东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (4): 525-528.DOI: -

• 论著 • 上一篇    下一篇

控轧控冷对低碳铆螺钢力学性能的影响

李壮;吴迪;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室 辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-04-15 发布日期:2013-06-22
  • 通讯作者: Li, Z.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50334010);;

Effect of controlled rolling/cooling on mechanical properties of low-carbon cold heading steel

Li, Zhuang (1); Wu, Di (1)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-04-15 Published:2013-06-22
  • Contact: Li, Z.
  • About author:-
  • Supported by:
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摘要： 对低碳铆螺钢采用两次控轧控冷试验,结果表明,铁素体晶粒尺寸比珠光体形态对低碳铆螺钢力学性能的影响要大.低温轧制较常规轧制后控冷可以获得更好的力学性能.在奥氏体化工艺参数非常合理的条件下,通过控轧控冷使铁素体晶粒细化的同时,避免魏氏组织产生,能够获得最佳的力学性能.采用控轧控冷,有可能实现以低碳代替中碳免热处理490 MPa级铆螺钢的实际生产.

关键词: 控轧控冷, 奥氏体化, 铁素体晶粒尺寸, 珠光体, 力学性能

Abstract: Double experiments of controlled rolling/cooling process were carried out on a lab mill and the results showed that the effect of ferrite grain size on the mechanical properties is greater than that of pearlite morphology for the low-carbon cold heading steel. The mechanical properties of the specimens rolled at low temperature are better than rolled conventionally. Best mechanical properties could be obtained by the controlled rolling/cooling process for ferrite grain refining and avoid the formation of Widmastatten structure under conditions that the austenitizing parameters are set very reasonably. In such a way it might be expected to substitute low-carbon for medium-carbon in production of 490 MPa grade cold heading steel without heat-treatment.

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