What is Induction Surface (Case) Hardening?
The induction heating process provides a purely thermal means of surface hardening steel and cast iron components. A martensitic surface layer is produced, which gives high wear resistance and is compressively stressed to increase fatigue strength. The core material is unaffected and remains soft and ductile. In order to induction harden steel requires a minimum carbon content of 0.3%. Features of the Induction Hardening Process: • High power density giving very rapid heating • Heat confined to selected areas • Control of heated depth • Complete control of time, power and hardening temperature • Heat is generated within the component Resulting in: • Energy savings due to efficiency of process • Minimal distortion • Complete repeatability • Can be easily automated • Fit into existing production lines • Operation by unskilled labour • Working environment and health and safety benefits over alternative methods of heating Induction Hardening Technology When a metal work-piece (component) i
