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摘要：
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汽车控制臂是汽车悬架系统的关键零部件之一，为满足对刚度、强度和使用寿命的要求，现针对某锻造铝合金控制臂，采用数值模拟与工艺实验相结合的方法，对其锻造工艺进行分析，研究模具温度对锻造铝合金控制臂的影响，观察锻件组织。采用单一变量法，分别对模具温度为200，300，400 ℃的锻造过程进行模拟，观察锻件温度变化情况。模拟结果表明，当模具温度在200~400 ℃区间内，温度每升高100 ℃，终锻件温度会提高5 ℃左右。通过锻造实验验证模拟结果，对锻件进行低倍组织观察，可知适当提高模具温度有利于改善粗晶层厚度，为此类零件锻造工艺参数的制定提供了指导。
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Automobile control arm is one of the key components of automobile suspension system. In order to meet the requirements of stiffness, strength and service life, for a forged aluminum alloy control arm, its forging process was analyzed by combining numerical simulation with process experiment, the influence of mold temperature on the forged aluminum alloy control arm was studied, and the microstructure of forgings was observed. Then, the forging process was simulated under the mold temperature of 200, 300 and 400 ℃ respectively by the single variable method, and the change of forging temperature was observed. The simulation results show that when the mold temperature is between 200 ℃ and 400 ℃, the temperature increases by 100 ℃, and the final forging temperature increases by about 5 ℃. Furthermore, the simulation results were verified by the forging experiments, and the low magnification microstructure experiments were performed on the forgings. It is concluded that the appropriate increase of the mold temperature is conducive to improving the thickness of coarse grain layer, which provides guidance for the formulation of forging process parameters of such parts.
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基金项目：
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国家科技重大专项项目（2018ZX04044-001）；芜湖市科技计划项目（2018cg25）
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作者简介：
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高丙坤（1994-），女，硕士研究生，E-mail：605897612@qq.com；通讯作者：边翊(1976-)，男，硕士，研究员，E-mail：bianyi@brimet.ac.cn
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