| 钢轨闪光焊接后轨腰原始裂纹的特征 |
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| 引用本文： | 李大东,余腾义.钢轨闪光焊接后轨腰原始裂纹的特征[J].理化检验(物理分册),2008,44(4):175-179. |
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| 作者姓名： | 李大东 余腾义 |
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| 作者单位： | 攀枝花钢铁有限责任公司,钢铁研究院,攀枝花,617000 |
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| 摘 要： | 在U75V钢轨的端部轨腰处采用线切割和高频疲劳预制轨腰裂纹，并进行闪光焊接，在放置7a（天）后对焊接接头试样的裂纹表面形貌和脱碳现象进行了分析和研究。研究表明，预制轨腰裂纹与其他轨腰焊接水平裂纹的宏观和微观区别，为今后焊接接头处的轨腰水平裂纹质量检验和判断提供了依据。
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| 关 键 词： | 钢轨 焊接 裂纹 |
| 文章编号： | 1001-4012(2008)04-0175-05 |
| 修稿时间： | 2007年5月18日 |
ORIGINAL CRACK CHARACTER ON RAIL MIDDLE AFTER FLASH WELDING JOINT |
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| LI Da-dong,YU Teng-yi.ORIGINAL CRACK CHARACTER ON RAIL MIDDLE AFTER FLASH WELDING JOINT[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2008,44(4):175-179. |
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| Authors: | LI Da-dong YU Teng-yi |
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| Affiliation: | (The Research Institute of Panzhihua Iron and Steel Ltd , Panzhihua 617000, China) |
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| Abstract: | The cracking was made on web of U75V rail end by electric spark and high frequency fatigue, the surface of crack macrostructure and decarboniztion was tested after flash welding, it point out that artificial crack macrostructure and microstructure differentiate of other level crack on web of rail after flash welding. It offer gist for quality test and verdict of level crack on web of rail after flash welding joint. |
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| Keywords: | Rail Welding Crack |
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