Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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The Optimization of Laser Welding Process for Electrical Steel Coil Joining Using the Taguchi Method

다구찌 방법을 이용하는 전기강판 코일 연결용 레이저 용접 공정의 최적화

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

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%.

Keywords

Acknowledgement

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).

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