挤压工艺参数对拐角长悬臂空心铝型材出口截面流速和温度分布的影响
发布时间：2019-02-24 20:34
【摘要】：以拐角长悬臂空心铝型材为例,使用Hyper Xtrude分析软件对其挤压过程进行数值模拟,设计正交试验研究了挤压速度、棒料预热温度、挤压筒预热温度、模具预热温度、棒料直径、棒料长度等工艺参数对型材出口截面流速均方差(SDV)和温度均方差(SDT)的影响规律。结果表明:通过极差分析及再次模拟确定最优方案为:挤压速度1 mm·s~(-1),棒料预热温度440℃,挤压筒预热温度420℃,模具预热温度400℃,棒料直径Φ150 mm,棒料长度450 mm,对应的SDV与SDT分别仅为1.3680和1.9130,保证挤出型材获得高的综合质量。通过方差分析得到挤压速度对SDV的影响度及棒料预热温度对SDT的影响度分别高达67.50%和76.41%,定量地表明挤压速度和棒料预热温度分别是影响型材外观质量和内部组织的最主要工艺参数。工厂挤压出的合格产品验证了最优方案的可靠性。
[Abstract]:Taking long cantilever hollow aluminum profile at corner as an example, the extrusion process was simulated by Hyper Xtrude software. The extrusion speed, preheating temperature of bar, preheating temperature of extruding tube, preheating temperature of die, diameter of rod were studied by orthogonal test. The influence of technological parameters such as bar length on the flow rate mean square (SDV) and temperature mean square (SDT) at the exit section of the profile was studied. The results show that the optimum scheme is as follows: extrusion speed 1 mm s ~ (-1), bar preheating temperature 440 鈩，
本文编号：2429906
[Abstract]:Taking long cantilever hollow aluminum profile at corner as an example, the extrusion process was simulated by Hyper Xtrude software. The extrusion speed, preheating temperature of bar, preheating temperature of extruding tube, preheating temperature of die, diameter of rod were studied by orthogonal test. The influence of technological parameters such as bar length on the flow rate mean square (SDV) and temperature mean square (SDT) at the exit section of the profile was studied. The results show that the optimum scheme is as follows: extrusion speed 1 mm s ~ (-1), bar preheating temperature 440 鈩，
本文编号：2429906
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