首页> 外国专利> PROCESS FOR PRODUCING STEEL FOR HIGH-CARBON STEEL WIRE MATERIAL WITH EXCELLENT DRAWABILITY AND FATIGUE CHARACTERISTICS

PROCESS FOR PRODUCING STEEL FOR HIGH-CARBON STEEL WIRE MATERIAL WITH EXCELLENT DRAWABILITY AND FATIGUE CHARACTERISTICS

机译:具有出色的可延展性和疲劳特性的高碳钢线材的生产工艺

摘要

The present invention provides a method suitable for manufacturing a steel material for obtaining a steel wire rod with decreased amount of hard nonmetallic inclusions and improved drawability and fatigue property by adequately controlling the conditions of secondary refining and manufacturing conditions in a converter. Converter blowing is performed by taking molten iron, cold iron, and steel scrap as main raw materials to be charged into a converter, the ratio of these components based on all the main raw materials being such that the molten iron takes 96 to 100% (means wt. %, same hereinbelow), the cold iron takes 4% or less, and the steel scrap takes 2% or less, and by setting an average P concentration in all the main raw materials to 0.02% or less, and operations are carried out such that a flow rate of gas for stirring molten steel during secondary refining after completion of the converter blowing is set to 0.0005 Nm3/min or more to 0.004 Nm3/min or less per 1 t of molten steel, and then a flow rate of Ar used to purge the inside of a tundish in continuous casting is set to 0.04 Nm3/min or more to 0.10 Nm3/min or less per 1 t of molten steel within the tundish.
机译:本发明提供一种适于制造钢材的方法,该方法通过适当地控制转炉中的二次精炼条件和制造条件来获得具有减少的硬非金属夹杂物的量以及改善的可拉伸性和疲劳性能的钢丝。转炉吹炼是通过将铁水,冷铁和废钢作为主要原料装入转炉来进行的,这些成分在所有主要原料中的比例为铁水占96%至100%(表示重量%,以下相同),冷铁占4%以下,废钢占2%以下,将所有主要原料中的平均P浓度设定为0.02%以下,操作为将转炉吹出结束后的二次精炼中的用于搅拌钢水的气体的流量设定为每1t钢水为0.0005Nm3 / min以上至0.004Nm3 / min以下,然后每1t中间包内的钢水,将用于连续浇铸的中间包内的Ar的吹扫量设定为0.04Nm3 / min以上0.10Nm3 / min以下。

著录项

  • 公开/公告号KR101022068B1

    专利类型

  • 公开/公告日2011-03-17

    原文格式PDF

  • 申请/专利权人

    申请/专利号KR20087023845

  • 发明设计人 기무라 세이;미무라 츠요시;

    申请日2007-03-26

  • 分类号C21C5/28;C21C7/06;C22C38;

  • 国家 KR

  • 入库时间 2022-08-21 17:50:29

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