关键词: 热挤压, 比能耗, 鲁棒优化, 实验分析, 参数优化

Abstract: In order to reduce the energy consumption of metal extrusion forming stages, a robust optimization model of forming specific energy consumption with the control variables such as initial temperature, length of the aluminum bar, extrusion speed, extrusion temperature, and die angle was proposed by using thermal conductivity and material strength coefficient as disturbance varibales  based on DOE and data analysis model. Furthermore, thermal equilibrium constraints equivalent equation was established in the robust optimization model. Results show that even though the extrusion forming is constrained by thermal equilibrium and controlled by multi-parameters, the proposed robust optimization model also may reduce the energy consumption and simultaneously guarantee the product quality.

Key words: hot extrusion, specific energy consumption, robust optimization, design of experiment(DOE), parameter optimization