DIE SET FOR EQUAL-DUCT ANGULAR EXTRUSION (VARIANTS),申请号RU20030127957-传众专利搜索

DIE SET FOR EQUAL-DUCT ANGULAR EXTRUSION (VARIANTS)

申请公布号：RU2252094(C1)

申请号：RU20030127957

申请日期：2003.09.16

申请公布日期：2005.05.20

发明人：GOLUBEV P.I.;KORSHUNOV A.I.;BELOUSOV N.I.;POZDOV I.N.

分类号：B21C25/00;B21J5/00;B21J13/02

主分类号：B21C25/00

摘要：FIELD: plastic working of metals with use of intensive plastic deformation, production of nano-crystalline materials with improved mechanical properties. ^ SUBSTANCE: die set includes band in which cone insert having several parts is pressed; lower support; inlet and outlet ducts; ram. According to first variant of invention contours of parts of cone insert are restricted by means of two mutually normal planes and cone surface portion cut by said planes. Crossing line of said planes does not coincide with symmetry axis of cone surface. Inlet duct is formed by faces of cone insert parts arranged normally one relative to other and mutually joined; walls of said duct are in the form of portions of said planes. According to second variant of invention contours of cone insert parts are restricted by radius surface, by two mutually crossing planes and portion of cone surface cut by said planes. Crossing planes are mutually normal or they are inclined one relative to other by angle 120°. Axis of radius surface coincides with crossing line of said planes. Faces of cone insert parts are mutually joined; inlet duct is formed by their radius surfaces and outlet duct is formed by radius grooves. ^ EFFECT: lowered number of parts, reduced consumption of material for making cone insert. ^ 4 cl, 10 dwg