Transactions of Materials and Heat Treatment

Title：Quality stability analysis on tailgate outer panel

Authors： Zhang Feng Wang Ming Sun Weiling Li Kaiwen Fu Dianyu Ling Yunhan

Unit： SAIC-GM-Wuling Automobile Co. Ltd. Beijing Research Institute of Mechanical & Electrical Technology Ltd. Chengdu Ruomu Hande Automation Equipment Co Ltd

KeyWords： tailgate outer panel quality stability winkle crack air cushion pressure temperature of blank holder

ClassificationCode：TG386

year,vol(issue):pagenumber：2020,45(12):90-94

Abstract：

The tailgate outer panel is a four square part with deep drawing, elevation and small angle, and its stability and reliability in mass production are more sensitive. In order to ensure the quality stability, the main factors affecting the quality stability should be found out and controlled. Therefore, the causes of wrinkles and cracks in the mass production process of tailgate outer panle were analyzed by analysis software CAE and stamping experiment, and the stamping experiments under different air cushion pressures were conducted to find that the wrinkle defect was improved by increasing air cushion pressure. Through the inspection of die temperature and the actual production, it is found that the main cause of cracking defects is the increase of blank holder temperature. Finally, it is concluded that the air cushion pressure and the blank holder temperature are the main factors affecting the quality stability of tailgate outer panel, and the stability is improved by reducing the air cushion pressure, using chrome-plated blank holder and increasing the heat dissipation mechanism of dies.

Funds：

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）

张峰（1981-），男，学士，工程师 E-mail：FengZhang@sgmwcomcn

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