METHOD OF PROTECTION OF LOW-CARBON-STEEL FROM DECARBONIZATION IN HIGH-TEMPERATURE TREATMENT Russian patent published in 1997 - IPC

FIELD: methods of protection of steel products in high temperature treatment. SUBSTANCE: the offered method consists in application] to surface of low-carbon steel of layer of metal powder with carbon constant Cl and thickness h whose value is connected with optimal time t_v of product protection from decarbonization h=2y , where D is coefficient of carbon diffusion into metal of base at upper temperature boundary of product treatment, and y is root pf equation given in the invention description. EFFECT: higher efficiency. 4 dwg, 2 tbl