Simultaneous dual-frequency induction heating provides true contour hardening of complex shaped components using less energy at high production rates and requiring less floor space.
Powder-metallurgy (PM) technology offers a cost-effective means to produce complex near-net shape automotive parts, such as splined hubs, cams, sprockets and a wide variety of gears. These parts usually require hard, wear-resistant surfaces in certain locations, while maintaining the ductility of the sintered matrix in the core of the part. The method most commonly specified to achieve this combination of material characteristics is induction hardening, which is a cost-effective hardening treatment when high volumes of parts are being produced. The capability to use induction heating enables faster production, consistent uniform hardening, negligible part distortion and significant cost and space reductions.