Patent ID: 8516868

Claim:
A die for shear drawing comprising a material processing channel in which a material is sheared and drawn while continuously passing therethrough, wherein the processing channel includes an inlet path positioned at a front end thereof, and an outlet path positioned at a rear end thereof, when viewed from a movement direction of a material, the inlet path and the outlet path are connected to intersect central axes thereof at a certain angle, and the processing channel includes a cross-section reduction segment allowing an outlet cross-sectional area of the outlet path to be smaller than an inlet cross-sectional area of the inlet path to thereby draw out a material from an exit of the outlet path with the material filled therein, wherein the cross-section reduction segment comprises a first cross-section reduction segment formed at one side of the processing channel and a second cross-section reduction segment formed at the other side of the processing channel, wherein any one of the first cross-section reduction segment and the second cross-section reduction segment has one or more cross-section reduction segments, and the other cross-section reduction segment has a curved portion, and wherein the one or more cross-section reduction segments have a slope allowing a channel cross-section of a rear portion to be smaller than that of a front portion when viewed from the movement direction of a material.