Workpieces are laid on one side of molds and sealed inside vacuum bags. Vacuum pumping inside the bags applies extra pressure on the parts, tightly attaching workpieces to molds. It supports manufacturing composite components with various shapes.

Heated or cooled gas circulates at high speed inside the autoclave, maintaining nearly identical gas temperature at all positions. With properly structured molds, temperature differences across components remain minimal during heating and cooling cycles. Specially designed internal air ducts ensure evenly distributed pressure, allowing workpieces to cure and form under consistent pressure everywhere.

Hot press autoclaves feature large internal capacity. Two or more layers of molds can be loaded in a single batch, and different components can be cured simultaneously. Multiple parts are produced at once, shortening production cycles and boosting overall efficiency.

Temperature and pressure inside the autoclave are uniform, adjustable and controllable, delivering consistent quality and stable mechanical performance for finished parts. The autoclave molding process is adopted for most high-load composite components used in aerospace applications.