Characterization of electrical contact conditions in spot welding assemblies

被引：62
作者：
Rogeon, P. [1 ]
Carre, P. [1 ]
Costa, J. [1 ]
Sibilia, G. [2 ,3 ]
Saindrenan, G. [2 ]
机构：
[1] Univ Bretagne Sud, Lab Etud Therm Energet & Environm, F-56321 Lorient 3, France
[2] Univ Nantes, Ecole Polytech, Lab Genie Mat, F-44306 Nantes 3, France
[3] MXP CEB ASG, Ctr Tech Velizy, PSA Peugeot Citroen, F-78943 Velizy Villacoublay, France
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2008年 / 195卷 / 1-3期
关键词：
spot welding; electrical contact resistance; interface; coated steel sheet;
D O I：
10.1016/j.jmatprotec.2007.04.127
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study the interfacial conditions encountered in electrodes and sheets assemblies used in resistance spot welding process are characterized. Electrical contact resistances are measured on a specific device, allowing to rise high pressure and elevated temperature. Measurements concern electrode-sheet (E/S) and sheet-sheet (S/S) interfaces, considering coated and non-coated steel sheets. The evolutions of the electrode profiles according to the number of weld are presented. The quick wear of the electrodes surfaces is also measured, depending on the type of sheets (coated or none coated). A numerical approach is chosen to simulate the squeezing stage, to show the consequences of modifying the electrode profiles on the initial contact surfaces at the beginning of the heating stage. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：117 / 124
页数：8
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