Multi-Objective Optimization of Permanent Mold Gravity Casting Process of Aluminum Alloy Brake Calipers
The permanent mold gravity casting process of aluminum alloy brake calipers was analyzed by numerical simulation.The shrinkage porosity defects distribution of the brake caliper was predicted.An improved cooling scheme was added by analyzing the causes.Based on this,the multi-objective optimization of the process parameters was performed by using orthogonal tests.The optimal process parameters were:pouring time of 28 seconds,pouring temperature of 700℃,die preheating temperature of 300℃,cooling water temperature of 35℃.The results showed that the optimized brake caliper casting had no shrinkage porosity defects.The feasibility of this optimization process was verified by production trial.
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