logo

For the Inventor, By the Inventor

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 10378366 B1

PDFFull Text
Date of Patent:
Aug. 13, 2019

Filed:

Apr. 11, 2016

Steam turbine rotor blade and method for manufacturing steam turbine rotor blade

Applicant:

Mitsubishi Hitachi Power Systems, Ltd., Yokohama, JP;

Inventors:

Shinji Oikawa, Yokohama, JP;

Masahiko Arai, Yokohama, JP;

Hiroyuki Doi, Yokohama, JP;

Hideo Yoda, Yokohama, JP;

Assignee:

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

Attorney:

Volpe and Koenig, P.C.

Primary Examiner:

Long T Tran

Int. Cl.
CPC ...
F01D 5/28 (2006.01); F01D 25/00 (2006.01); B23K 10/02 (2006.01); B23K 15/00 (2006.01); B23K 31/00 (2006.01); C22C 14/00 (2006.01); C22F 1/02 (2006.01); C22F 1/18 (2006.01); B23K 26/342 (2014.01); B23K 26/21 (2014.01); B23K 31/02 (2006.01); B23K 35/32 (2006.01); F01D 5/14 (2006.01); C22C 1/02 (2006.01); B23K 101/00 (2006.01); B23K 103/14 (2006.01); C22F 1/00 (2006.01);
U.S. Cl.
CPC ...
F01D 5/286 (2013.01); B23K 10/02 (2013.01); B23K 10/027 (2013.01); B23K 15/00 (2013.01); B23K 15/0093 (2013.01); B23K 26/21 (2015.10); B23K 26/342 (2015.10); B23K 31/00 (2013.01); B23K 31/02 (2013.01); B23K 35/325 (2013.01); B23K 35/327 (2013.01); C22C 1/02 (2013.01); C22C 14/00 (2013.01); C22F 1/02 (2013.01); C22F 1/18 (2013.01); C22F 1/183 (2013.01); F01D 5/147 (2013.01); F01D 5/28 (2013.01); F01D 25/00 (2013.01); B23K 2101/001 (2018.08); B23K 2103/14 (2018.08); C22F 1/00 (2013.01); F05D 2220/31 (2013.01); F05D 2230/31 (2013.01); F05D 2240/307 (2013.01); F05D 2300/174 (2013.01); F05D 2300/2262 (2013.01);
Abstract

A steam turbine rotor blade achieving both abrasion resistance and reliability, and a method for manufacturing a steam turbine rotor blade capable of obtaining such a steam turbine rotor blade are provided. A steam turbine rotor blade according to the invention is characterized by including a blade base material and an erosion shield formed on a surface of the blade base material, wherein the blade base material is composed of a titanium alloy, and the erosion shield is composed of a weld overlay layer including a parent phase composed of pure titanium in which a metal element is solid-dissolved or a titanium alloy in which a metal element is solid-dissolved, and a hard phase dispersed in the parent phase.

Find Patent Forward Citations

Loading…