TECHNOLOGY FOR CRYOGENIC TREATMENT OF STEEL USING TEMPORARY COATINGS
Abstract - In the processes of heat treatment of steels, including hardening, it is possible to obtain improved mechanical properties due to its martensitic structure. In steels in which the transition from austenitic to martensitic structure occurs in the region of cryogenic temperatures, an increase in the cooling rate makes it possible to improve their mechanical properties. Based on our research work, a technology is presented that allows using temporary coatings of frost, sand, magnesium sulfate, etc. to control the cooling rate of steels. Using these coatings, we were able to increase the cooling rate by 9-12 times and increase the hardness by more than 20 percent compared to conventional heat treatment.
Keywords - Cooling Rate Enhancement Technology, Cryogenic Heat Treatment, Temporary Coating Layer.