodymium magnet. It is made from a rare alloy containing neodymium, iron and boron. This compound has a powerful attractive property. Despite its compactness, it is capable of holding things tens of times its own weight.

To make it easier to get various things, the case is equipped with a special mount. It is screwed into the magnet body via a thread. On top of the fastener there is a fastener in the form of a hook or loop that will hold the cable or rope. This mount has a rigid base that is firmly screwed into the body. The entire structure has a reliable foundation, and in this case, there is no fear in lifting any expensive and heavy thing.

Principle of operation

The search magnet has rather poor functionality. The main task of such an object is to attract as many metal objects as possible. But the device copes with its main task more than well. Thanks to its unique design, it has great strength and is able to hold quite large objects, as well as objects containing gold or silver, which ordinary magnets cannot handle.  

This is especially convenient when getting things out of wells, funnels and various pits. It's also good to use this thing underwater. In water, all objects are subject to great resistance, and picking up any object becomes a rather labor-intensive task. But with a neodymium magnet, searching and removing such objects is greatly simplified.

What items can be found

When asked what kinds of things can be found using a search magnet, iron objects, including coins, immediately come to mind. Almost all paramagnetic metals can be found. Simply put, materials that are attracted to the magnet body, but more on that later. Such coins, or precious metals, can be of great value. For example, you can find iron coins from the period of Tsarist Russia, as well as many rare Soviet coins.

Powerful magnets can attract metals such as:

• aluminum
• copper
• tin
• brass
• lead

Most searches are carried out in attics, in various beaches and public places where people can lose things, as well as in wells and pits. In such places they usually find costume jewelry, expensive jewelry, various metal boxes, and sometimes even expensive mobile devices (on the beach). This is what finding things on land is all about.

As for water, you can also find many valuable things, including gold jewelry. Also, thanks to superstitions, a whole fortune of coins can be raised from the bottom. Moreover, there is no need to get coins from city fountains, since there are quite a lot of abandoned wells that no one needs, but they store precious things.

Does a magnet attract gold and silver?

Is it possible to find pure gold or silver with powerful magnets? No, since such metals are diamagnetic, that is, they are not attracted to magnets. But it's not all bad, thanks to all the power of neodymium alloy, it is possible to get some jewelry. Such objects usually have a ligature in them.

This alloy helps precious metals such as gold or silver acquire certain properties. For example, silver jewelry does not darken as much, but gold jewelry is more durable. But the most important thing is that the ligature allows magnetization and makes it possible to find various alloys.

But it is also possible to find pure gold or silver. At the beginning of the article it was said that iron boxes can be found. Typically, jewelry made of gold or silver is stored in such cases. So, walking through an attic or similar places, you can get rich, in the literal sense of the word.

Magnetic properties of various metals

In order to go hunting for valuable metals, you need to know what exactly will be attracted to a magnet. Since metals have different magnetic properties, and some do not have them at all. They can be divided into three groups:

1. ferromagnets

2. paramagnets

3. diamagnetic materials

Ferromagnets are metals with some of the best magnetic properties. Such metals are highly magnetic. These include ferrous metal.

Paramagnetic materials have the usual properties; they are readily attracted to a magnet, but do not have the function of magnetization. These include some alloys of jewelry and several types of non-ferrous metals.

And finally, diamagnetic materials. Such alloys are extremely difficult to respond to magnetic fields and greatly complicate the search for truly precious things. Diamagnets include gold, silver, aluminum, patina and other metals that even the strongest magnet does not pick up.

Is it possible to find gold with a magnet?

As already discussed earlier, jewelry and coins with gold can be lifted, but it is very problematic.

It is impossible to get pure gold with a magnet.

But if various factors are favorable, such as an iron box or paramagnetic jewelry lying nearby, then there is a chance to find it. Basically, only jewelry containing gold, such as bracelets, earrings and rings, can be caught with a magnet. The best places to search are sandy beaches, wells, and the sea or river bottom where a large number of people swim.

Source: http://lombardyinfo.ru/stati/poiskovyj-magnit.html

What metals are not magnetic to a magnet list

Any child knows that metals are attracted to magnets. After all, they have more than once hung magnets on the metal door of the refrigerator or letters with magnets on a special board. However, if you put a spoon against a magnet, there will be no attraction. But the spoon is also metal, so why does this happen? So, let's find out which metals are not magnetic.

