METHOD OF HYDROACOUSTIC FORMING OF HOLLOW PARTS Russian patent published in 1994 - IPC

FIELD: part forming. SUBSTANCE: method comprises steps of feeding liquid into a cavity of a tubular blank, placed in a connectable female die, for providing hydrostatic forming of hollow part; freezing the liquid, had been fed, and applying a deformation effort, whose value is more, than an effort, necessary for thawing ice and converting it to the liquid. EFFECT: enhanced quality of parts. 1 cl, 1 dwg