Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibuCase hardening is a heat treatment process used to improve the surface hardness and wear resistance of steel while maintaining a softer and more ductile core. This is achieved by adding carbon or nitrogen to the outer layer of the steel, creating a hardened “case” around a tougher “core.” Case hardening is commonly used in various industrial applications, such as manufacturing gears, camshafts, bearings, and other components that require both surface hardness and core toughness.s leo.