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The steel for induction hardening and the bracket axle null mass which uses
The steel for induction hardening and the bracket axle null mass which uses
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机译：感应淬火用钢和使用的支架轴零质量
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摘要
PROBLEM TO BE SOLVED: To provide steel for induction hardening which can be suitably used as steel for a crankshaft since grinding cracks are not caused even when grinding is performed after induction hardening or low temperature tempering, and to provide a crankshaft obtained by using the same.;SOLUTION: The steel for induction hardening has a steel composition comprising 0.2 to 0.4% C, 0.4 to 2.0% Si, 0.8 to 2.0% Mn, 0.05 to 2.0% Cr, 0.04 to 0.1% S, 0 to 0.050% Al and 0.002 to 0.025% N, and the balance Fe with inevitable impurities, and in which the number of MnS in the steel in the longitudinal section after rolling is ≤300 pieces/mm2, and further, the shrinkage in the longitudinal direction of a test piece in a differential type heat expansion test under the conditions where the shape of the test piece is a cylindrical body with an outer diameter of 5 mm and length of 10 mm, and test temperature is 400°C after induction hardening or and tempering at ≤250°C is ≤15 μm.;COPYRIGHT: (C)2005,JPO&NCIPI
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机译：要解决的问题：提供感应淬火用钢，因为即使在感应淬火或低温回火后进行磨削也不会引起磨削裂纹，所以可以适合用作曲轴用钢，并且提供通过使用该感应淬火用钢获得的曲轴解决方案：感应淬火钢的钢成分包括0.2至0.4％C，0.4至2.0％Si，0.8至2.0％Mn，0.05至2.0％Cr，0.04至0.1％S，0至0.050％Al和N为0.002〜0.025％，余量为Fe，不可避免地含有杂质，轧制后的纵断面钢中的MnS为300个/ mm 2 ，进而，在试验片的形状为外径为5mm，长度为10mm的圆柱体，试验温度为400℃的条件下的差动式热膨胀试验中，试验片的长度方向的收缩率。于250°C感应淬火或回火后是＆le; 15μm.;版权所有：（C）2005，JPO＆NCIPI
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