“…Also, complex problems that arise from interactions between the mechanical factors including multi-layer plasticity processing, elasticity recovery and residual stress and external operation environmental factors cause damage and destruction at the joints, which create structural discontinuity and difficulty in analyses. In turn, there have been restricted studies regardless of Korea and overseas in the subject of mechanical press joining [1][2][3][4][5][6][7][8]. In order to implement the joint strength required for 1800 rpm operation, this study examined the problems associated with TIG welding such as the quality of weld zone and decline of reliability.…”