Title:
DIES FOR SHEAR DRAWING
Document Type and Number:
WIPO Patent Application WO/2010/074438
Kind Code:
A9
Abstract:
The present invention is aimed at providing dies for shear drawing, which are capable of continuous drawing and shear deformation at the same time. The invention relates to the dies for shear drawing which comprises a material processing channel where materials are sheared and drawn while passing therethrough, wherein the processing channel comprises an inlet path located in the front and an outlet path located in the rear in consideration of the moving direction of the materials: the inlet and outlet paths are connected to each other for the axes of both paths to cross each other at a certain angle; and the processing channel includes a cross-section decreasing area where the cross-section of the outlet path decreases more than the cross-section of the inlet path to allow the materials to be discharged from the exit of the outlet path filled with the materials. The invention enables continuous shear drawing, wherein the dies are easily filled with the materials during shear drawing, thereby obtaining a constant aspect ratio of the cross-section of the materials over the whole length thereof after shear drawing.
Inventors:
RHEE KI-HO (KR)
SON IL-HEON (KR)
HWANG JOONG-KI (KR)
LEE DUK-LAK (KR)
SON IL-HEON (KR)
HWANG JOONG-KI (KR)
LEE DUK-LAK (KR)
Application Number:
PCT/KR2009/007399
Publication Date:
August 19, 2010
Filing Date:
December 10, 2009
Export Citation:
Assignee:
POSCO (KR)
RHEE KI-HO (KR)
SON IL-HEON (KR)
HWANG JOONG-KI (KR)
LEE DUK-LAK (KR)
RHEE KI-HO (KR)
SON IL-HEON (KR)
HWANG JOONG-KI (KR)
LEE DUK-LAK (KR)
International Classes:
B21C3/02
Attorney, Agent or Firm:
C&S LOGOS PATENT AND LAW OFFICE (KR)
특허법인 씨엔에스·로고스 (KR)
특허법인 씨엔에스·로고스 (KR)
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