DEVICE FOR HYDROSTATIC EXTRUSION METAL PROCESSING Russian patent published in 2012 - IPC B21C23/00 

FIELD: metallurgy.

SUBSTANCE: device is intended to improve mechanical properties of extruded metal products and to simplify the design. Device includes chamber of workpiece with cover late, chamber of extrudate, which are filled with working fluid, and conical matrix. Device has vertical axis; workpiece chamber is connected to extrudate chamber via a pipeline providing pressure equalising; in cover plate of workpiece chamber there arranged are two powder charges the first one of which is sufficient for development of pressure exceeding ultimate strength of extruded material; designed for all-round compression of workpiece and extrudate, and the other one - for extrusion; at that, conical matrix has the shape providing the formation of fluid wedge.

EFFECT: enlarging the range of extruded materials at reduction of load on extruder, and improving the quality of the items due to avoiding the formation of cracks and scores in them.

1 dwg