Research on Deformation Resistance Process of Al-Si Alloy Large Thin Wall Castings
The filling and solidification processes of castings were simulated using Novacast software,and the sand cores were produced using a 3DP sand mold printer and melted and poured in a differential pressure equipment furnace.Due to the lack of protrusions and ring ribs inside the cabin,thermal deformation is prone to occur during casting and heat treatment.To address this issue,the process plan has been modified by adding anti deformation rings on the outer surface of the cabin to prevent overall distortion of the casting.The state of adding anti deformation rings to the casting has been simulated to ensure that the internal quality of the casting meets the requirements.After adding anti deformation fixtures,the deformation of the inner cavity size is controlled within±0.5 mm,ensuring that the casting size is guaranteed and solving the deformation problem of the large thin-walled aluminum silicon alloy casting during casting and heat treatment.
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