Transactions of Materials and Heat Treatment

Title：Forming defect analysis and parameter optimization on new energy vehicle accumulator cylinder based on Taguchi test

Authors： Luo Tingjie Liu Gang

Unit： Guangxi Technological College of Machinery and Electricity

KeyWords： accumulator cylinder Taguchi test weighted scoring method cylinder deformation cylinder wall cracking

ClassificationCode：TG376.2

year,vol(issue):pagenumber：2023,48(2):44-51

Abstract：

Aiming at the problems of cylinder deformation, poor quality of cylinder wall and large load encountered in the production process for a certain type of new energy vehicle accumulator cylinder, the forming process of accumulator cylinder was studied by finite element software Deform-3D. Firstly, the causes of the actual forming defects for accumulator cylinder were analyzed, and the optimization objects and variables of the process were determined. Secondly, the orthogonal test scheme was established based on Taguchi test, and the modeling, simulation and experimental data acquisition of each scheme were completed by UG and Deform-3D. Finally, the different kinds of experimental data were unified by weighted scoring method, and the data was analyzed and optimized by using the expected large characteristic model of signal-to-noise ratio. The simulation and test results show that when the billet temperature is 950 ℃, the mold preheating temperature is 400 ℃, the extrusion speed is 35 mm·s-1 and the working belt length of conves die is 20 mm, it is the optimal process level combination, which can not only solve the problems of accumulator cylinder deformation and cylinder wall cracking, but also reduce the forming load, effectively prevent the mold cracking and prolong the service life.

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作者简介：罗婷劼（1984-），女，学士，讲师，E-mail：ltj198406@163.com；通信作者：刘港（1979-），男，硕士，讲师，E-mail：752962042@qq.com

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