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:
Dec. 17, 2013
Filed:
Aug. 23, 2011
Shigetoshi Hyodo, Osaka, JP;
Yoshikazu Takimoto, Osaka, JP;
Kazufumi Miyoshi, Osaka, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
A carburization sensing method according to the present invention includes: a first procedure of attaching a magnetic material to a reference material which has equivalent electromagnetic properties to those of a test material and is not carburized, a second procedure of measuring magnetic strength of each magnetic material and to acquire an electromagnetic test output value for each magnetic material, a third procedure of calculating a correlation between the measured magnetic strength value and the electromagnetic test output value, a fourth procedure of measuring magnetic strengths on a plurality of carburized materials, a fifth procedure of calculating a correlation between a carburized depth and the measured magnetic strength value, a sixth procedure of determining a threshold value Thof the measured magnetic strength value corresponding to a threshold value Thof the carburized depth to be sensed, a seventh procedure of determining a threshold value Thof an electromagnetic test output value corresponding to the threshold value Thof the measured magnetic strength value, and an eighth procedure to sense whether carburization occurs or not in a test material based on the magnitude correlation between the electromagnetic test output value of the test material and the threshold value Thof the electromagnetic test output value.