Transactions of Materials and Heat Treatment

Title：Stamping of fender with long nose for passenger vehicle

Authors：

Unit：

KeyWords：

ClassificationCode：TG386.3

year,vol(issue):pagenumber：2021,46(1):83-88

Abstract：

For fender with long nose of passenger vehicle, the surface curvature changes and the surface change characteristics near the main features were analyzed and the ratio of length to height for the surface was proposed as an index to judge the degree of surface change. The formability problem of fender was analyzed, and the process supplement and drawing bead were adjusted to control the flow direction of slip line and suppress the occurrence of surface quality defects by the method of numerical simulation. The unequal height of shaping surface and the V-shaped feature could cause folding during the shaping process. This defect could be eliminated by adjusting the bracket installation structure and increasing the process gap. The nose of fender was easy to lose stability during the stamping process, resulting in distortion and springback. By compensating the process digital model, the tolerance could be controlled within ±0.5 mm. The results of verification test show that the actual size qualification rate of fender part reaches 92%, and the surface of A-side and the key matching surface are smooth, and the quality are good.

Funds：

基金项目:广西创新驱动发展专项课题（桂科AA18118040）；柳州市科技计划课题（2018AD50301）

作者简介：沈云啸（1979-），男，硕士，高级工程师 E-mail：wei6.wei@sgmw.com.cn

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