Scientific point of view

To determine which metals are not magnetic, you need to find out how all metals in general can relate to magnets and a magnetic field. With respect to the applied magnetic field, all substances are divided into diamagnetic, paramagnetic and ferromagnetic.

Each atom consists of a positively charged nucleus and negatively charged electrons. They move continuously, which creates a magnetic field. The magnetic fields of electrons in one atom can enhance or cancel each other, depending on the direction of their movement. Moreover, the following can be compensated:

• Magnetic moments caused by the movement of electrons relative to the nucleus are orbital.
• Magnetic moments caused by the rotation of electrons around their axis are spin moments.

If all magnetic moments are equal to zero, the substance is classified as diamagnetic. If only spin moments are compensated - to paramagnets. If the fields are not compensated, use ferromagnets.

Paramagnets and ferromagnets

Let's consider the option when each atom of a substance has its own magnetic field. These fields are multidirectional and compensate each other. If you place a magnet next to such a substance, the fields will be oriented in one direction. The substance will have a magnetic field, a positive and a negative pole.

Then the substance will be attracted to the magnet and can itself become magnetized, that is, it will attract other metal objects. For example, you can magnetize steel clips at home. Each one will have a negative and a positive pole, and you can even hang a whole chain of paper clips on a magnet.

Such substances are called paramagnetic.

Source: https://moreremonta.info/strojka/kakie-metally-ne-magnitjatsja-k-magnitu-spisok/

Why is gold jewelry magnetic?

To understand why gold jewelry is magnetic, you need to understand what and how it is created. Gold is a special metal with unique properties. This material is resistant to acids and oxidation processes. Although gold is very dense, it is still quite ductile. Therefore, when creating jewelry, in addition to the described metal, other materials and alloys are used, which give the jewelry strength.

If the alloy with gold includes silver and copper, the product will not respond to a magnet. If jewelry is susceptible to the influence of a magnetic field, it means that the alloy contains metals that are attracted by a magnet. Based on this, we can assume that the product is ordinary jewelry.

Features of interaction

The peculiarity of pure 999 gold (one thousand grams of the material contains 999 grams of precious metal) is that it does not interact with a magnet. If you put a magnet near a gold bar, the metal will not be attracted to it.

It is worth noting that gold alone is never used to make jewelry. This is due to the fact that the metal in its pure form is incredibly ductile and very brittle. Therefore, pure gold is not suitable for long-term use as jewelry.

We recommend reading: Are there any valuable 5 rubles issued in 1991?

In this regard, the jewelry industry uses only alloys that contain, in addition to the base metal, other materials to make precious jewelry more durable.

Note! An alloy containing gold will be strong enough if metals such as nickel, silver, palladium, copper, platinum or zinc are added to it.

There are several types of metals that are easily attracted to a magnet, namely:

• gadolinium;
• iron;
• cobalt;
• nickel;
• steel;
• alloys of the listed metals.

However, there are some metals that are poorly attracted to a magnet, including aluminum and copper.

As for bismuth, gold (both yellow and white) and silver, they do not react to a magnet at all, or even, on the contrary, repel it from themselves. In this regard, we can say with complete confidence that real gold jewelry, which was made from high-grade metal, will under no circumstances come into contact with a magnet.

Gold will not react even to a search magnet. Such a device can only be used as additional equipment in the search for precious metals. Using a search magnet, you can clear the area under investigation from metal debris to make it easier for the metal detector to detect gold or other metal.

We recommend reading: How much can you get for Russian 2 rubles in 2013?

This is explained by the fact that a high-grade alloy must have a purity of no less than 585, where 58.5% is pure gold, and the remaining 41.5% belongs to copper and silver. In this combination, metals will not be affected by the magnetic field (copper reacts weakly to a magnet, and silver and gold do not magnetize at all).

Advice! Considering the above, experts recommend using a magnet to check the authenticity of jewelry at home.

Why is gold jewelry magnetic?

The reason that gold jewelry is magnetic is that the product contains an element that is susceptible to the influence of a magnetic field. If the gold has a 585 standard (or any other), but it is attracted to a magnet, therefore, the jewelry is a fake, containing cobalt, iron or steel.

Sometimes fake jewelry is made entirely of copper, so it reacts poorly to the influence of a magnetic field. Therefore, counterfeits are often made from copper, and in order to give the product an appearance like gold, the product is coated with a layer of gold plating. Also, such “jewels” may indicate the purity, but upon first checking for authenticity, it turns out that this decoration is ordinary costume jewelry.

