One of the production processes of NdFeB magnet: smelting. Smelting is the process of producing sintered NdFeB strong magnet. The smelting furnace produces alloy strip slinger. The process needs the furnace temperature to reach about 1300 ℃ and lasts for four hours. After this process, the raw materials of the magnet are processed into alloy sheets through hot melting and cooling, and the next process is hydrogen crushing. The smelting section is carried out after batching. This process is responsible for casting the prepared materials into pieces or ingots, which are completed by large furnace and small furnace respectively.
The following is the introduction of the melting of the casting piece by the aisen magnets: the instruments and auxiliary materials required in the smelting process of NdFeB magnet production process are basically the same, such as gloves, masks, lighting, etc. in comparison, the process of the casting ingot is messy, and the casting piece needs to be worn to avoid scalding; Secondly, carefully check the steel wire rope and other equipment when hoisting, and it is required to be carried out in the unmanned area; during the third pouring, pay attention to the abnormal phenomenon, only when there is no abnormal can it continue; during the fourth replacement of tundish, wear a mask to reduce the damage of dust to human body, avoid the pollution of human body to the casting piece, and avoid the scratch of casting piece.
Nd-Fe-B magnet smelting section plays an important role in the follow-up pulverizing, magnetic field orientation and sintering. Improper handling of such links will have an irresistible impact on the overall function of magnetic materials. The magnet blank shall be put into storage after passing the magnetic function test and being judged as qualified. According to the order, the machine will be delivered to the external grinder workshop. One of the production processes of NdFeB magnet: smelting. The commonly used grinding methods of square neodymium iron boron magnet blank are: flat grinding, surface grinding at both ends, internal circular grinding, external circular grinding, etc. Cylindrical neodymium iron boron magnet blanks are often selected as coreless grinding and double end flat grinding. Tile shaped magnet, fan-shaped and special-shaped NdFeB magnet blank is selected by multi station grinder. The cylindrical grinding machine shall be used for rough grinding and fine grinding according to the outer diameter scale of the cylindrical blank. The rough grinding will grind off the oxide black skin occurred during sintering. The fine grinding shall be carried out within the scope of the public service according to the outer diameter requirements of the product magnet on the order. After the external grinding, all the columns will enter the next process, the magnet light Column viscose processing, preparing for batch slicing.
To judge whether the magnet product is qualified, not only the function is required to be qualified, but also the operation of the service value of the magnet scale directly affects its product function and application. The accuracy of the service value of the magnet scale also depends on the manufacturing strength of the factory. With the continuous updating of the economic and social market demand for processing equipment, more efficient equipment and the automation trend of industrial processing not only satisfy the increasing demand of customers for magnet precision, but also save manpower and capital. One of the production processes of NdFeB magnet: smelting is the product with market competitiveness.
