Detailed explanation of the production process of NdFeB strong magnet

NdFeB magnets are widely cited for their excellent magnetic energy and low price. Mainly used in electro-acoustic devices, components, instrument industry, automotive industry, nuclear magnetic resonance, magnetic therapy, health care and other fields. The use is very extensive.

NdFeB magnet is a kind of strong magnetic material that will not be demagnetized at room temperature, so it is also called permanent magnet. Its main production process is as follows:
Ingredients-Smelting formulation-milling-pressing-sintering tempering-magnetic testing-grinding-cutting-electroplating-finished products.

From the above figure, we can see that from raw materials to finished products, we have to go.11 steps, but in fact, the details of magnet processing and production are not limited to these 11 production links. We started with a batch of rare earth alloy and pure iron materials, carried out corresponding inspection and weighing, and produced blank materials through a series of processes of smelting, milling, pressing molding, sintering and tempering. Then, the produced cylindrical and square blanks were processed and produced first. Why, because the surface of the bought blank material is very rough and uneven, only viscose is needed for polishing. The viscose link is very important. The magnet blank needs to be glued to the asbestos board, and then the asbestos board needs to be glued to a fixture. After gluing, the fixture is mounted on the slicer and adjusted before cutting can be started.

Usually, a square magnet needs to be cut at least three times, that is to say, the material needs to be pasted three times, and after each cut, it needs to be boiled in water, in order to boil off the glue and facilitate the material to be pasted again. A square magnet needs to be chamfered after it is cut, because the water chestnut of the cut magnet is very sharp, which is not conducive to electroplating and is not conducive to the safety of the product. After electroplating is completed, the product is magnetized, inspected, packaged and shipped. Therefore, a small magnet looks very simple, but its production process is very troublesome. Some customer orders need to be delivered, which is unreasonable. According to our magnet processing technology, a product needs three days at the earliest. It takes time to complete, and it also needs to ignore the cost and all conditions to reach this delivery date. Magnet seems simple, and its production and processing are more complicated.

Source: magnet manufacturers Youlian Magnetic Industrywww.youliancy.com