JPH01102765U - - Google Patents
Info
- Publication number
- JPH01102765U JPH01102765U JP19700687U JP19700687U JPH01102765U JP H01102765 U JPH01102765 U JP H01102765U JP 19700687 U JP19700687 U JP 19700687U JP 19700687 U JP19700687 U JP 19700687U JP H01102765 U JPH01102765 U JP H01102765U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- frequency
- pole core
- guide
- magnetic field
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims 1
- 230000005415 magnetization Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000011553 magnetic fluid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
第１図は本考案装置の一実施例を示す断面図、
第２図は他のラツパガイドを示す断面図、第３図
はラツパガイドの表面粗さとラツパガイド表面へ
の焼き付き発生率との関係を示す図、第４図は従
来の装置の概略を示す断面図、第５図は磁性流体
層５付近の詳細図である。
図中、１…被検材、２…励磁コイル、３…磁極
鉄心、３ａ，３ｂ…磁極端、４…送受信コイル、
５…磁性流体層、６…加圧ポンプ、７…レシーバ
タンク、８…配管、１０…磁性流体、１３…流体
回路、１４…ノズル穴、１７…鋼管、１８…ラツ
パガイド、２０…ノズル、２１…ガイド。
FIG. 1 is a sectional view showing an embodiment of the device of the present invention;
Fig. 2 is a sectional view showing another Luppa guide, Fig. 3 is a diagram showing the relationship between the surface roughness of the Luppa guide and the incidence of burn-in on the surface of the Luppa guide, Fig. 4 is a sectional view showing an outline of a conventional device, FIG. 5 is a detailed view of the vicinity of the magnetic fluid layer 5. In the figure, 1...Test material, 2...Exciting coil, 3...Magnetic pole iron core, 3a, 3b...Magnetic tips, 4...Transmitting/receiving coil,
5...Magnetic fluid layer, 6...Pressure pump, 7...Receiver tank, 8...Piping, 10...Magnetic fluid, 13...Fluid circuit, 14...Nozzle hole, 17...Steel pipe, 18...Ratsupa guide, 20...Nozzle, 21... guide.
Claims (1)
鉄心と、該磁極鉄心を直流磁化する励磁コイルと
、前記磁極鉄心の磁極端間にあつて高周波磁界を
発生すると共に該高周波磁界により誘導された高
周波電流と前記直流磁化とにより被検材に発生し
た超音波を検出する送受信コイルと前記磁極鉄心
内周の１対の磁極端両側にあり被検材を案内する
ラツパガイドとを備えた電磁超音波計測装置にお
いて、ラツパガイドの内表面粗さを０．５μ以下
としたことを特徴とする電磁超音波計測装置。 A hollow magnetic pole core having a pair of magnetic pole tips in the axial direction on the inner circumference, an excitation coil that magnetizes the magnetic pole core with direct current, and a high-frequency magnetic field between the magnetic pole tips of the magnetic pole core, and a high-frequency magnetic field generated by the high-frequency magnetic field. The method includes a transmitting/receiving coil that detects ultrasonic waves generated in the test material by the induced high-frequency current and the direct current magnetization, and lapper guides that are located on both sides of the pair of magnetic pole tips on the inner periphery of the magnetic pole core and guide the test material. An electromagnetic ultrasonic measuring device, characterized in that the roughness of the inner surface of the lapper guide is 0.5μ or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19700687U JPH01102765U (en) | 1987-12-24 | 1987-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19700687U JPH01102765U (en) | 1987-12-24 | 1987-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01102765U true JPH01102765U (en) | 1989-07-11 |
Family
ID=31487587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19700687U Pending JPH01102765U (en) | 1987-12-24 | 1987-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01102765U (en) |
-
1987
- 1987-12-24 JP JP19700687U patent/JPH01102765U/ja active Pending
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