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美国3M 公司已研制成功了一种名叫“Regal”的新磨料,据说其性能超过目前的其他合成磨料,被认为是继十年前出现的“立方氮化硼”(CBN)以来的又一重大突破。它是由以氧化铝为主要原料和3M 公司尚未透露的其他物质所制成,其硬度达努氏(Knoop hardness)1700,韧性较传统的氧化铝磨料高出2.3倍,其寿命为氧化铝的3倍(当加工铸铁时)。它有良好的耐磨性、多孔性和抗咬焊防堵塞性能,并且由于
3M Company of the United States has successfully developed a new type of abrasive called “Regal” which is said to perform better than the other synthetic abrasives presently, and is considered to be another one since “CBN” ten years ago A major breakthrough. It is made of alumina and other materials not previously disclosed by 3M Company. It has a Knoop hardness of 1700. It is 2.3 times more ductile than conventional alumina abrasives and has a life of alumina 3 times (when machining cast iron). It has good abrasion resistance, porosity and resistance to bite-in and anti-clogging properties, and due to