ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2008, Vol. 29 ›› Issue (5): 13-15.

• 试验研究 • 上一篇    下一篇

高碳帘线钢72A连续冷却转变(CCT)的特性

王 超1,赵 刚1,蔡国庆1,程先舟2, 欧阳标2,董素梅2   

  1. 1. 武汉科技大学材料与冶金学院,武汉 430081;
    2. 武汉钢铁集团公司,武汉 430083;
  • 收稿日期:2008-03-31 出版日期:2008-10-01 发布日期:2023-01-04
  • 通讯作者: 赵刚
  • 作者简介:王超(1981-),男,硕士生,轧钢过程组织性能的变化和计算机模拟控制。

Features of Continuous Cooling Transformation (CCT) of High Carbon Steel 72A for Tyre Core Wire

Wang Chao1 , Zhao Gang1 , Cai Guoqing1 , Cheng Xianzhou2 , Ouyang  Biao2 , Dong  Sumei2   

  1. 1. School of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081;
    2. Wuhan Iron and Steel Co,Wuhan 430083;
  • Received:2008-03-31 Published:2008-10-01 Online:2023-01-04
  • Contact: Zhao Gang

摘要: 采用热膨胀法,通过THERMECMASTOR-Z热模拟实验机测试了高碳帘线钢72A(%:0.72C、0.53Mn、0.22Si)的连续冷却转变(CCT)曲线,并分析了开始冷却温度(840~930℃)和冷却速度(0.8~22℃/s)对钢组织的影响。结果表明,相同开始冷却温度条件下,冷却速度越快,相变时间越短;相同冷速条件下,随着开始冷却温度的升高,到达相变开始转变温度的时间和到达转变终了温度的时间会延后;提高开始冷却温度,珠光体的百分含量增加,珠光体片层间距减少,有利于提高线材力学性能。

关键词: 高碳帘线钢, CCT, 组织

Abstract: The continuous cooling transformation (CCT) curves of high carbon steel 72A (0.72C,0.53Mn,0.22Si) for tyre core wire has been measured by THERMECMASTOR-Z thermal simulation machine using thermal dilatation method,and the effect of start cooling temperature(840~930℃)and cooling rate(0.8~22 ℃/s)on structure of steel has been analyzed. Results showed that at same start cooling temperature,with increasing cooling rate,the phase transformation period decreased;at same cooling rate,with increasing start cooling temperature,the time reaching the start and end of phase transformation increased; Increasing start cooling temperature was available to increase pearlite percentage content and decrease interlamellar spacing and enhance mechanical properties of wire.

Key words: High Carbon Steel for Tyre Cord Wire, CCT, Structure