Browse Publications Technical Papers 1999-01-0601
1999-03-01

Development of Nitrocarburizing Steel for Crankshafts 1999-01-0601

The purpose of our research is to omit normalizing after hot forging in nitrocarburized crankshafts. Based on fundamental studies about the influence of chemical composition on as-forged and nitrocarburized properties, the authors have developed a new nitrocarburizing steel composed of 0.3% carbon, 0.8% manganese, and 0.02% nitrogen. The newly designed crankshafts for compact cars using the steel can be in use without the normalizing and have equivalent properties to conventional crankshafts, though the treatment is an indispensable process for conventional ones.

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