CN106226398B - A kind of lossless detection method of PDC composite sheet faying face quality - Google Patents
A kind of lossless detection method of PDC composite sheet faying face quality Download PDFInfo
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- CN106226398B CN106226398B CN201610604494.3A CN201610604494A CN106226398B CN 106226398 B CN106226398 B CN 106226398B CN 201610604494 A CN201610604494 A CN 201610604494A CN 106226398 B CN106226398 B CN 106226398B
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- composite sheet
- pdc composite
- faying face
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- detection method
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0231—Composite or layered materials
Abstract
The invention discloses a kind of lossless detection methods of PDC composite sheet faying face quality.The detection method is detected using ultrasonic scanning microscope, comprising the following steps: 1) upward by the diamond layer of PDC composite sheet, level is dipped in water；2) A- scanning is carried out to PDC composite sheet, adjusts the position of energy converter, PDC composite sheet is made to be located at the focus of energy converter；The faying face region of PDC composite sheet is determined according to the reflection configuration that A- is scanned；3) C- scanning is carried out to the faying face region of PDC composite sheet and the faying face quality of PDC composite sheet is judged according to gained ultrasonic scanning image.It is different from traditional destructive detection method, which will not damage product, and can differentiate the defect type of faying face, positions and dimensions；Have the characteristics that scanning speed is fast, high-efficient, the mass scanning and detection of product may be implemented, effectively increase the reliability of product.
Description
Technical field
The invention belongs to the non-destructive testing of ultrasonic wave and assessment technique fields, and in particular to a kind of PDC composite sheet faying face
The lossless detection method of quality.
Background technique
PDC composite sheet is that stratiform made of polycrystalline diamond layer and hard alloy substrate are sintered under high-temperature and high-pressure conditions is multiple
It is fit.PDC composite sheet have good intensity, wearability and shock resistance, be widely used in machine tools, petroleum and
The fields such as geological drill bit, truer.
The faying face quality of polycrystalline diamond layer and hard alloy substrate directly affects the bond strength of PDC composite sheet,
Any defects such as layering, crackle, hole on faying face can all cause diamond layer to crack or fall off, and it is multiple to have seriously affected PDC
Close the service performance and service life of piece.Currently, mainly taking ball falling impact method to the quality testing of PDC composite sheet bond strength
Deng destructive detection method, it is difficult to the time of day in reaction bonded face, the mass that also cannot achieve product is examined.
Summary of the invention
The object of the present invention is to provide a kind of lossless detection methods of PDC composite sheet faying face quality, to solve existing
Detection method, can not reaction bonded face time of day, cannot achieve mass inspection purpose.
In order to achieve the goal above, the technical scheme adopted by the invention is that:
A kind of lossless detection method of PDC composite sheet faying face quality, is detected using ultrasonic scanning microscope, packet
Include following steps:
1) upward by the diamond layer of PDC composite sheet, level is dipped in water；
2) A- scanning is carried out to PDC composite sheet, adjusts the position of energy converter, PDC composite sheet is made to be located at the focus of energy converter；
The faying face region of PDC composite sheet is determined according to the reflection configuration that A- is scanned；
3) C- scanning is carried out to the faying face region of PDC composite sheet, according to gained ultrasonic scanning image, judges that PDC is multiple
Close the faying face quality of piece.
Ultrasonic wave surface sweeping microscope is made of the component including energy converter, sweep mechanism, industrial personal computer, computer, work
Principle are as follows: supersonic detector generates the burst pulse incentive probe of high frequency, by the extremely short impulse ultrasound of probe emission duration
Wave is propagated in by spy workpiece by couplant；Reflection is generated when encountering the heterogeneous interfaces such as defect or bottom surface, reflection surpasses
Sound echo is received by probe, and is converted into electric signal in instrument oscillography screen display reflected impulse echo, according to the shape of echo
State (waveform shape, height and position on a timeline) evaluates workpiece quality situation.
It should be by calibration before ultrasonic scanning microscope use.In step 1), the water-immersed depth of PDC composite sheet is 14
~16mm.Preferably, water-immersed depth is 15mm.The depth be diamond layer upper surface to liquid level height.
