Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING METAL

B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads

B21D26/02by applying fluid pressure B21D26/021Deforming sheet bodies B21D26/023including an additional treatment performed by fluid pressure B21D26/025Means for controlling the clamping or opening of the moulds B21D26/027Means for controlling fluid parameters B21D26/029Closing or sealing means B21D26/031Mould construction B21D26/033Deforming tubular bodies B21D26/035including an additional treatment performed by fluid pressure B21D26/037Forming branched tubes B21D26/039Means for controlling the clamping or opening of the moulds B21D26/041Means for controlling fluid parameters B21D26/043Means for controlling the axial pusher B21D26/045Closing or sealing means B21D26/047Mould construction B21D26/049Deforming bodies having a closed end B21D26/051Deforming double-walled bodies B21D26/053characterised by the material of the blanks B21D26/055Blanks having super-plastic properties B21D26/057Tailored blanks B21D26/059Layered blanks B21D26/06by shock waves B21D26/08generated by explosives B21D26/10generated by evaporation B21D26/12initiated by spark discharge B21D26/14applying magnetic forces