自动化预烧温控系统在永磁铁氧体材料生产中的应用  

Application of automatic pre-sinteringtemperature control system in production of permanent magnet ferrite materials

作　　者：王倩[1,2] 张威峰 刘辉 刘景涛 贾立颖 刘荣明 胡国辉[1] 魏汉中 牛辉辉 李炳山 WANG Qian;ZHANG Wei-feng;LIU Hui;LIU Jing-tao;JIA Li-ying;LIU Rong-ming;HU Guo-hui;WEI Han-zhong;LI Bing-shan(National Engineering Research Center for Magnetic Materials,Beijing 102600,China;BGRIMM Magnetic Materials＆ Technology（Fuyang）Co.Ltd.,Fuyang 236000,Anhui,China)

机构地区：[1]国家磁性材料工程技术研究中心,北京102600 [2]北矿磁材(阜阳)有限公司,安徽阜阳236000

出　　处：《金属功能材料》2018年第5期29-32,共4页Metallic Functional Materials

基　　金：2017年度北京市丰台区科技三项费专项资助(KSF201709)

摘　　要：采用＂高精度自动化预烧温控系统＂进行铁氧体永磁磁粉的预烧控制,可实现五段十五点温度检测及远程自动化温、压控制。与传统预烧系统相比,该系统温度精度提高50%,达到±5℃,预烧温度标准偏差由3.96℃降低为1.19℃,温控准确性提高70%。采用该系统生产12系列铁氧体预烧料,产品预烧性能明显提高,剩磁Br平均值提高1.71mT,内禀矫顽力Hcj平均值提高9.56kA/m。各项预烧后磁特性指标的稳定性大幅提高,剩磁Br标准偏差降低61.56%,内禀矫顽力Hcj标准偏差降低37.18%。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%to5℃.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 Brincreased by 1.71 mT.The average value of intrinsic coercive force Hcjincreased by 9.56 kA/m.The stability of each magnetic characteristic index is greatly improved.The standard deviation of residual magnetic Bris reduced by 61.56%.The standard deviation of intrinsic coercive force Hcjis reduced by 37.18%.

关 键 词：永磁铁氧体 预烧 自动化 磁性能 

分 类 号：TM277[一般工业技术—材料科学与工程]