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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Characteristic Analysis of Resistance Spot Welding between Dissimilar Materials of 1.035mm Laminated Vibration Damping Steel with 35㎛ Viscoelastic Resin

35㎛ 점탄성수지가 적용된 1.035mm 제진강판의 이종소재간 저항점용접 특성분석

  • 배기만 ((주) 일지테크 기술연구소) ;
  • 백종진 ((주) 일지테크 기술연구소) ;
  • 신창열 ((재) 경북하이브리드부품연구원) ;
  • 김승경 (부산대학교 융합학부) ;
  • 강명창 (부산대학교 융합학부)
  • Received : 2021.07.28
  • Accepted : 2021.11.02
  • Published : 2021.12.31
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Abstract

Recently, owing to the high demand for eco-friendly cars in the automotive industry, noise and vibrations have become major challenges. The use of laminated damping steel is increasing in response to these demands. Laminated damping steel is primarily used in sound insulation plates. The vibration energy is converted into thermal energy due to the viscoelastic resin being located between two steel sheets and being able to damp the vibrations when an external force, such as, noise or vibration is applied to the steel plate. Laminated damping steel is chiefly applied to dash panels in automotive body parts, and because of its structure, junction technology for bonding with other components is necessary. However, there has not been sufficient research conducted on junctions. In this study, regardless of the electrode shape, in the range of 4.0 ~ 8.0 kA welding current, the same welding force and welding time were applied which were 2.8 kN and 200 m/s (12 cycles) and the tensile shear load and nugget size were analyzed after the resistance spot welding between different materials of laminated damping steel with a thickness of 1.035 mm. The results show that in the range of 5 ~ 8 kA welding current, 1.035 mm laminated damping steel meets the MS181-15 standard, which is the technical standard of Hyundai-Kia Motors.

Keywords

Acknowledgement

본 연구는 2021년도 산업통상자원부 소재부품기술개발사업(20017415) 연구비 지원에 의한 연구임.

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