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| 客运专线用100m钢轨矫直断裂原因分析 | |
| 引用本文： | 任安超,吉玉,周桂峰,袁泽喜,韩斌,周剑华.客运专线用100m钢轨矫直断裂原因分析[J].钢铁,2011,46(1):92-96. |
| 作者姓名： | 任安超 吉玉 周桂峰 袁泽喜 韩斌 周剑华 |
| 作者单位： | 1. 武汉科技大学材料与冶金学院,湖北,武汉,430081;武汉钢铁(集团)公司研究院,湖北,武汉,430080 2. 武汉钢铁(集团)公司研究院,湖北,武汉,430080 3. 武汉科技大学材料与冶金学院,湖北,武汉,430081 |
| 基金项目： | 武汉市科技计划资助项目(20061002085) |
| 摘 要： | 客运专线用100m 60kg/m重轨在焊轨厂拼焊后,当四面矫直时发生断裂现象.采用光学显微镜及扫描电镜(SEM)等方法对钢轨矫直时断裂原因进行了分析和研究.结果表明:钢轨断裂是由于距钢轨端部约100mm轨底边缘处存在凸台缺陷,此凸台在钢轨拼焊后进行除瘤时除瘤刀将其铲平,致使钢轨产生冷裂纹,进而在矫直时断裂.通过控制万能... |
| 关 键 词： | 60kg/m重轨 扣头 矫直 断裂 |
Analysis of Straightening Fracture About 100 m Rail for Passenger Dedicated Line |
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| REN An-chao,JI Yu,ZHOU Gui-feng,YUAN Ze-xi,HAN Bin,ZHOU Jian-hua.Analysis of Straightening Fracture About 100 m Rail for Passenger Dedicated Line[J].Iron & Steel,2011,46(1):92-96. | |
| Authors: | REN An-chao JI Yu ZHOU Gui-feng YUAN Ze-xi HAN Bin ZHOU Jian-hua |
| Affiliation: | REN An-chao1,2,JI Yu2,ZHOU Gui-feng1,YUAN Ze-xi1,HAN Bin2,ZHOU Jian-hua2(1.Institute of Material Science and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China,2.Research and Development Center of Wuhan Iron and Steel(Group) Corp.,Wuhan 430080,China) |
| Abstract: | Rails of passenger line,which were welded together in the rail welding plant,were fractured during straightening.Fracture causes are analyzed by optical microscope and SEM.The results show that boss defect existed at the end of the edge of rail is the main reason,and cold crack is caused when the boss is shoveled smooth by removal-tumor knife,rail is broken off at last.Rails are kept straight when rails are rolled in finishing by means of controlling roll diameter difference and rolling line height and so o... |
| Keywords: | 60kg/m heavy rail warp straightening fracture |
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