Search magnet

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 can you find with a search magnet? Cop Secrets

First of all, these will be objects made of iron and cast iron. The water hides many historical monuments in its depths. Most often, weapons are raised from the bottom of reservoirs. Using a search magnet, you can easily pull out hidden treasures in wells and garbage pits, if they were placed in a metal box for better preservation.

Search magnets have proven themselves best in searching for items and artifacts from the First and Second World Wars. With the help of neodymium search magnets, Cossack sabers were repeatedly pulled out from the Dnieper, and many artifacts were recovered from Lake Ladoga. Absolutely all products made of iron or containing ferromagnetic metals are attracted by a neodymium magnet.

Search magnet design

The design of the search magnet is very simple and practical. In the middle there is a very brittle alloy of rare earth metals, boron and iron, which is enclosed in a stainless steel or aluminum housing, or perhaps simply a nickel coating of the magnet.

All free space is filled with epoxy resin, which is why it is not recommended to heat it above 60 degrees. A repair bolt is screwed into the magnet from above or on the side to attach a rope or cable. When attaching the repair bolt vertically, it is easier to tear the magnet off the surface.

Simply screw in this bolt using a lever, and the pin itself will tear the magnet off the surface.

Attention! When heated above 80 degrees, a neodymium magnet loses its properties.

Gold

First of all, all search engines are interested in gold. I’ll say right away: pure gold is not magnetic to a search magnet ! However, most jewelry has a ligature added to it. Alloys are metals that are added to gold to increase strength and resistance to mechanical and temperature influences.

For example, in the well-known 585 standard gold there is only 58.5% pure gold, and the rest - 41.5% - are other metals, one of which is nickel. It is precisely due to the nickel content that jewelry “clings” to a magnet. But you shouldn’t hope too much for this, since the nickel content is very small and jewelry is not strongly attracted to a neodymium magnet. To do this, you need to touch the magnetic surface directly to the jewelry.

Silver

The second important search metal is silver. Silver also has two varieties: which is magnetic and which is not magnetic))

It is worth noting that some antique silver services and sets of cutlery were sometimes made from silver, which is taken with a magnet (with the addition of a ligature).

Stainless steel

Stainless steel, depending on its alloys and impurities, is magnetic to varying degrees. There are only a few of its species that have very little contact. The rest of the part sticks quite well for the reason that it contains from 12 to 20% chromium. Not magnetic at all:

● Aluminum ● Brass and bronze ● Tin ● Lead

● Copper

Important! Neodymium search magnets are very resistant to corrosion. Particular attention should be paid to the protective coating. If the coating is damaged, it should be immediately restored using epoxy resin or paint. If a magnet begins to oxidize, its characteristics can drop by more than 10 times, that is, from 600 kg to 50!

We figured out what metals are attracted by a search magnet. However, we should not forget that during the Second World War, German soldiers always carried a sealed metal cylinder with them in which they kept their most valuable things. It is these cylinders that can be found with a search magnet.

Search magnets are divided into three groups according to their capabilities:

1. One-sided. Perfect for vertical search (from piers, bridges and boats).

2. Double-sided. Universal search magnets. Great for almost any conditions. The fact is that when moving a magnet along a silted bottom, a one-sided magnet with an unknown side goes along the bottom, but a double-sided one will capture objects from both the upper and lower planes.

3. Trawl magnets.
They are most suitable for guiding along the bottom. But you should take into account the fact that a magnet weighing over 1.5 kg will be difficult to carry around on an inflatable rubber boat using oars. Important! With strong impacts and slight deformations, magnets lose their properties. When identical magnets are connected, their attractive power does not double, as we would like, but only increases by 30%.

Advantages and Disadvantages of Very Powerful Search Magnets

Powerful (especially double-sided) magnets for searching, as is already clear from the above material, are much more interesting for searching. Their main advantage is power. Getting a more valuable find (especially if we talk about precious metals that are magnetic) with its help is much higher.

However, powerful magnets have their drawbacks :

1. A very powerful magnet (500 kg or more) will be difficult to throw over a long distance, since it weighs more than 4 kilograms.

2. The breaking load with high-quality engagement is much greater than the physical capabilities of a person.

3. The quality of the rope must be high and have a 2-fold safety margin. This is necessary in order to be able to pull out a snagged search magnet from a flooded tree or crevice.

4. Carrying a heavy object for a long time is very tiring.

According to the type of fastening, repair bolts are divided into two types: with vertical fastening and lateral fastening.
For moderate results, a double-sided magnet with an attractive force of 140-200 kg and a lateral fastening of a repair bolt is sufficient. It is quite possible to carry such a magnet all day, although it is possible that the next day you will feel a slight pain in your muscles (without special preparation).

Using search magnets when searching with a metal detector

Many people use metal detectors, but less than half use a pinpointer. Everyone is familiar with the situation when there is a clear signal from the excavated soil, but the target is not visible. You can even move a pinpointer along the ground, hear the target, and find nothing. A neodymium magnet for searching is a great help here: if the target is magnetic, it will instantly stick to the surface. For such cases, using a magnet of 40-80 kg is sufficient.

Attention! It is very convenient to use a fabric bag. Metal debris, of which there is a lot in the ground, does not stick to the magnet. The fabric will also save you from mechanical damage and eliminate the possibility of dangerous corrosion.

