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:
Jan. 21, 2014
Filed:
Jun. 23, 2010
Kunio Asai, Hitachi, JP;
Takeshi Kudo, Hitachinaka, JP;
Hideo Yoda, Hitachi, JP;
Katsumi Tanaka, Hitachi, JP;
Kunio Asai, Hitachi, JP;
Takeshi Kudo, Hitachinaka, JP;
Hideo Yoda, Hitachi, JP;
Katsumi Tanaka, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A turbine rotor blade which is enhanced in erosion resistance and reduced in stress corrosion cracking sensitivity is provided. When a blade tip end of the turbine rotor blade is hardened by heat treatment, hardness at an outer circumferential side in a radial direction is made higher than hardness at an inner circumferential side, and thereby, enhancement in erosion resistance and reduction in stress corrosion cracking sensitivity are made compatible with each other all over in a blade length direction.