氩弧焊应用于核岛钢衬里拼装的可行性研究
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摘要
作为核安全第三道屏障的重要组成部分,核岛钢衬里现场拼接(焊接)普遍采用以横焊和立焊位置为主的焊条电弧焊工艺,是核岛土建施工质量控制的重点和难点。通过分别采用焊条电弧焊和手工钨极氩弧焊对P265GH钢板进行焊接,研究了不同焊接工艺和焊接位置对焊接接头化学成分、显微组织和力学性能的影响及变化趋势,为手工钨极氩弧焊在核岛钢衬里工程应用的可行性提供理论依据,并形成了一整套新型焊接工艺的开发思路。
As an important part of the third barrier of nuclear safety, nuclear island steel lining is commonly pieced together by PC and PF shielded metal arc welding(SMAW) technology,which is the key and difficult point of quality control of nuclear island civil construction. The effects of different welding procedures and welding positions on chemical composition,microstructure and mechanical properties of welded joints are studied. The results provide a theoretical basis for the feasibility of the application of tungsten inert gas welding(TIG) in the nuclear island steel lining,which forms a whole set of new type welding procedures development ideas.
As an important part of the third barrier of nuclear safety, nuclear island steel lining is commonly pieced together by PC and PF shielded metal arc welding(SMAW) technology,which is the key and difficult point of quality control of nuclear island civil construction. The effects of different welding procedures and welding positions on chemical composition,microstructure and mechanical properties of welded joints are studied. The results provide a theoretical basis for the feasibility of the application of tungsten inert gas welding(TIG) in the nuclear island steel lining,which forms a whole set of new type welding procedures development ideas.
引文
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[3]康枭,刘子建,郭金霞,等.焊条电弧焊立对接焊的操作技能[J].中国新技术新产品,2012(20):150.
[4]陈妍.低碳钢焊条电弧焊平板横对接工艺的研究[J].机械工程师,2013(11):30-31.
[5]杨兵兵.低碳钢薄板送丝手工焊条电弧焊工艺研究[J].热加工工艺,2007,36(3):39-40.
[6]杨春利,林三宝.电弧焊基础[M].黑龙江:哈尔滨工业大学出版社,2003:85-93.
[7]雷鸣,王影建.图解焊工应知应会300问[M].北京:科学出版社,2012:84-128.
[8]国家能源局.NB/T 20009.6压水堆核电厂用焊接材料(第6部分:1、2、3级设备用碳钢气体保护电弧焊焊丝)[S].北京:核工业信息研究院,2012.
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[11]ISO 15614-1 Specification and Qualification of Welding Procedures for Metallic Materrials Welding Procedure Test(Part 1:Arc and Gas Welding of Steels and Arc Welding of Nickel and Nickel Alloys)[S].Switzerland:ISO,2004.
[12]中国国家标准化管理委员会.钢的低倍组织及缺陷酸蚀检验法(GB/T 226)[S].北京:中国标准出版社,2015.
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