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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on Weld Characteristics Analysis of Dissimilar Material (A105-A312) and Shape Friction Welding for Marine Plant Piping

해양 플랜트 배관용 이종 소재(A105-A312) 및 이종 형상 마찰용접의 용접 특성 분석에 대한 연구

  • Kong, Yu-Sik (Region Collaboration Center of LINC+, Pukyong National Univ.) ;
  • Kim, Tae Wan (Dept. of Mechanical Engineering, Pukyong National Univ.) ;
  • Kwak, Jae Seob (Dept. of Mechanical Engineering, Pukyong National Univ.) ;
  • Ahn, Yong Sik (Dept. of Material Science & Engineering, Pukyong National Univ.) ;
  • Park, Young Whan (Dept. of Mechanical Engineering, Pukyong National Univ.)
  • 공유식 (국립부경대학교 링크플러스사업단) ;
  • 김태완 (국립부경대학교 기계공학과) ;
  • 곽재섭 (국립부경대학교 기계공학과) ;
  • 안용식 (국립부경대학교 재료공학과) ;
  • 박영환 (국립부경대학교 기계공학과)
  • Received : 2019.11.12
  • Accepted : 2019.12.31
  • Published : 2020.03.31
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Abstract

This paper studies the main parameters of tube-to-bar dissimilar material and shape friction welding for piping materials. The weldability of joint parts was investigated with respect to tensile tests, micro-Vickers hardness, the bond of area, and optical microstructure. The specimens are tested as-welded. Optimal welding conditions are n = 2000 rpm, HP = 50 MPa, UP = 100 MPa, HT = 5 sec, and UT = 10 sec when the metal loss (Mo) is 11 mm. Moreover, the same two materials for friction welding are strongly mixed with a well-combined structure of micro-particles without any molten material, particle growth, or defects. Therefore, the expected result of dissimilar material friction welding includes a reduction of cost and material in the welding process.

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References

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