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公开(公告)号：US4584032A
公开(公告)日：1986-04-22
申请号：US559535
申请日：1983-12-08
申请人： Kenji Isokawa , Kunio Namiki , Kenji Takahashi
发明人： Kenji Isokawa , Kunio Namiki , Kenji Takahashi
摘要： A bolting bar material consists in weight ratio of 0.05.about.0.2% of C, 0.05.about.0.8% of Si, 0.8.about.2% of Mn, not more than 0.035% of P, not more than 0.030% of S, 0.005.about.0.05% of Nb, 0.01.about.0.05% of Al, 0.005.about.0.025% of N, 0.05.about.0.35% in total of at least one element selected from not more than 0.25% of V, not more than 0.25% of Ti and not more than 0.25% of Zr, and if necessary, 0.05.about.1.5% in total of at least one element selected from 0.05.about.0.5% of Ni, 0.05.about.0.5% of Cr and 0.05.about.0.5% of Mo, and the balance of Fe. In the production of the bolting bar material, the steel having the above composition is heated to 1000.degree..about.1100.degree. C., rolled at a finish rolling temperature of 750.degree..about.950.degree. C. and cooled at a rate of 5.degree..about.50.degree. C./sec on average.
摘要翻译： 螺栓棒材料的重量比为0.05，C差异为0.2％，Si为0.8％，Mn为0.8％，P为0.2％以上，P为0.035％以下，S为0.005％以下，0.05％ 的Nb，0.01差异为0.05％的Al，0.005差异为0.025％的N，0.05差异为选自不超过0.25％的V，不超过0.25％的Ti和不超过0.25的至少一种元素的0.35％ ％的Zr，如果需要，0.05％的差异为至少一种选自0.05％的Ni，0.05％的Cr和0.05％的Mo中的至少一种元素，0.5％的Mo，余量为Fe。 在制造螺栓棒材料时，将具有上述组成的钢加热至1000℃，1100℃，在750℃的精轧温度下轧制，并以5°F的速度冷却 DEG C./sec平均。
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公开(公告)号：US4946645A
公开(公告)日：1990-08-07
申请号：US329822
申请日：1989-03-28
摘要： A steel composition for gears, consisting of: 0.10-0.30% by weight of C; less than 0.15% by weight of Si; no more than 1.5% by weight of Mn; no more than 0.015% by weight of P; no more than 0.005% by weight of S; 0.50-1.50% by weight of Cr; 0.005-0.06% by weight of Pb; and the balance being Fe and inevitably included impurities.
摘要翻译： 用于齿轮的钢组合物，其组成为：0.10-0.30重量％的C; 小于0.15重量％的Si; 不超过1.5重量％的Mn; 不超过0.015重量％的P; 不超过0.005重量％的S; 0.50-1.50重量％的Cr; 0.005-0.06重量％的Pb; 余量为Fe，不可避免地含有杂质。
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公开(公告)号：US5223049A
公开(公告)日：1993-06-29
申请号：US789568
申请日：1991-11-08
申请人： Tatsumi Urita , Kunio Namiki
发明人： Tatsumi Urita , Kunio Namiki
摘要： A steel having such a good machinability that it can be directly cut without being annealed and a good induction hardenability. The steel consists essentially of C: 0.37-0.45%, Si: up to 0.35%, Mn: more than 1.0% - up to 1.5%, B: 0.0005-0.0035%, Ti: 0.01-0.05%, Al: 0.01-0.06% and the balance of Fe, the content of N being up to 0.022 and has a fine structure of ferrite crystal grain size number 6 or more as defined by JIS-G0552. In addition to the above basic composition, the alloy may further contain some optional alloying elements.The material is suitable for manufacturing machine structural parts such as drive shafts of automobiles.
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公开(公告)号：US4838961A
公开(公告)日：1989-06-13
申请号：US179501
申请日：1988-04-08
摘要： A high strength bolt made of a steel having a specifically defined chemical composition, i.e., by weight C: 0.30-0.50%; Si: not more than 0.15%; Mn: not more than 0.40%; Cr: 0.30-1.50%; Mo: 0.10-0.70%; and V: 0.15-0.40%, the balance being Fe and inevitable impurities such as P, S, etc. in trace amount. The manufacturing method therefor is featured in a strictly controlled heat treatment in respect to the temperature range such as: hardening by quenching from 940.degree..+-.10.degree. C. and tempering 575.degree..+-.25.degree. C.
摘要翻译： 由具有特定定义化学组成的钢制成的高强度螺栓，即重量C：0.30-0.50％; Si：不大于0.15％; Mn：不大于0.40％; Cr：0.30-1.50％; Mo：0.10-0.70％; 和V：0.15-0.40％，余量为Fe和痕量的P，S等不可避免的杂质。 其制造方法的特征在于在温度范围内进行严格控制的热处理，例如：从940℃+/- 10℃淬火淬火并回火575℃+/- 25℃。
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公开(公告)号：US4778652A
公开(公告)日：1988-10-18
申请号：US802608
申请日：1985-11-25
摘要： A high strength bolt made of a steel having a specifically defined chemical composition, i.e., by weight C: 0.30-0.50%; Si: not more than 0.15%; Mn: not more than 0.40%; Cr: 0.30-1.50%; Mo: 0.10-0.70%; and V: 0.15-0.40%, the balance being Fe and inevitable impurities such as P, S, etc. in trace amount. The manufacturing method therefor is featured in a strictly controlled heat treatment in respect to the temperature range such as: hardening by quenching from 940.degree..+-.10.degree. C. and tempering 575.degree..+-.25.degree. C.
摘要翻译： 由具有特定定义化学组成的钢制成的高强度螺栓，即重量C：0.30-0.50％; Si：不大于0.15％; Mn：不大于0.40％; Cr：0.30-1.50％; Mo：0.10-0.70％; 和V：0.15-0.40％，余量为Fe和痕量的P，S等不可避免的杂质。 其制造方法的特征在于在温度范围内进行严格控制的热处理，例如：从940℃+/- 10℃淬火淬火并回火575℃+/- 25℃。
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