| abstract |
A kind of preparation method of the motor of elevated operating temperature sintered NdFeB magnetic shoe of the present invention, Nd Fe B alloys piece is made using vacuum rapid hardening smelting furnace, hydrogen is broken to obtain coarse powder, lubricant is added, it imports oxygen progress airflow milling and wears into fine powder, add antioxidant, and carry out oriented moulding and isostatic sintering obtains shoe blank, shoe blank is carried out to be cut into segment, solidification is bonded after carrying out grease removal processing to cut surface, short transverse after regrinding out shoe chord width and bonding, carry out tile cutting, reshaping mill, pre-electroplating treatment, and it is electroplated, Passivation Treatment or spraying organic matter coating, neodymium iron boron tile magnet is made.The non-oriented direction of tile-shaped magnet by way of being bonded by the present invention using multistage, it has been obviously improved the Pc value of tile magnet, subtract magnetic characteristic so that the high temperature of tile magnet is anti-and significantly improved, the heavy rare earth dysprosium terbium dosage that elevated operating temperature motor neodymium iron boron magnetic body can be reduced, significantly reduces the material cost of motor high-performance Ne-Fe-B tile product. |