For cryogenic treatment can improve the performance of the reasons as follows:

1) It makes the softer austenite into a harder, more stable, higher wear resistance and heat resistance of martensite;
2) treatment by ultra-low temperature, the lattice of the processed material having high hardness is more widely distributed, the particle size of carbide particles is more refined;
3) in the metal grains can produce a more uniform, finer and more dense with tiny material organization;
4) due to the additional micro-particles and the finer carbide lattice, thus resulting in a denser molecular structure, so that the material inside the microvoids is greatly reduced;
5) cryogenic processing material after internal thermal and mechanical stresses is greatly reduced, thereby effectively reducing the likelihood of product cracks. In addition, after cryogenic treatment not only has a high abrasion resistance, and jeopardizing their own residual stress than untreated products is greatly reduced;
6) carbide to be treated, since the electron kinetic energy is reduced, so the molecular structure to generate new combinations.