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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 9541281 B1

PDFFull Text
Date of Patent:
Jan. 10, 2017

Filed:

Apr. 08, 2013

High-temperature piping product and method for producing same

Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Shinya Imano, Hitachi, JP;

Hiroyuki Doi, Tokai-mura, JP;

Jun Sato, Yasugi, JP;

Assignee:

MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;

Attorney:

Volpe and Koenig, P.C.

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
F22B 37/04 (2006.01); F16L 9/02 (2006.01); B23K 31/02 (2006.01); B32B 1/08 (2006.01); B32B 15/01 (2006.01); C22C 19/05 (2006.01); C22C 19/03 (2006.01); B32B 15/04 (2006.01); C22F 1/10 (2006.01); F22B 37/10 (2006.01); B23K 35/30 (2006.01); B23K 35/40 (2006.01); B23K 35/02 (2006.01); B23K 9/028 (2006.01); B23K 9/167 (2006.01); B23K 9/23 (2006.01); C21D 6/02 (2006.01); C21D 8/10 (2006.01); C21D 9/08 (2006.01); F16L 13/02 (2006.01); C21D 6/00 (2006.01);
U.S. Cl.
CPC ...
F22B 37/04 (2013.01); B23K 9/0282 (2013.01); B23K 9/167 (2013.01); B23K 9/23 (2013.01); B23K 31/027 (2013.01); B23K 35/0261 (2013.01); B23K 35/304 (2013.01); B23K 35/3033 (2013.01); B23K 35/40 (2013.01); B32B 1/08 (2013.01); B32B 15/01 (2013.01); B32B 15/043 (2013.01); C21D 6/02 (2013.01); C21D 8/10 (2013.01); C21D 9/08 (2013.01); C22C 19/03 (2013.01); C22C 19/05 (2013.01); C22C 19/051 (2013.01); C22C 19/055 (2013.01); C22C 19/056 (2013.01); C22F 1/10 (2013.01); F16L 9/02 (2013.01); F16L 13/02 (2013.01); F22B 37/10 (2013.01); B23K 2201/06 (2013.01); B23K 2201/10 (2013.01); B23K 2203/08 (2013.01); C21D 6/001 (2013.01); C21D 2251/04 (2013.01); Y10T 428/12931 (2015.01); Y10T 428/12944 (2015.01); Y10T 428/13 (2015.01);
Abstract

A high-temperature piping product is configured from a plurality of primary pipe members and a welding material. The primary pipe members are each made from an Ni-based forged alloy containing: Ni, Al, and at least one of Mo and W. The total content of the Mo and the W being 3-8 mass %. The Ni-based forged alloy exhibiting a γ'-phase dissolution temperature of from 920 to 970° C., and the γ′ phase being precipitated in 30 volume % or more in a temperature range of from 700 to 800° C. The welding material is made from an Ni-based cast alloy having a cast structure formed by welding. The Ni-based cast alloy containing: Ni, Al, and at least one of Mo and W, the total content of the Mo and the W being 9-15 mass %, the Ni-based cast alloy exhibiting a γ′-phase dissolution temperature of from 850 to 900° C.

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