CN201527259U - Surface-contact eddy current thickness measurement probe - Google Patents
Surface-contact eddy current thickness measurement probe Download PDFInfo
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- CN201527259U CN201527259U CN2009201638847U CN200920163884U CN201527259U CN 201527259 U CN201527259 U CN 201527259U CN 2009201638847 U CN2009201638847 U CN 2009201638847U CN 200920163884 U CN200920163884 U CN 200920163884U CN 201527259 U CN201527259 U CN 201527259U
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- eddy current
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Abstract
The utility model relates to a surface-contact eddy current thickness measurement probe, which comprises a probe contact end face, a measuring coil, a probe casing, a binding post of the measuring coil, and an opening position of a rear end cover of the probe casing. The probe casing is a round pipe with the rear end cover, the opening position is arranged at the rear end cover of the round pipe, and the binding post of the measuring coil penetrates out of the opening position of the rear end cover of the round pipe. The probe contact end face is connected with the probe casing, and the measuring coil is fixed on the probe contact end face. The surface-contact eddy current thickness measurement probe is capable of measuring coating thickness on the surface of a thin metal work-piece, and the measured thin metal work-piece does not deform due to single-point stress. By adopting the surface-contact probe, stability and fine repetitiveness of instruments can be greatly improved.
Description
Affiliated technical field
The utility model relates to a kind of face contact type eddy current Thicknesser probe, is used in particular for the coating thickness measurement on the thin metallic conductor.
Background technology
Present eddy current coating thickness detector can be measured the coating thickness on the metallic conductor.For example, coating thickness detector can accurately be measured the skin of paint on the metallic conductor, pottery, enamel protective layer, plastics, rubber covering layer, and the various corrosion-inhibiting coatings of chemical petroleum industry.Use the industry of eddy current coating thickness detector very extensive, for example industrial paints industry, automotive lacquer industry, Treatment of Metal Surface industry etc.Wherein the industrial paints industry comprises that bridge is rinsed lacquer, boats and ships are rinsed the lacquer on lacquer, aerospace craft surface, household electrical appliances, aluminum alloy doors and windows and other aluminum products surface etc.The automotive lacquer industry comprises the detection of spraying paint of new car, the quality testing of used car etc.Present most of eddy current coating thickness detector measurement range from 0 micron to 1500 microns about, the different brands product is measured the upper limit more or less because stress the application industry difference, and is little to using influence.Measuring accuracy generally is 0.1 micron.But the coating that the eddy current probe of existing coating thickness measurement is mainly used on the thick metallic conductor is measured, and is not suitable for the coating thickness of measuring above the thin workpiece.And the eddy current probe that existing coating thickness measurement adopted, single-point contact eddy current probe normally, this single-point type eddy current probe single-point contact workpiece surface, bigger to the pressure of surface of the work contact point, cause the thin metal parts distortion easily, thereby influence measurement result.
The utility model content
The purpose of this utility model is to improve above-mentioned deficiency of the prior art and a kind of novel eddy current Thicknesser probe is provided.
The purpose of this utility model reaches by following measure:
The eddy current Thicknesser probe comprises a probe contact end face, measures coil, probing shell, the terminal stud of measurement coil, the opening part of probing shell rear end cap; Described probing shell is the pipe of a band rear end cap, and an opening part is stamped in the rear end of described pipe, and the terminal stud of described measurement coil passes from the rear end cap opening part of described pipe; Described probe contact end face is connected with described probing shell, and described measurement coil is fixed on the described probe contact end face; Described measurement coil is an air core coil.
The method of eddy current measurement coating thickness is a kind of electromagnetic nondestructive method, and it adopts the high frequency ac signal excitation to measure coil, at first generates an electromagnetic field around measuring coil, when measuring coil near conductor, just forms eddy current therein.It is nearer from conducting metal to measure coil, and then eddy current is bigger, and reflected impedance is also bigger.This feedback signal has characterized the size of measuring distance between coil and the conducting metal, the i.e. size of non-conductive coating layer thickness on the conducting metal.Be provided with circuit such as frequency stabilization, phase-locked, temperature compensation in the equipment circuit, also added microcontroller in the circuit simultaneously, measuring accuracy and reappearance have been had increase substantially.Generally speaking, the accessible resolution of eddy current thickness meter is 0.1 micron, permissible error 1%, the level that range is 10 millimeters.
