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《Journal of Shanghai Jiaotong University》 2001-01
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Billets Study During Piston Skirt Forging Process of LD11 Aluminium Alloy

ZHOU Fei 1, PENG Ying hong 1, LEI Jun 2, ZHAO Guo qun 3, RUAN Xue yu 1 (1. Dept. of Plasticity Tech., Shanghai Jiaotong Univ., Shanghai 200030, China; 2. Shanxi Diesel Engine Plant, Xingping,Shanxi 713105; 3. College of Materials Sci. & En  
The metal flow patterns of cylindrical billet and conical billet during their forging processes were analyzed from theory. Their deformation characters were realized. The forging processes of the both kinds of billets were simulated by contrast with FEM and the distributions of their velocity, strain and fibre flown line were gotten. Based on the different influences of these variables to the quality of products, the billet of the piston skirt was selected. At last, the practical forging was carried out with this billet and a product with the exact shape,correct dimension and high quality was obtained. Through the combined technical method with the theory analysis, FEM simulation and practical forging, the billet for the piston skirt forging process was determined. It is proved that this method is suitable for making out metal forming processes.
【CateGory Index】: TG316
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