How To Make A Permanent Magnet
Source:Ace Li | Author:Ace Li | Published time: 2021-09-01 | 232 Views | Share:

1. For casting: we need to prepare a mold in advance, which is why we see that some magnets are U-shaped, some are centered, and some are bar-shaped. This is because different molds are used to produce different magnets. Then prepare the raw materials for the magnet, including copper, cobalt, sulfur, nickel, iron, aluminum, and titanium. Heat these metals to 1600°C. After the metal is melted, pour it into the mold and wait for it to cool and set. So far, there is still no magnetism.

2. Magnetize: take out the semi-finished product from the mold, tie it to a copper tube, put it in a larger tube, put the copper tube in the middle, seal both sides with silica sand, and seal the concrete at both ends to expose the copper with sealant . Pipe end. After heating to 700°C, a low-voltage and large charging current is applied to both ends of the copper tube, so that the magnet is basically a little magnetic and also has magnetic poles.

3. Permanent Magnetizing: The magnets used in our lives have all gone through the process of magnetization. If they are not magnetized, the magnetism of the magnet will be very small. After a period of use, the tiny magnetism will also disappear. So it needs to be magnetized to make it a permanent magnet. Put the metal in the magnetizer and magnetize the metal to make it magnetic. Then after applying alternating current, the capacitor is charged with high voltage, a large amount of capacity is stored for later use, and then discharged through a coil with a smaller resistance. It should be noted that the peak current during discharge is very high, reaching tens of thousands of amperes. The strong magnetic field generated by the electromagnetic can make the metal permanent magnetization. In this way, the magnet is made.