Sun Vacuum Formers Tool Room Engineer Interview Questions and Answers

Wrinkles in metal forming can be caused by various factors such as improper die design, material properties, or process parameters.

• Wrinkles can occur due to insufficient material flow in the die cavity.

• Improper die clearance can lead to wrinkles as the material is not able to flow properly.

• Material properties such as thickness, strength, and ductility can also affect the formation of wrinkles.

• Process parameters like fo...read more

Die clearness is the gap between the punch and die in a stamping operation.

• Die clearness is crucial for proper material flow and preventing tearing or wrinkling of the material.

• It is typically determined based on the material thickness and type being used.

• Examples of die clearness measurements include 10% of material thickness for steel and 20% for aluminum.