We recommend reading: 4 most valuable coins of 2002

The most common alloys from which fake jewelry is made are:

• aluminum bronze (10% consists of aluminum, the rest is copper);
• platinum (the alloy mainly consists of copper, and also includes a small part of zinc, nickel, silver and platinum);
• goldin (an alloy of aluminum and copper);
• bartbronze (contains tin and bronze in equal proportions).

If you find that the jewelry is susceptible to the action of a magnet, you should seek help from a specialist who can assess the authenticity of the jewelry.

Note! The home method of checking precious jewelry using a magnet will not give a 100% guarantee that the result obtained is correct.

Source: http://inzoloto.ru/investicionnye-monety/pochemu-magnititsya-zolotoe-ukrashenie

Search magnet for gold and silver: what is it, does it exist, what metals does it attract, operating principle and assembly

We are glad to welcome you to our website, dear guests. Today we will talk about whether there is a search magnet for gold and silver, the principle of operation of the magnet, useful properties and methods of application. We will review the models and suggest a way to build such a device yourself. Stay, it will be interesting.

Magnetic field and metals that conduct it

A magnetic field is a force that can influence electric charges, atomic nuclei, and simplest particles. This is matter that arises from the interaction of particles that have their own charge. All substances react to this field, and some emit it.

Depending on the reaction, the substances are distinguished:

1. Ferromagnetic materials react to fields and retain magnetization. Thus, they themselves begin to emit their own field.
2. Paramagnetic materials - the electrons in their composition react to a magnetic field so weakly that such a reaction can only be detected using special measurements. Such substances include platinum, aluminum, oxygen.
3. Diamagnets are substances that do not attract, but, on the contrary, repel from a magnet, exhibiting negative susceptibility. Diamagnets include copper, water, carbon, gold, and silver. Most substances known to science are diamagnetic.

Differences from a metal detector

The operating principle of a metal detector is also based on electromagnetic radiation, however, this device does not attract metals to itself, but captures echoes of the “response” of substances to the field it emits. If there is metal in the ground or water, the device gives a signal. Further work on retrieving objects falls on the person.

The magnet does not provide any information, but simply “attracts” to itself those objects that it is capable of influencing.

Where can it be used

There are areas where you cannot do without a device:

• deep wells;
• rock crevices;
• the bottom of reservoirs, including at great depths.

The device allows you to explore such places and remove objects located there without additional effort.

Can you attract silver and gold?

Precious metals are diamagnetic, so they cannot be extracted using a magnet. An exception may be objects that contain parts made of ferromagnetic metals, and such a part must be voluminous enough to be attracted.

You should not rely on the device to magnetize precious alloys. As a rule, the proportion of ferromagnets in the composition of the alloy is extremely small.

If you want to search only for precious metals, you are better off purchasing a metal detector.

What metals still attracts

The most famous ferromagnets:

• among metals - iron, cobalt, nickel, chromium;
• their alloys, such as cast iron and stainless steel.

Rare earth metals (lanthanides) are attracted to the device. Manganese, sulfides, selenides and tellurides have ferromagnetic properties.

Advantages and disadvantages

The indisputable advantage of a magnet is its ease of use:

• it does not require special storage conditions; you should, perhaps, avoid heating it above 80 degrees;
• does not need recharging;
• has a very simple design;
• takes up little space.

The disadvantage is that it cannot be used to extract gold, silver, and their alloys, including nuggets.

Another thing is metal detectors. The advantage of modern metal detectors is their ability not only to find, but also to distinguish which metal is within its coverage area. How does this feature work? This was made possible thanks to the use of a computer in the design of the device, which analyzes all incoming signals, reacting to the smallest changes.

Is it possible to make money searching for gold and silver with a magnet?

It is impossible to effectively search for precious metals using only a magnet. However, you can use it as an additional device, along with other equipment.

Using it, you can clear the surface of the search site from metal debris, which usually makes it very difficult to detect silver and gold with a metal detector.

Tips for choosing

In addition to their shape, the devices also differ in the strength of the radiation and the method of attaching the cable.

Experienced treasure hunters are advised to choose powerful double-sided magnets, since they are universal and easy to use, although they are more expensive.

