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The Weldability of Laminated Stator Core for Motor by Pulsed Nd:YAG Laser [ I ] - The Effect of Processing Parameter on Weldability of Laser -  

Kim Jong-Do (한국해양대학교 기관시스템공학부)
Yoo Seung-Jo (한국해양대학교 기관시스템공학부)
Kim Jang-Soo (한국해양대학교 대학원)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.30, no.5, 2006 , pp. 629-635 More about this Journal
Abstract
Manufacture of motor by laser has been studying realization that was demands on market for lightening and miniaturization. Moreover. early in the 1980s. manufacture of parts for automobiles by laser welding was already successfully introduced. The purpose of this study was to develop production technology of the high quality laminated stator core for motor by pulsed Nd:YAG laser heat source. In the event of adjusting defocus and voltage to control humping in laser welding of the laminated core. sound bead could be obtained. but deep penetration was not. Therefore. explosive evaporating plasma was controlled by adjustment of peak power on pulse width. Particularly, because explosive evaporating plasma induced high peak power, made molten metal in keyhole scatter. a suitable adjustment of peak power was required to obtain sound bead. As a results of experiment. sound bead and deep penetration could be obtained.
Keywords
Pulsed Nd:YAG laser; Laminated core; Pulse width; Peak power;
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