根据国内外市场的需要,肖山砂轮厂在浙江大学协作下,于1981年试制了人造黑刚玉磨料,1982年正式投产,并有部分产品出口。黑刚玉以三水铝矾土(也称铁矾土)为主要原料,掺加必要的辅助原料,在三相电弧炉中炼得结晶块,然后加工成各种不同粒度的产品,其化学成分见表1,物理性能见表2。 According to the needs of domestic and foreign markets, Xiao Shan Grinding Wheel Factory in collaboration with Zhejiang University, trial production of artificial black corundum abrasives in 1981, formally put into operation in 1982, and some products for export. Black corundum to bauxite (also known as bauxite) as the main raw material, add the necessary auxiliary materials, refining in the three-phase electric arc furnace crystal block, and then processed into a variety of different particle size products, the chemical composition See Table 1, physical properties in Table 2.