Transactions of Materials and Heat Treatment

Title：Simulation analysis on electric upsetting forming process of exhaust valve

Authors： Lin Hong Kong Fanqun

Unit： Chongqing Industry Polytechnic College Dongfeng Automobile Co. Ltd.

KeyWords： exhaust valve multi-field coupling numerical simulation temperature filed

ClassificationCode：TG376

year,vol(issue):pagenumber：2014,39(11):125-129

Abstract：

The electrical-thermal-mechanical multi-field coupling model for electric upsetting forming process of exhaust valve was established by the Marc software, and the quantitative analysis on main process-controlling parameters was further conducted. The electric upsetting forming process of a medium size exhaust valve was investigated, and the numerical simulations of forming process, temperature field, equivalent stress field, equivalent plastic strain field and metal flowing line distribution of exhaust valve were further carried on. The rule and characteristics of electric upsetting forming process were investigated. Then the numerical simulation parameters were verified by experimental results, and it was found that the experimental “garlic” shape had a high similarity with the simulated one. The conclusion shows that this coupling model can represent the actual forming process of valve electric upsetting very well, and it also can be used for electric upsetting processes of other products as an effective numerical simulation method.

Funds：

国家科技重大专项(G09003.8-1)；重庆市自然科学基金重点项目（CSTC,2009BA4065）

林洪（1973-），女，学士，讲师

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