期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 209, 期 10, 页码 4716-4721出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2008.11.036
关键词
Alternate supply of shielding gas; Argon; Argon+67%helium mixture; Aluminum alloys; Weld porosity; Weld penetration; Fluidity of weld pool; High quality
资金
- ARC (Australian Research Council)
- Ministry of Commerce, Industry and Energy Research Fund in Korea
Recently, unlike conventional method in supplying shielding gas, a newly method which alternately supplies different kinds of shielding gases in weld zone is developed and partly commercialized. However, literature related to the present status of the technology in the actual weld field is very scant. To give better understand on this technology, this study was performed. Compared with conventional gas supply method, the variations of weld porosity and weld shape in aluminum welding with alternate supply method of pure argon and pure helium were compared with conventional gas supply method with pure argon and argon + 67%helium mixture, respectively. As a result, compared with the welding by supplying pure argon and argon + 67%helium mixture by conventional method, the welding by supplying alternately pure argon and pure helium, produced lower degree of weld porosity and deeper and broader weld penetration profile. (C) 2009 Elsevier B.V. All rights reserved.
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