Weight and ammunition

Any tool is most effective if it is selected in accordance with the task at hand. The choice of magnet is no exception. To begin with, you should decide what items it will be used to search for, and based on this, select the appropriate device.

It should be taken into account that the higher the power of the magnet, the greater its mass and cost. The optimal option is 400 kilograms. This is not the weight of the magnet, but the weight it can lift!

In addition to the magnet itself, you will need a cable with which the search device can be lowered to the bottom of the reservoir. It is better to choose ammunition with a large margin of safety, exceeding the power of the magnet itself, in order to avoid ruptures and loss of the device. Finding him later is almost impossible.

How to assemble and set up a magnet with your own hands

Making a magnet at home is not an easy task if you don't have neodymium supplies on hand. But building an electromagnet using not a rare ferromagnet, but an electric field, is quite simple.

Required Components

To build an electromagnet you will need:

• iron for the core (nail, lock shackle);
• copper insulated wire;
• source of electric current (battery, accumulator);
• connecting wire;
• soldering iron

Assembly sequence

Copper wire is wound tightly, neatly, in one direction, onto the core. If a regular AA battery is used as the power source, you can connect it directly to the ends of the winding. For power supplies and batteries, it is necessary to solder the connecting wires (twisting and insulation are also allowed).

See the assembly visually in the video:

How to use it correctly

To search for valuables, it is better to use industrially made magnets. When purchasing a device, it is better to choose units with an eye bolt, which makes it much easier to separate the magnet from the object.

Safety precautions and what to be careful with

It should be remembered that the magnet affects all objects nearby, including pacemakers.

For a person who has such a stimulator, the magnet is dangerous, as it can cause malfunctions in the operation of the medical device.

Mobile devices and bank cards should also be protected from electromagnetic influence to avoid their failure.

How to distinguish a counterfeit coin from an original using a search magnet

If a coin is stuck to the device, you can be sure that it does not contain either gold or silver. A precious coin or jewelry will remain in its place when exposed to the device.

Tips for caring for your device

If work was carried out in water, after use the device must be thoroughly wiped from moisture and dried to avoid rust.

Protect the device from strong shocks, since neodymium cores are quite fragile, and if a crack or chip occurs, they lose power.

Reviews

Egor: “The magnet is great for removing small metal debris from soil dumps when working at a mine. I recommend".

Andrey: “It’s a great thing to get change out of fountains, especially in Europe.”

Victor: “Such a thing is of little use when searching for gold and silver, but for diggers who hunt in battlefields and look for artifacts of the Great Patriotic War, it is an irreplaceable thing.”

Conclusion

I hope this material has helped you clarify the question of what is the use of a magnet and whether it is worth acquiring such a device to search for valuable items.

Don't forget to comment on what you read and share articles on social networks. And we take our leave, all the best.

Source: https://zhazhdazolota.ru/dobycha/poiskovyj-magnit-na-zoloto-i-serebro

What metals are not magnetic and why?

Any child knows that metals are attracted to magnets. After all, they have more than once hung magnets on the metal door of the refrigerator or letters with magnets on a special board. However, if you put a spoon against a magnet, there will be no attraction. But the spoon is also metal, so why does this happen? So, let's find out which metals are not magnetic.

Diamagnets

In diamagnetic materials, the magnetic fields inside each atom are compensated. In this case, when a substance is introduced into a magnetic field, the movement of electrons under the influence of the field will be added to the natural movement of electrons. This movement of electrons will cause an additional current, the magnetic field of which will be directed against the external field. Therefore, the diamagnetic material will be weakly repelled from the nearby magnet.

So, if we approach the question from a scientific point of view, which metals are not magnetic, the answer will be – diamagnetic.

Distribution of paramagnets and diamagnets in the periodic table of Mendeleev elements

The magnetic properties of simple substances change periodically with increasing atomic number of the element.

Substances that are not attracted to magnets (diamagnets) are located mainly in short periods - 1, 2, 3. Which metals are not magnetic? These are lithium and beryllium, and sodium, magnesium and aluminum are already classified as paramagnetic.

Substances that are attracted to magnets (paramagnets) are located mainly in the long periods of the Mendeleev periodic system - 4, 5, 6, 7.

However, the last 8 elements in each long period are also diamagnetic.

In addition, three elements are distinguished - carbon, oxygen and tin, the magnetic properties of which are different for different allotropic modifications.

