中国激光, 2009, 36 (12): 3174, 网络出版: 2009-12-18   

高功率CO2激光焊接管线钢接头的组织与性能

Microstructure and Properties of High Power CO2 Laser Welded Pipeline Steel
作者单位
上海交通大学 上海市激光制造与材料改性重点实验室,上海 200240
摘要
焊接是管线建设的关键技术之一,随着我国管线钢的快速发展,越来越需要匹配的焊接技术来满足管线的建设。分析了激光焊在管道焊接中的优缺点,并采用高功率激光焊接设备,对板厚为16 mm的X52管线钢进行焊接,X射线探伤检测焊缝无裂纹,采用光学显微镜分析了焊接接头的焊缝结晶特性和微观组织。根据美国石油学会标准API SPEC 5L管线钢规范,对焊接接头进行了力学性能试验。结果表明:焊接接头的抗拉强度达480 MPa,断于母材;180°接头弯曲未出现裂纹;-20 ℃焊缝金属冲击韧性CVN=279 J,熔合区冲击韧性CVN=282 J,热影响区冲击韧性CVN=212 J,焊接接头的最大硬度分布在焊缝下部,为270 HV左右。研究表明,各项性能均满足管线钢焊接的要求。
Abstract
Welding is one of the key technologies in pipeline construction. The corresponding welding technology should be meeting the requirements of the pipeline construction due to the rapid development of advanced pipeline steel. The advantages and disadvantages of laser welding for pipeline steel are analyzed. X52 pipeline steels with a thickness of 16 mm are welded using high power CO2 laser. Cracks in the weld are not detected by X-ray. Solidification properties and microstructure of laser welded joint have been studied by optical microscope. The mechanical tests of the welded joint have been conducted according to American Petroleum Institute Specification API SPEC 5 L.The results show that the ultimate tensile strength is 480 MPa ,fracturing in parent metal,without any cracks in 180°bend specimens;and Charpy notch toughness at -20 ℃ is CVN=279 J in weld metal,CVN=282 J in fusion zone and CVN=212 J in heat affected zone. The maximum hardness of butt welded joint is about 270 HV,which locates in the bottom of weld. All the mechanical properties of weld produced by using laser welding can meet the welding technical requirements of X52 pipeline steel.
参考文献

[1] 李鹤林.油气输送钢管的发展动向与展望[J]. 焊管,2004,27(6):111

    Li Helin. Developing pulse and prospect of oil and gas transmission Pipe[J]. Welded Pipe and Tube,2004,27(6):111

[2] 米秋占,于英姿,王乐生.油气长输管道的焊接技术[J]. 焊接技术,2006,35(1):46

    Mi Qiuzhan,Yu Yingzi,Wang Lesheng. Welding technology of long-distance oil and gas pipeline[J]. Welding Technology,2006,35(1):46

[3] . L. Moore,D. S. Howse,E. R. Wallach. Microstructures and properties of laser/arc hybrid welds and autogenous laser welds in pipeline steels[J]. Science and Technology of Welding and Joining, 2004, 9(4): 314-322.

[4] . Webster,J. K. Kristensen,D. Petring. Joining of thick section steels using hybrid laser welding[J]. Ironmaking & Steelmaking, 2008, 35(7): 496-504.

[5] 杨洗陈,王雨,应朝龙 等.高功率激光焊接船板的组织性能[J]. 中国激光,2007,34(6):866-870

    Yang Xichen,Wang Yu,Ying Chaolong et al.. Microstructure and Properties of High Power Laser Welding of Ship Steel Plate[J]. Chinese J. Lasers.,2007,34(6):866-870

[6] 陈继民,徐向阳,肖荣诗.激光现代制造技术[M]. 北京:国防工业出版社,2007,8283,108

    Chen Jimin,Xu Xiangyang,Xiao Rongshi. Laser Modern Manufacture Technology[M]. Beijing:National defense Industry Press,2007,8283,108

[7] 陈彦斌.现代激光焊接技术[M].北京:科学出版社,2005,23

    Chen Yanbin. Modern Laser Welding Technology[M]. Beijing:Science Press,2005,23

[8] . . Effect of assist gas flow on the gas shielding during laserdeep penetration welding[J]. Journal of Materials Processing Technology, 2007, 184(13): 379-385.

[9] . Hamadou,R. Fabbro,F. Coste et al.. Experimental study of CO2 laser welding inside a grooveApplication to high thickness laser welding[J]. Journal of Laser Applications, 2005, 17(8): 178-182.

[10] K. Y. Benyounis,A. G. Olabi,M. S. J. Hashmi. Effect of laser welding parameters on the heat input and weld bead profile[J]. Journal of Materials Processing Technology,2005,164-165:978-985

[11] K. Manonmani,N. Murugan,G. Buvanasekaran. Effects of process parameters on the bead geometry of laser beam butt welded stainless steel sheets[J]. The International Journal of Advanced Manufacturing Technology,2007,32(11-12):1125-1133

[12] 李言祥,吴爱萍. 材料加工原理[M]. 北京:清华大学出版社,2005,119-123

    Li Yanxiang,Wu Aiping. Principle of materials processing[M]. Beijing:Tsinghua University Press,2005,119-123

[13] 张文钺. 焊接冶金学[M]. 北京:机械工业出版社,1996,185-188

    Zhang Wenyue. Welding metallurgy[M]. China Machine Press,1996,185-188

[14] . Kocak,J. dos Santos,S. Riekehr.Trends in laser beam welding technology and fracture assessment of weld joints[J]. Science and Technology of Welding and Joining, 2001, 6(6): 347-350.

[15] 张小立,庄传晶,吉玲康 等.高钢级管线钢的组织特征和强韧性[J]. 特殊钢,2006,27(6):27-29

    Zhang Xiaoli,Zhuang Chuanjing,Ji Lingkang et al.. Structure Feature and Strength-Toughness of High Grade Pipeline Steels[J]. Special Steel,2006,27(6):27-29

胡连海, 黄坚, 李铸国, 吴毅雄. 高功率CO2激光焊接管线钢接头的组织与性能[J]. 中国激光, 2009, 36(12): 3174. Hu Lianhai, Huang Jian, Li Zhuguo, Wu Yixiong. Microstructure and Properties of High Power CO2 Laser Welded Pipeline Steel[J]. Chinese Journal of Lasers, 2009, 36(12): 3174.

本文已被 6 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!