| 铁路敞车中梁埋弧焊裂纹分析 |
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| 引用本文： | 杨永升,张志昌. 铁路敞车中梁埋弧焊裂纹分析[J]. 电焊机, 2007, 37(8): 72-73 |
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| 作者姓名： | 杨永升 张志昌 |
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| 作者单位： | 眉山车辆厂,四川,眉山,620020 |
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| 摘 要： | 采用埋弧焊焊接出口巴基斯坦的铁路敞车中梁时,产生了大量的裂纹.对其焊接工艺、焊接材料、工件表面污物、材料化学成分等进行了分析;确定了出现裂纹的原因是由两方面引起,一是硫化物偏析引起的热裂纹,二是焊接规范不合理.经工艺试验与分析,采用H08Mn2焊丝和合理焊接规范,有效防止了裂纹的产生.
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| 关 键 词： | 埋弧焊 焊接裂纹 成分偏析 焊接规范 |
| 文章编号： | 1001-2303（2007）08-0072-02 |
| 修稿时间： | 2007-05-11 |
Crack analysis about beam of railway gondola car with SAW |
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| YANG Yong-sheng,ZHANG Zhi-chang. Crack analysis about beam of railway gondola car with SAW[J]. Electric Welding Machine, 2007, 37(8): 72-73 |
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| Authors: | YANG Yong-sheng ZHANG Zhi-chang |
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| Affiliation: | Meishan Vehicle Plant, Meishan 620020, China |
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| Abstract: | There appear a lot of cracks on the beams of Pakistan railway gondola cars in submerged arc welding.This paper analyzes the welding technology,welding materials,surface dirt of workpiece and chemical composition of materials,and identifies two causes of cracks:first,heat crack caused by sulfide segregation;second,welding specification is unreasonable.After test and analysis of technology,using H08Mn2 welding wire and reasonable welding specification effectively prevent the cracks from forming. |
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| Keywords: | submerged arc welding welding crack component analysis welding specification |
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