Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2011, Vol. 32 ›› Issue (10): 1423-1425+1430.DOI: -

• OriginalPaper • Previous Articles     Next Articles

Production process of DP700 steel with early ultra fast cooling

Cai, Xiao-Hui (1); Liu, Xu-Hui (1); Liu, Zhen-Yu (1); Zhang, Zhi-Li (2)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China; (2) Shougang Jingtang United Iron and Steel Co., Ltd., Tangshan 063200, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Cai, X.-H.
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Abstract: The production process of source-saving hot-rolled dual phase (DP) steel on HSM-line with early ultra fast cooling (UFC) was investigated. The cooling process of DP steels with early UFC was proposed after large number of experiments in the laboratory and in steel plant. The results obtained from laboratory and the plant showed that tensile strength is more than 700 MPa, yield ratio is 0.51~0.60 and elongation is 22%~28% for the DP steel produced in steel plant. The proposed production process of DP700 steel with early UFC is feasible with no or less microalloy/alloy elements, which decreases the production cost and improves the welding property.

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