Magnetic field orientation, China is the world’s use of two-step pressing molding country, orientation with small pressure vertical molding, finally using quasi-isostatic pressing molding, which is one of the important characteristics of Sintered NdFeb Magnets industry in China.
It is very important to monitor the quality of production process, which can be controlled by SC sheet thickness measurement and JM powder particle size distribution. High-quality products are determined by the control of the production process, but the customer will be very confused, how to judge the performance of the product I buy?
China National Institute of Metrology has developed a variety of types of permanent magnetic material technology magnetic parameters measuring instruments. The pulsed magnetic field magnetometer (PFM) is a test instrument for testing ultra-high coercive Permanent Magnets, mainly adapted to the Super Strong Permanent Magnets required in the field of electric vehicles and large Permanent magnet motors.
Customers can select their own NdFeb brand according to the magnetic parameters Br(remanence), Hcb(coercivity), Hcj(intrinsic coercivity), (BH) Max (large magnetic energy product), and these four parameters are to determine whether the product is in accordance with customer requirements of production standards.
The size of the magnet depends on the processing strength of the factory, the actual application of NdFeb permanent magnet shape is diverse, such as disc, cylinder, cylindrical (with inner hole); Square, square column; tile, fan, trapezoid, polygon and all kinds of irregular shape.
Each shape of permanent magnet has a different size, and it is difficult to form it in one time. Xinfeng company general production process is: First output large (large size) of billet, after sintering and tempering treatment, through mechanical processing (including cutting, punching) and grinding, surface coating (coating), then the magnet performance, surface quality and dimension precision of detection, and then the magnetization, packaging and delivery.
Whether a magnet is qualified or not requires not only the performance to reach the standard, but also the control of size tolerance directly affects its application. And the guarantee of size directly depends on the processing strength of the factory, processing equipment is constantly updated with the economic and market demand, more efficient equipment and the trend of industrial automation. It not only meets customers’ increasing demand for product accuracy, but also saves manpower and cost, making it more competitive in the market. Therefore, the main equipment of Xinfeng company includes 20 sets of vacuum sintering furnaces, 1000 sets of internal circular slicing machines, 500 sets of wire cutting equipment, 300 sets of drilling machines, 50 sets of various grinding machines, so that customers can guarantee the delivery time, quality and service satisfaction.
Hangzhou Xinfeng Magnetic Material Co., Ltd. is a professional manufacturer of NdFeb Permanent Magnets, Smco Permanent Magnets, Alnico Permanent Magnets and Magnetic Assembly. Welcome you to contact us!
Post time: Jun-13-2022