EXTRUSION DIE AND METHOD FOR EXTRUDING A ROTOR SHAFT FOR A WIND TURBINE GENERATOR

摘要

An extrusion die for radial extrusion of a rotor shaft for a wind turbine generator has a body and a mandrel received in the body. The mandrel and body cooperatively define a tubular interior chamber. A punch is received in the tubular interior chamber and is moveable with respect to body and mandrel. A radial extrusion insert has a radial interior chamber in communication with the tubular interior chamber. The radial extrusion insert includes an arcuate edge disposed in a transition area between the tubular interior chamber and the radial interior chamber.