挤压模型 - 有色金属科学与工程.DOC

挤压工艺参数对挤压过程影响规律的仿真模拟研究 钟建华,袁志燕,刘艳霞，林师朋 （江西理工大学材料科学与工程学院，江西 赣州 341000） 摘要：研究对象是某6063工业铝型材，将建立好的三维模型导入到有限元Altair Hyperxtrude分析软件进行仿真模拟，通过改变型材挤压工艺参数（挤压比、棒料预热温度、模具预热温度、挤压筒预热温度、挤压速度），研究其对金属流动的规律，基于直交表Taguchi方法分析各挤压工艺参数对型材截面速度分布和挤压力的影响规律，结果表明：对于型材截面流动均匀程度指标参数，最佳挤压参数为挤压棒料外径为205mm、挤压垫速度3.2mm/s、棒料预先加热温度为480℃、挤压模具预先加热温度为470℃、挤压筒预先加热温度为440℃；对于挤压力指标参数，棒料外径为200mm、挤压垫速度为1.4 mm/s、棒料预先加热温度490℃，挤压模具预先加热温度为480℃、挤压筒预先加热温度为460℃。 关键字：Altair Hyperxtrude；挤压过程；仿真模拟；型材截面速度；挤压力 Research on effects of extrusion process parameters on the extrusion process by numerical simulation ZHONG Jian-hua，YUAN Zhi-yan， （School of Material Science and Engineering , Jiangxi University of Science and Technology, Ganzhou 341000,China） Abstract:The present paper??deals with 6063 industrial aluminum profile, The three-dimensional model was imported into Altair Hyperxtrude software for simulation analysis. The influence of extrusion ratio, billet preheating temperature, die preheating temperature, extrusion tube preheating temperature and extrusion speed on metal flow were investigated in the present work. The influence of extrusion?parameters on the velocity distribution?on the profile cross sections and the ram force were analyzed based on orthogonal table Taguchi methods.The results show that for the index parameters of velocity distribution on profile cross section , the optimum parameters of the extrusion is that the billet diameter is 205 mm; the extrusion speed is 3.2 mm/s; the preheat temperature of the billet is 480 ℃;the preheat temperature of extrusion die is 470 ℃; the preheat temperature of the container 440 ℃, For the index parameters of the ram force, the billet diameter is 200 mm;the extrusion speed is 1.4mm/s; the preheat temperature of the billet is 490 ℃; the preheat temperature of extrusion die is 480 ℃; the preheat temperature of the container 460 ℃ Key words: Extrusion process; simulation; the velocity on the profile; ram force 0. 引言 我国拥有极其丰富的铝矿资源，铝合金型材已被各领域广泛应用。铝合金型材生产过程中最主导技术以及关键的核心