The use of protected small-sized frequency converters for heating parts for hardening in combination with various quenching apparatuses designed for specific parts makes it possible to conduct heat treatment directly on the technological lines of the mechanical shops with a full production cycle. This envisages a high level of mechanization up to complete automation and the shortest production cycle without creating large interoperational reserves. The experience in the practice of induction heating in heat treatment of automobile parts is generalized.
