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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 9725789 B1

PDFFull Text
Date of Patent:
Aug. 08, 2017

Filed:

Jun. 08, 2012

Apparatus for manufacturing compound powder, method of manufacturing iron-boron compound powder by using the apparatus, boron alloy powder mixture, method of manufacturing the boron alloy powder mixture, combined powder structure, method of manufacturing the combined powder structure, steel pipe, and method of manufacturing the steel pipe

Applicants:

Kee-seok Nam, Gyeongsangnam-do, KR;

Jung-dae Kwon, Gyeongsangnam-do, KR;

Jong-joo Rha, Gyeongsangnam-do, KR;

Hee-chan Ahn, Gyeongsangnam-do, KR;

Tae-su Lim, Gyeongsangnam-do, KR;

Inventors:

Kee-Seok Nam, Gyeongsangnam-do, KR;

Jung-Dae Kwon, Gyeongsangnam-do, KR;

Jong-Joo Rha, Gyeongsangnam-do, KR;

Hee-Chan Ahn, Gyeongsangnam-do, KR;

Tae-Su Lim, Gyeongsangnam-do, KR;

Assignee:

KMT CO., LTD., Gyeongsangnam-do, KR;

Attorneys:

Mayer & Williams, PC

Stuart Mayer

Primary Examiner:

Jessee Roe

Assistant Examiner:

Ngoclan T Mai

Int. Cl.
CPC ...
B22F 9/20 (2006.01); C22C 1/00 (2006.01); F16L 9/14 (2006.01); F16L 57/06 (2006.01); F16L 58/08 (2006.01); F16L 9/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/32 (2006.01); C22C 38/34 (2006.01); C22C 38/36 (2006.01); B22F 9/22 (2006.01); C22C 32/00 (2006.01); C22C 33/02 (2006.01); C22C 1/04 (2006.01); C22C 1/10 (2006.01);
U.S. Cl.
CPC ...
C22C 1/00 (2013.01); B22F 9/20 (2013.01); B22F 9/22 (2013.01); C22C 32/0047 (2013.01); C22C 32/0073 (2013.01); C22C 33/0207 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/32 (2013.01); C22C 38/34 (2013.01); C22C 38/36 (2013.01); F16L 9/02 (2013.01); F16L 9/14 (2013.01); F16L 57/06 (2013.01); F16L 58/08 (2013.01); C22C 1/045 (2013.01); C22C 1/0433 (2013.01); C22C 1/1084 (2013.01); C22C 33/0228 (2013.01); C22C 33/0292 (2013.01);
Abstract

Provided are an apparatus for manufacturing a compound powder, a method of manufacturing an iron-boron compound powder by using the apparatus, a boron alloy powder mixture, a method of manufacturing the boron alloy powder mixture, a combined powder structure, a method of manufacturing the combined powder structure, a steel pipe, and a method of manufacturing the steel pipe The method of manufacturing the boron alloy powder mixture includes: preparing a mixed powder including a boron iron alloy powder and a target powder; heat-treating the mixed powder to boronize at least a portion of the target powder and de-boronize at least a portion of the boron iron alloy powder, thereby de-boronizing the boron iron alloy powder to reduce the melting point of the boron iron alloy powder.

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