论文部分内容阅读
刀具材料的进步对人类发展的文明史有重要的影响。70年代中期清华大学采用氮化硅陶瓷作为金属切削刀具,取得了成功,并在国际上最早实现了用热压氮化硅陶瓷刀具对多种难加工材料进行多种工艺的加工和生产应用,引起了广泛的关注和重视。复合氮化硅陶瓷刀具具有优良的耐磨性、红硬性和抗热、抗冲击性。切削寿命比硬质合金刀具高10～100倍,比氧化铝陶瓷刀具高2～10倍,切削速度比硬质合金刀具高3～10倍。由清华大学发明,方大陶
The advancement of cutting tool material has had a significant impact on the history of civilization in human development. The mid-1970s, Tsinghua University, using silicon nitride ceramic as a metal cutting tool, and achieved success, and the earliest achieved in the world with a hot pressing of silicon nitride ceramic tools for a variety of difficult to process a variety of materials processing and production applications, Aroused widespread concern and attention. Composite silicon nitride ceramic knives have excellent wear resistance, red hardness and heat resistance, impact resistance. Cutting life than carbide cutting tools 10 to 100 times higher than the alumina ceramic cutting tools 2 to 10 times higher cutting speed than carbide cutting tools 3 to 10 times. Invented by Tsinghua University, Fang Tao