진동점접합에 의해 점접합된 알루미늄 판재의 접합 성능에 관한 연구

Abstract

Recently aluminum alloy material for the car as much light has been highlighted. But aluminum plate welding by resistance welding process is difficult. So in several research groups are trying to weld efficiently aluminum alloys. Among them, vibration-spot welding is one of the ways to weld efficiently two sheets aluminum plate. This paper are covered basic research for the practical application of aluminum plates weld by vibration-spot welding. The main purpose of this paper is to evaluate the welding performance of aluminum plates that welded by vibration-spot welded. In this study, vibrating electrodes corresponding to the circumscribed-circle diameter of triangle and the diameter at the end of the electrode according to the simulations, simple test for determining the electrode material, vibration-spot welding equipment design, preceding experiment for finding energization time and current power, tensile shear test and cross-sectional shot to vibration-spot welded specimens was performed in sequence. As a result, For the aluminum plate with a thickness of 1.5mm, It was found that vibration-spot welding is available when electric current power is 40kA and energization time is 90cycle. In addition, know that the welding strength of specimen could be more than 2779.2N.