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

Special Steel ›› 2008, Vol. 29 ›› Issue (5): 13-15.

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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. 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 Online:2008-10-01 Published:2023-01-04
Contact: Zhao Gang

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. 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;

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。

Abstract

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

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

Wang Chao , Zhao Gang , Cai Guoqing , Cheng Xianzhou , Ouyang Biao , Dong Sumei. Features of Continuous Cooling Transformation (CCT) of High Carbon Steel 72A for Tyre Core Wire[J]. Special Steel, 2008, 29(5): 13-15.

王超, 赵刚, 蔡国庆, 程先舟, 欧阳标, 董素梅. 高碳帘线钢72A连续冷却转变(CCT)的特性[J]. 特殊钢, 2008, 29(5): 13-15.

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

高碳帘线钢72A连续冷却转变(CCT)的特性

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