[1]毕宗岳,刘海璋,牛 辉,等.X80管线钢环焊缝气体保护焊焊丝的研制[J].焊管,2012,35(10):5-9.[doi:1001-3938(2012)10-0005-05]
 BI Zongyue,LIU Haizhang,NIU Hui,et al.Research on Gas-shielded Welding Wire of Circumferential Weld for X80 Pipeline Steel[J].,2012,35(10):5-9.[doi:1001-3938(2012)10-0005-05]
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X80管线钢环焊缝气体保护焊焊丝的研制()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
35
期数:
2012年第10期
页码:
5-9
栏目:
综述
出版日期:
2012-10-28

文章信息/Info

Title:
Research on Gas-shielded Welding Wire of Circumferential Weld for X80 Pipeline Steel
文章编号:
1001-3938(2012)10-0005-05
作者:
毕宗岳12刘海璋12牛 辉12黄晓辉12张万鹏12
(1.国家石油天然气管材工程技术研究中心,陕西 宝鸡 721008;
2. 宝鸡石油钢管有限责任公司 钢管研究院,陕西 宝鸡 721008)
Author(s):
BI Zongyue12 LIU Haizhang12 NIU Hui12 HUANG Xiaohui12 ZHANG Wanpeng12
(1.National Petroleum and Gas Tubular Goods Engineering Technology Research Center,Baoji 721008,Shaanxi,China;2. Steel Pipe Research Institute of Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008,Shaanxi, China)
关键词:
X80管线钢环焊缝气体保护焊焊丝焊接工艺
Keywords:
X80 pipeline steel circumferential weld gas-shielded welding welding wire welding process
分类号:
TG422.3
DOI:
1001-3938(2012)10-0005-05
文献标志码:
A
摘要:
针对X80管线钢的组织与性能特点,研究设计了适用于管线钢现场焊接用Mn-Ni-Mo-Ti合金系气体保护焊焊丝;测试了焊缝金属的化学成分、金相组织、冲击韧性、抗拉强度和硬度。该焊丝的熔敷金属屈服强度600 MPa,抗拉强度645 MPa,-30 ℃夏比冲击功105 J。该焊丝用于X80管线钢现场焊接结果表明,焊缝抗拉强度645 MPa,-10 ℃夏比冲击功平均值145 J,焊缝具有很好的强韧性匹配。采用金相显微镜和SEM对使用该焊丝焊缝微观组织和断口形貌分析表明,焊缝金相组织主要为针状铁素体、少量的先共析铁素体和粒状贝氏体的组织,断口为韧窝状,呈现典型的塑性断裂特征。
Abstract:
According to the characteristics of the microstructure and properties of X80 pipeline steel, the Mn-Ni-Mo-Ti alloy gas-shielded welding wire was successfully designed and developed for site welding. The chemical composition, metallurgical structure, impact toughness, tensile strength and hardness of the weld metal were tested. The yield strength of deposited metal of the welding wire was 600 MPa, tensile strength was 645 MPa, and Charpy impact energy(-30 ℃) was 105 J. The site welding result of X80 pipeline steel showed that the weld was with perfect strength and toughness matching, when the tensile strength of weld was 645 MPa , the average value of Charpy impact energy (-10 ℃) was 145 J. The microstructure and fracture apperance of weld were analyzed by using metallographic microscope and scanning electron microscope(SEM),the analysis results indicated that the microstructure of weld mainly are acicular ferrite, a few proeutectoid ferrite and granular bainite, and the fracture is dimple which presents a typical ductile fracture characteristics.

参考文献/References:

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备注/Memo

备注/Memo:
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作者简介:毕宗岳(1962—),男,博士,高级工程师,长期从事油气输送及油田钻采用焊接钢管的开发研究工作。
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