40Cr热轧棒线材的生产实践

Shengming ZENG,Youhong HU,Changtao YANG,Longfei YANG,Changyi GAO

Sichuan Metallurgy（2017）

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Abstract

水钢采用100t转炉—LF炉精炼—150mm×150mm方坯连铸—高速线材轧制或棒材轧制的工艺流程生产出了φ10～12mm40Cr盘条和φ20～22mm40Cr圆钢.盘条和圆钢的钢质洁净,金相组织为铁素体+珠光体,性能满足《合金结构钢》(GB/T3077-2015)标准要求.盘条的拉伸性能:屈服强度ReL=914～1013MPa,抗拉强度Rm=1033～1090MPa,延伸率A=13.4％～18.8％,面缩率Z=55.6％～61.9％.圆钢的拉伸性能:屈服强度ReL=880～1000MPa,抗拉强度Rm=985～1070MPa,延伸率A=13.2％～16.7％,面缩率Z=52.8％～58.9％.

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