Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
권호 표지

A Study on the Mechanical Properties of the Friction Welding with Hollow and Solid Shaft of SM45C

SM45C의 중실축과 중공축의 마찰용접 특성에 관한 연구

  • 구건섭 (한국폴리텍IV대학 홍성캠퍼스 산업설비자동화과) ;
  • 최원용 (주)코아비스 연구개발팀)
  • Received : 2010.10.26
  • Accepted : 2010.10.29
  • Published : 2010.12.15
Download PDF
⟨ Previous Next ⟩

Abstract

The present study examined the mechanical properties of the friction welding with hollow and solid shaft of SM45, of which the diameter is 25.2mm and 33mm. Friction welding was conducted at welding conditions of 2,000rpm, friction pressure of 50MPa, upset pressure of 70MPa, friction time of 0.4sec to 1.4sec by increasing 0.2sec, upset time of 2.0 sec including variable such as friction time are following. Under these conditions, a tensile test, a hardness test and a microstructure of weld interface were studied. The results were as follows : When the friction time was 1.0 seconds under the conditions, the maximum tensile strength of the friction weld happened to be 1,094MPa, which is 120% compared with the tensile strength of SM45C base metal. The upset length linearly increased as friction time increased. According to the hardness test, the hardness distribution of the weld interface was formed from 475Hv to 739Hv. HAZ(Heat Affected Zone) was formed from the weld interface to 2mm of SM45C.

Keywords

References

  1. Vill, V. I., 1957, "Friction Welding of Metals," Svarochne Proizvodstvo, Vol. 3, No. 9, pp. 8-23.
  2. Lee. S.-Y. and Yun, B.-S., 2001, "Heat Transfer Analysis of Friction Welding of A2024 to SM45C," J. of KSMTE, Vol. 10, No. 1, pp. 65-70.
  3. Jeong, H.-S., 1997, "Fundamentals and Basic Application of Friction Welding," J. of KWS, Vol. 15, No. 6, pp. 1-12.
  4. Spindler, D. E., 1994, "What Industrial Needs to Know about Friction Welding," Welding Journal, Mar, pp. 37-42.
  5. Nicholas, E. D., 1997, "Where Industry Uses Friction Welding," Welding Design and Fabrication, Aug, pp. 74-76.
  6. Jeong, J.-H., 2001, "A study on the Welding Properties of SM25C Carbon Steel Rod and SMn420 Alloy Steel Pipe," A Thesis for a M.S., Chung-Nam University, Republic of Korea.
  7. Oagawa, K., Yamaguchi, H., Kaga, S., and Sakaguchi, K., 1993, "Optimization of Friction welding Condition for S45C Carbon Steel Using a Statical Technique", Transactions of the Japan Welding Society, Vol. 24, No. 2, pp.133-139.