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다구찌 방법을 이용하는 전기강판 코일 연결용 레이저 용접 공정의 최적화

The Optimization of Laser Welding Process for Electrical Steel Coil Joining Using the Taguchi Method

  • 신중한 (국립공주대학교 기계자동차공학부) ;
  • 김도희 (국립공주대학교 기계자동차공학부)
  • Shin, Joong-Han (Division of Mechanical and Automotive Engineering, Kongju National UNIV.) ;
  • Kim, Do-Hee (Division of Mechanical and Automotive Engineering, Kongju National UNIV.)
  • 투고 : 2022.07.01
  • 심사 : 2022.08.09
  • 발행 : 2022.09.30

초록

Laser welding has attracted great attention as a tool used to join electrical steel coils. In this study, laser butt welding for electrical steel coil joining was conducted using the Taguchi method. It was found that structural defects such as void sand cracks were not produced in welds. This indicated that the performance of laser welding in electrical steel was excellent. According to the Taguchi analysis, the total welding quality index (TWQI) considering the bead height and roughness and tensile strength of the weld joint was almost evenly affected by laser power, welding speed, and focal position. The optimum welding conditions to maximize the TWQI were a laser power of 1220W, welding speed of 90 mm/s, and a focal position of 1mm. The regress model predicting the TWQI was also developed using the surface response method. We found that the model predicts measured values with an average error of 16.36%.

키워드

과제정보

이 논문은 2021년도 산업통상자원부 재원으로 한국산업기술평가관리원의 지원 (No. 20017251) 및 2021년도 교육부 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력기반 지역혁신 사업의 지원으로 수행되었습니다. (No. 2021RIS-004).

참고문헌

  1. Oda, Y., Kohno, M. and Honda, A., "Recent development of non-oriented electrical steel sheet for automobile electrical devices," Journal of Magnetism and Magnetic Materials, Vol. 320, No. 20, pp. 2430-2435, 2008. https://doi.org/10.1016/j.jmmm.2008.03.054
  2. Mehdi, M., He, Y., Hilinski, E. J., Kar, N. C. and Edrisy, A., "Non-oriented electrical steel with core losses comparable to grain-oriented electrical steel," Journal of Magnetism and Magnetic Materials, Vol. 491, pp. 165597, 2019. https://doi.org/10.1016/j.jmmm.2019.165597
  3. Xi, C., Wang H., Wu, Y. and Wang, H., "Joining of the Laminated Electrical Steels in Motor Manufacturing: A Review," Materials, Vol. 13, No. 20, pp. 4583, 2020. https://doi.org/10.3390/ma13204583
  4. Cui, R. and Li, S., "Pulsed laser welding of laminated electrical steels," Journal of Material Processing Technology, Vol. 285, pp. 116778, 2020. https://doi.org/10.1016/j.jmatprotec.2020.116778
  5. Shi, S. C., Wang, W. C. and Ko, D. K., "Influence of Inclusions on Mechanical Properties in Flash Butt Welding Joint of High-Strength Low-Alloy Steel," Metals, Vol. 12, No. 2, pp. 242, 2022. https://doi.org/10.3390/met12020242
  6. Vourna, P. and Ktena, A. "Metallurgical, Mechanical and Magnetic Properties of Electrical Steel Sheets in TIG and PLASMA Welding," Key Engineering Materials, Vol. 543, pp. 479-482, 2013. https://doi.org/10.4028/www.scientific.net/KEM.543.479
  7. Hasanniah, A. and Movahedi, M., "Gas tungsten arc lap welding of aluminum/steel hybrid structures," Marine Structures, Vol. 64, pp. 295-304, 2019. https://doi.org/10.1016/j.marstruc.2018.11.013
  8. Hong, K.M. and Shin, Y. C., "Prospects of laser welding technology in the automotive industry: A review," Journal of Material Processing Technology, Vol. 245, pp. 46-69, 2017. https://doi.org/10.1016/j.jmatprotec.2017.02.008
  9. Park, J. S., Woo, I. S. and Lee, J. B., "Effect of Laser Welding Variables on the Formability of Si Added Steel Welds," Journal of Korean Welding and Joining Society, Vol. 24, pp. 15-21, 2006.
  10. Mostaan, H., Saeedpour, P., Ahmadi, H. and Nouri, A., "Laser welding of dual-phase steels with different silicon contents: Phase evolutions, microstructural observations, mechanical properties, and fracture behavior," Material Science and Engineering: A, Vol. 811, pp. 140974, 2021. https://doi.org/10.1016/j.msea.2021.140974
  11. Assunc ao, E., Quintino, L. and Miranda, R., "Comparative study of laser welding in tailor blanks for the automotive industry," The International Journal of Advanced Manufacturing Technology, Vol. 49, pp. 123-131, 2010. https://doi.org/10.1007/s00170-009-2385-0
  12. Oladimeji, O. O. and Taban, E., "Trend and innovations in laser beam welding of wrought aluminum alloys," Welding in the World, Vol. 60, pp. 415-457, 2016. https://doi.org/10.1007/s40194-016-0317-9
  13. Naik, A. B. and Reddy, A. C., "Optimization of tensile strength in TIG welding using the Taguchi method and analysis of variance (ANOVA)," Thermal Science and Engineering Progress, Vol. 8, pp. 327-339, 2018. https://doi.org/10.1016/j.tsep.2018.08.005
  14. Song, H., Dan, J., Li, J., Du, J., Xiao, J. and Xu, J., "Experimental study on the cutting force during laser-assisted machining of fused silica based on the Taguchi method and response surface methodology," Journal of Manufacturing Processes, Vol. 38, pp. 9-20, 2019.
  15. Dhanaraj, P. S. and Rathinasuriyan, C., "Optimization of fiber laser welding parameters for high strength aluminium alloy AA7075-T6," Materials Today: Proceedings, Vol. 52, pp. 283-289, 2022. https://doi.org/10.1016/j.matpr.2021.08.276
  16. Jin, B. J., Park, M. H., Yun, T. J., Kim, I. S., Park, K. Y., Kim, Y. and Yang, H. J., "Optimization of Disk Laser Welding Parameters in Pure Ti Using Taguchi Method," Journal of Welding and Joining, Vol. 36, pp. 34-40, 2018.