THE BENEFITS OF INDUCTION HARDENING
Induction hardening uses induced heat and rapid cooling (quenching) to increase the hardness and durability of steel. Induction hardening is a method of quickly and selectively hardening the surface of a metal part. A copper coil carrying a significant level of alternating current is placed near (not touching) the part. Heat is generated at, and near the surface by eddy current and hysteresis losses. Quench, usually water-based with an addition such as a polymer, is directed at the part or it is submerged. This transforms the structure to martensite, which is much harder than the prior structure. It is a no-contact process that quickly produces intense, localised, and controllable heat. Induction is being used to harden numerous components, such as gears, crankshafts, cylinder bars , drive shafts, output shafts, torsion bars, rocker arms, CV joints, tulips, valves, rock drills, slewing rings. TYPICAL INDUCTION HARDENING MATERIALS Typical materials include: 1045 ...