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.:
Date of Patent:
May. 22, 2018
Filed:
Nov. 24, 2014
Japan Casting & Forging Corporation, Kitakyushu-shi, Fukuoka, JP;
Yoshihiro Okamura, Kitakyushu, JP;
Yasushi Wakeshima, Kitakyushu, JP;
JAPAN CASTING & FORGING CORPORATION, Fukuoka, JP;
Abstract
In a journal part of a 9 to 12 wt % Cr steel turbine rotor, a groove face is formed, and on the groove face, a lower build-up layer is formed by using a first welding material containing C: 0.10 to 0.25 wt %, Si: 0.20 to 0.80 wt %, Mn: 1.0 to 2.5 wt %, Ni: 0.4 to 1.0 wt %, Cr: 1.0 to 3.0 wt %, Mo: 0.2 to 1.5 wt %, V: 0.03 to 0.10 wt %, and a remainder composed of Fe and inevitable impurities, and further on this lower build-up layer, an upper build-up layer is formed using a second welding material containing C: 0.10 to 0.25 wt %, Si: 0.20 to 0.80 wt %, Mn: 1.0 to 2.5 wt %, Ni: 0.4 to 1.0 wt %, Cr: 1.0 to 3.0 wt %, Mo: 0.2 to 1.5 wt %, and a remainder consisting of Fe and inevitable impurities.