With the development of my country's machinery industry, traditional tools have been unable to meet product quality requirements, and many difficult-to-machine materials (such as chilled cast iron, hardened steel, stainless steel, titanium alloys, etc.) are increasingly used. Among them, difficult-to-machine materials, such as stainless steel, have high content of Cr and Ni. Although Cr can improve the strength and toughness of stainless steel, it increases the bonding tendency between stainless steel and the tool; Ni can play a role in stabilizing the structure, but the plasticity of the structure is large. It is easy to cause work hardening, and tungsten-cobalt carbide tools are used for processing, but the processing effect is not very satisfactory.
Cermet has excellent comprehensive properties such as high strength, high hardness, wear resistance, high temperature resistance, oxidation resistance and chemical stability, and has good effects on cutting and machining of specific difficult-to-machine workpieces.
After a long-distance cutting test, although the tool is worn, it can be seen from the metallographic diagram that the tool marks are neat and the surface quality is still good, which is still excellent compared with the traditional tool. From this comparison, it can be concluded that the service life of this tool is more The service life of other tools is 3 to 5 times, and the quality of the machined surface is better and better.
After the tool is worn out, the new tool can be achieved without the need for repeated coating and mold repair. As an advanced cutting tool, the cermet tool has high hardness and wear resistance, and the high-speed machining effect is very ideal. It can also greatly improve production efficiency and prolong tool life. , Really reduce production costs, high product finish, and achieve mirror effect. The use of high-tech metal ceramic end mills only needs to increase the speed of the original tungsten steel by about 20%.