Clear advantages of neodymium magnets compared to a pinpointer:

1. Their batteries don’t run out, and you don’t forget to turn them off all the time 2. Quiet (in cases where you don’t want to advertise your presence) 3. Small dimensions. Convenient transportation. You can simply carry it in your pocket. 4. The target itself clings to the surface. 5. Price. You can buy 5 magnets for the price of one pinpointer. 6. Resistance to mechanical damage and moisture.

7. Long service life if basic rules are observed.

Important! Neodymium search magnets lose magnetization approximately 0.1% to 2% per 10 years! Then it’s up to you to decide which search magnet to choose; we can only recommend a proven brand that does not deceive with the declared power - “World of Magnets” (see the brand in the description of the magnet).

Search for valuable coins

The list of coins that can be found using a search magnet is quite impressive. Cheap royal change is not accepted for magnetism, but medium denomination coins were made with the addition of nickel and chromium, which immediately indicates the magnetic properties of these coins. The most expensive large denomination coins, made of gold and silver, cannot be lifted using a search magnet; they interact with the magnet, but very, very weakly.

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

To do this, you need to place a neodymium magnet at an angle of 45 degrees, attach the original coin (which you are completely confident in) to its surface and release it. At the same time, it should smoothly go down. The fake, unlike the original, will go down very quickly. This applies to almost all coins that are not picked up by a magnet.

Important! When checking, it is better to use cellophane or polyethylene to cover the magnet, because coins in exceptional collectible condition have a chance of being damaged.

Purchasing a neodymium magnet is a good investment

The main problem with search magnets is the price, which has skyrocketed since 2009: 95% of rare earth metals are extracted and processed in the Middle Kingdom, and they are used for automotive production. This country has introduced additional duties on the export of magnets from its territory. Throughout 2011, neodymium increased in price 5 times! Neodymium on exchanges has risen in price by no less than 50% in just 2017!

Source: https://md-arena.com/chto-mozhno-najti-poiskovym-magnitom-sekrety-kopa/

Disadvantages of search magnets

Search magnets have become a part of human life. With their help, they clean agricultural crops, search for drowned and lost metal objects, and even search for meteorites that have fallen to the surface of the planet. The scope of application is really wide, but are these amazing helpers really that good? Are there any pitfalls in using them? In fact, they exist, and the shortcomings are quite obvious. Of course, these are not exactly disadvantages; rather, these are features of their functioning.

Why does adhesion force decrease?

By purchasing a neodymium magnet, we receive information about its adhesive strength. Let's imagine that a magnet is a round disk of a certain diameter and a certain thickness. When you bring it to a perfectly flat metal surface, you will notice how it is forcefully attracted to it.

In order to tear a magnet from the metal, you will need to apply a certain force. At the same time, the greater the adhesion force, the greater the force that will have to be applied to break it off. In some cases, this may require auxiliary tools to pry off the lower edge of the magnet.

After the magnet is torn off, it is necessary to take iron with a large amount of rust built up - the magnet will be attracted to such a surface, but it will be much easier to tear it off. Similarly, the adhesion force is affected by the surface condition of the metal sheet.

If there are roughness and dents on it, the adhesion force will noticeably drop. You can verify this by bringing a magnet to the edge of any metal object - tearing it off will be as easy as shelling pears.

What interferes with magnets at the bottom of reservoirs?

In order to imagine what a search magnet experiences under real operating conditions, you should look at the bottom of a reservoir, armed with a diving suit. Here you can find metal objects covered with many years of rust and covered with silt. Naturally, in such conditions the magnet will not work at full strength. Most likely, the adhesion force will drop below one hundred kilograms.

It’s a completely different matter if you are looking for a recently drowned object that has not yet become covered with silt, sand and rust - it is quite easy to pull out such a find. As for objects that have lain at the bottom for several decades, the magnet can easily fall off them.

The adhesion force will also become less if the object is under a layer of sand - in order to pull the find out of there you will need a very powerful magnet.

Why are powerful magnets dangerous?

Due to the above reasons, search magnets have another drawback. It is expressed in the fact that an object raised to the surface may unexpectedly fall off. If the find was rusty, then when it hits the bottom it may completely collapse.

Thus, the power of neodymium magnets becomes useless where it is necessary to pull to the surface any valuable object of interest for further research. When conducting search operations in mountain crevices, a magnet can be damaged by a strong blow - as a result, it can become demagnetized.

In addition, the magnetic field itself, which strongly attracts the magnet to the iron, can also be a disadvantage. As a result of such exposure, valuable finds that require careful handling may be destroyed and irretrievably lost.

Also, the magnetic field can play a fatal role if a mine or aerial bomb from the Great Patriotic War is found on the surveyed area of ​​the river or lake bottom. The force of gravity can push the magnet and metal together so strongly that the detected projectile explodes, severely injuring searchers. As a result, it is impossible to work with powerful neodymium magnets without the appropriate knowledge.

Source: https://sait-sovetov.net/stati-tehnika/nedostatki-poiskovyh-magnitov-908.php

What is a search magnet and what is it for?

Magnetism has long been studied by man; this useful quality of magnets has found wide application in various fields of activity. However, only due to the rapid pace of technological progress, magnets have recently become available to the general public.

