| 直装加热过程连铸坯应力场分析 |
| |
| 引用本文： | 兰伟,余驰斌,鲍思前,洪霞,周学俊,李具中,胡伟东.直装加热过程连铸坯应力场分析[J].钢铁研究,2011,39(5):11-14. |
| |
| 作者姓名： | 兰伟 余驰斌 鲍思前 洪霞 周学俊 李具中 胡伟东 |
| |
| 作者单位： | 1. 武汉科技大学材料与冶金学院,湖北武汉,430081
2. 武汉钢铁（集团）公司制造部,湖北武汉,430083 |
| |
| 摘 要： | 热轧含Nb低合金Q345C钢在热送工艺中受到应力作用产生表面缺陷,轧制的钢卷中部出现线状和疤状缺陷,分析发现缺陷卷的入炉温度集中在600℃以上。裂纹产生的主要原因是连铸坯热装加热过程中受到热应力和相变应力的综合作用,当铸坯的抗拉强度和塑性不足以抵抗拉应力时,其表面就会开裂。利用计算机模拟与现场实验相结合的方法研究连铸坯...
|
| 关 键 词： | 热装裂纹 热应力 有限元模拟 组织应力 |
Analysis of stress field of billet during its heating in the CC-DHCR process |
| |
| LAN Wei,YU Chi-bin,BAO Si-qian,HONG Xia,ZHOU Xue-jun,LI Ju-zhong,HU Wei-dong.Analysis of stress field of billet during its heating in the CC-DHCR process[J].Research on Iron and Steel,2011,39(5):11-14. |
| |
| Authors: | LAN Wei YU Chi-bin BAO Si-qian HONG Xia ZHOU Xue-jun LI Ju-zhong HU Wei-dong |
| |
| Affiliation: | LAN Wei1,YU Chi-bin1,BAO Si-qian1,HONG Xia1,ZHOU Xue-jun2,LI Ju-zhong2,HU Wei-dong2(1.College of Material Science and Metallurgical Engineering,Wuhan University of Science and Technology,Wuhan 430081,China,2.Manufacturing Department,Wuhan Iron and Steel Co.Ltd.,Wuhan 430083,China) |
| |
| Abstract: | In the hot rolling process of low alloy Nb-steel Q345C,surface defects were usually found in the middle part of strip coil in forms of linear and scar defects.Practice indicated that the defects were mainly formed in hot charging temperature over 600℃ in the CC-DHCR process.The crack was mainly caused due to the combined effects of heating stress and transformation stress during heating.When the stretching stress of billet surface was over the strength limit the crack can be formed.By using computer simulation and site experiment,the stress distribution in the CC-DHCR process was studied,the temperature field of hot-charged billet were analyzed with finite element simulation software,and the thermoplasticity and high temperature strength of Q345C steel were obtained. |
| |
| Keywords: | hot charging crack heating stress finite element simulation transformation stress |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
