DIE FOR MANUFACTURING RODS OR WIRE OF COMPOUND MATERIAL WITH NON-ROUND CROSS-SECTION

摘要

1456735 Extruding dies ASEA AB 9 April 1974 [10 April 1973] 15569/74 Heading B3P An extrusion die for use in a hydrostatic extrusion press to produce a composite aluminium-copper rod or wire has an inlet portion 20 of concave form leading to a rectangular crosssection die orifice 21, the tangents T to the generatrices of the inlet portion surface forming an angle 2a in the range 120 to 180 degrees in a section through the longer diameter of the die orifice. The inlet portion may be spherical, ellipsoidal, hyperbolic or parabolic shape S leading to a frusto-conical inlet portion K whose included angle 2# is from 40 to 120 degrees.