CN108872370A - A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity - Google Patents
A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity Download PDFInfo
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- CN108872370A CN108872370A CN201810836045.0A CN201810836045A CN108872370A CN 108872370 A CN108872370 A CN 108872370A CN 201810836045 A CN201810836045 A CN 201810836045A CN 108872370 A CN108872370 A CN 108872370A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
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Abstract
The invention discloses a kind of householder methods for assessing orthogonal eddy current sensor detection weld seam validity, using the method for orthogonal eddy current sensor and the integrated detection of absolute type eddy current probe, differential type eddy current probe, monitoring and evaluation face of weld degree of roughness and overcoat thickness, when face of weld degree of roughness and overcoat thickness index are more than detection specified value, then the detection invalidating signal of orthogonal eddy current sensor is determined.
Description
Technical field
The present invention relates to a kind of lossless detection methods, have more particularly to a kind of orthogonal eddy current sensor detection weld seam of assessment
The householder method of effect property.
Background technique
Metal weldment is widely present in each industry and civilian installation field.From a safety viewpoint, welding quality inspection is outstanding
It is method that is important, being currently used primarily in metal component weld seam detection, there is ray, magnetic powder, ultrasound, vortex etc..Ray method due to
Field conduct is not easy, therefore the less use in Larger Engineering Projects, and magnetic powder, osmosis, ultrasonic method are because to face of weld requirement
Height is especially also not easy the weld seam examinations with protective layer, needs polishing welding seams.A few years ago, since orthogonal vortex passes
The appearance of sensor so that being not required to removal protective layer, and allows face of weld to have the existing detection of certain roughness to be possibly realized.But
Any method has limitation, also such to orthogonal eddy current sensor.Such as surface is too of poor quality, protective layer is too thick（As 2mm with
On）And it is very uneven, it can all make the signal disorder of orthogonal eddy current sensor, it is difficult to which correct distinguish is crackle or interference.
Summary of the invention
It is an object of the invention to overcome the deficiency of the prior art, provides a kind of assessment orthogonal eddy current sensor detection weld seam
The householder method of validity, using orthogonal eddy current sensor and absolute type eddy current probe, differential type eddy current probe collection
At the method for detection, monitoring and evaluation face of weld degree of roughness and overcoat thickness.
The technical solution adopted by the present invention to solve the technical problems is：It is a kind of to assess orthogonal eddy current sensor detection weld seam
The householder method of validity, it is characterised in that：By orthogonal eddy current sensor and an absolute type eddy current probe and a difference
Fraction eddy current probe, which integrates, to be detected；The integrated approach is, by orthogonal eddy current sensor and absolute type whirlpool
Stream detection probe, differential type eddy current probe are along being fixed together before and after scanning direction, or by orthogonal eddy current sensor
Insertion is fixed in absolute type eddy current probe at center, with differential type eddy current probe along scanning direction before and after it is solid
It is scheduled on together；Using absolute type eddy current probe monitoring and evaluation face of weld overcoat thickness, when face of weld protects thickness
Spending index is more than detection specified value, then determines the detection invalidating signal of orthogonal eddy current sensor；It is visited using differential type EDDY CURRENT
Head monitoring and evaluation face of weld degree of roughness, when face of weld degree of roughness index be more than detection specified value, then determine orthogonal whirlpool
The detection invalidating signal of flow sensor.
Further, orthogonal eddy current sensor is integrated with a differential type eddy current probe and is detected；
The differential vortex detection probe includes two test coil of eddy current；The integrated approach is to be embedded in orthogonal eddy current sensor
It is fixed in a test coil of eddy current in differential type eddy current probe；Eddy current testing instrument uses timesharing alternative excitation side
Method includes the following steps,
A. a test coil of eddy current in differential type eddy current probe is first motivated, and receives test coil of eddy current acquisition
Absolute eddy current testing signal realizes absolute type EDDY CURRENT, monitoring and evaluation face of weld overcoat thickness；
B. two test coil of eddy current in differential type eddy current probe are then motivated simultaneously, and receive two EDDY CURRENT lines
The eddy current testing signal of circle acquisition carries out difference processing, realizes differential type EDDY CURRENT, monitoring and evaluation face of weld degree of roughness；
C. orthogonal eddy current sensor is finally motivated, realizes non-directional EDDY CURRENT；
D. circulating repetition step a, step b, step c.
The invention has the advantages that a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity, is adopted
With the method for orthogonal eddy current sensor and the integrated detection of absolute type eddy current probe, differential type eddy current probe, monitoring is commented
Face of weld degree of roughness and overcoat thickness are estimated, when face of weld degree of roughness and overcoat thickness index are more than detection regulation
Value, then determine the detection invalidating signal of orthogonal eddy current sensor.
Invention is further described in detail with reference to embodiments, but the orthogonal currents sensing of a kind of assessment of the invention
The householder method of device detection weld seam validity is not limited to the embodiment.
Detailed description of the invention
The present invention is further described for middle embodiment with reference to the accompanying drawing.
Fig. 1 is the detection method schematic diagram of the embodiment of the present invention one.
Fig. 2 is the detection method schematic diagram of the embodiment of the present invention two.
Fig. 3 is the detection method schematic diagram of the embodiment of the present invention three.
In figure, 1. orthogonal eddy current sensors, 2. absolute type eddy current probes, 3. differential type eddy current probes, 4. welderings
Seam.