Thus, innovative developments have given rise to a new form of the alloy - a neodymium magnet or search magnet, which has almost completely replaced the usual ferrimagnetic material.

A new type of magnets is widespread and successfully used in everyday life, in the electrical field, and in medicine.

A search magnet is most often a round object with a steel body, inside of which a neodymium core of one or another power is hidden; it is worth noting that the price of a search magnet will depend on this. On one of the planes of the body there is a strong ring-shaped mount called an eyebolt. Fastening is also necessary to separate a powerful magnet from a metal object it detects; to do this, you need to screw the bolt harder into the structure.

How to use a search magnet?

Many metal detectors, archaeologists, and searchers for historical artifacts dream of buying a search magnet, since it has an undeniable number of positive qualities. Using such a device, you can search for metal objects not only on the ground, be it soil, clay, sand or grass, but also in bodies of water of any depth, from small rivers to deep-sea lakes.

Security measures

You should know that when using a search magnet you need to follow a number of safety precautions:

1. The magnet can be carried exclusively by the earring mount or in a special bag. This way, you will prevent accidental magnetization to metal objects, for example, a car body or an iron garage door. This is not just a warning; it is worth understanding that such a magnet is extremely difficult to detach from flat surfaces of a large area, and therefore the surface can be damaged.
2. Under no circumstances should you keep your fingers in the space between the working magnetic surface and a metal object to prevent injury.
3. Any objects with electromagnetic properties, be it electronic or even quartz watches, telephones, plastic bank cards, should be kept at a distance of at least 30 centimeters.
4. The search magnet can be operated at temperatures up to 80 degrees, so avoid overheating. Otherwise, the magnet will lose its main quality - magnetization to metal.

Source: http://spokoino.ru/articles/other/chto_takoe_poiskovyj_magnit_i_dlya_chego_on_nuzhen/

How to choose a search magnet - TOP tips for treasure hunters

After reading this article, you will learn the main advantages of search magnets in comparison with pinpointers, familiarize yourself with the rules for using neodymium search magnets and make sure that buying a search magnet is a profitable investment. Extraordinary places to search will also be indicated. A search magnet, even if not very powerful, is an indispensable thing for a treasure hunter.

Every day a popular hobby is gaining momentum - searching for antiquities using a metal detector. Beginners are afraid to invest normal money in purchasing quality equipment. But based on my experience, I would like to note that only by investing money in quality things you get the expected result.

Today there will be no long and tedious stories about all the benefits of quality attributes.

Now I want to talk about search magnets, because by investing in a good magnet, you get two necessary search tools at once: a device for detecting and quickly removing any metal debris and a device for lifting metal products from the bottom of reservoirs. And there are a lot of relics hidden in the water.

How to choose a search magnet?

When purchasing a search magnet, you should first decide on its purpose. If you need it for searching on land or vertical searching at the bottom of a reservoir or exploring the bottom of old wells, then it would be the best solution to purchase a one-sided magnet, that is, with one magnetic surface. This magnet is cheaper. But if you decide to purchase a universal tool, then you should buy a double-sided magnet with a side eye bolt.

I will not list the obvious advantages of this product, but I will say that with the use of such a device, the number of finds increases significantly.

This is primarily due to the fact that when moving horizontally along the bottom of the reservoir under study, the magnet goes to a certain depth into the mud with the lower surface, and with the upper surface it collects all metal objects from the clogged bottom. This is a very important factor, since a magnet can attract small metal particles from a distance of no more than 15 cm.

So it’s clear: it’s better to buy a double-sided neodymium magnet. If you are planning to approach the purchase seriously, I advise you to familiarize yourself with the assortment of search magnets in the Mir Magnitov store - the largest niche store in the Russian Federation.

Places to find relics

The best places with the largest number of valuable finds are old bridges and military crossings. Good results are obtained from studies of mill whirlpools and pre-revolutionary wells.

Sometimes even studies of drains and garbage pits and station toilets yield impressive results! After all, search magnets even magnetize jewelry containing a ligature.

And what has never happened before: some thief, escaping from law enforcement agencies on a train, jumped out at the station and got rid of direct evidence by throwing it into the toilet - no one will swim there and look for it.

How to use a search magnet correctly

When buying a magnet with a high attractive force, which is written on the magnet in numbers after the letter F (this is the tearing load in kilograms), you should not worry about the possibility of being left without a magnet if it sticks well to the smooth surface of thick metal.

For these cases, there is an eye bolt, by screwing it into the body of the magnet you will gradually tear it away from the surface.

If the load is very large, as a rule, such cases occur with units with a power of 400 kg or more, you can use a lever to turn the eye bolt.

Don’t worry if a car suddenly ends up at the bottom, because its body is made of thin metal, and the magnet won’t stick to it too much. But you should definitely choose a climbing cord with a three-fold safety margin in case of snags.

A promising investment and some tips

Investing in a search magnet is a promising business, since the rare earth metals that make up its composition are only growing in price every year.

A neodymium magnet demagnetizes very slowly. On average, about 1% per year, provided the integrity of the case. Monitor the condition of the magnet coating and under no circumstances heat it above 80 degrees.

It is very convenient to use instead of a pinpointer: the batteries do not run out, and there is no unnecessary noise. It is better to use it when searching with a metal detector, storing it in a fabric bag. With the help of a bag, it will not become clogged and will be less susceptible to mechanical damage.

