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最近,美国通用电气公司特殊材料部(GESuperabrasires)推出一种牌号为BZN8000的新型材料。该材料是把多晶立方氮化硼(PCBN)与陶瓷合成熔合到碳化钨基体上的一种复合刀具材料。这种复合材料制成的刀具用来精加工淬火钢(HRC>45)效果极佳。PCBN/陶瓷复合刀具既具有多晶立方氮化硼的高硬度,又具有陶瓷的热稳定性和化学稳定性。在加工中采用这种刀具可取代精磨工序,提高生产效率。众所周知,切削加工通常比磨削加工的金属切除率高,而且工件的表面完整性较好,热损伤少。如在县
Recently, GESuperabrasires, a division of the U.S. General Electric Company, introduced a new material, BZN8000. The material is a composite tool material that synthesizes polycrystalline cubic boron nitride (PCBN) and ceramic to the tungsten carbide substrate. The tool made of this composite material is excellent for finishing hardened steel (HRC> 45). PCBN / ceramic composite tool not only has the high hardness polycrystalline cubic boron nitride, but also has ceramic thermal stability and chemical stability. In the process of using this tool can replace the grinding process, improve production efficiency. As we all know, cutting is usually higher than the metal removal rate of grinding, and the workpiece surface integrity is better, less thermal damage. As in the county