异形空心铝型材挤压工艺数值模拟及模具结构改进
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摘要
以某异形空心铝型材为研究对象,采用数值模拟软件对其挤压工艺进行模拟,利用塑性成型理论对模拟结果进行分析,根据分析结果,调整阻流块结构尺寸及布置以平衡金属流出模孔的速度,经多次改进后,型材截面上的流速差异率降低至5%以内,满足最优模具设计评判依据。改进后模具生产的型材符合质量要求,减少了试模次数,降低了型材的开发成本。
Taking a special-shaped hollow aluminum profile as the research object,the extrusion process of it was simulated by using simulation software.And the results were analyzed according to the plastic forming theory.In view of the results the velocity difference rate was less than 5% by adjusting the size and location of the baffle block which balancing the flow velocity of the metal.It was met the judgment of the best die design which improved the quality of the forming parts and reduced the cost of the production.
Taking a special-shaped hollow aluminum profile as the research object,the extrusion process of it was simulated by using simulation software.And the results were analyzed according to the plastic forming theory.In view of the results the velocity difference rate was less than 5% by adjusting the size and location of the baffle block which balancing the flow velocity of the metal.It was met the judgment of the best die design which improved the quality of the forming parts and reduced the cost of the production.
引文
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[7]潘卫国.建筑幕墙立柱铝型材挤压过程数值模拟分析和挤压模具工作带优化设计的研究[J].铝加工,2016(2):20-26.
[2]谢水生,刘静安,王志英.铝合金车辆大型材模具的设计与制造工艺研究[J].稀有金属,2004,28(1):146-150.
[3]纵荣荣,郝秋红,韩志君,等.轨道车辆用超宽幅薄壁铝型材挤压过程数值模拟及模具优化[J].塑性工程学报,2015,22(4):39-43,66.
[4]GAMAGE P,XIE S Q.A real-time vision system for defect inspection in cast extrusion manufacturing process[J].International Journal of Advanced Manufacturing Technology,2009,40(1/2):144-156.
[5]吴锡坤.铝型材加工实用技术手册[M].长沙:中南大学出版社,2006:392,470.
[6]陈浩.空心铝合金型材挤压过程数值模拟及模具优化方法研究[D].济南:山东大学,2012:38-39.
[7]潘卫国.建筑幕墙立柱铝型材挤压过程数值模拟分析和挤压模具工作带优化设计的研究[J].铝加工,2016(2):20-26.