How to cut a neodymium magnet at home
Types of protection
There are different types of magnetic shields. It can be:
- simple magnetic stickers;
- plastic sensors Alarm;
- flexible protection.
Magnetic stickers and tags
- metal strips;
It can be glued in places invisible to the buyer, or it can be on a branded label.
Will help remove the protection if paint capsules are installed in it:
From the video you will learn how to remove the protective clip with pliers:
Using a screwdriver, drill a hole in the convex part of the sensor, then remove the magnet mount.
How to remove the magnetic protection from clothes with a neodymium magnet, see this
What is needed
Making magnets with your own hands does not take much time and does not require special costs. This requires:
- oiled paper;
- copper wire;
- strongest permanent magnet.
Making a magnet at home
The man first got acquainted with the magnet in antiquity. However, very quickly, this natural stone ceased to meet the needs of people. It was then that the technology for making magnets was developed. Of course, a lot of time has passed since then. The technology has changed significantly, and now it is possible to make a magnet at home. You do not need to have special skills and knowledge for this. It is enough to have all the necessary materials and tools at hand. So, making a magnet looks like this.
Hard magnetic materials
Such materials are obtained by magnetizing an ordinary piece of iron. In this case, the properties are retained much longer. However, they completely disappear when the object hits a sufficiently hard surface. Also, the magnetic properties are destroyed if the material is heated to 60 degrees.
The manufacture of a magnet in this case involves the use of current from the mains. This method is quite dangerous, so all manipulations should be performed carefully and carefully. We need a fuse, without which nothing happens. It must be connected in series with an inductor coil, inside which there is a metal workpiece.
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Of course, when such a design is turned on, the fuse will burn out. However, in this short period of time, the metal workpiece will have time to charge, since in this case a sufficiently strong electromagnetic field is created. Here it is worth considering one nuance: the higher the current strength, the stronger the magnet will turn out. Only copper wire should be used for winding the coil.
Soft magnetic materials
All materials capable of magnetization can be divided into soft magnetic and hard magnetic. There is a significant difference between the two. So, magnetically soft materials retain their magnetic properties for a short time.
An experiment can be carried out: run several iron bars over a strong magnet. As a result, the material will acquire the properties of attracting other metal objects. However, the manufacture of a magnet that constantly possesses these abilities is impossible in this case.
The production of permanent magnets can be carried out in another way. This requires a battery. With its help, you can magnetize any material suitable for this. This is done quite simply and does not require special tools. An electromagnet gives magnetic properties to a metal object.
Let’s look at an example with a screwdriver. To begin with, the tool should be wrapped with an insulator, and then about 300 turns of wire should be wound. It is better to use the one used for the manufacture of transformers. After that, the wire must be connected to a battery or battery, preferably 5-12 volts. As a result of such manipulations, the electromagnetic field will magnetize the screwdriver.
This method is considered to be the simplest. It is enough to hold a magnetized object several times in one direction over a permanent strong magnet. That’s all. However, it should be taken into account that magnets made by this method do not hold the magnetic field for long and very quickly lose their properties. Such products are only suitable for simple manipulations. For example, such a magnet can help remove a stuck needle from a gap or pull bolts, but nothing more. Therefore, this method should not be considered seriously.
How to disconnect neodymium magnets at home?
Neodymium magnets are incredibly widespread today. It is worth recalling that this is the type of magnets that are the strongest in terms of magnetic forces and do not demagnetize over time.
On the website neodimovie-magniti.ru you can purchase neodymium magnets of any configuration. Affordable and the widest assortment will pleasantly surprise you. It is recommended to purchase the indicated product only from trusted suppliers.
Using disc magnets
Needless to say, disc magnets are one of the most commonly used forms for the production of magnets. The fact is that in this case their scope of application increases significantly.
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If we talk about the dangers of magnets to health, then it does not exist. Quite the opposite. On the network you can find sites that offer the treatment of gastrointestinal diseases using the magnetic field of a neodymium magnet.
However, this is also a lie. Any magnet is a very useful thing in everyday life. Examples include the following applications:
- holding curtains;
- attaching notes to the refrigerator;
- wall panel for knives (knives are held in place by magnets), etc.
It hardly needs to be said that the use of magnets to suspend or completely stop water, electricity or gas meters is a crime.
If the controller notices a residual magnetic field (and after a long stay of the magnet on the meter, the latter becomes magnetized), problems cannot be avoided.
What is required to separate the magnets?
Of course, if the magnets are small (like coins) they can be separated using the muscular strength of the arms. After all, the magnetic forces that pull both magnets together are very small in this case.
However, if the two magnets that “stuck together” are small washers (slightly smaller than a hockey one), then in this case one cannot do without the principles of a lever.
It is necessary to slide the magnets horizontally. This can be done using a door near any furniture: bedside table, table, sideboard, etc.
The magnets are installed in such a way that the lower one rests against the door, and the second one is tightly fixed with the help of your hand. Now all that remains to be done is open the door.
It is recommended to do this not abruptly, gradually increasing the force of impact on the magnets using the door.
The video will clearly demonstrate how to independently separate two large neodymium magnets in a domestic environment:
How to make a neodymium magnet at home
So, the devices we sell are composed of an alloy that is 70% iron and almost 30% boron. Only a fraction of a percent in its composition falls on the rare earth metal neodymium, natural deposits of which are extremely rare in nature. Most of them are in China, there are still only a few countries, including Russia.
Before making neodymium magnets, manufacturers create molds for them from sand. Then the tray with the molds is poured over with gas and subjected to heat treatment, due to which the sand hardens and retains the future shape of the metal blank on its surface. These forms will later be placed in red-hot metal, from which, in fact, the necessary products will be obtained.
Now let’s take a direct look at how a neodymium magnet is made. Unlike ferromagnetic products, the metal does not melt here, but is sintered from a powder mixture placed in an inert or vacuum environment. Then the resulting magnetoplast is pressed with a simultaneous exposure to an electromagnetic field of a certain intensity. As you can see, even at the initial stage of production, it is noticeable that the question of how to make neodymium magnets at home sounds inappropriate. Operations and equipment used are too complex. Creating a similar environment at home is hardly possible.
After the workpieces are taken out of the molds, they undergo mechanical processing. they are carefully polished, then they are fired to improve the coercive force of the products.
Finally, we come to the last steps, which will help to finally answer the question of how neodymium magnets are made. The sintered NdFeB alloy is again machined with a special tool. During operation, a cooling lubricant is used to prevent overheating or ignition of the powder.
A protective coating is applied to the magnets. This is due, firstly, to the fact that the sintered metals are quite brittle and must be strengthened, and, secondly, the metal will be protected from corrosion processes and other environmental influences. So manufacturers worry in advance about how to make a neodymium magnet stronger and more durable. The coating can be copper, nickel, zinc. In the last phase of the production process, magnetization is applied by means of a strong magnetic field. Further. they go to the warehouse, and from there to customers.
So, after we examined the production process in more or less detail, it became clear that, probably, one should not seriously ask the question “how to make a neodymium magnet at home”. After all, this requires not only the presence of certain knowledge, but many complex units.