Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Evaluation on Strength Characteristics of Automobile Steel Sheet by Electrode Resistance Spot Weld

전기저항 점용접한 자동차 강판의 강도특성평가

  • Yoon, Han-Ki (Dept. Mechanical Engineering, Dong-Eui University) ;
  • Hu, Kwan-Do (Dept. Mechanical Engineering, Dong-Eui University) ;
  • Ryu, Deok-Seang (Dept. Mechanical Engineering, Graduate School, Dong-Eui University)
  • 윤한기 (동의대학교 기계공학과) ;
  • 허관도 (동의대학교 기계공학과) ;
  • 유덕생 (동의학교 기계공학과 대학원)
  • Received : 2013.06.05
  • Accepted : 2013.08.02
  • Published : 2013.08.31
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Abstract

The resistance spot welding of high strength steel degrades the weldability because of its high strength with rich chemical composition and coating layer to protect from corrosion. And the weld Expulsion is prone to occur and severely affect the nugget guality when the initial gap between automatic borrowing galvanied steel sheets(SGARC35) and Zn-coateel trip steels(GA580TRIP and GA980 TRIP) exist in resistance spot welding(RSW). RSW is one of the most popular welding processes used to join sheet metals. but weld guality sometimes do creases due to welding condition. in this paper to verity tue weldability using spot welding with the hemispherically concaved electrode, tensile shear strength and cross-tensile strength were measured by a universal test machine. in addition, the nugget size on cross-sectional area of the weld was observed by optical and electron microscopy. As a result, the nugget size of this specimen is increased with increasing welding current and Max load of tensile-shear strength is increased with welding current is increasing.

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References

  1. S. S. Park, 2009, "Ms Thesis", Dong-Eui University, Busan, p.34
  2. J. Zou, Q. Zhano, Z. Chem, and J. Mater, 2009 "proc Tech 209", p.4141
  3. H. Zhang, S. Jack H and J. Sen Kara, 2000, "Journal of Manufacturing Science and Engineering", Vol. 122, p.501 https://doi.org/10.1115/1.1285873
  4. J. Senkara, H. Zhang S. J. Hu, and weld J. 83, 2004, 123s
  5. D. Y. Choi and Y. G. Kim, 2009, Journal of KWJS, Vol. 27, pp.125-126
  6. H. Dikawa, G. Murayama, T. Sakiyma, Y. Takahasli and T. Ishikawa, 2007, Nipoon steel Technical Report, Vol. 95, pp.40-45
  7. Jong-Pan Kong and Chung-Yun Kang, 2009, Journal of KWJS, Vol. 29, No. 6, pp 646-652
  8. J. W, Son, J. D. Seo, D. C. Kim and Y. D. Park, 2012, "Corrosion Science and Technology", Vol. 11, No. 1, pp.29-36 https://doi.org/10.14773/cst.2012.11.1.029
  9. N. T. Williams and J. D. Parker, 2004, Int. Mater. Reu, Vol. 49, No. 2
  10. J. Jun and S. phee, 2012, "science and Technology of welding and joining" Vol. 17, No. 4, pp.333-337 https://doi.org/10.1179/1362171812Y.0000000012
  11. J. Shen,. Y. S. Zhang and M.Lai, 2012, "Science and technology of welding and joining", Vol. 15, No. 5, pp.386-392