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:
Mar. 13, 1990
Filed:
Jul. 25, 1988
Applicant:
Inventors:
Assignee:
Mitsubishi Jukogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73787 ;
Abstract
A method of evaluating residual life of a heat-resistant steel member after and during service at high temperature and stress makes use of a residual life evaluation diagram which is obtained beforehand on a plurality of samples of the heat-resistant steel and which represents the relationship between the life consumption and a parameter which indicates the life consumed. The parameter may be data concerning the density of an alloy element such as molybdenum and chromium, or the state of degradation in the metallurgical structure and/or state of precipitation of carbides.