Wire Extrusion, Hydrostatic

A hydro­static extrusion process in which material to be drawn and the reel on which it is wound are mounted within a pressure vessel containing pressurized fluid. One end of the wire is placed in a die through which it is forced toward the reel by the pressurized fluid. This wire extrusion process is similar to wiredrawing with the considerable advantage that the reduction per pass is not limited by the same strength restrictions of the wire as it is in wiredrawing. The process also enables the forming of brittle wires that cannot be drawn.