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

王超; 赵刚; 蔡国庆; 程先舟; 欧阳标; 董素梅

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

更新时间：2026-01-21

- Features of Continuous Cooling Transformation (CCT) of High Carbon Steel 72A for Tyre Core Wire
- Special Steel Vol. 29, Issue 5, Pages: 13-15(2008)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：31 March 2008，
  
  Online First：04 January 2023，
  
  Published：04 January 2008
- 稿件说明：
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王超, 赵刚, 蔡国庆, et al. Features of Continuous Cooling Transformation (CCT) of High Carbon Steel 72A for Tyre Core Wire[J]. Special Steel, 2008, 29(5): 13-15.
DOI：

王超, 赵刚, 蔡国庆, et al. Features of Continuous Cooling Transformation (CCT) of High Carbon Steel 72A for Tyre Core Wire[J]. Special Steel, 2008, 29(5): 13-15. DOI：

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。

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.

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