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棕刚玉
棕刚玉是以铝矾土等为原料，经高温熔炼结晶而成。它具有硬度高，韧性大，颗粒锋锐等特点。用其制成的磨具适用于磨削加工抗张强度高的金属材料。如：碳素钢，一般合金钢，可锻铸铁，硬青铜等。也可以作为耐火材料之用。
Brown aluminium oxide
Brown aluminium oxide is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials. It is characterized by its high hardness,good toughness and shape in size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon steel,general-purpose alloy steel,annealed malleable iron and hard broze,etc.It also can be used as refractory materials.
棕刚玉
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