JP4749223B2 - 鋼管用磁粉探傷装置 - Google Patents
鋼管用磁粉探傷装置 Download PDFInfo
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- JP4749223B2 JP4749223B2 JP2006128951A JP2006128951A JP4749223B2 JP 4749223 B2 JP4749223 B2 JP 4749223B2 JP 2006128951 A JP2006128951 A JP 2006128951A JP 2006128951 A JP2006128951 A JP 2006128951A JP 4749223 B2 JP4749223 B2 JP 4749223B2
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- steel pipe
- magnetic
- magnetic flux
- magnetizing
- tube
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- 229910000831 Steel Inorganic materials 0.000 title claims description 57
- 239000010959 steel Substances 0.000 title claims description 57
- 239000006249 magnetic particle Substances 0.000 title claims description 17
- 230000004907 flux Effects 0.000 claims description 38
- 230000005284 excitation Effects 0.000 claims description 11
- 230000005415 magnetization Effects 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 28
- 238000001514 detection method Methods 0.000 description 15
- 239000006247 magnetic powder Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
δ:浸透深さ〔m〕、μ:透磁率、ρ:抵抗率〔Ωm〕、f:周波数〔Hz〕
Lx X軸方向の磁化コイル
Ly Y軸方向の磁化コイル
Lz Z軸方向の磁化コイル
Claims (2)
- 鋼管を囲んで互いに直交する3軸方向に磁束を発生する磁化コイルによる合成磁場により、鋼管を磁化するようになった鋼管用磁粉探傷装置において、
鋼管の外側の管径方向に沿った対向位置に配置されて管径方向に磁束を発生する第1の1対の磁化コイルと、その対向方向に直交して前記鋼管の外側の対向位置に配置されて前記管径方向に磁束を発生する第2の1対の磁化コイルと、前記鋼管を囲むように巻回され、かつ第1及び第2の前記磁化コイルを管軸方向に挟む対向位置に配置されることにより、前記管軸方向に磁束を発生する第3の1対の磁化コイルとを備え、
第1、第2及び第3の前記磁化コイルに、50Hzよりも低く、かつ互いに非整数倍の関係を有する周波数の磁化電流を供給する励磁回路がそれぞれ付属していることを特徴とする鋼管用磁粉探傷装置。 - 互いに非整数倍の関係を有する周波数がいずれも10Hzより低いことを特徴とする請求項1記載の鋼管用磁粉探傷装置。
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JP2006128951A JP4749223B2 (ja) | 2006-05-08 | 2006-05-08 | 鋼管用磁粉探傷装置 |
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JP2006128951A JP4749223B2 (ja) | 2006-05-08 | 2006-05-08 | 鋼管用磁粉探傷装置 |
Publications (2)
Publication Number | Publication Date |
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JP2007298482A JP2007298482A (ja) | 2007-11-15 |
JP4749223B2 true JP4749223B2 (ja) | 2011-08-17 |
Family
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JP2006128951A Active JP4749223B2 (ja) | 2006-05-08 | 2006-05-08 | 鋼管用磁粉探傷装置 |
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JP (1) | JP4749223B2 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8257895B2 (en) * | 2009-10-09 | 2012-09-04 | Xerox Corporation | Toner compositions and processes |
CZ305330B6 (cs) * | 2010-11-19 | 2015-08-05 | tarman Stanislav Ĺ | Zkušební zařízení pro zjišťování vad rotačních kovových těles magnetickou práškovou metodou |
JP5403828B2 (ja) * | 2011-03-22 | 2014-01-29 | 電子磁気工業株式会社 | 被検査体の磁化装置、磁粉探傷装置 |
CN102353714B (zh) * | 2011-07-06 | 2014-03-12 | 射阳县智能探伤设备有限公司 | 管端感应磁粉探伤机 |
JP2014020984A (ja) * | 2012-07-20 | 2014-02-03 | Nippon Denji Sokki Kk | 磁粉探傷試験用磁化装置 |
JP5465803B2 (ja) * | 2013-06-18 | 2014-04-09 | 電子磁気工業株式会社 | 被検査体の磁化装置の調整方法 |
EP2955514B1 (de) * | 2014-06-12 | 2019-01-09 | Helling GmbH | Vorrichtung und Verfahren zur zerstörungsfreien Prüfung metallischer Werkstücke |
CN116794157B (zh) * | 2023-06-21 | 2024-03-19 | 上海射磁探伤机制造有限公司 | 管端探伤机和管端探伤机的探伤方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5177379A (ja) * | 1974-12-27 | 1976-07-05 | Tokushu Toryo Kk | Jikitanshosochi |
JPS5269381A (en) * | 1975-12-05 | 1977-06-09 | Sumitomo Metal Ind | Method of magnetically detecting flaw |
JPS56117178A (en) * | 1980-02-20 | 1981-09-14 | Shimadzu Corp | Metal detector |
JPS63177053A (ja) * | 1987-01-19 | 1988-07-21 | Nippon Steel Corp | 鋼材の表面疵探傷方法および装置 |
JPH0720593Y2 (ja) * | 1988-10-03 | 1995-05-15 | 日本鋼管株式会社 | 鋼管端部磁化装置 |
JPH03223668A (ja) * | 1990-01-30 | 1991-10-02 | Nkk Corp | 磁粉探傷装置 |
JPH0424062U (ja) * | 1990-06-21 | 1992-02-27 | ||
JP2579324Y2 (ja) * | 1992-10-19 | 1998-08-27 | 日本鋼管株式会社 | 磁粉探傷装置 |
JPH06249835A (ja) * | 1993-02-23 | 1994-09-09 | Kawasaki Steel Corp | 鋼管用磁粉探傷装置 |
JP3292896B2 (ja) * | 1993-09-30 | 2002-06-17 | 日本電磁測器株式会社 | 探傷用磁化装置 |
JPH07151732A (ja) * | 1993-12-01 | 1995-06-16 | Nkk Corp | 鋼管端部磁化装置 |
JP3053521B2 (ja) * | 1994-03-14 | 2000-06-19 | 日本鋼管株式会社 | 磁粉探傷装置 |
JP4046392B2 (ja) * | 1997-12-02 | 2008-02-13 | 日本電磁測器株式会社 | 磁粉探傷用磁化装置 |
JP2004037438A (ja) * | 2002-07-05 | 2004-02-05 | Nippon Jiki Kogyo Kk | 組み合わせコイルを用いた3軸式パルス電流磁化磁粉探傷方法 |
JP4193181B2 (ja) * | 2004-04-30 | 2008-12-10 | 住友金属工業株式会社 | 鋼管の磁気探傷用磁化装置 |
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