Transactions of Materials and Heat Treatment

Title：Experimental investigation of viscous pressure forming the ladder part

Authors： Harbin institute of technology Wang Zhongjin Wang Xinyun Wang Zhongren

Unit：

KeyWords： Two steps forming Viscous pressure forming Ladder part

ClassificationCode：TG394

year,vol(issue):pagenumber：2001,26(4):31-33

Abstract：

Viscous pressure forming(VPF)is introduced to manufacture the ladder part Two steps forming method is used to manufacture the ladder part successfully by adjusting the blank holder force(BHF)and the viscous pressure In the first step,a low BHF is suggested for realizing a drawing process, so the blank can be drawn into cavity easily; in the second step, the BHF and the viscous pressure should be increased for obtaining high dimensional accuracy and better tolerance It is shown, using VPF method,the manufactured part has more uniform distribution of thickness,lower thinning ratio, better surface roughness and higher accuracy

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Reference：

1　JLiu,BWesthoff,MAhmetogla,TAltanApplicationofViscousPressureForming(VPF)tolowvolumestampingofDifficult to formingAlloysResultsofPreliminaryFEMSimulationsJournalofMaterialsProcessingTechnology,1996,53(1,3):49～58

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