锻压技术

铝车轮旋压模具设计的热膨胀系数确定

英文标题：Determinations of thermal expansion coefficient of spinning die design for aluminum alloy wheels

作者：张立娟

单位：中国环境管理干部学院

分类号：TG386

出版年,卷(期):页码：2014,39(3):99-103

摘要：

铝车轮旋压模具的首选材料为H13钢，H13钢价格较高，为了降低模具的制造成本，在不影响旋压模具强度和硬度的前提下，旋压模具材料选用5CrMnMo钢，变更后的旋压模具热膨胀系数与H13钢的热膨胀系数存在差别，影响了旋压模具与毛坯的配合。为了重新制定旋压模具设计的热膨胀系数，对5CrMnMo钢旋压模具进行了物理试验和数值模拟分析，确定了旋压模具设计的热膨胀系数。试验结果表明：模具材料选用5CrMnMo钢后，模具的热膨胀系数定为1.0064较为合理，可以大大降低车轮变形程度，提高材料利用率。

Steel H13 with higher price is used for aluminum wheel spinning die.In order to reduce the cost of die and on the premise of not affecting the strength and hardness of spinning die, 5CrMnMo steel was selected as spinning die material. The thermal expansion coefficients of spinning die for 5CrMnMo and steel H13 are different，which affects the cooperation between spinning die and blank. In order to redesign the thermal expansion coefficient of spinning die, physical test and numerical simulation analysis for 5CrMnMo steel of spinning die were conducted，and the thermal expansion coefficient of spinning die was determined. The results show that the mold thermal expansion coefficient of 1.0064 is more reasonable when using 5CrMnMo steel for die material, with which the wheel distortion is significantly reduced and the material utilization is increased.

基金项目：

秦皇岛市科学技术研究与发展计划项目（2012021A122）

参考文献：

［1］孔玲,张立娟,常海平,等.铸旋铝合金轮毂旋压模具设计及压料方式研究[J].制造技术与机床, 2011, (3):142-143, 147.Kong Ling,Zhang Lijuan,Chang Haiping,et al. Study on Al-alloy wheel spinning die and the blank holder mode[J].Manufacturing Technology & Machine Tool,2011, (3):142-143, 147.
［2］张立娟,周宏伟,韩云,等.铸旋铝合金轮毂对旋压设备的需求分析[J].锻压技术,2010, 35(4):175-178.Zhang Lijuan, Zhou Hongwei, Han Yun,et al. Requirement analysis of spin casting aluminum wheel on spinning equipment[J]. Forging & Stamping Technology,2010, 35(4):175-178.
［3］宋鸿武,李昌海,常海平,等.高强韧铝合金轮毂的轻量化铸旋新工艺[J].稀有金属,2012, 36(4):630-635.Song Hongwu，Li Changhai，Chang Haiping, et al. A new cast spinning process for light weight aluminum alloy wheels[J]. Chinese Journal of Rare Metals,2012, 36(4):630-635.
［4］GB／T 7320-2008. 耐火材料热膨胀试验方法[S].GB／T 7320-2008. Refractory materials determination of thermal expansion[S].
［5］GB／T 4339-2008. 金属材料热膨胀特征参数的测定[S]. GB／T 4339-2008. Determination of thermal expansion characteristic parameters of metallic materials[S].

服务与反馈：

【文章下载】【加入收藏】