The invention relates to the technical field of automobile chassis materials, in particular to a preparation method of a high-strength aluminum alloy for an automobile chassis, which is characterized by comprising the following steps: step 1, mixing aluminum powder and manganese powder, and melting at a first temperature to obtain a first mixed material; secondly, the first mixed material is transferred into an alloying furnace, alloy containing rare earth elements, zinc powder, copper powder, titanium powder, silicon powder and molybdenum powder are sequentially added, alloying is conducted at the second temperature, and a second mixed material is obtained; 3, a refining agent and a grain refiner are added into the second mixed material for refining, after refining slag is removed, purging gas is used for degassing operation, and a refined mixed material is obtained; and fourthly, the refined mixed material is injected into a die-casting die cavity in a high-pressure casting mode, and the aluminum alloy is obtained after cooling. The strength and corrosion resistance of the aluminum alloy are enhanced, the plasticity and toughness are improved, the cracking tendency is reduced, and the overall performance of the material is more excellent.
本发明涉及汽车底盘材料技术领域,尤其涉及一种汽车底盘用高强度铝合金的制备方法,其特征在于,步骤包括:步骤一、将铝粉与锰粉混合,于第一温度下进行熔化,得第一混合物料;步骤二、将第一混合物料转移至合金化炉中,依次加入含稀土元素的合金、锌粉、铜粉、钛粉、硅粉、以及钼粉,于第二温度下进行合金化,得第二混合物料;步骤三、向第二混合物料中加入精炼剂以及晶粒细化剂进行精炼,清除精炼渣后,使用吹扫气进行除气作业,得精炼混合物料;步骤四、将精炼混合物料通过高压铸造的方式注入压铸模具型腔中,冷却后即得铝合金;增强了铝合金的强度、耐蚀性、提高塑性和韧性,减少裂纹倾向,使得材料的整体性能更为优越。
Preparation method of high-strength aluminum alloy for automobile chassis
一种汽车底盘用高强度铝合金的制备方法
2024-10-11
Patent
Electronic Resource
Chinese
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