黑剛玉

黑剛玉又名低鋁剛玉砂，鐵砂粉。黑剛玉是一種新型拋光材料，以三水型和一水型鋁礬土為原料經(jīng)電弧爐高溫冶煉而成。黑剛玉磨料基本粒集中，切削力強(qiáng)，韌性大，剛?cè)嵯酀?jì)，耐磨性好，工效高。主要用于不銹鋼，金屬制品，光學(xué)玻璃，竹木制品的拋光和噴砂，又是制造樹脂砂輪，切割片，砂布的新穎材料。

Black aluminium oxide

Black aluminium oxide(lower aluminium oxide abrasive)is a new type abrasive material for polishing various metal.Black aluminium oxide abrasive is featured with high hardness,strong tenacity,good self-sharpening,better cohesisness,higher durability,less heat generated in grinding and giving the metal works high finish,less power weakened in grinding.It is mostly used in grindin 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.