Neodymium magnets are very fragile and when chipped or broken they lose a lot of power.

People using pacemakers should handle them very carefully.

A very useful thing in everyday life, since you can always very quickly find a small metal object and filter liquids from chips.

             >

                                                          section page >>>

Source: http://donovedenie.ru/blog/kak_vybrat_poiskovyj_magnit_top_sovetov_kladoiskatelju/2018-05-12-767

Search magnet: what is it and how to use it?

To answer the question of how to use a search magnet and do it correctly, it is important to correctly assess the specifics of the materials from which this product is made. It is based on a rare-earth supermagnet based on a neodymium-iron-boron alloy.

This compact product can attract and securely hold metal objects whose weight is tens of times greater than its own mass. Thanks to their high power, search magnets successfully lift objects of impressive size from the bottom of wells, lakes and rivers.

They can be used to quickly and easily check large littered areas for metal objects (including scrap metal). 

Limitations when using search magnets

In order for a search magnet to serve you for as long as possible and allow you to discover many interesting finds, you should remember its weaknesses:    

 1) High temperatures. Neodymium alloy is extremely susceptible to high temperatures. Use at +80⁰C is almost guaranteed to lead to loss of its magnetic properties. The optimal temperature for using the product is –50..+50⁰C.      

2) Moisture. The galvanized body of the search magnet reliably protects the neodymium alloy. The shell may cease to cope with its main function if there is serious damage, which can be caused, among other things, by poor cleaning of rust after using the product. The unprotected powder base of a neodymium magnet rusts in normal humidity, so the integrity of the body is a prerequisite for long and reliable service of the product.

Basic precautions when using search magnets

To ensure that working with a search magnet brings only positive emotions and impressions, you must remember to follow basic safety measures:    

1. Protective gloves. During search operations, small sharp fragments of iron and rust are inevitably found at the bottom of reservoirs or in littered areas. Be careful when cleaning the surface of the product. Thick protective gloves are a must.      
2. Take care of your fingers. The attractive force of the most powerful models of search magnets reaches 600-800 kg. Never allow parts of your body to come between a heavy metal object and the working surface of the product.    
3. Use the magnet correctly. To lift the product from a large object, do not forget to use an eye bolt. When working, always hold the search magnet strictly by the mount.

Properties and advantages of magnets for searching for gold and silver

Many adventurers want to find precious metals in the ground rather than buy them. The idea is not without meaning, since in the past people often hid all their most valuable things in the ground, and now real treasures are sometimes found in their summer cottages. A search magnet for gold and silver will help facilitate the search procedure. Having purchased such a magnet, you can tie it to your equipment using a repair bolt or rope.

Search magnet

What can you find with a magnet?

Gold and silver are very difficult to find using a magnet. A search magnet searches in the ground only for ferromagnets, i.e. those metals that have the property of being attracted to a magnet. Among them:

• copper;
• aluminum;
• brass;
• silver;
• gold;
• turquoise, precious stones;
• tin;
• lead.

Their opposites are diamagnetic materials. Of course, pure gold and silver cannot be found using a magnet, since these metals do not react to it. But often the device helps to detect precious jewelry. And all because a ligature is added to their composition.

A ligature is a metal or an alloy of metals that is included in jewelry to give it strength or certain properties. A product with the addition of a ligature has its own sample. Fineness is the amount of pure precious metal in a product, expressed as a percentage.

The most popular standard is 585; rings with cubic zirconia and other precious stones, chains, and bracelets are made from it. The purity of such products is measured in some countries not by sample size, but by carat.

To convert carats to grams, you need to know that one carat equals 200 milligrams.

For example, a ring often contains nickel. Of course, this metal is not the best for use in jewelry, but it helps reduce the price of jewelry. It is to nickel that the magnet will react. It is advantageous to look for metals at the bottom of rivers or other bodies of water, since they are on the surface. For such purposes the following were developed:

• double-sided magnet;
• magnet trawl;
• one-sided magnet.

Operating principle

All devices have their advantages and disadvantages. A trawling magnet is suitable for large areas, and a single-sided magnet is suitable for limited metal searches nearby, a cubic zirconia ring can be found with just such a device. In addition, the magnet corrodes over time, and the force of attraction decreases. But manufacturers thought about this situation and began to cover search magnets with a layer of aluminum, zinc or other polymer.

The strength of the magnet is determined in gauss; a steel plate and a dynamometer are used for the procedure. But the indicator itself is approximate. If you combine several magnets, their field will increase, but not twice, but by 30%. A regular magnet has both poles of equal strength.

Neodymium magnet is considered the strongest. But even it has limitations in terms of magnetic properties. For example, temperature conditions. The device cannot withstand more than 80 degrees Celsius; if used in this mode, it loses power.

How does a search magnet work?

Among the finds using a magnet you can find:

• scrap metal - it is for these purposes that magnets are most often used;
• low-grade jewelry with admixtures of ferromagnetic materials, among them there may be items made of turquoise or with the addition of other stones;
• metal devices.

Magnets are absolutely “indifferent” to stones. Because gemstones are crystals and are not magnetic. And jewelry, in general, will not affect the magnet. Therefore, if you want to find a worthwhile decoration, you either need to spend a lot of time or know the places where they are hidden.

