Greenleaf公司一向独占美国、加拿大的陶瓷刀具市场,现又有四家公司加入这个行列,使竞争激化。这四家公司为Kennametal、GTE Valeron、GE Carbolog、Fansteel。陶瓷刀具已在飞机制造厂引起重视,特别是Greenleaf公司用陶瓷刀具切削铝材中添加35%硅的WG—300时,切削效率约为普通 Greenleaf company has always exclusive the United States, Canada, ceramic tool market, there are four companies to join this ranks, so that competition intensified. The four companies are Kennametal, GTE Valeron, GE Carbolog, Fansteel. Ceramic cutting tools have attracted the attention of aircraft manufacturers. Especially when Greenleaf used WG-300 with 35% silicon added to cut aluminum with ceramic cutting tools, the cutting efficiency was about normal