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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Improving the Formability of an SUS316 Plate using Laser-induced Surface Heat Treatment and Cladding Processes

레이저 기반 표면 열처리 및 클래딩을 이용한 SUS 316 판재 성형성 향상

  • Jo, Yeong-Kwan (Graduate School of Mechanical Engineering, Pusan Nat'l UNIV.) ;
  • Yu, Jae-Hyun (Graduate School of Mechanical Engineering, Pusan Nat'l UNIV.) ;
  • Jeong, Ho-Seung (HRD Center for Advanced Mechanical Parts and Materials, Pusan Nat'l Univ.) ;
  • Park, Sang-Hu (School of Mechanical Engineering, ERC/NSDM, Pusan Nat'l UNIV.)
  • 조영관 (부산대학교 기계공학부 대학원) ;
  • 유재현 (부산대학교 기계공학부 대학원) ;
  • 정호승 (부산대학교 첨단기계부품소재 인력양성사업단) ;
  • 박상후 (부산대학교 기계공학부, 정밀정형 및 금형가공연구소)
  • Received : 2019.09.04
  • Accepted : 2019.12.01
  • Published : 2020.02.29
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Abstract

We propose a practical method for increasing formability of a sheet metal plate using laser heat treatment (LHT) and cladding process. In this work, two kinds of process such as laser-induced heat treatment and cladding were utilized to evaluate the effect on formability of SUS316 sheets with different thickness of 1 and 3 mm. By using a vertically line-patterned tensile specimen that was LHTed or cladded on its surface, the process parameters of each surface treating method were studied and optimized. Through the basic test, we knew that the laser power of 900 W and scanning speed of 500 mm/min was the best condition for increase of formability. As the treatment results, ultimate tensile strength and elongation were increased as approximately 2.1 and 7.0%, respectively. To verify the usefulness of this work in industrial cases, we conducted a bulging test using with and without LHTed SUS316 sheet metal blanks. The results show that the bulging height of LHTed sheet was increased by 73% compared to that of the original one.

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References

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