Visual Inspection in Die Casting: What We Check Before the Part Ships

Visual inspection is the final line of defense before a part is shipped—and it plays a bigger role than many realize.

In high-pressure die casting, surface condition often indicates deeper process consistency. What you see on the outside may point to what’s happening inside the mold.

🛠️ What We Visually Inspect:

1. Surface Finish Consistency

   • Check for cold shuts, flow lines, or rough patches

   • Look for inconsistent die spray or thermal fatigue marks

2. Flash and Burrs

   • Parting lines, ejector pin holes, and overflow areas are examined

   • Flashing over 0.1mm is typically rejected or requires trimming

3. Porosity or Pinholes

   • Surface porosity (especially in cosmetic parts) is not acceptable

   • Internal porosity is assessed via sectioning or X-ray/CT if critical

4. Short Fill or Misrun

   • Check corners, thin walls, and deep features for incomplete fill

5. Damage from Handling or Ejection

   • Dents, drag marks, or knocks from poor part handling are flagged

6. Machining Features (if applicable)

   • Threads, tapped holes, milled faces are checked for burrs or chipping

At LVIO Precision, we implement a 100% visual inspection for all cast parts prior to packaging.

Parts are reviewed under adequate lighting by trained inspectors, with defined acceptance criteria.

For critical dimensions or appearance surfaces, we apply sampling plans (AQL-based or customer-defined) and can support with dimensional reports or even 2D/3D scans.