1. Elimination of retained austenite: generally, the retained austenite after quenching and tempering is about 8-20%, and the retained austenite will be further martensitized with the passage of time. In the process of martensite transformation, the volume expansion will be caused, which will affect the dimensional accuracy, and increase the stress inside the lattice, which… Read more Mechanism of cryogenic treatment
Tag: low temperature
A manufacturing method of bimetal saw band and cemented carbide ultra low temperature treatment process
Bimetallic saw band is a kind of composite material formed by electron beam welding of high-speed tool steel and high-strength hot working alloy steel of back material, which is processed by multiple processes. Due to the characteristics of composite materials, the two materials have different optimal quenching and tempering process parameters, so it is impossible… Read more A manufacturing method of bimetal saw band and cemented carbide ultra low temperature treatment process