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[1]练章华,李帅,牟易升,等.双金属衬里复合管堆焊及对接焊有限元力学分析*[J].中国安全生产科学技术,2020,16(11):53-58.[doi:10.11731/j.issn.1673-193x.2020.11.008]
　LIAN Zhanghua,LI Shuai,MOU Yisheng,et al.Finite element mechanical analysis on surfacing and butt welding of bimetal lined composite pipe[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(11):53-58.[doi:10.11731/j.issn.1673-193x.2020.11.008]
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双金属衬里复合管堆焊及对接焊有限元力学分析*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年11期
页码:
53-58
栏目:
职业安全卫生管理与技术
出版日期:
2020-11-30

文章信息/Info

Title:
Finite element mechanical analysis on surfacing and butt welding of bimetal lined composite pipe
文章编号:
1673-193X(2020)-11-0053-06
作者:
练章华; 李帅; 牟易升; 李泳宏; 赵朝阳; 陈俊文
（1.西南石油大学 油气藏地质及开发工程国家重点实验室，四川 成都 610500；
2.中国石油工程建设有限公司西南分公司，四川 成都 610041）
Author(s):
LIAN Zhanghua;  LI Shuai;  MOU Yisheng;  LI Yonghong;  ZHAO Zhaoyang;  CHEN Junwen
(1.State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China;
2.China Petroleum Engineering ＆ Construction Corp.Southwest Company,Chengdu Sichuan 610041,China)
关键词:
双金属衬里复合管; 堆焊; 对接焊; 热处理; 残余应力
Keywords:
bimetal lined composite pipe;  surfacing;  butt welding;  heat treatment;  residual stress
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2020.11.008
文献标志码:
A
摘要:
为研究双金属衬里复合管堆焊及对接焊焊接后焊接处应力变化，针对Φ89(8+2) mm尺寸衬里复合管，基于热-力耦合理论，建立瞬态热-固耦合管端堆焊与对接焊V型槽环焊缝轴对称力学模型。探讨衬里复合管堆焊及对接焊过程中整个焊肉及热影响区的应力变化并对应力区进行完整、详细分析。结果表明：衬里复合管焊接完成后焊区产生较高的残余应力，最高达463.47 MPa；热处理工艺消除了90%的残余应力，然而投入使用的复合管仍然存在3个高应力区：对接焊焊肉内、过渡区中靠近对接焊焊肉的基管上及2次堆焊起始点，其中应力最大的位置在2次堆焊的起始点，最高达46.63 MPa。建立的模型和计算结果可为实际工况下衬里复合管焊接部位的力学性质研究提供参考。
Abstract:
In order to study the stress change at the welded joint of bimetallic lined composite pipe after surfacing and butt welding,an axisymmetric mechanical model of Vtype groove girth weld in the transient thermalsolid coupling pipe end surfacing and butt welding was established based on the thermal mechanical coupling theory for the lined composite pipe with size of Φ 89 (8+2) mm.The stress change of the whole welding meat and heat affected zone during the surfacing and butt welding process of lined composite pipe were investigated,and the stress zone was analyzed in detail.The results showed that after the welding of lined composite pipe,the higher residual stress generated in the welding area,up to 463.47 MPa.The heat treatment process eliminated 90% of the residual stress,but there were still three high stress zones in the used composite pipe.for the positions in the butt welding meat,on the base pipe near the butt welding meat in the transition zone and at the starting point of second surfacing,the position with the largest stress was the starting point of second surfacing,with the maximum value of 46.63 MPa.The established model and calculation results can provide reference for the study on mechanical properties of welded joint on the lined composite pipe under actual working conditions.

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备注/Memo

备注/Memo:
收稿日期： 2020-09-20
* 基金项目： 国家自然科学基金面上项目（51974271）；国家自然科学基金联合基金项目（U19A209）
作者简介： 练章华，博士，教授，主要研究方向为管柱力学、CAD/CAE/CFD、地应力、钻井完井技术。
通信作者： 李帅，硕士研究生，主要研究方向为油气井工程力学。
更新日期/Last Update: 2020-12-06