Therefore, the price of a magnet is more expensive than a ring with cubic zirconia, turquoise, and other budget jewelry. Before purchasing a device, think about the purpose for which you are buying it. Then go to stores and compare the cost of the magnet with the price of the finished product. To assess the profitability of searching for metals, it would be useful to find out the prices for purchasing scrap metal, and then calculate your finds in grams and find out when the cost of the magnet will pay off.

We recommend other articles

Source: https://DedPodaril.com/interesno/poiskovyy-magnit-na-zoloto-i-serebro.html

Search magnets: reviews, review, characteristics

As reviews of search magnets show, these devices are becoming a very popular topic. Moreover, this applies not only to romantics and treasure hunters, but also to quite presentable and wealthy people. Some of them see an opportunity to make money, others are simply carried away by the process in the hope of finding a rare or unique item. This kind of “hunting” can be compared to fishing, in which people are also attracted by the intrigue of expecting an unsurpassed catch.

Description

It is worth noting that search magnets, reviews of which are presented in the article, come in two varieties: single-sided and double-sided. They differ from each other in the number of working edges. In the first case, to fix the element, a standard fastening is used in the form of an eye bolt, screwed into the central part of the plane in the non-working area. The second option is to weld the rope clamp to the body.

In double-sided devices, the fastening bolts can be screwed into the “edge” (side surface). This modification definitely has advantages; therefore, its cost is higher. The single-sided version can only be used for vertical lowering.

The optimal areas for work are from a bridge, a boat or in old wells. Many searchers throw the tool from the shoreline, and only the double-sided version is suitable for this purpose. The working washer falls face down to the bottom, after which the device is guided along the bottom using a cable.

A model with one active side is ineffective with this method of operation.

Double-sided search magnets became widely available not so long ago, and their prices have dropped significantly. The introduction of innovative technologies has made it possible to reduce the cost of the production process of elements. Since devices differ in size, cost and attraction efficiency, it is not so easy for a beginner to choose a suitable model, taking into account the features of its further use.

As already indicated, magnets are divided into two types of execution. When choosing a search analogue, you should take into account several more nuances and characteristics.

Regardless of the region of study and the final goal, reviews of search magnets indicate that they must have an attraction of at least 100 kilograms. It's not as much as it might seem.

The fact is that a device designed for 100 kg is capable of holding the specified weight under ideal conditions. For example, lifting a smooth metal part strictly vertically upward.

Peculiarities

If during operation you slightly change the angle of application of force, the device moves off the surface. Thus, even a 400 kg search magnet is capable of dragging no more than half of the calculated mass along the bottom. Considering that there is a lot of algae, sand and other foreign objects at the bottom of the reservoir, the unit can actually be pulled out 10 times less in weight.

You also need to remember the intensity and strength of the current. When the object comes off the bottom, it vibrates and breaks off if the water pressure is strong enough. In this regard, experts recommend using devices with a force of 200–400 kg to search for metal “artifacts.”

If a magnet is used to search for scrap metal, regardless of its historical value, the tool force must be at least 600 kg.

Although such a unit itself weighs more than a kilogram, it is capable of “fishing out” mountains of scrap metal, including the remains of vehicles and aircraft.

Accessories

Those who decide to mine certain finds will need to equip the search magnet with a special cable. You should not save in this direction, because the specified equipment will not cost much, and the loss of even a budget modification will not cause pleasant emotions.

As a rule, climbing ropes and their analogues are used as rope. Such devices are protected from abrasion and have a strong middle core, which prevents the rope from breaking at the most inopportune moment.

The length of the rope is chosen according to personal preference; usually it does not exceed 20 meters.

It is unlikely that it will be possible to physically throw a fairly heavy blank, even for a well-trained person. You will also need to purchase gloves made of durable material, since it is easy to get injured on elements of equipment and the findings. In addition, a special bag for the “catch” will not hurt.

Metal products lifted from the bottom are often corroded by rust, covered with algae, and have a rather unpleasant odor. In this regard, transporting them in a bag or a regular backpack is impractical.

Another point worth paying attention to is tying the rope with a simple but reliable knot.

Maintenance and care

A high-quality double-sided search magnet does not require special care. The materials used to manufacture such a device are alloys of iron, boron, neodymium with a stainless coating. It is housed in a housing with anti-corrosion coating. The essence of care is wiping the element with a dry rag, clearing it of metal shavings that collect in hard-to-reach places, of which there are not many.

The device itself is durable and reliable. The loss of power parameter is no more than one percent in 10 years. The magnet must not be subjected to shock or thermal heating.

For example, 80 degrees is enough to completely neutralize the properties of the tool, after which it turns into an ordinary blank.

If searches are accompanied by video recordings, it should be taken into account that magnetic waves negatively affect all electronic devices, including mobile phones and tablets. After each use, it is necessary to check the integrity of the rope and the reliability of the knot.

What and where do they find it?

Reviews of search magnets clearly state that precious and non-ferrous metals cannot be found with its help, since they are not magnetic. Consequently, only iron and some alloys can be found. Often, “pathfinders” find keys, locks, coins, knives and other “trifles.” Among antiques, horseshoes, ancient tools, and forged items are most valued.

