首页> 外国专利> MANUFACTURING METHOD OF ULTRALOW-CARBON COLD-ROLLED STEEL PLATE AND ULTRALOW-CARBON COLD-ROLLED STEEL PLATE MANUFACTURED BY SAME

MANUFACTURING METHOD OF ULTRALOW-CARBON COLD-ROLLED STEEL PLATE AND ULTRALOW-CARBON COLD-ROLLED STEEL PLATE MANUFACTURED BY SAME

机译：超低碳冷轧钢板的制造方法及超低碳冷轧钢板的制造方法

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摘要

The present invention provides a manufacturing method of an ultralow-carbon cold-rolled steel plate, and an ultralow-carbon cold-rolled steel plate manufactured by the same. According to an embodiment of the present invention, the manufacturing method of an ultralow-carbon cold-rolled steel plate comprises: a step of reheating a steel slab containing higher than 0 and lower than or equal to 0.005 wt% of carbon (C), 0.03-0.2 wt% of silicon (Si), 0.1-0.6 wt% of manganese (Mn), 0.01-0.08 wt% of phosphorus (P), higher than 0 and lower than or equal to 0.01 wt% of sulfur (S), 0.02-0.06 wt% of aluminum (Al), 0.005-0.04 wt% of niobium (Nb), 0.001-0.004 wt% of nitrogen (N), 0.0005-0.002 wt% of boron (B), and the remainder consisting of iron (Fe) and inevitable impurities; a step of hot-rolling the steel slab at a finishing rolling temperature higher than or equal to an Ar3 transformation point, and rolling the steel slab to manufacture a hot-rolled coil; a step of uncoiling the hot-rolled coil, and then cold-rolling the hot-rolled coil to manufacture a cold-rolled coil; a step of annealing the cold-rolled coil at a temperature of 820-860C; and a step of over-aging the annealed cold-rolled coil at a temperature of 480-520C.;COPYRIGHT KIPO 2018

机译：本发明提供一种超低碳冷轧钢板的制造方法以及由其制造的超低碳冷轧钢板。根据本发明的一个实施方式，一种超低碳冷轧钢板的制造方法包括：重新加热包含大于或等于0.005重量％的碳（C）的钢坯的步骤， 0.03-0.2 wt％的硅（Si），0.1-0.6 wt％的锰（Mn），0.01-0.08 wt％的磷（P），大于0且小于或等于0.01 wt％的硫（S），0.02-0.06 wt％的铝（Al），0.005-0.04 wt％的铌（Nb），0.001-0.004 wt％的氮（N），0.0005-0.002 wt％的硼（B），其余部分由铁（Fe）和不可避免的杂质;在终轧温度高于或等于Ar 3相变点的条件下对钢坯进行热轧，然后对该钢坯进行轧制以制造热轧卷的步骤。开卷热轧卷，然后冷轧该热轧卷以制造冷轧卷的步骤;在820-860℃的温度下对冷轧卷进行退火的步骤;以及在480-520C的温度下对退火的冷轧卷进行过时效处理的步骤; COPYRIGHT KIPO 2018

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公开/公告号KR20180061449A

专利类型
公开/公告日2018-06-08

原文格式PDF
申请/专利权人 HYUNDAI STEEL COMPANY;
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申请/专利号KR20160159273
发明设计人 LEE SEUNG CHULKR;KANG CHUN KUKR;
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申请日2016-11-28
分类号C22C38;C21D8/02;C22C38/02;C22C38/04;C22C38/06;C22C38/12;
国家 KR
入库时间 2022-08-21 12:39:55

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