In step 2), the frequency of energy converter is 35MHz, focal length 30mm.
In step 2), A- scanning window observe sample surface and faying face reflection configuration when, PDC composite sheet position
In the focus of energy converter.
By adjusting sweep parameter, good detection effect can get.In step 3), the yield value of C- scanning is not less than
15dB.Preferably, the yield value of C- scanning is 17~20dB.The scanning range of C- scanning is not less than the cross section of PDC composite sheet
Size.
The lossless detection method of PDC composite sheet faying face quality of the invention is realized using ultrasonic scanning microscope
Detection to PDC composite sheet faying face quality, this method can detecte 50 μm or more of product defects；It is different from traditional destruction
Property detection method, which will not damage product, and can differentiate defect type, position and the ruler of faying face
It is very little.Meanwhile the detection method has the characteristics that scanning speed is fast, high-efficient, and the mass scanning and detection of product may be implemented,
Effectively increase the reliability of product.
Detailed description of the invention
Fig. 1 is the pictorial diagram of PDC composite sheet sample；
Fig. 2 is the reflectogram that A- scanning is carried out to PDC composite sheet；
Fig. 3 is the scan image that C- scanning is carried out to the faying face of PDC composite sheet；
Fig. 4 is the reflectogram that the embodiment of the present invention 1 carries out A- scanning to PDC composite sheet；
Fig. 5 is the scan image that the embodiment of the present invention 1 carries out C- scanning to the faying face of PDC composite sheet；
Fig. 6 is the reflectogram that the embodiment of the present invention 2 carries out A- scanning to PDC composite sheet；
Fig. 7 is the scan image that the embodiment of the present invention 2 carries out C- scanning to the faying face of PDC composite sheet.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
The pictorial diagram of PDC composite sheet by polycrystalline diamond layer and hard alloy substrate as shown in Figure 1, formed；Utilize ultrasound
Wave flying-spot microscope carries out A- scanning to PDC composite sheet, and reflectogram is as shown in Figure 2, it may be determined that surface echo position combines
The information such as face echo position, and then can determine faying face echo area；Fig. 3 is to carry out C- scanning to the faying face of PDC composite sheet
Scan image, the defects of can intuitively finding out faying face with the presence or absence of layering, crackle, hole by scan image.
Embodiment 1
The lossless detection method of the PDC composite sheet faying face quality of the present embodiment, specimen size are Φ 16mm × 13mm, are adopted
With following steps:
Agree to symbol for dimensioning change
1) start the ultrasonic scanning microscope calibrated and carry out self-test；
2) depth of water for adjusting sink is higher than 30mm, and the horizontal water-immersed depth of control PDC composite sheet is 15mm, is kept
The diamond layer of PDC composite sheet is upward；
3) Mounting frequency is 35MHz, and focal length is the energy converter of 30mm；Energy converter is moved to above composite sheet and enters it
Water；A- scanning is carried out to PDC composite sheet, the position of energy converter is adjusted along Z-direction, when observing sample in A- scanning window
When reflection configuration (as shown in Figure 4) of surface and faying face, composite sheet is located at the focus of energy converter；
By the reflectogram of Fig. 4 it is found that surface echo position is near 7344ns, faying face echo position is in 7540ns
Near；Determine that the scanning area from 7424ns to 7579ns is faying face region to be scanned, the sweep length of the scanning area is
155ns；
4) adjusting yield value is 17dB, and scanning range is 17mm × 17mm, carries out C- scanning to faying face region to be scanned,
It is as shown in Figure 5 to obtain scan image；
By the scan image of Fig. 5 it is found that the first tooth 1, the second tooth 2, third tooth 3 have obvious white bright spot, this can determine whether
Three position polycrystalline diamond layers are not close in conjunction with hard alloy substrate, and there are lamination defects.