In addition, there are 25 more chemical elements whose magnetic properties could not be established due to their radioactivity and rapid decay or the complexity of synthesis.

The magnetic properties of lanthanides and actinides (all of which are metals) change irregularly. Among them there are para- and diamagnetic materials.

There are special magnetically ordered substances - chromium, manganese, iron, cobalt, nickel, the properties of which change irregularly.

What metals are not magnetic: list

There are only 9 ferromagnets, that is, metals that are highly magnetic, in nature. These are iron, cobalt, nickel, their alloys and compounds, as well as six lanthanide metals: gadolinium, terbium, dysprosium, holmium, erbium and thulium.

Metals that are attracted only to very strong magnets (paramagnetic): aluminum, copper, platinum, uranium.

Since in everyday life there are no such large magnets that would attract a paramagnetic material, and also no lanthanide metals are found, we can safely say that all metals except iron, cobalt, nickel and their alloys will not be attracted to magnets.

So, what metals are not magnetic to a magnet:

• paramagnetic materials: aluminum, platinum, chromium, magnesium, tungsten;
• diamagnetic materials: copper, gold, silver, zinc, mercury, cadmium, zirconium.

In general, we can say that ferrous metals are attracted to a magnet, non-ferrous metals are not.

If we talk about alloys, then iron alloys are magnetic. These primarily include steel and cast iron. Precious coins can also be attracted to a magnet, since they are not made of pure non-ferrous metal, but of an alloy that may contain a small amount of ferromagnetic material. But jewelry made of pure non-ferrous metal will not be attracted to a magnet.

What metals do not rust and are not magnetic? These are ordinary food grade stainless steel, gold and silver items.

Source: https://News4Auto.ru/kakie-metally-ne-magnitiatsia-i-pochemy/

What metals are magnetic - Metals and their processing

Typically, powerful magnets are designed to find precious metals. A search magnet reacts to gold and silver quite strongly, and although it is difficult to find them in their pure form, its power is enough to pick up jewelry and coins from the ground. The main goal of all search engines is treasures, expensive coins, and sometimes just ferrous metal.

The article will describe the structure of the magnet and the basic principle of operation. He will also figure out what exactly can be found with its help and how to find expensive alloys. It will be explained in detail what ferromagnets, paramagnets and diamagnetic materials are. In addition, valuable tips and recommendations will be given that will greatly simplify the search for valuable items.

Can gold be magnetic? How to determine its authenticity using a magnet?

Can gold react to a magnet? The answer to this question lies in the properties of metals, their alloys and physical characteristics. Why are some materials able to be attracted to a magnet, while others, on the contrary, do not react or even repel it?

Paramagnetic substances are found in nature - substances that can become magnetized when exposed to an external magnetic field. These include ferric chloride, platinum, tungsten, sodium, etc. All of them belong to the group of weakly magnetic materials. Their atoms are capable of changing their position under the influence of an external field. They are attracted to it, but if there is no field, the paramagnetic does not become magnetized and remains at rest.

The property of paramagnetic materials to attract each other appears only at low temperatures. In more comfortable conditions, magnetism appears in such metals and alloys as:

• nickel;
• iron;
• cobalt and others.

Materials that can change the magnetic field are divided into:

• hard;
• soft;
• magneto-optical;
• thermomagnetic.

There are also materials that are capable of changing their size and volume when exposed to a magnetic field.

In addition to paramagnetic materials, there are their opposites - diamagnetic metals and alloys, which will not exhibit magnetic properties under any conditions. This is due to the fact that there is an even number of electrodes on their outer shell.

Physical properties of metals

Metals and alloys are characterized by the presence of atoms that do not change their state and position under any conditions. The same applies to gold. Its physical properties are determined by the presence of free electrons, between which a metallic bond occurs. It defines their main characteristics:

• shine;
• plastic;
• conductivity of electric current;
• magnetism.

The latter indicator allows the use of raw materials in radio and electrical engineering.

Gold can be magnetic under certain conditions:

• it contains impurities that react to a magnet;
• the product is simply covered with a layer of gold, under which there is a paramagnetic material;
• gold is present in the alloy in a small proportion, and the rest is made up of metals that react to a magnetic field.

With the advancement of technology, the fact that the precious metal is not magnetic has been questioned. Several years ago, a group of scientists from Australia and Japan conducted an experiment. By chemical means, the properties of gold were changed, and its atoms acquired the ability to be magnetic. In a similar way, you can change the physical parameters of other diamagnetic metals and alloys.

