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Are superior in induction hardening Characteristic the steel for cold working and the part and its production manner null for machine structure
Are superior in induction hardening Characteristic the steel for cold working and the part and its production manner null for machine structure
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机译:感应淬火性能优异。冷加工用钢及其零件及其生产方式对机械结构无效
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摘要
PROBLEM TO BE SOLVED: To produce a steel excellent in cold workability and induction hardenability, and in which grains are not coarsened by induction hardening, to produce parts for machine structures using it as a base material steel and to provide a method for producing the same. ;SOLUTION: A steel for cold working excellent in induction hardenability is the one having a compsn. contg., by weight, 0.40 to 0.60% C, 0 to 0.40% Si, 0.10 to 0.60% Mn, 0.0005 to 0.005% B, 0.005 to 0.05% Nb and 0.015 to 0.10% Al, furthermore contg. 0 to 0.30% Pb, 0 to 0.10% Bi and 0 to 0.10% Te, and the balance Fe with inevitable impurities, and in which, in the impurities, ≤0.015% P, ≤0.015% S, ≤0.10% Cu, ≤0.10% Ni, ≤0.15% Cr, ≤0.10% Mo, ≤0.005% N and ≤0.005% O are regulated. Parts for machine structures are ones in which a base material steel has the similar chemical compsn., having spheroidized carbides and provided with a quench-hardened layer on the outer circumferential part.;COPYRIGHT: (C)1999,JPO
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