Forward extrusion processing method and forward extrusion processing apparatus

摘要

PROBLEM TO BE SOLVED: To provide a new extruding method capable of inhibiting an air inclusion failure, extruding equipment, and a method of manufacturing an extruded material.SOLUTION: An extruding method includes a discard cutoff step of cutting off a discard 42 by making a shear blade 10 advance across a shear-planned part S of the discard 42. In the discard cutoff step, the discard 42 is cut off in a state in which an upstream-side end surface 43 of the discard 42 is pressed.SELECTED DRAWING: Figure 4