Manufacture of small bearings from atomized powders

Conclusions Processes have been developed for the manufacture of atomized copper, tin, and bronze powders suitable for the bearings of the electric motors of domestic air conditioners. A technique has been developed for the production of small instrument journal bearings possessing good operating characteristics.Translated from Poroshkovaya Metallurgiya, No. 8(224), pp. 48–52, August, 1981.     

利用钢渣制备颜料型磁性氧化铁粉的试验研究

以磁选钢渣为原料,采用低温焙烧—磁选工艺,可以制备出颜料型磁性铁粉。借助化学分析、XRD分析和着色力分析等手段,研究了焙烧温度和时间对磁选钢渣制备的颜料型磁性铁粉的组成和性能的影响。结果表明:磁选转炉钢渣可以制备具有高着色力和遮盖力的颜料型磁性铁粉;随着反应温度的升高,磁性铁粉的w(Fe)和着色力均呈升高的趋势,而遮盖力呈降低的趋势;随着反应时间的延长,磁性铁粉的着色力呈升高趋势,而遮盖力呈先升高后降低的趋势,当反应时间为30min时,其遮盖力最大,为56g/m2。