Abstract
Experiments were conducted to verify the feasibility of cooling process for one aluminum alloy wheel during low-pressure die casting, and the results showed there were some macroporosity defects in the junctions of small spokes. Numerical simulation was implemented, and the rational cooling and insulation process was determined by analyzing the solidification times of different stages at some locations of casting. The simulation and experimental results both demonstrated the insulation spots had a good effect on prolonging solidification time at the location with thin wall thickness, preventing the feeding paths cutoff prematurely and decreasing the size of porosity defects distinctly.
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