Search engines often come across ammunition and weapons, both from the Second World War and the dashing 90s. It’s better not to mess around with such “belongings” by returning them or calling the appropriate special services.

Regardless of the purpose of the search (scrap metal, artifacts, or all together), the best “catch” will be in crowded areas. It turns out that good places include pedestrian and automobile bridges. Most often, this is where citizens lose or deliberately throw away valuables and other items.

In the area of ​​ancient crossings, the likelihood of finding valuables is higher than near modern structures.

Search magnet “Supersila”

Devices under this brand are produced by the Moscow NPK Supersystem. The assortment includes options that differ in operating principle, material of manufacture, and load capacity.

One of the most popular modifications is the F-300 version. The design includes a neodymium working part and a steel frame. The body is equipped with a threaded through hole, which serves for convenient pressing of the element from the iron surface through an eye bolt, which is included in the kit along with the nut.

Search magnets "Supersila" are designed to identify and lift steel objects from reservoirs, caves, wells, and excavations. Judging by the reviews, this design is suitable for searching for scrap metal. The lifting force under optimal conditions is several hundred kilograms. The device in question pays for itself in several trips, even if you only search for ferrous metal. The F-300 model is capable of holding up to 420 kilograms, the body coating is zinc, the weight of the device is 1.9 kg.

These devices are popular with tens of thousands of search engines in many countries. The advantages of the unit include the compliance of the specified power with the declared characteristics, unlike most Chinese analogues. The design of the best search magnets is standard:

• metal body in the form of a bowl;
• working part made of neodymium;
• eye bolt with nut.

The introduction of iron and boron impurities makes it possible to enhance the properties of the unit and give it additional strength. The working element is securely mounted in a steel cup using epoxy resin, and the protective anti-corrosion coating is zinc-coated.

A mandatory structural part includes an eye bolt, oriented to separate the magnet from the metal object. In addition, the specified screw serves to secure the cable. The part is mounted in a special through hole.

The purpose of one- and two-sided search magnets “Triton”:

• protection of wells and reservoirs from iron-containing inclusions;
• search for archaeological, historical and valuable artifacts;
• checking sand or soil for the presence of metal objects;
• scrap metal sorting;
• search for lost objects on beaches and in reservoirs.

Magnets from the Nepra company

The Nepra company has been producing various search equipment since 2009. The profile direction is search single- and double-sided magnets and related equipment. Single elements have a simple design and are optimally suited for work in mines, wells and swamps. Versions with two working edges are designed for manipulation from a boat and the coastal zone of various bodies of water.

The table below shows the comparative parameters of some types of Nepra search magnets.

Name	Type	Adhesion force, kg	Weight, kg	Magnet material	Operating temperature, °C	Diameter, mm	Dimensions, mm
2F-600	Double sided	600	3,3	NdFeb	Up to +60	125	160/145/125
2F-120	—	120	0,6	—	—	67	85/85/120
2F-300	—	300	1,6	—	—	95	135/120/125
2F-400	—	400	2,0	—	—	105	135/120/125
F-80	Unilateral	80	0,2	—	—	48	85/85/120
F-200	—	200	0,57	—	—	75	85/85/120
F-600	—	600	2,28	nickel	—	125	160/145/125

Safety

Since a double-sided search magnet belongs to the category of high-risk tools, certain rules must be followed during its operation and storage:

1. It is forbidden to place fingers or other body parts between the metal and the magnet. This can lead to soft tissue injury.
2. To avoid damage to electronic devices (watches, phones and other gadgets), you should keep them at a distance of at least 250 millimeters from the working device.
3. When heated above 80 degrees, the unit completely loses its properties.
4. The magnet is transported in wooden boxes with a wall thickness of 10 mm on the sides and 20 mm on the bottom.
5. The natural loss of performance is 1–3 percent over 10 years.
6. The device is stored in a special case or packaging with thickened walls and a bottom covered with foam, rubber, and boards.

Price

Many consumers are interested in the question, how much does a search magnet cost? Its price depends on the model configuration, equipment and manufacturer. A two-section new device will cost from 2.5–3 thousand rubles.

Source: https://FB.ru/article/458300/magnityi-poiskovyie-otzyivyi-obzor-harakteristiki

Search Magnet | Treasure hunting from A to Z

» Devices for cops » Search magnet

November 04, 2015 at 10:00

Search magnet

The fields are still being plowed, so there is no need to talk about a full-fledged search with a metal detector. Of course, you can walk around in the forest, but this is not exactly what the treasure hunter wants. After all, if you look at it, even searching in the forest, where there is not much grass, does not always promise to find at least something. The thing is that a lot depends on the proximity of populated areas, old villages and other objects that are interesting from the point of view of a search engine.

Moreover, the finds will be found in the immediate vicinity of populated areas, and already at a distance from the village, for example, 1-2 kilometers deep into the forest, the device may be silent, and sometimes you even get the feeling that it is broken, you have to double-check its functionality with a shovel, holding it over the coil. Just for fun, try to climb into the thicket of the forest, about 5 kilometers from the village, and look there. I think the result will not be very good.

Checking the functionality of the metal detector with a shovel

Read on "E-KLAD": Equipment for a treasure hunter

Where can you use a search magnet?

a search magnet for a while . In fact, from the name it is already clear what the point is - to look for metal objects that tend to be magnetized using a neodymium magnet for searching.

