Measurement of deformation of extrusion die in hot extrusion of aluminum - deformation of extrusion die in aluminum hot extrusion II

摘要

The deformation of extrusion die in a rod (diameter=32.0 mm, extrusion ratio=10) of 1050 aluminum and 6063 aluminum alloy extrusion at 573～623 K is measured at the position 27～45 mm away from the die center by using a laser displacement meter. Because the part around the extrusion die is restrained by the binding force produced by the friction force between the container wall and the billet, it is found that the deformation angle of extrusion die decreases as the measurement point approaches the container wall. The distribution of the deformation angle of the extrusion die in the vicinity of the bearing part in 1050 aluminum extrusion is hardly changed. On the other hand, that in the vicinity of the bearing part in 6063 aluminum alloy extrusion is changed markedly. Since the binding force in the part around the extrusion die decreases as the billet length decreases, and it is assumed that the total deflection of the extrusion die increases gradually.