发明名称 Steel for use as material of cold-rolled steel sheet.
摘要 <p>A steel annealable at low temperature and suitable for use as the material of cold-rolled steel sheet having an excellent formability consists essentially, by weight, of not greater than 0.005% of C, not greater than 0.5% of Mn, not greater than 0.1% of P, not greater than 0.005% of N, 0.016 to 0.035% of O, with the balance being Fe and inevitable impurities, the O and at least a part of the Mn existing in the form of fine oxides dispersed substantially uniformly which oxide brings about a structure which imparts the good formability to the steel. A steel sheet may be produced by a method comprising the steps of forming a steel slab from the above-mentioned components by continuous casting, subjecting the steel slab to hot rolling to form a steel sheet, subjecting the hot-rolled steel sheet to cold rolling after pickling, and subjecting the cold-rolled steel sheet to continuous annealing at a low temperature of from 600 to 770 DEG C or to box annealing at a low temperature of from 550 to 680 DEG C.</p>
申请公布号 EP0119088(A1) 申请公布日期 1984.09.19
申请号 EP19840301646 申请日期 1984.03.12
申请人 NIPPON STEEL CORPORATION 发明人 KOYAMA, KAZUO C/O KIMITSUSEITETSUSHO;HAMAMOTO, YASUO C/O KIMITSUSEITETSUSHO;KATOH, HIROSHI C/O KIMITSUSEITETSUSHO;TOYOTA, HIROMI C/O KIMITSUSEITETSUSHO
分类号 C21D8/04;C21D9/48;C22C38/00;C22C38/04;C22C38/12;(IPC1-7):22C38/12;21D8/04;22C38/00 主分类号 C21D8/04
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