Alumina based ceramic cutter

The emergence and development of engineering ceramic knife has promoted the cutting technology to a new height. Ceramic tools were developed in the 1950s. The Hardness of the tools reached 93HRA-94HRA, and the Flexural strength was 800-1000MPa. They can cut normally at 1200-1300 ℃.

Alumina based ceramic tool was successfully developed in the 1960s and put into use in the 1970s. It is also one of the most widely used ceramic tool materials at home and abroad. Since the domestic Shandong University began to develop alumina carbide series composite ceramic tools in the 1980s, it has achieved remarkable results, and its mechanical properties have reached the international advanced level. This material knife has high wear resistance and stability of the cutting edge, making it particularly suitable for high-speed cutting, fully utilizing its advantages of thermal hardness. Currently, it is mainly used for precision turning of gray cast iron and steel, which can achieve good surface quality. For example, the CC650 ceramic tool launched by Sandvik Company in Sweden and the Widalox ceramic tool produced by Widia Company in Germany belong to this category. When it is used to process chilled cast iron rolls, hardened high-strength steel, silicon manganese steel, Tool steel and stainless steel, the wear of the tool flank is very small and the surface roughness is low.

Alumina ceramic cutter

At present, the research on multiphase alumina composite tool materials has involved various oxides, nitrides, carbides and Boride ceramics, and has made great progress in material properties and applications. The addition of zirconia in alumina can further improve the Fracture toughness and strength of alumina ceramic tool materials by utilizing its phase transformation toughening mechanism. At present, CC620 in Sweden, SN60 and SN80 in Germany, CerMaxt460 in the United States and other tool brands are zirconia transformation toughened alumina ceramic tools.

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