A batch of castings fails inspection. The surface looks clean, but X-ray or machining reveals dark, irregular patches buried beneath. These slag inclusions cost you yield, rework hours, and a difficult conversation with your customer. If you are reviewing a defect...
You cut open the casting and find shrinkage porosity sitting right under the riser you sized, placed, and calculated with care. The riser modulus checked out. The feeding distance looked fine on paper. So why did it still fail?A riser fails when one critical link in...
Every foundry engineer knows the sinking feeling when X-ray results show that cluster of shrinkage porosity in the exact same spot again. Your first instinct might be to blame the tooling, but most aluminum casting Shrinkage defects are process control problems...
