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Low cycle fatigue properties in excellent carburizing parts
Low cycle fatigue properties in excellent carburizing parts
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机译：出色的渗碳零件的低循环疲劳性能
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摘要
PROBLEM TO BE SOLVED: To improve both of tooth flank strength and low cycle fatigue strength of the root of tooth, which are required for deferential gear (a carburized component).;SOLUTION: The carburized component comprises 0.10 to less than 0.30% C, 0.10% or less Si, 0.20-0.60% Mn, 0.015% or less P, 0.035% or less S, 0.50-1.00% Cr, 0.50-1.00% Mo, 0.0005-0.0030% B, 0.010-0.100% Ti, 0.010-0.100% Nb and balance Fe with inevitable impurities; has a surface layer C concentration after gas carburization treatment of 0.40-0.60%, an effective hardened layer depth of 0.6-1.2 mm defined by limit hardness of 513 HV, and a surface hardness after shot peening treatment of 700 HV or higher.;COPYRIGHT: (C)2009,JPO&INPIT
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机译：要解决的问题：为了同时提高差速齿轮（渗碳成分）所需的齿面强度和齿根的低周疲劳强度;解决方案：渗碳成分的C含量为0.10到小于0.30％， Si 0.10％以下，Mn 0.20-0.60％，P 0.015％以下，0.035％以下S，0.50-1.00％Cr，0.50-1.00％Mo，0.0005-0.0030％B，0.010-0.100％Ti，0.010- Nb 0.100％，Fe不可避免地带有杂质;气体渗碳处理后的表面层C浓度为0.40-0.60％，有效硬化层深度为0.6-1.2 mm，由513 HV的极限硬度定义，喷丸处理后的表面硬度为700 HV或更高。 ：（C）2009，日本特许厅＆INPIT
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