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91. 发明授权

US4708748A Method of making cold rolled dual-phase structure steel sheet having an excellent deep drawability 失效
标题翻译：制造具有优异深冲性的冷轧双相结构钢板的方法
公开(公告)号：US4708748A
公开(公告)日：1987-11-24
申请号：US881915
申请日：1986-07-03
申请人： Susumu Satoh , Hideo Suzuki , Takashi Obara , Minoru Nishida , Osamu Hashimoto
发明人： Susumu Satoh , Hideo Suzuki , Takashi Obara , Minoru Nishida , Osamu Hashimoto
IPC分类号： C22C38/00 , C21D8/02 , C21D8/04 , C21D9/48 , C21D9/52 , C22C38/06 , C22C38/12 , C22C38/32
CPC分类号： C22C38/06 , C21D8/0473 , C22C38/12 , C21D2211/00 , C21D2211/005 , C21D8/0426 , C21D9/52
摘要： A cold rolled dual-phase structure steel sheet having an excellent deep drawability is disclosed, which consists of ferrite phase and low temperature transformation product phase and comprises 0.001-0.008 wt % of C, not more than 1.0 wt % of Si, 0.05-1.8 wt % of Mn, not more than 0.15 wt % of P, 0.01-0.10 wt % of Al, 0.002-0.050 wt % of Nb and 0.0005-0.0050 wt % of B provided that the value of Nb(%)+10B(%) is in a range of 0.010-0.080%, and, if necessary, 0.05-1.00 wt % of Cr and the balance being substantially Fe with inevitable impurities. This steel sheet is manufactured by hot and cold rolling a steel slab with the above chemical composition and continuously annealing the resulting steel sheet in such a manner than the steel sheet is heated and soaked at a temperature from .alpha..fwdarw..gamma. transformation point to 1,000.degree. C. and then cooled at an average cooling rate of not less than 0.5.degree. C./sec but less than 20.degree. C./sec in a temperature range of from the soaking temperature to 750.degree. C., and subsequently at an average cooling rate of not less than 20.degree. C./sec in a temperature range of from 750.degree. C. to not more than 300.degree. C.

92. 发明授权

US4576656A Method of producing cold rolled steel sheets for deep drawing 失效
标题翻译：深冲压冷轧钢板的制造方法
公开(公告)号：US4576656A
公开(公告)日：1986-03-18
申请号：US768927
申请日：1985-08-26
申请人： Susumu Satoh , Takashi Obara , Minoru Nishida
发明人： Susumu Satoh , Takashi Obara , Minoru Nishida
IPC分类号： C22C38/00 , C21D8/02 , C21D8/04 , C21D9/48 , C22C38/14
CPC分类号： C21D8/0426 , C21D8/041
摘要： The present invention relates to a method of producing a cold rolled steel sheet for deep drawing. In order to improve the deep drawability (r-value), ductility (yield strength and elongation El) and the like of cold rolled sheet of ultra-low carbon aluminum killed steel, the chemical composition (% by weight) of the steel is adjusted such that the steel contains C: .ltoreq.0.015%, Mn: .ltoreq.0.4%, P: .ltoreq.0.03%, sol. Al: 0.005-0.100%, N: .ltoreq.0.010%, Ti (exclusive of Ti present in the form of oxide): in an amount satisfying a formula of ##EQU1## the hot rolling of the steel slab is effected at a soaking temperature lower than 1,100.degree. C. and at a finishing temperature of 600.degree.-780.degree. C. As illustrated in the drawings, a low temperature rolling can be carried out, and the resulting cold rolled steel sheet is excellent in the deep drawability and ductility and further excellent in the treatable property of the surface and in the surface property. Therefore, the cold rolled steel sheet is particularly suitable for the production of automotive exterior plate.
摘要翻译： PCT No.PCT / JP83 / 00334 Sec。 371日期1984年3月15日 102（e）日期1984年3月15日PCT提交1983年10月7日PCT公布。公开号WO84 / 01585 1984年4月26日。深拉深冷轧钢板的制造方法技术领域本发明涉及一种深拉深冷轧钢板的制造方法。为了提高超低碳铝杀死钢的冷轧板的深冲性（r值），延展性（屈服强度和伸长率E1）等，调整钢的化学成分（重量％）使得钢含有C：0.015％，Mn：0.4％，P：0.03％，溶胶。 Al：0.005-0.100％，N：<= 0.010％，Ti（以氧化物形式存在的Ti除外）：满足公式“IMAGE”的钢的平均热轧是在均热温度低于1100℃，最终温度为600〜-780℃。如图所示，可以进行低温轧制，所得到的冷轧钢板的深冲性和延展性优异并且表面的可处理性能和表面性能也更优异。因此，冷轧钢板特别适用于制造汽车外板。

93. 发明授权

US4206004A Process of pretreating cold-rolled steel sheet for annealing 失效
标题翻译：退火冷轧钢板预处理工艺
公开(公告)号：US4206004A
公开(公告)日：1980-06-03
申请号：US578938
申请日：1975-05-19
申请人： Nobuo Ohashi , Motoyuki Konishi , Minoru Nishida , Yukio Inokuchi
发明人： Nobuo Ohashi , Motoyuki Konishi , Minoru Nishida , Yukio Inokuchi
IPC分类号： C21D1/70 , C21D1/74 , C23C8/04 , C23C3/00
CPC分类号： C21D1/74 , C21D1/70 , C23C8/04 , Y10T428/31678
摘要： A pretreatment of cold-rolled steel sheet for annealing so as to suppress graphite formation on the surface thereof and nitrogenization during the annealing for recrystallization, by causing an effective amount of sulfur, aluminum, tin, arsenic, lead, antimony, bismuth, selenium, and/or tellurium to exist on the steel sheet surface.
摘要翻译：通过使硫，铝，锡，砷，铅，锑，铋，硒等有效量进行退火的冷轧钢板的预处理，以抑制其表面的石墨形成和再结晶退火中的氮化，和/或碲存在于钢板表面上。

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