| X70钢螺旋焊缝冷弯管的质量评价 |
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| 引用本文： | 池强,刘迎来,高广林,马明来.X70钢螺旋焊缝冷弯管的质量评价[J].理化检验(物理分册),2009,45(4):195-198. |
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| 作者姓名： | 池强 刘迎来 高广林 马明来 |
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| 作者单位： | 池强,刘迎来,CHI Qiang,LIU Ying-lai(中国石油天然气集团公司,管材研究所,西安,710065);高广林,马明来,GAO Guang-lin,MA Ming-lai(华北石油工程建设有限公司,河北任丘,062552)
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| 摘 要： | 对φ1219mm的X70钢螺旋焊缝冷弯管的性能进行了试验研究。结果表明：冷弯管管端椭圆度变化比较明显，外弧处的壁厚减薄率较大。钢管弯制过程未对焊缝结构及性能产生明显的影响。相比弯管直管段，弯管外弧处母材的强度及硬度在时效处理后增大比较明显；弯管伸长率及冲击韧度略有减小。
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| 关 键 词： | 冷弯管 力学性能 X70钢 |
Quality Evaluation of Spiral Seam Cold Bending Pipe of X70 Steel |
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| CHI Qiang,LIU Ying-lai,GAO Guang-lin,MA Ming-lai.Quality Evaluation of Spiral Seam Cold Bending Pipe of X70 Steel[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2009,45(4):195-198. |
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| Authors: | CHI Qiang LIU Ying-lai GAO Guang-lin MA Ming-lai |
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| Affiliation: | 1.Tubular Goods Research Center of China National Petroleum Corporation;Xi'an 710065;China;2.Huabei Petroleum Engineering Construction Corporation;Renqiu Hebei 062552;China |
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| Abstract: | The properties of X70 spiral seam cold bending pipe with 1 219 mm diameter were researched.The results showed that the ellipticity change of cold bending pipe end was comparatively obvious,and the wall thickness reduction was appeared on outer side than inner side of cold bending pipe.The effect of bending process of pipe on the structure and property of welding seam was not obvious.The base material on outer side by aging treatment exhibited higher strength and hardness than the base material on straight p... |
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| Keywords: | cold bending pipe mechanical property X70 steel |
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