黑刚玉砂(又名底铝刚玉砂,铁砂粉)是一种新型抛光材料.以三水型和一水型铝樊土为原料经电弧高温冶炼冷却加工而成.黑刚玉磨料基本粒集中,切削力强,任性大,刚柔相济,耐磨性好,工效高.主要用于不锈钢,金属制品,光学玻璃,竹木制品的抛光和喷砂,又是制造树脂砂轮,切割片,砂布的新颖磨料.

Black aluminum oxidde abrsasives is a new type abrasive material for polishing various metal works.It is electrical fused in an arc furnace from aluminum oxide as raw material.Black aluminum oxide abrasive is featured with high hardness.strong tanacity,good self-sharpening,better cohesiseness,higher durability,less heat generated in grinding and giving the metal works high finish,less power weakened in grinding.It is mostly used in grinding and polishing stainless steel,metal works,optical glass,bamboo or articles.and it is also the new grinding material of producing colophony grinding wheels, slice,and emery cloth.