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Welding Characteristics on Heat input Changing of Laser Dissimilar Metals Welding  

Mo Yang-Woo (조선대 기계공학과)
Shin Byung-Heon (조선대 일반대학원 정밀기계공학과)
Shin Ho-Jun (조선대 일반대학원 정밀기계공학과)
Yoo Young-Tae (조선대학교 기전공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.15, no.2, 2006 , pp. 51-58 More about this Journal
Abstract
Laser welding of dissimilar metals has been widely used to improve a wear resistance and a corrosion resistance of the industrial parts. The objective of this research works is to investigate the influence of the process parameters, such as the welding for SM45C and STS304 with CW Nd:YAG lasers. The bead-on-plate welding tests are carried out for several combinations of the experimental conditions. In order to quantitatively examine the characteristics of the dissimilar welding, the welding quality of the cut section, stain-stress behavior and the hardness of the welded part are investigated. From the results of the investigation, it has been shown that the optimal welding condition without defects in the vicinity of the welded area and with a good welding qualify is 1600W of the laser power, 0.85m/min of welding speed and $4{\ell}/min$ of pressure for shielding gas.
Keywords
Laser welding; Butt welding; Welding speed; Aspect ratio; STS304; SM45C; Heat input capacity;
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