In the application of hard machining super hard cutting tool
发布时间：2015-05-05
Compared with the hard alloy cutting tool coated carbide tool, regardless of the strength, hardness and wear resistance are greatly improved. Turning hrc45~55 hardness of the workpiece, coatinghard alloy with low cost can be achieved in high speed machining. In recent years, some manufacturers using the improved coating method, the performance of coated tools has greatly improved. Some manufacturers such as the United States and Japan by Swiss AlTiN coated bladecoating materials and new coating patent technology production, hv4500~4900 hardness,hardness of hrc47~58 die steel in cutting speed 498.56m/min. At the turning temperature up to 1500~1600 ~ C, still does not reduce the hardness of oxidation, the blade life is 4 times of thecoated blade, while the cost is only 30%, and good adhesion. Ceramic tool material with the improvement of the structure and the pressing process, especially the development of nanotechnology, the toughening of ceramic tools become possible in the near future, ceramics,high speed steel, hard alloy may be followed after the third revolution caused by cutting. The ceramics have high hardness (hra91~95), high strength (flexural strength 750~1000mpa), good wear resistance, good chemical stability, good adhesion resistance, has the advantages of low friction coefficient and low price etc.. Not only that, the ceramic tool also has high temperature high hardness, hardness of hra80 1200 ~ C.