Specific embodiment
Embodiment one, as shown in Figure 1, a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity,
It is characterized in that：By orthogonal eddy current sensor 1 and an absolute type eddy current probe 2 and a differential type eddy current probe 3
It integrates and is detected；The integrated approach is, by orthogonal eddy current sensor 1 and absolute type eddy current probe 2, difference
Formula eddy current probe 3 is fixed together along scanning direction front and back；Using 2 monitoring and evaluation weld seam of absolute type eddy current probe
4 surface protecting layer thickness, when 4 surface protecting layer thickness indication of weld seam be more than detection specified value, then determine orthogonal eddy current sensor 1
Detection invalidating signal；Using 3 monitoring and evaluation weld seam of differential type eddy current probe, 4 surface roughness, when 4 surface of weld seam is thick
Rough level index is more than detection specified value, then determines the detection invalidating signal of orthogonal eddy current sensor 1.
Embodiment two, as shown in Fig. 2, a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity,
It is characterized in that：By orthogonal eddy current sensor 1 and an absolute type eddy current probe 2 and a differential type eddy current probe 3
It integrates and is detected；The integrated approach is that the insertion of orthogonal eddy current sensor 1 is fixed on absolute type EDDY CURRENT and is visited
In first 2 at center, it is being fixed together before and after scanning direction with differential type eddy current probe 3；It is vortexed using absolute type
2 monitoring and evaluation weld seam of detection probe, 4 surface protecting layer thickness, when 4 surface protecting layer thickness indication of weld seam be more than detection specified value,
Then determine the detection invalidating signal of orthogonal eddy current sensor 1；Using 3 monitoring and evaluation weld seam of differential type eddy current probe, 4 surface
Degree of roughness, when 4 surface roughness index of weld seam be more than detection specified value, then determine orthogonal eddy current sensor 1 detection letter
It is number invalid.
Embodiment three, as shown in figure 3, further, by orthogonal eddy current sensor 1 and a differential type eddy current probe
3 integrate and are detected；The differential vortex detection probe includes two test coil of eddy current；The integrated approach is,
In the test coil of eddy current that the insertion of orthogonal eddy current sensor 1 is fixed in differential type eddy current probe 3；EDDY CURRENT
Instrument uses timesharing alternative excitation method, includes the following steps,
A. a test coil of eddy current in differential type eddy current probe 3 is first motivated, and receives test coil of eddy current acquisition
Absolute eddy current testing signal, realize absolute type EDDY CURRENT, 4 surface protecting layer thickness of monitoring and evaluation weld seam；
B. two test coil of eddy current in differential type eddy current probe 3 are then motivated simultaneously, and receive two EDDY CURRENTs
The eddy current testing signal of coil acquisition carries out difference processing, realizes differential type EDDY CURRENT, 4 rough surface journey of monitoring and evaluation weld seam
Degree；
C. orthogonal eddy current sensor 1 is finally motivated, realizes non-directional EDDY CURRENT；
D. circulating repetition step a, step b, step c.
Above-described embodiment is only used to further illustrate that a kind of orthogonal eddy current sensor detection weld seam of assessment of the invention is effective
The householder method of property, but the invention is not limited to embodiments, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent change and modification of work, fall within the scope of protection of technical solution of the present invention.
Claims (2)
1. a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity, it is characterised in that：Orthogonal vortex is passed
Sensor is integrated and is detected with an absolute type eddy current probe and a differential type eddy current probe；The collection
It is at method, by orthogonal eddy current sensor and absolute type eddy current probe, differential type eddy current probe along scanning direction
Front and back is fixed together, or by orthogonal eddy current sensor insertion be fixed in absolute type eddy current probe at center, with
Differential type eddy current probe is fixed together along scanning direction front and back；It is welded using absolute type eddy current probe monitoring and evaluation
Seam surface overcoat thickness, when face of weld overcoat thickness index be more than detection specified value, then determine orthogonal eddy current sensor
Detection invalidating signal；Using differential type eddy current probe monitoring and evaluation face of weld degree of roughness, when face of weld is coarse
Level index is more than detection specified value, then determines the detection invalidating signal of orthogonal eddy current sensor.
2. a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity according to claim 1, special
Sign is：Further, orthogonal eddy current sensor is integrated with a differential type eddy current probe and is detected；Institute
Stating differential vortex detection probe includes two test coil of eddy current；The integrated approach is to be embedded in orthogonal eddy current sensor solid
It is scheduled in a test coil of eddy current in differential type eddy current probe；
Eddy current testing instrument uses timesharing alternative excitation method, includes the following steps,
A. a test coil of eddy current in differential type eddy current probe is first motivated, and receives test coil of eddy current acquisition
Absolute eddy current testing signal realizes absolute type EDDY CURRENT, monitoring and evaluation face of weld overcoat thickness；
B. two test coil of eddy current in differential type eddy current probe are then motivated simultaneously, and receive two EDDY CURRENT lines
The eddy current testing signal of circle acquisition carries out difference processing, realizes differential type EDDY CURRENT, monitoring and evaluation face of weld degree of roughness；
C. orthogonal eddy current sensor is finally motivated, realizes non-directional EDDY CURRENT；
D. circulating repetition step a, step b, step c.
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| CN201810836045.0A CN108872370B (en) | 2018-07-26 | 2018-07-26 | Auxiliary method for evaluating effectiveness of orthogonal eddy current sensor for detecting weld joint |
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Cited By (1)
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| CN111043947A (en) * | 2019-12-30 | 2020-04-21 | 爱德森（厦门）电子有限公司 | Nuclear fuel assembly oxide film thickness eddy current testing device |
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