FIELD: metal forming.
SUBSTANCE: invention relates to metal forming. Method of pneumatic thermal forming of sheet billet in superplasticity mode includes arrangement of billet in die tooling matrix. Billet is heated to superplasticity temperature and deformed by working medium pressure. Slots are made in the flange zone of the billet. Heat-resistant gas-impermeable resilient film is placed over workpiece for sealing of deforming gas medium action zone, which provides movement of workpiece material from workpiece flange zone to zone of maximum deformations.
EFFECT: technical result of the invention is to reduce the thickness variation of the part in the deformed zone and to seal the working medium.
1 cl, 2 dwg
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