发明名称 |
HEATING METHOD HAVING IMPROVED SURFACE QUALITY |
摘要 |
<p>PURPOSE: A heating method of steel materials for improving surface quality is provided to enhance surface quality after descaling by controlling the operational conditions of a heating furnace according to the content of Cu and Si. CONSTITUTION: A heating method of steel materials for improving surface quality is as follows. In case that the Cu content of steel materials is 0.03-0.2 wt.%, a heating furnace is maintained within 1050-1170°C. In case of 0.2-0.4wt.% of the Cu content, the steel materials are heated in the heating furnace while the temperature and content of Cu and Si satisfy the equation of 460ΔTempeature×[Cu]/[Si]Δ2500. The steel materials are composed of .03-0.5 wt.% of C, 0.03-0.5 wt.% of Si, 0.03-0.4 wt.% of Cu, and the rest of Fe and other impurities.</p> |
申请公布号 |
KR20120075275(A) |
申请公布日期 |
2012.07.06 |
申请号 |
KR20100137341 |
申请日期 |
2010.12.28 |
申请人 |
POSCO |
发明人 |
LEE, SANG YOON;SHIN, WOO GI;RYU, GEUN SOO;SON, IL HEON |
分类号 |
C21D1/00;C22C38/00;C22C38/02;C22C38/16 |
主分类号 |
C21D1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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