Advantage of the present utility model is:
The utility model can be measured the coating thickness on the thin metal parts face, and measured workpiece can not deform because single-point is stressed.The utility model has adopted the probe of face contact to increase the stability and the good reproducibility of instrument greatly simultaneously.
Description of drawings
Fig. 1: the cross-sectional view of the utility model face contact type eddy current Thicknesser probe.
Embodiment
Be illustrated in figure 1 as the structural representation of the utility model face contact type eddy current Thicknesser probe.Novel eddy current Thicknesser probe comprises a probe contact end face 1, measures coil 2, probing shell 3, the terminal stud 4 of measurement coil, the opening part 5 of probing shell rear end cap.Described probing shell 3 is pipes of a band rear end cap, and an opening part 5 is stamped in the rear end of described pipe, and the terminal stud 4 of described measurement coil passes from the rear end cap opening part 5 of described pipe; Described probe contact end face 1 is connected with described probing shell 3, and described measurement coil 2 is fixed on the described probe contact end face 1; Described measurement coil 2 is air core coils.
Measure coil 2 and be installed in the probing shell 3, and the terminal stud 4 of measuring coil stretches out from the opening part 5 of probing shell rear end cap.
When measuring coating thickness, probe contact end face 1 is placed on the detected element, measures coil and transmits and receives electromagnetic wave, produces measuring-signal, measuring-signal is input to a microcontroller after through circuit such as amplification, frequency stabilization, phase-locked, temperature compensations and carries out analyzing and processing, thereby draws the thickness of coating.
Adopt eddy current coating thickness instrument of the present utility model, can measure the electrical insulator coating on all electric conductors in principle, as lacquer, plastic coating and the anode oxide film on aerospace craft surface, vehicle, household electrical appliances, aluminum alloy doors and windows and other aluminum products surface.
Claims (1)
1. the eddy current Thicknesser probe is characterized in that: comprise a probe contact end face (1), measure coil (2), probing shell (3), the terminal stud (4) of measurement coil, the opening part of probing shell rear end cap (5); Described probing shell (3) is the pipe of a band rear end cap, and an opening part (5) is stamped in the rear end of described pipe, and the terminal stud of described measurement coil (4) passes from the rear end cap opening part (5) of described pipe; Described probe contact end face (1) is connected with described probing shell (3), and described measurement coil (2) is fixed on the described probe contact end face (1); Described measurement coil (2) is an air core coil.Measuring coil (2) is installed in the probing shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201638847U CN201527259U (en) | 2009-07-06 | 2009-07-06 | Surface-contact eddy current thickness measurement probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201638847U CN201527259U (en) | 2009-07-06 | 2009-07-06 | Surface-contact eddy current thickness measurement probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201527259U true CN201527259U (en) | 2010-07-14 |
Family
ID=42518545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201638847U Expired - Fee Related CN201527259U (en) | 2009-07-06 | 2009-07-06 | Surface-contact eddy current thickness measurement probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201527259U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567647A (en) * | 2013-10-23 | 2015-04-29 | 上海航天设备制造总厂 | Method for measuring thickness of foam plastic board with eddy current method |
| CN105115411A (en) * | 2015-09-09 | 2015-12-02 | 海安迪斯凯瑞探测仪器有限公司 | Coating thickness gauge probe |
| CN108507504A (en) * | 2018-04-13 | 2018-09-07 | 徐州工程学院 | The device and its application method of friction welding (FW) weldment excircle dimension are measured for ultrasonic method |
-
2009
- 2009-07-06 CN CN2009201638847U patent/CN201527259U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567647A (en) * | 2013-10-23 | 2015-04-29 | 上海航天设备制造总厂 | Method for measuring thickness of foam plastic board with eddy current method |
| CN105115411A (en) * | 2015-09-09 | 2015-12-02 | 海安迪斯凯瑞探测仪器有限公司 | Coating thickness gauge probe |
| CN105115411B (en) * | 2015-09-09 | 2018-03-02 | 海安迪斯凯瑞探测仪器有限公司 | A kind of coating thickness detector probe |
| CN108507504A (en) * | 2018-04-13 | 2018-09-07 | 徐州工程学院 | The device and its application method of friction welding (FW) weldment excircle dimension are measured for ultrasonic method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20110706 |