CHROMIZING OF STEEL BY HIGH-FREQUENCY INDUCTION HEATING

high frequency induction heating

A drawback in the diffusion induction heating metallizing of alloys by various elements is the considerable lengthiness of the process, which can be accelerated only by increasing the temperature. This, however, considerably impairs the properties of the metal base, and also reduces the durability of the furnace equipment at high temperatures. The thermochemical treatment of the alloy may be accelerated by using induction heating, thereby ensuring a high temperature in the surface layer. In a number of investigations, diffusion saturation using trowelled-on pastes and powder packs by high-frequency induction heating has been tried [1, 4,6, "7, 8]. Diffusion coating of steel by metal from a gaseous medium has been found possible [2, 3, 5]. ~y the uSe of highfrequency induction heating, the duration of the process is shortened, compared with the use of external sources of heat. This article describe the investigation of the chromizing of steel by high-frequency induction heating in a vacuum. The chromizing mixtUre used was a low-carbon ferro chrome mark KhrO and electrolytic chromium. Steels 10 and U8 were used for saturation.

CHROMIZING OF STEEL BY HIGH-FREQUENCY HEATING

CHROMIZING OF STEEL BY HIGH-FREQUENCY HEATING.pdf