Transactions of Materials and Heat Treatment

Title：Forming parameters optimization for aluminum-alloy hood outer based on computer aided test

Authors： Fu Jian Liu Ting Peng Biyou Ye Yigen Zhao Ya

Unit： Xihua University

KeyWords： hood outer aluminum alloy drawing forming parameter optimization computer aided test

ClassificationCode：TG389

year,vol(issue):pagenumber：2014,39(2):31-36

Abstract：

The common quality problems are wrinkle, fracture and spring-back in stamping Al-alloy auto-body panels. Based on computer aided test, the effect of technological parameters and blank shapes on forming quality of an Al-alloy hood outer was studied, and a group of optimizing parameter levers to meet the demand of quality evaluation index were determined. The results show that all level combinations in the experiment plan can well control wrinkle and fracture when forming the panel. The punch-die gap of one blank thickness is propitious to improve the fit-ability between panel and die. The rectangle blank used in forming may reduce the local maximum thinning when forming panel and the spring-back after trimming.The effect of draw-bead height and blank hold force on quantized evaluation indicators is not remarkable, but apropos increasing the blank holder force and the drawbead height will reduce the panel spring-back within a certain degree. The hood outer to meet the demand of quality evaluation index can be produced under the conditions of blank hold force 300 kN, punch-die gap 0.8 mm, draw-bead height 14 mm, (virtual) drawing speed of rectangle blank 3000 mm·s-1.

Funds：

四川省教育厅重点项目（11ZA282）;西华大学“流体及动力机械”省部共建教育部重点实验室学术成果培育项目（SBZDPY-11-16）

傅建（1955-），男，硕士，教授

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