基于灰色系统理论的推挤成形工艺参数优化  

Optimization on processing parameters of extrusion technology based on grey system theory

作　　者：林标华[1] 王鸿基[1] 陈晨[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《模具技术》2011年第6期5-8,共4页Die and Mould Technology

摘　　要：以推挤成形过程中压料力、冲头速度、摩擦因数和顶件力工艺参数为自变量,以零件底部膨胀厚度、成形载荷为目标函数,进行正交试验,模拟异形孔推挤成形,获得成形工艺参数与零件底部膨胀厚度、成形载荷的多目标函数值。采用灰色系统理论,分析各成形工艺参数与多目标的平均关联度,优化成形工艺参数,获得较优的成形工艺参数组合。结果表明,优化后的工艺参数减少了零件底部膨胀厚度,降低了成形载荷。The extrusion technology of the shaped hole was numerical simulated by FEM software while blank-holder, punch speed, friction factor, kicking force were independent variables, and the increase in bottom thickness of the part and forming load were objective function, the date about the increase in bottom thickness, forming load were obtained by an orthogonal experiment. The grey system theory was adopted to analyze the average relational degree between process parameters and multi-objective, thus the combination of process parameters were gained through optimization. The result shows that optimized parameters reduce the increase in bottom thickness and forming load.

关 键 词：推挤成形 灰色系统理论 工艺参数 多目标优化 

分 类 号：TG376.3[金属学及工艺—金属压力加工]