Transactions of Materials and Heat Treatment

Title：Influence of internal pressure loading path on quality of automobile front transom in hydroforming process

Authors： DU Hua XUE Ke-min ZHOU Lin YU Jia HUANG Yong(School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China)

Unit：

KeyWords： hydroforming automobile front transom loading path

ClassificationCode：TG394

year,vol(issue):pagenumber：2008,33(6):78-81

Abstract：

In order to investigate the effect of process parameters on hydroforming of 3A21 aluminum alloy,the internal pressure loading path of hydroforming automobile front transom with profiled cross-section was studied experimentally in this paper.The formed appearance and distribution of wall thickness of two kinds of loading path were analyzed and compared.Through this investigation,it is revealed that bilinear loading path is much superior than linear loading path in formed appearance,distribution of wall thickness and can prevent defect.The thinnest thickness zone of this kind of item appears in the arc transition zone and it is easiy to have bursting defect.It is known that thickness of the zone is decreased by 12% even in the bilinear loading path.

Funds：

安徽省“十一五”科技攻关项目(06012150C)

Reference：

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