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1. 发明申请

US20070131655A1 Method of spot welding aluminum 有权
标题翻译：铝点焊方法
公开(公告)号：US20070131655A1
公开(公告)日：2007-06-14
申请号：US11298216
申请日：2005-12-09
申请人： Donald Spinella , John Brockenbrough , Joseph Fridy
发明人： Donald Spinella , John Brockenbrough , Joseph Fridy
IPC分类号： B23K31/02 , B23K20/00 , B23K31/12
CPC分类号： B23K11/252 , B23K11/253
摘要： The present invention provides an improved method of resistance welding comprising the steps of contacting a metal sheet with an electrode having an initial contact surface area at a force to provide a pressure to the metal sheet; applying a current through the electrode to the metal sheet; measuring dimensional changes of the electrode; correlating dimensional changes in the electrode to changes in the initial contact surface area; and adjusting the force to compensate for the changes in the initial contact surface area of the electrode to maintain pressure to the metal sheet. The force may be adjusted by stepping the force to maintain pressure to the faying surface of the metal sheet to be welded. By maintaining the pressure at the faying surface the life cycle of the electrodes may be increased without forming discrepant welds. The current may also be stepped to further extend electrode life.
摘要翻译：本发明提供了一种改进的电阻焊接方法，包括以下步骤：使金属片与一个具有初始接触表面积的电极接触，以对金属片施加压力; 将电流施加到所述金属片上; 测量电极的尺寸变化; 将电极中的尺寸变化与初始接触表面积的变化相关联; 并且调节力以补偿电极的初始接触表面积的变化以保持对金属片的压力。可以通过施加力来调节力以保持对待焊接的金属板的接合表面的压力。通过保持接合表面的压力，可以增加电极的寿命周期而不形成不一致的焊缝。电流也可以进一步延长电极寿命。

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