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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  

Min, Byung-Hoon (충남대학교 교육대학원)
Choi, Won-Yong (충남대학교 기계공학과)
Min, Taeg-Ki (충남대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.17, no.5, 2008 , pp. 36-43 More about this Journal
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.
Keywords
friction welding; shock absorber; piston-rod; SM45C; pipe; upset pressure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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