EXTRUSION METHOD USING AN EXTRUDED MATERIAL WITH AN ASYMMETRIC STRUCTURE, CAPABLE OF IMPROVING THE TEXTURE OF THE EXTRUDED MATERIAL

摘要

PURPOSE: An extrusion method using an extruded material with an asymmetric structure is provided to significantly improve material properties such as formability of an extruded material.;CONSTITUTION: An extrusion method using an extruded material with an asymmetric structure comprises the following steps. An extrusion material is formed by pushing a material which is to be extruded through an extrusion hole (135). The extrusion hole has a variable width and a fixed inclination, and includes a taper unit (134) which has a first inner surface (142) and a second inner surface (143) which are symmetrical across a reference surface including the center axis of the extrusion hole. The material which is to be extruded has a first area which is applied with shear stress by the first surface and a second area which receives shear deformation from the second inner surface; where the first area and the second area are asymmetrical across the reference surface.;COPYRIGHT KIPO 2013