Cryogenic Metal Treatment Systems
Shown above, the ESS Metal Cryogenic Hardening System is an elegant solution to cryo treatment of long strips of metal such as reels of razor blade. With capability to efficiently maintain cooling at -80°C this closed loop system provides a cost effective solution eliminating the expense and hassle of using expendable refrigerants in the cryo hardening process.
In the cryogenic cool treating process the material is cooled to extreme temperatures. This can a profound effect on the mechanical properties of certain steels, provided their composition and prior heat treatment are such that they retain some austenite at room temperature. It is designed to increase the amount of martensite in the steel’s crystal structure, increasing its strength and hardness. Presently this treatment is being practiced over tool steels, high-carbon, and high-chromium steels to obtain excellent wear resistance. Recent research shows that there is precipitation of fine carbides (eta carbides) in the matrix during this treatment which imparts very high wear resistance to the steels.