Cold treatment, also known as cold treatment, sub zero treatment and cryogenic treatment, is to continue cooling the steel parts quenched to room temperature at a temperature below MS, which is generally – 60 ~ – 190 ℃, so that the austenite transformation at room temperature has not completed transformation into martensite. The purpose of… Read more Basis of cold treatment process
Tag: cooling process
cryogenic and ultra cryogenic treatment process
After heat treatment, the hardness and mechanical properties of steel are greatly improved, but there are still the following problems after heat treatment: 1. Retained austenite. The proportion of austenite is about 10% – 20%. Because austenite is very unstable, it is easy to transform into martensite when subjected to external force or environmental temperature… Read more cryogenic and ultra cryogenic treatment process
Manufacturing method of ultra low temperature and cryogenic treatment equipment
At present, the mainstream technology of modification and strengthening treatment of formed metal materials, tools, moulds and accessories is coating. The disadvantages of coating technology are surface modification, high cost, long delivery cycle, complex technology and large investment, and it is powerless for non-standard parts, special-shaped parts and large workpieces. Cryogenic processing technology is a… Read more Manufacturing method of ultra low temperature and cryogenic treatment equipment