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1. 发明授权

US5279683A Method of producing high-strength cold-rolled steel sheet suitable for working 失效
标题翻译：生产适用于加工的高强度冷轧钢板的方法
公开(公告)号：US5279683A
公开(公告)日：1994-01-18
申请号：US891685
申请日：1992-05-29
申请人： Susumu Okada , Tojiro Ikeda , Susumu Satoh , Hideo Abe , Jun-ichi Mano , Norio Ohta
发明人： Susumu Okada , Tojiro Ikeda , Susumu Satoh , Hideo Abe , Jun-ichi Mano , Norio Ohta
IPC分类号： C21D8/04
CPC分类号： C21D8/0431 , C21D8/0436
摘要： A method of producing a high-strength cold-rolled steel sheet suitable for working uses which utilizes a steel material having the following composition: not more than 0.006 wt % of C, not more than 0.5 wt % of Si, not more than 2.0 wt % of Mn, and not less than 0.01 wt % but not more than 0.10 wt % of Ti, the Ti, C and N contents being determined to meet the condition of Ti>(48/12) C wt %+(48/14) N wt %, the steel also consisting essentially of not less than 0.0010 wt % but not more than 0.0100 wt % of Nb, not less than 0.0002 wt % but not more than 0.0020 wt % of B, not less than 0.03 wt % but not more than 0.20 wt % of P, not more than 0.03 wt % of S, not less than 0.010 wt % but not more than 0.100 wt % of Al, not more than 0.008 wt % of N, not more than 0.0045 wt % of O, and the balance substantially Fe and incidental inclusions. The steel material is cast and hot-rolled and then subjected to a cold rolling conducted at a sheet temperature not higher than 300.degree. C. under such a condition that the sum of the rolling reductions of passes which meet the following condition between said sheet temperature (T .degree.C.) and the strain rate .epsilon. (S-1) is 50% or greater:T.times..epsilon..gtoreq.50,000.degree. C. S.sup.-1The steel sheet is then continuously annealed or galvannealed.
摘要翻译：一种适用于使用具有以下组成的钢材的工作用高强度冷轧钢板的方法：不超过0.006重量％的C，不大于0.5重量％的Si，不大于2.0重量％ Mn，不小于0.01重量％，但不超过0.10重量％，Ti，C和N含量被确定为满足Ti>（48/12）C wt％+（48/14）的条件）N重量％时，钢还基本上由不少于0.0010重量％但不大于0.0100重量％的Nb组成，不小于0.0002重量％但不大于0.0020重量％的B，不小于0.03重量％，但是不超过0.20重量％的P，不大于0.03重量％的S，不小于Al的0.010重量％但不大于0.100重量％，不大于0.008重量％的N，不大于0.0045重量％的 O，余量基本上是Fe和附带的夹杂物。将钢材进行铸造和热轧，然后在不高于300℃的板材温度下进行冷轧，条件是在所述板温度之间满足以下条件的轧制轧制量的总和（T°C），应变速率（ε）（S-1）为50％以上：T *（ε）> = 50,000℃S-1然后对钢板进行连续退火或合金化热浸镀锌。

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