[1]赵 波,孙 奇,燕 铸,等.制管工艺及应变时效对X70抗大变形钢管性能的影响[J].焊管,2012,35(10):25-31.[doi:1001-3938(2012)10-025-07]
 ZHAO Bo,SUN Qi,YAN Zhu,et al.Effect of Pipe Manufacturing Process and Strain Aging on Properties of X70 Steel Pipe with High Deformation Resistance[J].,2012,35(10):25-31.[doi:1001-3938(2012)10-025-07]
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制管工艺及应变时效对X70抗大变形钢管性能的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
35
期数:
2012年第10期
页码:
25-31
栏目:
应用与开发
出版日期:
2012-10-28

文章信息/Info

Title:
Effect of Pipe Manufacturing Process and Strain Aging on Properties of X70 Steel Pipe with High Deformation Resistance
文章编号:
1001-3938(2012)10-025-07
作者:
赵 波12孙 奇3燕 铸4张 红12张丽娜12李国鹏12
(1. 渤海装备研究院钢管研究所,河北 沧州 062658;
2.国家石油天然气管材工程技术研究中心,陕西 宝鸡 721008;
3.渤海装备巨龙钢管公司,河北 沧州 062658;
4.中国石油技术开发公司, 北京 100101)
Author(s):
ZHAO Bo12 SUN Qi3 YAN Zhu4ZHANG Hang12 ZHANG Lina12 LI Guopeng12
(1. CNPC Bohai Equipment Research Institute Steel Pipe Research Institute, Qingxian 062658, Hebei, China;
2.National Petroleum and Gas Tubular Goods Engineering Technology Research Center,Baoji 721008,Shaanxi,China;
3.CNPC Bohai Equipment Manufacturing Co., Ltd., Julong Steel Pipe Company, Qingxian 062658, Hebei, China;
4.China Petroleum Technology & Development Corporation, Beijing 100101,China)
关键词:
X70抗大变形钢管扩径工艺应变时效性能变化
Keywords:
 X70 steel pipe with high deformation resistance expansion process strain aging property variation
分类号:
TG115.5
DOI:
1001-3938(2012)10-025-07
文献标志码:
A
摘要:
结合中缅天然气管线工程用X70级?准 1 016 mm×17.5 mm抗大变形直缝埋弧焊管的试制,研究了直缝埋弧焊管制管前后、应变时效前后力学性能变化的一般规律。成型、扩径工艺导致母材发生加工硬化,产生较强的形变强化,使其屈服强度、抗拉强度、屈强比同时增大,使均匀延伸率、应力比降低,且屈服强度、屈强比的增加幅度要大于抗拉强度的增加幅度。应变时效使材料均匀延伸率进一步降低。但是制管和时效后钢管管体各项性能均在X70抗大变形钢管标准要求的范围内,管体纵向应力-应变曲线仍呈圆屋顶形,试制的X70抗大变形钢管具有优异的变形能力。
Abstract:
Based on trial production of X70 ?准 1 016 mm×17.5 mm SAWL pipe for the Myanmar-China Gas Pipeline Project, the general changing rules of mechanical properties of SAWL pipe before and after pipe manufacturing, before and after the strain aging were studied. The pipe forming and expansion process not only cause work hardening of base metal and the greater deformation strengthening, but also increase the yield strength, the tensile strength and the yield ratio; decrease the uniform elongation rate(UEL) and the stress ratio, moreover, the increasing degree of yield strength and yield ratio is higher than that of tensile strength. The strain aging reduces the UEL of the material further. However, various properties of pipe body after pipe manufacturing and ageing are all within the range required by the X70 steel pipe with high deformation resistance, and the longitudinal stress-strain curve of pipe body is still vaulting shape, thus the trial manufactured X70 pipe with high deformation resistance has excellent deformability.

参考文献/References:

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备注/Memo

备注/Memo:
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作者简介:赵波(1975—),男,高级工程师,主要从事管线钢材料、焊接工艺及设备研究工作。
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