Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
권호 표지

The Characteristics of Butt Welding Nd:YAG Laser with a Continuous Wave of Nickel Coated S45C Steel

니켈도금된 S45C강의 연속파 Nd:YAG 레이저 맞대기 용접 특성

  • 모양우 (조선대학교 기계공학과) ;
  • 신호준 (조선대학교 일반대학원 정밀기계공학과) ;
  • 신병헌 (조선대학교 일반대학원 정밀기계공학과) ;
  • 유영태 (조선대학교 메카트로닉스공학과)
  • Published : 2007.08.15
Download PDF
⟨ Previous Next ⟩

Abstract

S45C steel has been widely used in industrial applications, such as crank shafts, gears, main spindles of machine tools, connecting rods, etc., because of its distinguished mechanical property. In the convention arc welding of S45C plates without heat treatments, it is possible for welding defects to take place, such as a void or a hot-crack, due to a high carbon composition of S45C. Laser welding process is widely used in the industrial field due to its numerous advantages: a small heat affected zone(HAZ), deep penetration, high welding speed, single-pass thick section capability, and small distortion after welding. The objective of this research works is to investigate the influence of the process parameters, such as power of laser and welding speed, on the characteristics of laser welding for the case of nickel coated and nickel uncoated S45C steel. As the result of the experiment, in case of butt welding, nickel coated S45C steel has a uniform formation of welding zone and it was judged that the welding nature was better as inner defects and the quantity of spatter were formed relatively fewer than nickel uncoated S45C steel.

Keywords

References

  1. Benyounis, K. Y., Olabi, A. G. and Hashmi, M. S. J., 2005, 'Effect of laser welding parameters on the heat input and weld-bead profile,' Journal of Materials Processing Technology, Vol. 164-165, pp. 978-985
  2. Benyounis, K. Y. and Olabi, A. G., 2005, 'Optimizing the laser-welded butt joints of medium carbon steel using RSM,' Journal of Materials Processing Technology, Vol. 164-165, pp. 986-989
  3. Olabi, A. G., Casalino, G., Benyounis, K. Y. and Hashmi, M. S. J., 2006, 'An ANN and Taguchi algorithms integrated approach to the optimization of CO2 laser welding,' Advances in Engineering Software
  4. Sun, Z. and Kuo, M., 1999, 'Bridging the joint gap wire feed laser welding,' Journal of Materials Processing Technology, Vol. 87, pp. 213-222 https://doi.org/10.1016/S0924-0136(98)00346-X
  5. John F. Ready, 2001, 'LIA Handbook of Laser Materials processing,' LIA. Magnolia Publishing Inc., pp. 223-262
  6. Khallaf, M. E. and Ibrahim, M. A., 1997, 'On crack susceptibility in the submerged arc welding of medium-carbon steel plates,' Journal of Materials Processing Technology, Vol. 68, pp. 43-49 https://doi.org/10.1016/S0924-0136(96)02530-7
  7. Noh, Y. T. and Kim, B. C., 2001, 'Welding behavior between Zn-coated steel plate and free cutting carbon steel rod by Nd:YAG laser beam,' Journal of KSLP, Vol. 4, pp. 30-39
  8. Jeong, H. C., 2002, High Temperature Crack on Welding Parts of Carbon Steel, Welding Research Team of Technology Research Center of POSCO