[1]刘宗芳,张 勇,张 涛,等.电极压力对2A12铝合金电阻点焊裂纹的影响[J].焊管,2014,37(1):5-10.[doi:1001-3938(2014)01-0005-06]
 LIU Zongfang,ZHANG Yong,ZHANG Tao,et al.Effect of Electrode Pressure to Crack of Resistance Spot Welding ofAluminum Alloy 2A12[J].,2014,37(1):5-10.[doi:1001-3938(2014)01-0005-06]
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电极压力对2A12铝合金电阻点焊裂纹的影响()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
37
期数:
2014年第1期
页码:
5-10
栏目:
试验与研究
出版日期:
2014-01-28

文章信息/Info

Title:
Effect of Electrode Pressure to Crack of Resistance Spot Welding of
Aluminum Alloy 2A12
文章编号:
1001-3938(2014)01-0005-06
作者:
刘宗芳1张 勇1张 涛1谢红霞1张乾宁2
(1.西北工业大学 凝固技术国家重点实验室 摩擦焊接陕西省重点实验室,西安710072;
2.中国电子科技集团公司第二十研究,西安710068)
Author(s):
LIU Zongfang1 ZHANG Yong1 ZHANG Tao1 XIE Hongxia1 ZHANG Qianning2
(1. State Key Laboratory of Solidification Processing,Shaanxi Key Laboratory of Friction Welding Technologies,Northwestern Polytechnical University,Xi’an 710072,China;
2. The SheetMetaland Machining Workshop of the 20th Research Institute of China Electronic Technology Corporation,Xi’an 710068,China)
关键词:
焊接电阻点焊高强铝合金焊接压力锻压力裂纹
Keywords:
weldingelectric resistance spot weldinghigh-strength aluminum alloywelding pressureforging pressurecrack
分类号:
TG457.14
DOI:
1001-3938(2014)01-0005-06
文献标志码:
A
摘要:
采用DZ-3×63型三相次级整流式点焊机对1 mm厚2A12铝合金进行了点焊试验。通过焊接压力和锻压力的不同组合,研究焊接压力和锻压力对2A12铝合金点焊熔核裂纹的分布规律及形状尺寸的综合影响。结果表明:产生的裂纹一般是位于熔核内的纵向凝固裂纹。在电极下方中部、熔核边沿的热影响区,可能形成沿晶横向液化裂纹;在焊接压力一定的条件下,产生的裂纹数量和长度总体随锻压力的增大而减小;高强铝合金点焊时,焊接压力越大,锻压力也需相应增大。
Abstract:
Spot welding experiment of the aluminum alloy 2A12 sheet with thickness of 1 mm was performed at the three-phase secondary rectification welding machine DZ-3×63. It studied the combined effect of welding pressure and forging pressure on the crack distribution law, shape and size of the aluminum alloy 2A12-T4 spot welding joint through different combination of welding pressure and forging pressure. The results showed that cracks generated in the nugget are normally longitudinal solidification crack. However, sometimes there is transverse liquation crack generating in the central region under electrode, which is the HAZ(heat-affected zone) near nugget edge. Under the condition of certain welding pressure, the number and length of cracks decrease with the increasing of forging force. For high strength aluminum alloy spot welding, the more welding pressure to be added, the more forging pressure needed to be increased accordingly.

参考文献/References:

[1] 张学军,李艳,张文扬.航空用中、高强度铝合金点焊工艺[J].焊接,2012(05):44-48.
[2] SENKARA J,ZHANG H.Cracking in Spot Welding Aluminum Alloy AA5754[J].Welding Journal,2000,79(07): 194-201.
[3] THORNTON P H,KRAUSE A R,DAVIES R G.Aluminum Spot Weld[J]. Welding Journal,1996,75(03): 101-108.
[4] 彭云.铝合金焊接结晶裂纹的防止[J].焊接,1995(01): 2-5.
[5] 黄伯云,李成功,石力开,等.中国材料工程大典(第4卷)有色金属材料工程(上)[M].北京:化学工业出版社,2006:64-67.
[6] CHANG C C,CHEN C L,WEN J Y,et al.Characterization of Hot Cracking Due to Welding of High-Strength Aluminum Alloys[J]. Materials and Manufacturing Processes,2012,27(06):658-663.
[7] 徐厚训.对LY12CZ铝合金板材点焊中“胡须”的探讨[J].材料工程,1982(03): 25-29.
[8] 六二一焊接声发射监控题目组.LY12铝合金点焊裂纹的声发射特性探讨[J].材料工程,1979(02):25-29.
[9] SUN H T, LAI X M, ZHANG Y S,et al.Effect of Variable Electrode Force on Weld Quality in Resistance Spot Welding[J].Science and Technology of Welding & Joining, 2007,12(08):718-724.
[10] 常保华,都东,岁波,等.锻压力对铝合金点焊接头疲劳行为的影响[J].焊接学报,2005,26(08):5-8.
[11] FURUKAWA K, KATOH M, NISHIO K, et al.Evaluation of Welds of Aluminum Alloy AA6022-T4 Welded Using an Electrode Force Changeable Resistance Spot Welding Machine[J].Welding International, 2007,21(07):471-481.
[12] HASSANIFARD S, ZEHSAZ M, TOHGO K.The Effects of Electrode Force on the Mechanical Behaviour of Resistance Spot-welded 5083-O Aluminium Alloy Joints[J].Strain,2011,47(s1):196-204.
[13] QIU R, SHI H, YU H, et al.Effects of Electrode Force on the Characteristic of Magnesium Alloy Joint Welded by Resistance Spot Welding with Cover Plates[J].Materials and Manufacturing Processes,2010,25(11):1304-1308.
[14] Н.П.梁基谢夫.金属二元系相图手册[M].郭青蔚,译.北京:化学工业出版社,2008:55-56.
[15] 刘伟平,田锡唐,张修智.一种防止高强铝合金焊接热裂纹产生的新方法[J].焊接学报,1995,16(02):106-111.
[16] 周万盛,姚君山.铝及铝合金的焊接[M].北京: 机械工业出版社,2006:50-52.

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备注/Memo

备注/Memo:
收稿日期:2013-12-04
基金项目:国家自然科学基金资助项目(51275418)。
作者简介:刘宗芳(1987—),女,在读硕士研究生,主要从事电阻焊质量控制研究工作。
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