Micro-structure and Air-tightness of Squeeze Casting Motor housing for New Energy Vehicle

International Conference on Computer Information and Automation Engineering

计算机科学;运输工程

Jiang, Y.F.^1 ; Kang, Z.Q.^1 ; Jiang, W.F.^1 ; Wang, K.W.^1 ; Sha, D.L.^1 ; Li, M.L.^2 ; Sun, J.^2

School of Mechanicalengineering, JiangSu University, Zhenjiang

212013, China^1

SuZhou SanJi Foundry Equipment CO., LTD, SuZhou

215105, China^2

关键词: Automobile parts;    Casting process parameters;    Casting temperatures;    Increase in pressure;    Material structure;    Mold temperatures;    New energy vehicles;    Pouring temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/359/1/012042/pdf
DOI  :  10.1088/1757-899X/359/1/012042

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In order to improve the performance of automobile parts, the influence of squeeze casting process parameters on casting defects, material structure and air-tightness of aluminum alloy motor housing for new energy vehicle was studied. The results show that the density of the castings increases with the increase in pressure and mold temperature. With increase in pouring temperature, it increases first and then decreases. Pressure has the greatest influence on the density of the castings. Under a certain pressure, with moderate increase in casting temperature and mold temperature, the grain growth begins to increase; the dendrites become less, the new Al grains are spherical and granular, the micro-structure is uniform. Also, with increase in pressure, this effect is more pronounced, the air-tightness of castings improve. In conclusion, when the pressure is 110MPa, pouring temperature is 680° C, mold temperature is 280° C, pressure holding for 30s, and punch speed of 0.1m/s, there is no clear shrinkage in the casting, the structure is uniform, the qualified rate of air-tightness of production reaches 86%, and the performance is excellent.