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1.发明授权
公开(公告)号：US4113523A
公开(公告)日：1978-09-12
申请号：US776288
申请日：1977-03-10
申请人： Kuniki Uchida , Kenzi Araki , Hirosi Narita , Shiro Fukunaka , Takao Kurihara
发明人： Kuniki Uchida , Kenzi Araki , Hirosi Narita , Shiro Fukunaka , Takao Kurihara
CPC分类号： C21D8/0273 , C21D8/0473 , C21D1/18 , C21D2211/005 , C21D2211/008 , C21D8/0226 , C21D8/0236 , C21D8/0426
摘要： A high tension Al-killed steel of which the yield point is more increased by the ensuing heat treatment after press-forming than that of the properties in which the tensile strength is above 40 to 80 Kg/mm.sup.2, is made by the following main steps:1. the chemical composition of steel is substantially controlled at the range of 0.04 to 0.12% C, 0.10 to 1.60% Mn, and 0.010 to 0.200% Sol.Al,2. the above steel is hot-rolled with a finishing temperature of more than 800.degree. C and a coiling temperature of less than 630.degree. C,3. after the above steel strip cold-reduced with the ordinary requirements is continuously heated up to 700.degree. to 900.degree. C and then rapidly cooled by a jet of water, said strip is reheated up to 150.degree. to 400.degree. C and held for 2 to 300 seconds at said temperature to partially remain solution carbon in steel.
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2.发明授权Method of making high strength cold reduced steel by continuous annealing process 失效通过连续退火工艺制造高强度还原钢的方法
公开(公告)号：US4066474A
公开(公告)日：1978-01-03
申请号：US701183
申请日：1976-06-30
申请人： Kuniki Uchida , Kenzi Araki , Shiro Fukunaka , Takao Kurihara
发明人： Kuniki Uchida , Kenzi Araki , Shiro Fukunaka , Takao Kurihara
CPC分类号： C21D8/0473 , C21D1/18 , C21D8/0426 , C21D8/0436
摘要： A steel consisting essentially of 0.04 to 0.10% C, 0.04 to 0.20% P, not more than 0.02% S, and [S]% .times. 10 to 0.7% Mn is conventionally hot and cold rolled. It is then subjected to the following continuous annealing:Recrystallization heating step: Ac.sub.1 to 900.degree. C. .times. 10 to 120 sec.;Quenching step: starting temperature of quench: Ac.sub.1 to 900.degree. C.; quenching method: jet stream of water;Tempering quenched steel: 200.degree. to 500.degree. C. .times. 10 to 180 sec.,And then conventional cooling and coiling. The steel has high tensile strength and excellent elongation and weldability characteristics.
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3.发明授权Method of making high strength cold reduced steel by a full continuous annealing process 失效通过全连续退火工艺制造高强度冷轧钢的方法
公开(公告)号：US3936324A
公开(公告)日：1976-02-03
申请号：US558326
申请日：1975-03-14
申请人： Kuniki Uchida , Kenzi Araki , Shiro Fukunaka
发明人： Kuniki Uchida , Kenzi Araki , Shiro Fukunaka
CPC分类号： C21D9/52 , C21D8/0473 , C21D1/18 , C21D1/667
摘要： A steel being substantially made and adjusted within the range of 0.04 to 0.12% C, 0.50 to 2.00% Si, and 0.10 to 1.60% Mn, passed through ordinary hot and cold rolling processes, is subjected to a full continuous annealing process comprising the following steps:1. recrystallization heating step; rapid heating up to the range of 650.degree.C to 900.degree.C at a rate of 200.degree.C/min. and more;2. keeping and soaking step; holding for 10 to 120 sec. at the above heating temperature;3. ordinary cooling step; cooling to room temperature from the holding temperature;4. and then ordinary cooling step;Becomes a utility cold reduced steel having the most suitable mechanical properties required as a safe countermeasure for an automobile and similar vehicles.
摘要翻译： 通过普通的热轧和冷轧方法，在0.04〜0.12％的C，0.50〜2.00％的Si，0.10〜1.60％的Mn的范围内进行大体制造和调整的钢，进行完全连续的退火处理，其包括以下 脚步：
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