EXTRUSION PRESS DIE ASSEMBLY Russian patent published in 2018 - IPC B21C25/08 

FIELD: pressing.

SUBSTANCE: invention relates to pressing. Die assembly comprises a plurality of die plates forming a die body. Die body has an entrance and an exit having a diameter smaller than the entrance, with a tapered surface between the entrance and the exit. Each die plate has a centre bore with a tapered interior surface around the centre bore, and the interior surfaces form the tapered surface that extends from the entrance to the exit. Base is coupled to the die body, and rotation of the base causes rotation of the die body. Billet pressed into the die body is heated by friction between the interior surface and an outer surface of the billet. Billet is heated to a deformable temperature and is extruded into a tube product as the billet is pressed from the entrance to the exit of the die body.

EFFECT: invention enables continuous pressing of a plurality of billets on compact equipment.

44 cl, 13 dwg