Aluminum Extrusion Troubleshooting

Sandwiching

Problem Description

Layers of material overlap or fold within the extrusion, producing a sandwich-like defect.

Cause–Correction Mapping
  • Excess lubrication
    Cause in: Equipment

      Corrections

    • Decrease lubrication or alternate process.

  • Transverse weld
    Cause in: Die

      Corrections

    • Cut out transverse weld and/or redesign die.

Please note that the information provided in this article is intended to be a general guide to the causes and corrections of Sandwiching in aluminum extrusion. However, it is important to note that the specific cause and correction of any particular defect will vary depending on the specific extrusion process, alloy, and other factors. Therefore, it is important to consult with an experienced and professional engineer to ensure that the correct diagnosis is made and the most suitable correction is chosen.