Why Crankshaft is case hardened?

Carburising, or case hardening, is now largely out of favour, although it has been favoured in the past, before nitriding had been invented, or whilst nitriding was at a less advanced stage of development. This process diffuses carbon into the surface of a low-carbon steel, increasing its hardenability. This can impart large increase in hardness, with considerable case-depth and an increase in wear-resistance and fatigue strength. However, owing to the harden, quench and temper nature of this treatment, distortion can be a very serious problem.

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Anand Gautam

Anand Gautam is a marine engineer, Graduated from M.E.R.I. Mumbai. He likes to sail onboard ship and is one who is passionate about his job. He loves to share his knowledge, information, and ideas to everyone in a simplified way just for his satisfaction.

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