Defects Analysis and Improvement for Electricmotorcar Aluminum Alloy Wheel by Gravity Casting

Abstract

Analysis the electricmotorcar aluminum wheels’ hole defect on macroscopic and microscopic, observed that the main defects、concentrated site and the main alloy phase. Combined with the local casting technological parameters, the filling and solidification process of aluminium alloy hub was simulated by using Anycasting software. The results showed that: castings filling smoothly, at the junction of the spoke and the rim and the hub central are easy to produce casting defects. Using the optimized process parameters that is lower pouring temperature, higher pouring height and set the vent to experiment, after comparing the results with the original process known, Shrinkage and porosity defects decreased, but there are still some degree of defects, indicating optimized process parameters have some effect.

Research on Integrated Casting and Forging Process of Aluminum Automobile Wheel

“…Zhang et al [1] developed a mathematical model of the low-pressure die-casting process for the production of A356 aluminum alloy wheels to predict the evolution of temperature within the wheel and die. Wang et al [2] analyzed defects of the electric motorcar aluminum wheels by gravity casting, and they found that the junction of the spokes and the rim, the hub is easy to produce casting defects. Maijer et al [3] studied the effects of microstructure and defects on the impact properties of automotive wheels by low-pressure diecasting and predicted the final microstructure and shrinkage formation by analyzing the filling and solidification behavior of the aluminum alloy wheels.…”