1. National Engineering Research Center for Magnetic Materials, Beijing 102600, China 2. BGRIMM Magnetic Materials & Technology Fuyang Co. Ltd., Fuyang 236000, Anhui, China
Abstract：High- precision automatic pre- sintered temperature control system can realize pre- sintered five- section 15- point temperature measurement. The system can realize remote automatic temperature control and pressure control. Compared with the traditional pre- sintered system, the temperature accuracy of the system is increased by 50% to 5℃. Standard deviation of pre- sintered temperature reduced from 3. 96℃ to 1. 19℃. Accuracy of temperature control increased by 70%. Production of 12 series ferrite pre- sintered powder by the system. The performance of the ferrite pre- sintered powder is obviously improved. The average value of remanent magnetic Br increased by 1. 71mT. The average value of intrinsic coercive force Hcj increased by 9. 56kA/m. The stability of each magnetic characteristic index is greatly improved. The standard deviation of residual magnetic Br is reduced by 61. 56%. The standard deviation of intrinsic coercive force Hcj is reduced by 37. 18%.
2018, Vol. 25 
