JPH02135856U - - Google Patents
Info
- Publication number
- JPH02135856U JPH02135856U JP4367089U JP4367089U JPH02135856U JP H02135856 U JPH02135856 U JP H02135856U JP 4367089 U JP4367089 U JP 4367089U JP 4367089 U JP4367089 U JP 4367089U JP H02135856 U JPH02135856 U JP H02135856U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- inspected
- detection
- bent
- flaw detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
第１図は本考案による検出コイルの展開面であ
り、第２図は鋼管の探傷に本考案を適用した例を
示す断面図である。第３図は本考案による検出コ
イルの周方向検出特性を示すグラフであり、第４
図は本考案による６個の検出コイルを周方向に連
続配置した場合の周方向検出特性を示すグラフで
ある。第５図は検出コイル軸を探傷面に平行にす
る従来の検出コイルの断面図であり、第６図は検
出コイル軸を探傷面に垂直にする従来の検出コイ
ルの部分断面図である。
１：被検査材、２：検出コイル、３：励磁コイ
ル。
FIG. 1 is a developed view of a detection coil according to the present invention, and FIG. 2 is a sectional view showing an example in which the present invention is applied to flaw detection of steel pipes. FIG. 3 is a graph showing the circumferential direction detection characteristics of the detection coil according to the present invention.
The figure is a graph showing circumferential detection characteristics when six detection coils according to the present invention are arranged in succession in the circumferential direction. FIG. 5 is a sectional view of a conventional detection coil in which the detection coil axis is parallel to the flaw detection surface, and FIG. 6 is a partial sectional view of a conventional detection coil in which the detection coil axis is perpendicular to the flaw detection surface. 1: Material to be inspected, 2: Detection coil, 3: Excitation coil.
Claims (1)
探傷に用いられる検出コイルにおいて、線路を矩
形状に折り曲げつつフラツトに捲回し、該矩形の
向い合う辺に相当する部位をそれぞれ被検査材に
対向する面とは反対側に折り曲げたコイルを複数
個用意し、各コイルの折曲を行なつていない部位
の線路を被検査材の周方向に倣わせ、各コイルの
折曲を行なつた部位を互いに隣り合せて被検査材
の探傷面に添つて連続配置したことを特徴とする
渦流探傷用検出コイル。 In a detection coil used for mutual induction eddy current flaw detection using a through-type excitation coil, the line is bent into a rectangular shape and wound flat, and the parts corresponding to the opposite sides of the rectangle are placed opposite the material to be inspected. Prepare multiple coils bent on the opposite side of the surface, trace the line of the unbent part of each coil in the circumferential direction of the material to be inspected, and trace the bent part of each coil. 1. Detection coils for eddy current flaw detection, characterized in that they are successively arranged adjacent to each other along the flaw detection surface of a material to be inspected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4367089U JPH0639331Y2 (en) | 1989-04-14 | 1989-04-14 | Eddy current flaw detection coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4367089U JPH0639331Y2 (en) | 1989-04-14 | 1989-04-14 | Eddy current flaw detection coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02135856U true JPH02135856U (en) | 1990-11-13 |
| JPH0639331Y2 JPH0639331Y2 (en) | 1994-10-12 |
Family
ID=31556282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4367089U Expired - Lifetime JPH0639331Y2 (en) | 1989-04-14 | 1989-04-14 | Eddy current flaw detection coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639331Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0637762U (en) * | 1992-10-28 | 1994-05-20 | 原電子測器株式会社 | Eddy current flaw detection coil device |
| JP2019082369A (en) * | 2017-10-30 | 2019-05-30 | 矢崎エナジーシステム株式会社 | Corrosion diagnostic method and corrosion diagnostic device |
-
1989
- 1989-04-14 JP JP4367089U patent/JPH0639331Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0637762U (en) * | 1992-10-28 | 1994-05-20 | 原電子測器株式会社 | Eddy current flaw detection coil device |
| JP2019082369A (en) * | 2017-10-30 | 2019-05-30 | 矢崎エナジーシステム株式会社 | Corrosion diagnostic method and corrosion diagnostic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0639331Y2 (en) | 1994-10-12 |
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