Traditional methods of testing gold for authenticity

Changing the properties of metals is practiced only in the scientific community, but in jewelry it is customary to use real raw materials, which are tested using classical methods. When a product is exposed to a magnet, the result should be negative, i.e. the metal will not be magnetic. If the jewelry reacts even slightly to the magnetic field, it means that this is a fake or the amount of gold in the alloy is negligible.

As you can see, you can check whether the gold in front of you is real or fake in a fairly simple way, but not always. If unscrupulous manufacturers use aluminum or copper for manufacturing, the product will not respond to a magnet. In this case, you need to contact a specialist and conduct an examination.

Source: https://1nerudnyi.ru/mozhet-li-zoloto-magnititsya-10/

Search magnet for gold and silver: review of models and prices, general principles of searching for precious metals using this device - Eco Life

We are glad to welcome you to our website, dear guests. Today we will talk about whether there is a search magnet for gold and silver, the principle of operation of the magnet, useful properties and methods of application. We will review the models and suggest a way to build such a device yourself. Stay, it will be interesting.

The meaning and features of gold magnetization

Gold is a special metal because it has unique properties. Thus, it is resistant to oxidation processes and acids. Also, the metal has a high density, but at the same time it is very ductile. Many people wonder whether gold is magnetic, since there is information that it does not tend to be attracted to a body that has its own magnetic field.

What does magnetization mean?

It’s easy to imagine the surprise of a person who decided to test his jewelry in this way and discovered that it was sticking to a magnet. What does this phenomenon indicate?

If a bracelet, earring, or ring sticks, it means that they have a component that can be affected by a magnetic field. Therefore, if gold has a purity of 585 or higher, but it has not passed a home test for authenticity, then it is 100% likely that it is just a fake containing iron, steel, cobalt, etc.

It may also be that the fake is almost 100% copper, which is weakly, but still, magnetic. Often, fakes are made from copper, and to make them look like gold they are covered with a layer of gilding.

In addition, such chains, rings and earrings may also have a hallmark, but upon inspection it turns out that the “jewel” is actually costume jewelry.

The most popular alloys from which counterfeit jewelry is made are:

• aluminum bronze: 90% copper, 10% aluminum;
• bartbronze: bronze - 50%, tin - 50%;
• goldin: a combination of copper and aluminum;
• platinum: the main part of the alloy is copper, and the rest is platinum, silver, nickel and zinc.

If a product sticks to a magnet, you should contact a professional to determine its authenticity. Using reagents and special equipment, a specialist will check the product in a matter of minutes and form an assessment of its authenticity. As for home methods for checking rings, bracelets, pendants and chains, none of them can guarantee one hundred percent reliability of the results obtained.

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Source: https://DedPodaril.com/zoloto/imform/magnititsya-li-zoloto.html

Types and uses of search magnets for gold and silver – Glitter Gem

Many companies offer to buy a search magnet for gold and silver. Every person at least once in his life dreamed of finding a treasure. We need to figure out whether it is possible to attract precious metals to a regular magnet?

Search magnets

To lift ferromagnetic metals and alloys from the bottom of rivers, ponds and wells, magnets F 200 – F 400 are used (depending on the difficulty of access and the size of the load).

Even if they are the same size, the tearing force can be different, it depends on the content of neodymium (a chemical element). The more neodymium, the more powerful the magnet. For one person, a model with a diameter of up to 1 m and a lifting force of up to 300 kg will be optimal.

It is important to know that flat objects attract better than round ones.

Safety precautions or what to be careful with

When using a magnet, you must adhere to certain rules:

1. Neodymium should not be heated above 80°C.
2. The magnet affects the magnetic fields of electrical devices, pacemakers, watches, credit cards.
3. The large device is stored and transported in a non-magnetic, for example, plastic container.
4. You cannot stand between a large magnet and an iron barrel/door, etc., it will be attracted, and a fracture of an arm/leg or other part of the body may occur.
5. Wipe the device after each use, clean it from dirt, do not leave it without a case, and it will serve you for many years, since the device does not break down and does not require repair!

Have an easy search, precious finds and more gold!

Source: https://kabirski-store.ru/osobennosti/vidy-i-primenenie-poiskovogo-magnita-dlya-zolota-i-serebra.html