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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10358691 B1

PDFFull Text
Date of Patent:
Jul. 23, 2019

Filed:

Dec. 23, 2014

Apparatus for continuous annealing of strip and method for continuous annealing of same

Applicant:

Posco, Pohang-si, KR;

Inventors:

Jai-Hyun Kwak, Gwangyang-si, KR;

Kyoo-Young Lee, Gwangyang-si, KR;

Hang-Sik Cho, Gwangyang-si, KR;

Joo-Hyun Ryu, Gwangyang-si, KR;

Man-Young Park, Gwangyang-si, KR;

Assignee:

POSCO, Pohang-si, KR;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Jenny R Wu

Int. Cl.
CPC ...
C21D 9/52 (2006.01); C21D 9/573 (2006.01); C21D 9/60 (2006.01); C21D 1/52 (2006.01); C21D 1/42 (2006.01); C21D 1/34 (2006.01); C21D 1/60 (2006.01); C21D 1/613 (2006.01); C21D 1/773 (2006.01); C22C 38/14 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C21D 9/56 (2006.01); C21D 1/26 (2006.01); C21D 1/40 (2006.01);
U.S. Cl.
CPC ...
C21D 9/52 (2013.01); C21D 1/26 (2013.01); C21D 1/34 (2013.01); C21D 1/40 (2013.01); C21D 1/42 (2013.01); C21D 1/52 (2013.01); C21D 1/60 (2013.01); C21D 1/613 (2013.01); C21D 1/773 (2013.01); C21D 9/56 (2013.01); C21D 9/561 (2013.01); C21D 9/573 (2013.01); C21D 9/60 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/14 (2013.01); C21D 2211/005 (2013.01); Y02P 10/253 (2015.11);
Abstract

The present invention relates to an apparatus for continuous annealing of a strip, capable of manufacturing a high-strength and highly ductile cold-rolled steel sheet having both excellent strength and ductility, and to a method for continuous annealing of a strip. The continuous annealing apparatus, according to the present invention, is capable of continuous annealing by cooling after heating, and then reheating, unlike an existing continuous annealing apparatus which heats only once and then cools or provides an overaging treatment. As a result, the continuous annealing apparatus, according to the present invention, can preliminarily render a homogeneous texture or control the texture as desired, and then perform another reheating heat treatment to stabilize the texture or control the shape thereof to a desired state. Also, provided is a continuous annealing apparatus and a continuous annealing method using the apparatus, the continuous annealing apparatus also capable of manufacturing high-strength steel having excellent processability and strength by using a low alloy, and capable of manufacturing a zinc-plated strip having excellent plated surfaces by controlling the thickness of elements and oxides enriched on the surface of the strip.

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