TY - JOUR
T1 - Degradation mechanism of electrode tip during resistance spot welding of aluminium alloy sheets
AU - Masatsune, Kondo
AU - Hiroshi, Nagata
AU - Akihisa, Nishimura
AU - Hiroyuki, Kokawa
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - This study investigated the electrode life and the electrode degradation characteristics during resistance spot welding of aluminium alloy sheets. When a long welding time and the DR type electrode shape were used, the electrode life was much longer than that with a short welding time and the R type electrode shape. The degradation mechanism of electrode tip was explained in the following way; firstly, Al-Cu alloy layers were formed at the electrode top during consecutive welding, and then the layers stuck easily to the surfaces of aluminium alloy sheets so that notable wear took place and the surface profile of electrode tip became flat. In order to eliminate the direct contact between the electrode and the sheet, a special Cu-foil insert device for resistance spot welding of aluminium alloy sheets was developed and achieved an extremely long electrode life.
AB - This study investigated the electrode life and the electrode degradation characteristics during resistance spot welding of aluminium alloy sheets. When a long welding time and the DR type electrode shape were used, the electrode life was much longer than that with a short welding time and the R type electrode shape. The degradation mechanism of electrode tip was explained in the following way; firstly, Al-Cu alloy layers were formed at the electrode top during consecutive welding, and then the layers stuck easily to the surfaces of aluminium alloy sheets so that notable wear took place and the surface profile of electrode tip became flat. In order to eliminate the direct contact between the electrode and the sheet, a special Cu-foil insert device for resistance spot welding of aluminium alloy sheets was developed and achieved an extremely long electrode life.
KW - Aluminium alloy sheet
KW - Electrode degradation mechanism
KW - Electrode life
KW - Electrode tip
KW - Resistance spot welding
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U2 - 10.2207/qjjws.28.177
DO - 10.2207/qjjws.28.177
M3 - Article
AN - SCOPUS:77958135937
VL - 28
SP - 177
EP - 186
JO - Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
JF - Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
SN - 0288-4771
IS - 2
ER -