百米U75V钢轨矫直前冷却过程温度场的有限元分析

特殊钢 ›› 2009, Vol. 30 ›› Issue (1): 1-3.

• 试验研究 • 下一篇

百米U75V钢轨矫直前冷却过程温度场的有限元分析

李革¹，崔海燕¹，陈林²

1内蒙古科技大学,1建筑与土木工程学院
2材料与冶金学院，包头014010

收稿日期:2008-07-21 出版日期:2009-02-01 发布日期:2022-11-28
作者简介:李革( 1967-),男，硕士，教授，系主任，1994年西安交通大学毕业，计算力学、成型过程的数值模拟等：
基金资助:
包头市重大科技攻关资助项目(2006Z1006）

Finite Element Analysis on 100-Meter Rail Temperature Field of U75V Steel during Cooling before Straightening

Li Ge¹ , Cui Haiyan¹， Chen Lin²

1 Arcliitecture and Civil Engineering School
2 Material and Metallurgy School, Inner Mongolia University of Science and Technology, Baotou 014010

Received:2008-07-21 Published:2009-02-01 Online:2022-11-28

摘要/Abstract

摘要： 通过研究U75V钢轨冷却过程的热边界条件,采用三维瞬态非线性有限元法计算了百米钢轨矫直前845～150℃冷却过程的温度场。结果表明,在冷却过程中的钢轨横截面不同位置的温度下降速率不同,在冷却初期(200～2 000s),每条冷却温度线都出现一个温度降低缓和的"平台"阶段,如轨底边部冷却速度最快,开始相变时间最早;在冷却2 500～3 000s时,轨头、轨腰、轨底中心的温度迅速下降,轨头与轨底边部的温差约5℃,在冷却5 000～7 000s时,各部位温差趋于一致;计算温度值和现场实测值差别小于50℃。

关键词: 百米U75V钢轨, 矫直前弯曲度, 瞬态温度场, 有限元法

Abstract: With analyzing the thermal boundan conditions in cooling process of U75 V steel rail, the temperature field of 100 in steel rail during cooling process at 845 ~ 150 ℃ before straightening has been calculated by using three-dimensional non-linear finite element method. Results showed that during cooling process the temperature decrease rate was different at different position of cross- section of rail, in initial cooling period (200 ~2 000 s) a "platform'' period with temperature decreasing slow for each curve occurred, for instance the cooling rate was fastest at edge of rail bottom at which the phase transition was earliest: in cooling for 2 500 ~ 3 000 s, the temperature at rail head, rail waist and median of rail bottom decreased very quickly and the temperature difference between rail head and edge of rail bottom was about 5℃ , in cooling for 5 000 ~ 7 000 s the temperature of each position tended to show no difference; the difference between calculated temperature and measured temperature at situ was less than 50℃.

Key words: 100 m 175V Steel Rail, Bending before Straightening, Transient Temperature Field, FEM

李革, 崔海燕, 陈林. 百米U75V钢轨矫直前冷却过程温度场的有限元分析[J]. 特殊钢, 2009, 30(1): 1-3.

Li Ge , Cui Haiyan, Chen Lin. Finite Element Analysis on 100-Meter Rail Temperature Field of U75V Steel during Cooling before Straightening[J]. Special Steel, 2009, 30(1): 1-3.

[1]	郭志强, 杨杰, 任学平. 轧制参数对板带热轧温度分布的影响[J]. 特殊钢, 2019, 40(5): 1-6.
[2]	郭喜平, 崔立刚, 张波. 基于ANSYS Workbench的百米U75V重轨热结构耦合分析[J]. 特殊钢, 2018, 39(5): 5-8.
[3]	陈林, 王慧军, 陈昆宇, 刘志敏. 基于有限元法计算重轨钢淬火过程的换热系数[J]. 特殊钢, 2016, 37(4): 13-17.
[4]	董丽丽, 邢淑清, 姜晓艳, 麻永林. 张力对冷轧304奥氏体不锈钢薄板板形影响的数值模拟[J]. 特殊钢, 2012, 33(3): 4-7.
[5]	李浩进, 杭乃勤, 孙志亮, 喻威. 钢板桩轧制过程充型模拟及轧制力有限元分析[J]. 特殊钢, 2012, 33(1): 5-8.
[6]	刘升, 王伯文, 林希峰. 基于有限元模拟的外方内圆管拉拔成形工艺开发[J]. 特殊钢, 2011, 32(3): 44-47.
[7]	喻威, 刘升, 杭乃勤, 李浩进, 孙志亮. 轧制变形对重轨脱碳深度的影响[J]. 特殊钢, 2011, 32(1): 30-33.
[8]	李革, 贾宝华, 姜旭. 百米U75V钢轨矫直前冷却过程弯曲变形的有限元分析[J]. 特殊钢, 2010, 31(3): 14-15.
[9]	李传瑞, 王立涛, 葛仁余, 常崇志, 王建钢, 薛越. CSP连轧过程温度和轧制力的有限元分析[J]. 特殊钢, 2008, 29(4): 5-7.
[10]	李传瑞, 王宝峰, 麻永林. CSP连轧过程金属变形的热力耦合模拟分析[J]. 特殊钢, 2005, 26(6): 29-31.

百米U75V钢轨矫直前冷却过程温度场的有限元分析

Finite Element Analysis on 100-Meter Rail Temperature Field of U75V Steel during Cooling before Straightening

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 10

编辑推荐

Metrics

本文评价