FIELD: metallurgy. SUBSTANCE: apparatus has holder with cavity to locate liquid under pressure, die and located in its working cavity toroidal insert with facing each other surfaces, contacting die and ingot. Insert surfaces generatrixes in cross section 1 are made as arches of circuferences by radius equaled to radius of generatrix of die toroidal working surface ion the line of joining aforesaid surface and inner input area of die. EFFECT: apparatus is used for sheet type pieces extrusion. 4 dwg
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