Embodiment 2
The lossless detection method of the PDC composite sheet faying face quality of the present embodiment, specimen size are Φ 19mm × 16mm, are adopted
With following steps:
1) start the ultrasonic scanning microscope calibrated and carry out self-test；
2) depth of water for adjusting sink is higher than 30mm, and the horizontal water-immersed depth of control PDC composite sheet is 15mm, is kept
The diamond layer of PDC composite sheet is upward；
3) Mounting frequency is 35MHz, and focal length is the energy converter of 30mm；Energy converter is moved to above composite sheet and enters it
Water；A- scanning is carried out to PDC composite sheet, the position of energy converter is adjusted along Z-direction, when observing sample in A- scanning window
When reflection configuration (as shown in Figure 6) of surface and faying face, composite sheet is located at the focus of energy converter；
By the reflectogram of Fig. 6 it is found that surface echo position is near 14080ns, faying face echo position exists
Near 14300ns；Determine that the scanning area from 14210ns to 14388ns is faying face region to be scanned, which sweeps
Retouching width is 178ns；
4) adjusting yield value is 20dB, and scanning range is 20mm × 20mm, carries out C- scanning to faying face region to be scanned,
It is as shown in Figure 7 to obtain scan image；
By the scan image of Fig. 7 it is found that the tooth form complete display of hard alloy substrate, can determine whether the PDC composite sheet plycrystalline diamond
Diamond layer is tightly combined with hard alloy substrate, and defect is not present.
Claims (5)
1. a kind of lossless detection method of PDC composite sheet faying face quality, which is characterized in that using ultrasonic scanning microscope into
Row detection, comprising the following steps:
1) upward by the diamond layer of PDC composite sheet, level is dipped in water；
2) A- scanning is carried out to PDC composite sheet, adjusts the position of energy converter, PDC composite sheet is made to be located at the focus of energy converter；According to
The reflection configuration of A- scanning determines the faying face region of PDC composite sheet；
3) C- scanning is carried out to the faying face region of PDC composite sheet and PDC composite sheet is judged according to gained ultrasonic scanning image
Faying face quality；
In step 2, A- scanning window observe sample surface and faying face reflection configuration when, PDC composite sheet be located at changes
The focus of energy device；
In step 3), the yield value of C- scanning is not less than 15dB.
2. the lossless detection method of PDC composite sheet faying face quality as described in claim 1, which is characterized in that in step 1),
The water-immersed depth of PDC composite sheet is 14~16mm.
3. the lossless detection method of PDC composite sheet faying face quality as described in claim 1, which is characterized in that in step 2,
The frequency of energy converter is 35MHz, focal length 30mm.
4. the lossless detection method of PDC composite sheet faying face quality as described in claim 1, which is characterized in that C- scanning
Yield value is 17~20dB.
5. the lossless detection method of PDC composite sheet faying face quality as described in claim 1, which is characterized in that in step 3),
The scanning range of C- scanning is not less than the cross sectional dimensions of PDC composite sheet.
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| CN106226398B true CN106226398B (en) | 2019-09-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107014904A (en) * | 2017-05-22 | 2017-08-04 | 上海市建筑科学研究院 | A kind of detection method for being used to after concrete pour superposed surfaces quality |
| CN107315012B (en) * | 2017-06-22 | 2019-10-18 | 福建省万龙新材料科技有限公司 | Composite polycrystal-diamond end face collapses the intelligent detecting method at angle |
| CN112305077B (en) * | 2020-10-27 | 2023-06-20 | 洛阳轴承研究所有限公司 | Nondestructive testing method for bonding quality of bearing surface coating and substrate interface |
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| US20110286304A1 (en) * | 2010-04-06 | 2011-11-24 | Varel Europe S.A.S. | Downhole Acoustic Emission Formation Sampling |
| US20130297231A1 (en) * | 2012-05-04 | 2013-11-07 | Baker Hughes Incorporated | Automated Method of Ultrasonically Scanning Cutters While on the Bit for Crack Detection |
| CN103808797A (en) * | 2012-11-07 | 2014-05-21 | 有研亿金新材料股份有限公司 | Method used for detecting welding quality of diffusion welding |
| CN105548364A (en) * | 2015-12-10 | 2016-05-04 | 北京理工大学 | Higher-order nonlinear parameter characterization method for bonding strength of thermal barrier coating |
| CN105467009A (en) * | 2015-12-16 | 2016-04-06 | 中国科学院工程热物理研究所 | Nondestructive testing method for judging position of wind turbine blade beam cap |
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