Title:
DIES FOR SHEAR DRAWING
Document Type and Number:
WIPO Patent Application WO/2010/074438
Kind Code:
A2
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 (1 Koedong-dong Nam-g, Pohang Kyungsangbook-do 790-300, 790-300, KR)
이기호 (경상북도 포항시 남구 괴동동 1번지 주식회사 포스코내, 790-300 Kyungsangbook-do, 790-300, KR)
SON, Il-Heon (1 Koedong-dong Nam-g, Pohang Kyungsangbook-do 790-300, 790-300, KR)
손일헌 (경상북도 포항시 남구 괴동동 1번지 주식회사 포스코내, 790-300 Kyungsangbook-do, 790-300, KR)
이기호 (경상북도 포항시 남구 괴동동 1번지 주식회사 포스코내, 790-300 Kyungsangbook-do, 790-300, KR)
SON, Il-Heon (1 Koedong-dong Nam-g, Pohang Kyungsangbook-do 790-300, 790-300, KR)
손일헌 (경상북도 포항시 남구 괴동동 1번지 주식회사 포스코내, 790-300 Kyungsangbook-do, 790-300, KR)
Application Number:
KR2009/007399
Publication Date:
July 01, 2010
Filing Date:
December 10, 2009
Export Citation:
Assignee:
POSCO (1 Koedong-dong, Nam-guPohang, Kyungsangbook-do 790-300, 790-300, KR)
주식회사 포스코 (경상북도 포항시 남구 괴동동 1번지, 790-300 Kyungsangbook-do, 790-300, KR)
RHEE, Ki-Ho (1 Koedong-dong Nam-g, Pohang Kyungsangbook-do 790-300, 790-300, KR)
이기호 (경상북도 포항시 남구 괴동동 1번지 주식회사 포스코내, 790-300 Kyungsangbook-do, 790-300, KR)
SON, Il-Heon (1 Koedong-dong Nam-g, Pohang Kyungsangbook-do 790-300, 790-300, KR)
주식회사 포스코 (경상북도 포항시 남구 괴동동 1번지, 790-300 Kyungsangbook-do, 790-300, KR)
RHEE, Ki-Ho (1 Koedong-dong Nam-g, Pohang Kyungsangbook-do 790-300, 790-300, KR)
이기호 (경상북도 포항시 남구 괴동동 1번지 주식회사 포스코내, 790-300 Kyungsangbook-do, 790-300, KR)
SON, Il-Heon (1 Koedong-dong Nam-g, Pohang Kyungsangbook-do 790-300, 790-300, KR)
International Classes:
B21C3/02
Attorney, Agent or Firm:
C&S LOGOS PATENT AND LAW OFFICE (13th Floor, Seocho-Pyunghwa Building1451-34 Seocho-dong, Seocho-gu, Seoul 137-070, 137-070, KR)
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