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MANUFACTURING METHOD OF WIDE AND THICK PLATE HAVING EXCELLENT STRENGTH AND TOUGHNESS FOR MAKING LINEPIPE

机译：具有出色的强度和韧性的生产线管的宽厚板的制造方法

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摘要

line pipe of the present invention is used steel pipes for use in steel manufacturing method for a wide humul about that, more particularly, to low plate deformation after manufacture can be reduced while the constraints on the equipment on the production process to increase the size of the steel sheet can be produced. ; the method for manufacturing the steel sheet of the present invention the wide humul is, C: 0.04 ~ 0.1%, Si: 0.1 ~ 0.4%, Mn: 1.3 ~ 1.8%, Sol. Al: 0.01 ~ 0.05%, Ti: 0.005 ~ 0.02%, Nb: 0.02 ~ 0.06%, V: less than 0.1%, Mo: less than 0.1%, P: less than 0.02%, S: not more than 0.005%, balance Fe and other unavoidable heating in the range of 1050 ~ 1150 by targeting a steel slab consisting of impurity contained in; Reduction ratio of austenite at a temperature below the recrystallization temperature knight 70-80% in the finish rolling step of producing the steel sheet; Step of cooling the steel sheet in the range of the cooling rate 5 ~ 8 / sec; And to step 450 to cooling stop at a temperature of 550 ;. Comprises a

机译：本发明的管线管是用于钢管的钢管，其制造方法广泛，尤其是能够降低制造后的板变形低，同时对生产工艺的设备的制约增加了尺寸。可以生产钢板。 ;本发明的钢板的制造方法是：C：0.04〜0.1％，Si：0.1〜0.4％，Mn：1.3〜1.8％，Sol。 Al：0.01〜0.05％，Ti：0.005〜0.02％，Nb：0.02〜0.06％，V：小于0.1％，Mo：小于0.1％，P：小于0.02％，S：不大于0.005％，以含有杂质的钢板为目标，在1050〜1150范围内平衡Fe和其他不可避免的加热。在钢板的精轧工序中，在低于再结晶温度骑士70-80％的温度下的奥氏体的还原率。冷却步骤在冷却速度5〜8 /秒的范围内的钢板;并至步骤450使冷却停止于550℃。包含一个

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公开/公告号KR20060072196A

专利类型
公开/公告日2006-06-28

原文格式PDF
申请/专利权人 POSCO;
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申请/专利号KR20040110586
发明设计人 AHN SEONG SOO;CHO SANG HYUN;
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申请日2004-12-22
分类号C21D8/02;
国家 KR
入库时间 2022-08-21 21:25:23

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