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In the gear where after the forming, carburization it treats dedendum flexural strength and the high intensity gear
In the gear where after the forming, carburization it treats dedendum flexural strength and the high intensity gear
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机译:在齿轮成型后进行渗碳处理的齿根抗弯强度和高强度齿轮
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摘要
PROBLEM TO BE SOLVED: To provide a gear which can be produced at a low cost, and has excellent bending strength of a dedendum and pitting resistance, and to provide a production method therefor.;SOLUTION: Steel having a composition containing, by weight, 0.10 to 0.30% C, 0.50 to 1.50% Si, 0.30 to 1.00% Mn, ≤0.035% P, ≤0.035% S, 0.20 to 0.85% Cr, 0.35 to 0.80% Mo, 0.020 to 0.060% Al, 0.0080 to 0.0200% N and ≤0.010% Ti, and the balance Fe with impurities is subjected to carburization and shot peening treatment. The gear has a carburized layer having a C concentration of ≥0.60% and a retained austenite content of ≤20%, and the external layer thereof is provided with a carburized abnormal layer whose maximum depth is 2 to 10 μm. The area occupied by the carburized abnormal layer in the cross- section from the position of the maximum depth to the surface is ≥80%.;COPYRIGHT: (C)2003,JPO
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