Analysis of Casting Process and Structural Optimization of Aluminum Alloy Subframe
Taking into account the difficulties of large volume and uneven wall thickness in the subframe product of AlSi7Mg0.3 aluminum alloy,as well as the local hot spot leading to insufficient shrinkage,a reasonable design of wall thickness and shrinkage channels was carried out for this type of structure.The simulation analysis of casting process simulation,X-ray inspection,mechanical property analysis and physical bench test performance comparison were further verified through experiments.The verification results showed that the local special wall thickness and structural optimization could improve the product strength and meet the durability test requirements of the bench;the rational setting of shrinkage channels,combined with the water cooling process of the casting process,could achieve sequential solidification and effectively reduce shrinkage porosity defects to improve product quality.