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Analysis and optimisation of electrode life for conventional and compound tip electrodes during resistance spot welding of electrogalvanised steels

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Title Analysis and optimisation of electrode life for conventional and compound tip electrodes during resistance spot welding of electrogalvanised steels
 
Creator DE, A
DORN, L
GUPTA, OP
 
Description Rapid electrode wear is the major concern in resistance spot welding Of galvanised steels. The electrode lift irt such instances is tremendously influenced by the continuous alloying reactions that occur between the molten free zinc and the copper electrodes. It is shown in the present work that the use of compound electrodes can considerably enhance the effective electrode life. The compound electrodes are fabricated by introducing a tungsten insert at the tip of conventional circular face electrodes. The performance of these new electrodes has been investigated under laboratory conditions during multispot welding. It is observed that the compound tip electrodes can offer superior electrode life only for a small insert size. A finite element method based numerical simulation has simultaneously been carried out. The results of the numerical calculation also indicate that the optimum design of the compound tip electrode depends on the insert size. (C) 2000 IoM Communications Ltd.
 
Publisher INST MATERIALS
 
Date 2011-08-03T08:39:15Z
2011-12-26T12:54:07Z
2011-12-27T05:41:34Z
2011-08-03T08:39:15Z
2011-12-26T12:54:07Z
2011-12-27T05:41:34Z
2000
 
Type Article
 
Identifier SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 5(1), 49-57
1362-1718
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8965
http://hdl.handle.net/10054/8965
 
Language en