Electrode Lifetime in Spot Welding Galvanized Sheet with Insert Material

Ge Wang Shuai; Ping Fang; Zheng Hua Guo

doi:10.4028/www.scientific.net/AMR.291-294.915

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294Electrode Lifetime in Spot Welding Galvanized...

Electrode Lifetime in Spot Welding Galvanized Sheet with Insert Material

Abstract:

The effect of copper strips as an insert material on electrode failure has been studied during spot welding of galvanized sheets. The results showed that an extended electrode lifetime was obtained due to the use of copper strips between electrode and workpiece which prevented electrode from alloying with molten zinc and lowered the temperature of electrode tip. In addition, the presence of inserted copper strip increased the resistance of welding system, thus generated much more heat to form larger nugget The electrode degradation mechanism was basically caused by deformation at electrode tip and wear.

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Advanced Materials Research (Volumes 291-294)

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915-918

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https://doi.org/10.4028/www.scientific.net/AMR.291-294.915

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July 2011

Authors:

Ge Wang Shuai, Ping Fang, Zheng Hua Guo

Keywords:

Electrode Failure, Galvanized Sheet, Insert Material, Resistance Spot Welding (RSW)

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