Development of High-Strength Nitocarburized Gear 951816

The gears used for motorcycles are required high fatigue strength, high dimensional precision and ease of machining. Therefore, a primary driven gear has been developed using a new nitrocarburized steel. The new Cr-V-Al-B nitrocarburizing steel has made it possible to raise fatigue strength by obtaining a hard and deep nitrocarburized case with a bainite matrix. This paper reports on the new nitrcarburizing steel and the result of its application to gears.


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