Search magnets are used in bodies of water

Moreover, the search itself, in 99% of cases, is carried out in the aquatic environment: rivers, lakes, ponds, wells. It may seem to some that this type of search is not particularly interesting, since what could be interesting in ordinary pieces of hardware?

Read on “E-KLAD”: Wireless headphones for cops “Piton-whmd-02”

What can you find with a search magnet?

But it turns out that there are quite a lot of interesting objects made from ordinary metal that are pleasing to the eye. You will be surprised when, after throwing a magnet into an old village pond, horseshoes, gardening tools, some kitchen utensils, and a host of other items will be pulled ashore.

You can lift a horseshoe from a village pond

If you throw such a magnet on rivers, you can add to your collection of fishing tackle. Knives, nails, axes, and other tools are often found. Of course, there is plenty of garbage too. But the activity is so exciting that it completely addicts you. We considered searching using a magnet as a hobby.

On the rivers you can collect a collection of fishing gear

On the other hand, it is by working with a search magnet that you can earn extra money. Everything is simple here: there is so much scrap metal in some rivers that the question arises of how to remove it and how to transport it. You can’t earn millions, but a few thousand rubles with a serious approach is quite possible. Plus, you will make the river section itself cleaner, so to speak, with one more good deed in your piggy bank.

Or you can just collect scrap metal

Read on "E-KLAD": Mini radio station - a good device for a treasure hunter

Several characteristics of a search magnet

If we turn to the market of search magnets, we will notice that today there are several types of magnets that differ from each other in the degree of maximum tearing force and are equipped with an eye bolt, which makes it easier to unhook the magnet from the metal surface. The bolts can be attached to the magnet on one side or on the side.

Large selection of search magnets

The magnets themselves are single-sided and double-sided; they do not rust from constant contact with water. In addition to having a hobby and making money from raised scrap metal, you can use magnets to clean wells into which buckets, chains and other metal objects accidentally fall. If you help the locals retrieve a fallen bucket, they will remember you for a long time and will always be happy to see you, keep this in mind.

Single-sided and double-sided magnets available

When working with a search magnet, you need to follow safety precautions, since if your finger gets between the surface of the magnet and the iron, injury cannot be avoided - the magnetization force is such that crushing tissue is guaranteed, so you need to have a first aid kit with you (if you decide to search using a magnet). mandatory.

But you should always remember about safety precautions

In the next article I’ll tell you how to tie a magnet, which rope is better to take so as not to make a mistake.

Read on "E-KLAD": GPR navigator Garmin: the right device for a treasure hunter

Your Alexander Maksimchuk!
The best reward for me as an author is your like on social networks (tell your friends about this article), also subscribe to my new articles (just enter your email address in the form below and you will be the first to read them)! Don’t forget to comment on the materials, and also ask any questions you have about treasure hunting! I am always open to communication and try to answer all your questions, requests and comments! Feedback on our website works stably - don’t be shy!

Source: http://e-klad.com/devajsy-dlya-kopa/poiskovyiy-magnit.html

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

Which search magnet is better to buy?

Neodymium search magnets today are actively used by treasure hunters who are looking for valuable things. Depending on the type and type, the device can have different holding weights and can be used to search for small elements or large catches.

Most often it is needed to work in places where using a metal detector is difficult or even impossible. Can also be used together.

To get the maximum result from its use, it is important to first choose the right search magnet and then use it.

First of all, decide under what conditions and for what purposes the device will be used. As a rule, these are dried up wells or lakes or rivers. Powerful search magnets are best suited for this. The more powerful it is, the heavier objects it can withstand and the greater the chance that it will be magnetized to the find.

However, there are also disadvantages of very strong magnets: they are more dangerous and more difficult to tear off. The best option for searching at depth is considered to be models with a pull-off force of 400–600 kg. At the same time, you should be very careful when purchasing; sellers often significantly exaggerate the power of the magnets.

It is recommended to buy from well-known and trusted sellers, such as, for example, the “World of Magnets” search magnet store. Otherwise, you can easily get the wrong adhesion force for which you expected, for example, instead of 400 you get 300 kg.

Unfortunately, it is very difficult to prove that the magnet was of inadequate power immediately upon purchase, since it can be demagnetized if handled incorrectly.

The use of double-sided search magnets also significantly increases the chances of magnetization reversal to a find. They are recommended for use in rivers and lakes. With such a device, you will not miss a find because the magnet “looked” in the other direction.

For use with a metal detector, weaker one-sided models are most often suitable. They will be easier to use and their strength is usually enough to check a cop.

To use a search magnet correctly, you need to understand the characteristics of the materials from which it is made.
An alloy of neodymium, boron and iron can withstand a hundred times its own weight. Using the magnet is extremely simple. It is enough to bring the device close to a metal object, and it will work immediately. Depending on the area, finds can be valuable, large, and sometimes dangerous.

Rope

Decide under what conditions the device will be used. As a rule, these are dried up wells or lakes or rivers. First you need to pick up a special rope. When choosing, look at the breaking strength. This characteristic shows how much weight the cable is designed for.

The breaking force of the rope must be at least equal to or greater than the power of the magnet. For example, for a device with a nominal force of 200 kg, a cable with a similar weight limit is suitable. You can and even need to take more in some cases.

