PRODUCTION OF STEEPLY CURVED THIN-WALL PRESET-SHAPE PIPES

摘要

FIELD: metallurgy.SUBSTANCE: workpiece is placed inside half-dies of composite female die and centred thereat. Then, said female die is placed in press bottom plate opening to arrange discharge device case thereon, said device having electrodes and working fluid flows openings. The mould is subjected to force so that half-dies are drawn together to make workpiece cross-section shape approximate to that of female die. Thereafter workpiece cavity is filled with working fluid for it to contact with electrodes. Now, high-voltage pulse discharge is fed to discharger electrodes to generate shock wave in fluid so that workpiece is shaped to female die geometry to comply with its inner surface.EFFECT: higher surface quality.8 cl, 4 dwg