Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Effect of Upset pressure on weldability in the Friction Welding of SM45C-Solid and SM45C-Pipe which is used in the Piston-Rod

경량화 피스톤 로드에 사용되는 SM45C/SM45C-Pipe의 마찰용접시 업셋압력이 미치는 영향

  • 민병훈 (충남대학교 교육대학원) ;
  • 최원용 (충남대학교 기계공학과) ;
  • 민택기 (충남대학교 기계공학과)
  • Published : 2008.10.15
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Abstract

This research is tendencious to manufacture solid piston-rod of shock absorber as hollow piston-rod using friction welding. The SM45C has been welded to the SM45C-pipe in order to investigate the effect of upset pressure on friction weldability. The friction time and upset pressure was variable conditions under the conditions of spindle revolution of 2,000rpm, friction pressure of 55MPa, and upset time of 2.0seconds. Under these conditions, the microstructure of weld interface, tensile fracture surface and mechanical tests were studied of friction weld, and so the results were as follows. When the upset pressure is sufficient, gets the high tensile strength. The optimal welding conditions were n=2,000rpm, $P_1$=55MPa, $P_2$=95MPa, $t_1$=1.5sec, $t_2$=2.0sec when the total upset length is 4.5mm.

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References

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