If you plan to use a pole, then its weight should be added to the rated strength of the magnet. Also, finds will often have to be pulled out of silt, algae or sand. Water creates stress on the object, so a thick rope is definitely needed.

It is recommended to take with reserve.

For searching at the bottom of reservoirs there are rubberized cables that do not deteriorate from the influence of a humid environment.

Pole

A separate interesting device that will be useful to treasure hunters operating in swampy areas. The magnet itself is lightweight, so it does not penetrate dense silt. The magnet is attached to the end of the pole, then lowered deeper. This way you can find ancient treasures hidden at the very bottom.

Rules for working with a magnet

When working with a magnet, the following troubles may arise:

• rope break;
• slipping of the device from the smooth surface of a large object;
• loss of the device itself due to unreliable fastening.

To ensure safe, high-quality and successful searches, it is necessary to pay attention to all these points and take measures to eliminate them. It is important not only to choose a rope, but also to secure the device correctly and use the correct casting technique.

Ways to bind a search magnet

There are several effective knots that are often used to tie a magnet for searching: nautical, academic, surgical, constrictor. The first is the most popular, which is mainly used. The rest are often tied as additional ones, alternately, for greater strength. This way the magnet will never get lost.

Even this excellent device has its weaknesses. In total, such a magnet has 2 minuses. These shortcomings are easily solved, so they rarely become a reason to refuse a purchase.

• Heat. This alloy tolerates elevated temperatures extremely negatively. More than +80 is lethal for its unique properties. The most suitable mode varies from -50 to +50.
• High humidity. Most often, a magnet is used under water, in conditions of complete immersion. This does not affect the magnet itself, but at the same time the shell quickly corrodes. The problem can be solved by simply maintaining the device. After each use, you need to clean off any rust that has appeared and remove any remaining water. Do not store in a place with high humidity.

Basic Precautions

Be careful when handling neodymium search magnets. This is a powerful and serious device that disables equipment and causes injuries in a couple of seconds. The magnetic field easily deletes information from bank cards, hard drives, and breaks pacemakers.

Be sure to use additional hand protection. Since the devices develop a large magnetizing force, your hands may suffer. The two search engines have double the strength and easily crush the fingers between them.

Magnets can stick to metal items at high speeds, even through a pocket. If you carry it in your hands by the ring and walk past a metal structure, you can easily get a fracture of the phalanx.

The magnets are incredibly fragile, although they have a high power rating. If dropped or suddenly released for gluing, it may simply crack and lose its properties.

Use in difficult conditions

The most valuable and interesting finds are hidden in places inaccessible to humans. Search magnets are designed for use precisely in those places where a metal detector cannot reach. The magnet is lowered to a depth on a special rope. To do this, it is most practical to use a double-sided device with side mounting. It is thrown into the water like a drag, from a boat or from the shore.

The magnet works best at a distance of no more than 10 cm. This way, even the largest elements will be captured.
On sand or land, the catch literally flies out on its own. Underwater, among the silt, it will be a little more difficult. Therefore, you need to bring it closer and pull harder. If an object is stuck in the ground, it must be dug out manually. Large items are retrieved using a special automated winch. Coins, keys, badges, weapons are quite easy to pick up, it does not require special skills.

Features of transportation and storage

A strong magnetic field damages equipment and electronics. To minimize the possibility of damage, follow safety precautions during storage and transportation.

Source: http://3Monety.ru/blog/kakoj-poiskovyj-magnit-luchshe-pokupat/

Search magnet for gold and silver: how to magnetize metal

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?

Magnetic field and metals that conduct it

At the macroscopic level, under the influence of a magnetic field, some substances can be attracted. This also applies to metals and alloys. When hanging a new magnet on the refrigerator, many people don’t even think about why it doesn’t fall off.

The most attracted metal is iron, which is used in alloy with other metals in the production of refrigerators. Now try attaching a gold ring or chain to this magnet. In this case, the gold product will not hold up.

If you perform this trick with a silver item, you will get a similar result. Gold reacts worse to a search magnet than silver, since the latter contains more impurities.

The things that we used to call gold and silver are not actually made of mono-metal, they are alloys. They could “stick” to the magnet if it were larger, more powerful, if the alloy contained a pronounced metal that could be quickly attracted. To do this, consider the types of interaction of substances with a magnetic field.

Here are the main ones:

1. Ferromagnets – strongly attracted (for example, iron, steel, nickel);
2. Paramagnetic materials are weakly attracted (for example, platinum, aluminum, magnesium, oxygen). This effect can only be detected using special equipment.
3. Diamagnets - magnetized against the direction of the external magnetic field and repelled by the magnet (for example, plastics, gold, silver, copper, water, carbon).

Having bought an ordinary magnet, you will only attract ferromagnets; in this case, you will have to forget about a treasure of gold. If you are determined to look only for products made of gold and silver, it is better for you to purchase a metal detector. It works on a different principle: it does not attract metals, but makes sounds when searching for them. Then all you have to do is dig in the right place. Decide what to buy so as not to throw money away and not be disappointed with the purchase.

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://ToZoloto.ru/o-zolote/dobycha/poiskovyj-magnit-na-zoloto-i-serebro.html