In the process of manufacturing permanent magnets, it is necessary to first prepare a sand demon in the shape of a magnet, and then heat the raw materials such as Red Valley, sulfur, nickel, iron, aluminum, and titanium to above 1600 degrees Celsius. After melting all the metals into liquid, pour the metal solution into the sand film. As the gas inside the hardened sand film is flammable, use a hammer to open the mold and let air enter the mold to cool the material, allowing the gas to burn out, Wait until it cools down and forms, separating the metal from the sand blocks. At this stage, the cast metal is still a regular iron block and has no magnetism!

Next, tie the metal onto the copper tube and insert it into a larger tube. Place the copper tube in the middle position, surrounded by sand and gravel, seal both ends of the tube with concrete, expose the copper tube, heat it in the furnace to 700 degrees Celsius, and then remove it. Fix the high voltage charge current aligned at both ends of the copper tube with clamps, and then remove the metal part.

After this process is completed, the magnet is basically a bit magnetic and the correct magnetic field direction is established. Due to the fact that all the magnets we use in our daily lives are magnetized, if not magnetized, the magnetism of the magnet will be very small. After a period of time, the weak magnetism of the magnet will completely disappear. Therefore, we need to magnetize the magnet to make it a permanent magnet.