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June 7th, 2019

Induction hardening of cast irons

The success in induction hardening of cast irons and repeatability of obtained results are greatly affected by a potential variation of matrix carbon content.

By Dr. Valery Rudnev

Steel components by far represent the majority of thermally processed workpieces for which electromagnetic induction is used as a source of heat generation. At the same time, induction heating has also been successfully applied for heat treating of a variety of iron castings offering numerous attractive properties, microstructures, and cost advantages for different commercial applications (Figure 1). This includes hardening of camshafts, crankshafts, sprockets, crane wheels, gear housing, cylinder liners, rollers, rocker arms, flywheels, connecting rods, and many others.

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