Eddy current flaw detection system and eddy current flaw detection method
US-9222915-B2 · Dec 29, 2015 · US
Carburization sensing method
US9304110B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9304110-B2 |
| Application number | US-201214349722-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 8, 2012 |
| Priority date | Oct 25, 2011 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
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The present invention provides a method for sensing whether carburization occurs or not on an inner surface of a pipe or tube by an electromagnetic testing, comprising: a first step of inserting a carburized tube P 0 into an excitation coil 11 and into a detection coil 12 , and determining a value of a parameter K; and a second step of setting conditions of the excitation coil so as to obtain the value of the parameter K determined in the first step, and thereafter, inserting a pipe or tube that is an inspection target into the excitation coil 11 and into the detection coil 12 and sensing whether carburization occurs or not on an inner surface of the pipe or tube based on an output signal outputted from the detection coil 12.
First claim
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The invention claimed is: 1. A method for sensing whether carburization occurs or not on an inner surface of a pipe or tube by an electromagnetic testing, comprising: a first step of inserting a carburized pipe or tube in which occurrence of carburization on an inner surface thereof is known into an excitation coil and into a detection coil, and determining a value of a parameter K represented by the following Equation (1): K =( I·N/L )· F −3/2 (1) so as to s…
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- What does patent US9304110B2 cover?
- The present invention provides a method for sensing whether carburization occurs or not on an inner surface of a pipe or tube by an electromagnetic testing, comprising: a first step of inserting a carburized tube P 0 into an excitation coil 11 and into a detection coil 12 , and determining a value of a parameter K; and a second step of setting conditions of the excitation coil so as to obta…
- Who is the assignee on this patent?
- Hyodo Shigetoshi, Takimoto yoshikazu, Nippon Steel & Sumitomo Metal Corp
- What technology area does this patent fall under?
- Primary CPC classification G01N27/82. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 05 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).