钢轨闪光焊焊接断裂分析 |
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引用本文: | 刘锦燕,李大东,张春兰. 钢轨闪光焊焊接断裂分析[J]. 电焊机, 2004, 34(4): 8-9 |
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作者姓名: | 刘锦燕 李大东 张春兰 |
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作者单位: | 攀枝花钢铁有限责任公司,钢铁研究院,四川,攀枝花,617001;攀枝花钢铁有限责任公司,钢铁研究院,四川,攀枝花,617001;攀枝花钢铁有限责任公司,钢铁研究院,四川,攀枝花,617001 |
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摘 要: | 应用金相和电镜方法对75kg/m断轨的金相组织、断口形貌进行了分析。结果表明,闪光焊焊接时锻量不足,加之焊缝在正火后冷速较快形成粗大马氏体组织是造成钢轨早期断裂的原因。
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关 键 词: | 钢轨 闪光焊 焊接接头 断裂分析 |
文章编号: | 1001-2303(2004)04-0008-02 |
修稿时间: | 2003-12-22 |
Fracture analysis of rail welded joints on falsh welding |
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Abstract: | The microstructure and morphology of a 75 kg/m rail fracture was analysed with optic microscope and SEM.The resultes shows that the rail fracture waw conducted by lower up allowance during flash welding and coarse martensite in welded seam beacause of rapid cooling during speed normalizing after welding. |
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Keywords: | flash welding welded joint fracture analysis |
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