Cermet materials are emerging, cutting tools challenge the future
Ceramic tools are a new material tool in modern metal cutting. It can not only improve production efficiency and process superhard materials that cannot be processed by ordinary blades but also complement the existing various tools.
It is a new force in the tool family and occupies a very important position in the machining industry. In general turning processing, cemented carbide is the preferred tool material of various machinery manufacturers.
However, on some finishing occasions, the wear resistance of traditional cemented carbide tool materials and the sharpness of the cutting edge is difficult to satisfy the workpiece at the same time.
Small size tolerances, high surface quality, and high production efficiency are required. The choice of cermet cutting tools is the most direct and effective way to solve this problem. It should arouse the attention of the industry.
Cermet is also known as titanium-based cemented carbide (also known as “ceramic gold”, “pottery gold”, etc.). It has excellent mechanical properties and high-temperature performance.
It not only has the high hardness of ceramic materials but also has the advantages of metal materials. Strong and resilient, and the price is relatively low.
But for a long time, the application of cermet as a cutting tool material is far less extensive than other similar cemented carbides. In recent years, the development and application of cermet tool materials are gradually receiving attention, and their application scope is also expanding.
Because the high-temperature performance of cermet is obviously better than cemented carbide.
Compared with cemented carbide, cermet has the following performance characteristics:
The friction and wear of the tool flank are mainly caused by the relative movement between the tool and the workpiece, which is directly related to the hardness and high-temperature hardness of the tool.
Metal ceramic blades have high hardness and good red hardness, so their flank surfaces have better wear resistance.
High hardness is also an important factor in improving the wear resistance of the rake face of the tool.
The surface free energy of a material is related to its enthalpy value, surface tension, etc and it is the basic index to characterize the surface performance of the material.
Quote-[1] Xiao Yongqing. The sudden emergence of cermet materials and cutting tools challenge the future [J]. “Ceramics”, 2019,000(008): 63-69
