锻压技术

汽车轮毂用改性镁合金锻造工艺郝孟军，宫涛，代艳霞

英文标题：Modified magnesium alloy forging process for automobile hub

作者：郝孟军宫涛代艳霞

单位：宜宾职业技术学院

分类号：TG319

出版年,卷(期):页码：2019,44(4):22-27

摘要：

以应用于汽车轮毂的改性镁合金AZ80-0.5V-0.1Ti为例，通过模拟计算和试验的方法，研究了成形温度、模具工作速度、下模窗口处圆角半径等工艺参数对镁合金轮毂锻造的影响，并对其结果进行对比分析，获得了优良的镁合金轮毂锻造工艺参数。通过试验验证了仿真计算的有效性，其结果表明：坯料温度＜370 ℃时，锻造镁合金轮辋处产生开裂，坯料温度＞390 ℃时，窗口部位出现裂纹；模具工作速度为 5~7 mm·s-1时，镁合金轮毂锻造成形质量较好；下模窗口处圆角半径为20 mm 时，镁合金轮毂质量较好。其方法和思路可为汽车轮毂及相似产品的工艺参数设计和优化提供一定的参考和借鉴。

For the modified magnesium alloy AZ80-0.5V-0.1Ti used in automobile hub, the influences of process parameters such as forming temperature, working speed of die and corner radius of lower die window on magnesium alloy hub forging were studied by simulation calculation and experiment methods, and the results were compared and analyzed to obtain the excellent process parameters of magnesium alloy hub forging. Then, the validity of the simulation calculation was verified by experiments. The results show that when the billet temperature is less than 370 ℃, the rim of forged magnesium alloy cracks, and when the billet temperature is higher than 390 ℃, the window cracks. Furthermore, when the working speed of die is 5-7 mm·s-1, the forging quality of magnesium alloy hub is better, and when the corner radius of lower die window is 20 mm, the quality of magnesium alloy hub is better. Thus, the method and thinking can provide some references for the process parameter design and optimization of automobile hub and similar products.

基金项目：

宜宾职业技术学院科学技术研究项目（ybzysc17-31）

郝孟军（1982-）男，硕士，讲师 E-mail：dai_yanxia@sina.com

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