[1]户志国,王芳涛.直流正接在双丝埋弧焊中的应用[J].焊管,2012,35(9):34-38.[doi:1001-3938（2012）09-0034-05]
　HU Zhiguo,WANG Fangtao.Application of DCSP in Double Wires Submerged Arc Welding[J].,2012,35(9):34-38.[doi:1001-3938（2012）09-0034-05]
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直流正接在双丝埋弧焊中的应用
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
35
期数:
2012年第9期
页码:
34-38
栏目:
应用与开发
出版日期:
2012-09-28

文章信息/Info

Title:
Application of DCSP in Double Wires Submerged Arc Welding
文章编号:
1001-3938（2012）09-0034-05
作者:
户志国; 王芳涛
（中油宝世顺（秦皇岛）钢管有限公司，河北 秦皇岛 066206）
Author(s):
HU Zhiguo;  WANG Fangtao
（Zhongyou BSS（Qinhuangdao）Petropipe Co.， Ltd.， Qinhuangdao 066206，Hebei，China）
关键词:
多丝埋弧焊; 直流正接; 烧穿; 薄壁厚
Keywords:
double wire submerged arc welding;  weld;  DCSP;  burn through;  thin thickness
分类号:
TG434.1
DOI:
1001-3938（2012）09-0034-05
文献标志码:
B
摘要:
在采用多丝埋弧焊工艺焊接小直径、薄壁厚的钢管时，由于钢管壁厚小，易造成内焊烧穿，为避免烧穿而减小焊接参数时又会带来焊缝内部气孔、夹渣等缺陷，通过改变焊接电源极性的方法，即两丝埋弧焊内焊的第一丝采用直流正接的方法来解决此问题。选择壁厚为10.3 mm规格钢管进行试验，内焊第一丝（前丝）电源极性采用直流正接，二丝（后丝）采用交流的焊接工艺，焊缝质量良好，且各项力学性能指标均满足标准要求。
Abstract:
During the welding small-diameter and thin-thickness pipe with multi-wires submerged arc welding technology, due to the thinner thickness of the pipes, it is easy to cause inner welding burn through. In order to avoid burn through, it can reduce welding parameters; however which can bring other defects such as the gas pocket in weld, slag inclusions and others. In view of this situation, it can solve such problems through changing the welding source polarity, that is adopting DCSP to the front wire during double wires submerged arc welding. Selecting the pipe with 10.3 mm thickness to conduct test, DCSP is adopted for source polarity of inner welding front wire, and AC for the back wire. The weld quality is perfect, and all the mechanical properties can meet the requirements of standard.

参考文献/References:

［1］ 蔡立民.MZS-1250型双弧双丝埋弧焊设备及工艺［J］.电焊机，2006，36（04）：29-31.
［2］ 王倩，杨忠民，吴庆辉，等.低碳钢先共析铁素体和形变诱导铁素体的相变机制、组织和性能［J］.特殊钢，2008，29（04）：8-10.
［3］ 刘礼华，蔡磊，赵敏，等.“针状”先共析铁素体形成及对钢丝性能的影响［J］.材料科学与工艺，2005，13（06）：659-664.
［4］ 翁宇庆.超细晶粒钢［M］.北京：冶金工业出版社，2003.
［5］ 杨平，崔凤娥，常守海，等.低碳钢形变强化相变铁素体结构类型分析［J］.材料研究学报，2003，17（05）：510-513.
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备注/Memo

备注/Memo:
作者简介：户志国（1979—），男，硕士，主要从事输油气用钢管制造焊接工艺技术工作。
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