Delta pressure forming

Overview

Delta pressure forming starts with the cylindrical honeycomb barrel which has been formed with an improved drape creep forming process that employs a roller system in place of static weights. The cylindrical barrel is inflated into a die to create the required compound curvature. The operation is conducted in a vacuum furnace at temperatures exceeding 1500°F and the inflation pressure is provided by inert argon gas. Sophisticated forming analyses and special tooling features ensure the honeycomb core and the face sheets are not damaged during the process.

Advantages

  • Precision forming capability
  • Complex geometries

Used on

  • Engine inner wall structures
  • Engine exhausts