METHOD FOR MAKING FORGINGS BY HOT EXTRUSION IN EXTRUDING PRESS HAVING MOVABLE CONTAINER Russian patent published in 2005 - IPC

FIELD: plastic metal working, possibly forging variable cross section parts by extrusion in hydraulic presses with movable container.

SUBSTANCE: method comprises steps of feeding heated blank to container; pressing out blank in container by means of pressure pad and extruding part of blank to die of die set; forming forging having constant cross section part and thickened part that is formed after upsetting remaining portion of blank; placing part of die set in container according to condition of joining their planes. Upsetting of remaining portion of blank for forming thickened part of forging is realized in cavity between joined planes of die set unit and container. Said cavity is formed due to moving die set unit relative to container before forming thickened part of forging. Upsetting operation is realized due to simultaneous motion of pressure pad and container.

EFFECT: possibility for making forging with complex outer and inner configurations, simplified assortment of technological tools, enhanced quality of forging.

2 cl, 9 dwg