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。
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.
出处
《特殊钢》
北大核心
2008年第5期13-15,共3页
Special Steel
关键词
高碳帘线钢
CCT
组织
High Carbon Steel for Tyre Cord Wire, CCT, Structure
