METHOD AND APPARATUS FOR METAL FORWARD EXTRUSION

摘要

The invention relates to a method and device is directly lubricated extrusion of metals and alloys with a radial front liner. / p & & p & the method according to the invention consists in menager a gap in the form of a circular ring of frustoconical shape slightly, of constant thickness j and of the reach of h, which is open at the free air, between the end of the container, which is adjacent to its bore and the set of tools are located in the extrusion screw - to -. & / p & & p & in order to facilitate the formation and especially the removal of the sleeve, the spinning device comprises a plurality of blades, located in the gap described ci - the top, whose edge is directed towards the axis of the container and which divide the liner in the same number of "petals" during extrusion.