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:
Jul. 05, 2011
Filed:
Apr. 18, 2006
Kaiko Sato, Hyogo, JP;
Misaki Nagao, Hyogo, JP;
Kazuhiko Hiraoka, Hyogo, JP;
Ichiro Takasu, Hyogo, JP;
Yasukasu Unigame, Hyogo, JP;
Kaiko Sato, Hyogo, JP;
Misaki Nagao, Hyogo, JP;
Kazuhiko Hiraoka, Hyogo, JP;
Ichiro Takasu, Hyogo, JP;
Yasukasu Unigame, Hyogo, JP;
Sanyo Special Steel Co., Ltd., Hyogo, JP;
Abstract
A method for evaluating the reliability of steel in terms of inclusions is characterized in that the inclusions of approximately 100 μm or less in maximum inclusion size are evaluated by microscopy combined with the extreme-value statistical analysis; the inclusions of approximately 100 μm or greater in maximum inclusion size are evaluated by the ultrasonic flaw detection testing performed at a frequency of 5 to 25 MHz; and the reliability of the steel is evaluated based on the results of the extreme-value statistical analysis applied to the results of the microscopy and the results of the ultrasonic flaw detection testing combined.
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