论文部分内容阅读
本发明涉及金属结合剂金刚石磨具,包括砂轮、锯片、孕镶钻头、回采空心钻头和磨头等。其工作部分由金刚石或立方氮化硼磨粒被结合胎体把持而成。合适的金属结合剂有铁、镍、钴及其合金等。 磨具的工作部分一般是将磨粒和粘结金属粉末混合后,装在模子中以适宜的温度烧结而成的。生产这种磨具的困难之一就是:当烧结温度低于磨粒开始退化的温度时,烧结成的胎体往往难以达到需要的韧性和硬度。尤其是人造金刚石,它在高于1000℃时会发生石墨化。
The present invention relates to a metal bond diamond abrasive comprising a grinding wheel, a saw blade, a pregnant drill bit, a hollow core drill bit, a grinding head and the like. Part of its work by the diamond or cubic boron nitride abrasive particles are combined with the carcass dominated. Suitable metal binding agents are iron, nickel, cobalt and their alloys. The abrasive part of the work is generally abrasive and bonded metal powder mixture, installed in the mold at a suitable temperature sintering. One of the difficulties in producing such a grinding tool is that when the sintering temperature is lower than the temperature at which the abrasive particles begin to degenerate, the resulting matrix tends to be hard to achieve the desired toughness and hardness. Especially artificial diamond, which is graphitized above 1000 ° C.