Making a magnet at home
Man first met with a magnet inantiquities. However, very quickly this natural stone ceased to satisfy the needs of people. That's when the technology of 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. For this, you do not need to have special skills and knowledge. It is enough to have at hand all the necessary materials and tools. So, making a magnet looks like this.
Soft magnetic materials
All materials capable of magnetization can bedivided into soft magnetic and magnetically hard. Between them there is a significant difference. Thus, soft magnetic materials retain the magnetic properties for a short time.
You can conduct an experiment: spend several times on a strong magnet iron bars. As a result, the material will acquire properties to attract other metal objects. However, the manufacture of a magnet that constantly possesses these abilities is impossible in this case.
Similar materials are obtained as a result ofmagnetization of a common piece of iron. In this case, the properties are saved much longer. However, they completely disappear when the object strikes against a sufficiently hard surface. Also, the magnetic properties are destroyed if the material is heated to 60 degrees.
What will you need?
Manufacture of magnets by their own hands does not take much time and does not require special expenses. This requires:
- oiled paper;
- copper wire;
- strongest permanent magnet.
This method is considered the simplest. It is sufficient to conduct in one direction several times a magnetizable object over a permanent strong magnet. That's all. However, it should be borne in mind that magnets manufactured by this method hold the magnetic field for a short time and lose their properties very quickly. Such products are suitable only for simple manipulations. For example, such a magnet can help remove a collapsed needle from the slot or pull the bolts, but no more. Therefore, this method should not be seriously considered.
Method of the second
The manufacture of permanent magnets cancarry out and 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. A magnetic object is attached to an electromagnet by a magnetic object.
Let's look at an example with a screwdriver. To start, the tool should be wrapped with an insulator, and then wound around 300 turns of wire. It is better to use one that is used to make transformers. After that, the wire must be connected to the battery or battery, preferably 5-12 volts. As a result of such manipulations, the electromagnetic field will magnetize the screwdriver.
Making a magnet can seem like a matter of fact.uneasy. Since the above methods do not guarantee that the properties will persist for a long time. A stronger magnet can be created using an inductor coil. The metal blank must be small, as it will need to be placed inside the coil. After that, you should follow exactly the same procedure as described in the previous method. The only difference is that the turns of the wire must be made twice as much, that is, 600. Only in this case can a good magnet turn out.
Making a magnet in this caseprovides for 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 will work. It must be connected in series with an inductor coil, inside which is a metal workpiece.
Of course, when you include such a design inthe fuse blows. However, in this short period of time, the metal workpiece will have time to be charged, since in this case a fairly strong electromagnetic field is created. Here it is worth considering one nuance: the higher the current, the stronger the magnet will turn out. For coil winding it is worth using only copper wire.
Making permanent magnets at home is a simple process. However, when using certain schemes, care should be taken.
The most powerful permanent magnet is considered to beneodymium. You can make it at home, but this requires a rare earth metal blank - neodymium. In addition, an alloy of boron and iron is used. This blank is magnetized in a magnetic field. It is worth noting that such a product has a huge power and loses only 1 percent of its properties for a hundred years.