| X70JCOE焊管机械扩径工艺 |
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| 引用本文： | 张志明,卢胜勇,苏景富,苏志,熊伟. X70JCOE焊管机械扩径工艺[J]. 焊管, 2011, 34(5): 43-46,51 |
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| 作者姓名： | 张志明 卢胜勇 苏景富 苏志 熊伟 |
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| 作者单位： | 渤海装备巨龙钢管南京公司,南京,210061 |
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| 摘 要： | 根据国产TMCP微合金管线钢板屈服强度(R<,t0.5>)变化较大的现状,有针对性地对某厂X70管线钢板采用了JCO+机械扩径制造工艺,获得了对应屈服强度、抗拉强度、屈强比和冲击韧性的变化曲线,分析了不同扩径率下钢管的力学性能变化规律和微观组织对力学性能的作用机理,阐述了合理选择扩径工艺的实践作法,并给出了JCOE直缝...
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| 关 键 词： | TMCP X70 直缝埋弧焊管 扩径率 冲击韧性 |
Mechanical Expanding Diameter Process of X70 JCOE Pipe |
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| ZHANG Zhi-ming,LU Sheng-yong,SU Jing-fu,SU Zhi,XIONG Wei. Mechanical Expanding Diameter Process of X70 JCOE Pipe[J]. Welded Pipe and Tube, 2011, 34(5): 43-46,51 |
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| Authors: | ZHANG Zhi-ming LU Sheng-yong SU Jing-fu SU Zhi XIONG Wei |
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| Affiliation: | (Naning Julong Steel Pipe Company of CNPC Bohai Equipment Manufacturing Co.,Ltd.,Nanjing 210061,China) |
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| Abstract: | According to the bigger change of yield strength(Rt0.5)for China domestic TMCP microalloy pipeline steel plate,a kind of relevant manufacturing process was adopted for X70 steel plate in some factory,and the change curve of corresponding yield strength,tensile strength,yield ratio and impact toughness were obtained.It analyzed mechanical properties change rule and effect mechanism of microstructure to mechanical properties,expatiated practices of reasonably selecting expanding process,and gave the ultimate limit for accepting X70 steel plate used for JCOE SAWL pipe production line. |
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| Keywords: | TMCP X70 SAWL pipe ratio of expanding diameter impact toughness |
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