CN106226398A - 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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- CN106226398A CN106226398A CN201610604494.3A CN201610604494A CN106226398A CN 106226398 A CN106226398 A CN 106226398A CN 201610604494 A CN201610604494 A CN 201610604494A CN 106226398 A CN106226398 A CN 106226398A
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- composite sheet
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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
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses the lossless detection method of a kind of PDC composite sheet faying face quality.This detection method utilizes ultrasonic scanning microscope to detect, and comprises the following steps: 1) by the diamond layer of PDC composite sheet upward, level is dipped in water；2) PDC composite sheet is carried out A scanning, the position of regulation transducer, make PDC composite sheet be positioned at the focus of transducer；Reflection configuration according to A scanning determines the faying face region of PDC composite sheet；3) the faying face region of PDC composite sheet is carried out C scanning, according to gained ultrasonic scanning image, it is judged that the faying face quality of PDC composite sheet.Being different from traditional destructive detection method, product will not be damaged by this detection method, and can differentiate the defect type of faying face, positions and dimensions；Have the advantages that scanning speed is fast, efficiency is high, it is possible to achieve the mass scanning of product and detection, be effectively increased the reliability of product.
Description
Technical field
The invention belongs to Non-Destructive Testing and the assessment technique field of ultrasound wave, be specifically related to a kind of PDC composite sheet faying face
The lossless detection method of quality.
Background technology
The stratiform that PDC composite sheet is polycrystalline diamond layer and hard alloy substrate sinters under high-temperature and high-pressure conditions is multiple
Fit.PDC composite sheet has good intensity, wearability and shock resistance, be widely used in machine tools, oil and
The field 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 on faying face, crackle, hole all can cause diamond layer cracking or come off, and had a strong impact on PDC multiple
Close serviceability and the service life of sheet.At present, ball falling impact method is mainly taked in the quality testing to PDC composite sheet bond strength
Deng destructive detection method, it is difficult to the time of day in reaction bonded face, also cannot realize the mass inspection of product.
Summary of the invention
It is an object of the invention to provide the lossless detection method of a kind of PDC composite sheet faying face quality, thus solve existing
Detection method, it is impossible to the time of day in reaction bonded face, it is impossible to realize mass inspection purpose.
In order to realize object above, the technical solution adopted in the present invention is:
The lossless detection method of a kind of PDC composite sheet faying face quality, utilizes ultrasonic scanning microscope to detect, bag
Include following steps:
1) by the diamond layer of PDC composite sheet upward, level is dipped in water；
2) PDC composite sheet is carried out A-scanning, the position of regulation transducer, make PDC composite sheet be positioned at the focus of transducer；
Reflection configuration according to A-scanning determines the faying face region of PDC composite sheet；
3) the faying face region of PDC composite sheet is carried out C-scanning, according to gained ultrasonic scanning image, it is judged that PDC is multiple
Close the faying face quality of sheet.
Ultrasound wave surface sweeping microscope by including that transducer, sweep mechanism, industrial computer, the parts of computer are constituted, its work
Principle is: ultrasonic reflectoscope produces the burst pulse incentive probe of high frequency, the impulse ultrasound extremely short by probe emission duration
Ripple, is being visited propagation in workpiece by couplant；Reflection is i.e. produced, surpassing of reflection when running into the heterogeneous interface such as defect or bottom surface
Sound echo is popped one's head in reception, and is converted into the signal of telecommunication at instrument oscillography screen display reflected impulse echo, according to the shape of echo
Workpiece quality situation is evaluated by state (waveform shape, height and position on a timeline).
Ultrasonic scanning microscope should be through calibration before using.Step 1) in, the water-immersed degree of depth of PDC composite sheet is 14
～16mm.Preferably, the water-immersed degree of depth is 15mm.The described degree of depth is the upper surface height to liquid level of diamond layer.
Step 2) in, the frequency of transducer is 35MHz, and focal length is 30mm.
Step 2) in, when A-scanning window observes the reflection configuration of the surface of sample and faying face, PDC composite sheet position
Focus in transducer.
By regulation sweep parameter, good Detection results can be obtained.Step 3) in, the yield value of C-scanning is not less than
15dB.Preferably, the yield value of C-scanning is 17～20dB.The sweep limits of C-scanning is not less than the cross section of PDC composite sheet
Size.
The lossless detection method of the PDC composite sheet faying face quality of the present invention, utilizes ultrasonic scanning microscope, it is achieved that
Detection to PDC composite sheet faying face quality, the method can detect the product defects of more than 50 μm；It is different from traditional destruction
Property detection method, product will not be damaged by this detection method, and can differentiate the defect type of faying face, position and chi
Very little.Meanwhile, this detection method has the advantages that scanning speed is fast, efficiency is high, it is possible to achieve the mass scanning of product and detection,
It is effectively increased the reliability of product.
Accompanying drawing explanation
Fig. 1 is the pictorial diagram of PDC composite sheet sample；
Fig. 2 is the reflectogram that PDC composite sheet carries out A-scanning；
Fig. 3 is the scanogram that the faying face to PDC composite sheet carries out C-scanning；
Fig. 4 is that the embodiment of the present invention 1 carries out the reflectogram of A-scanning to PDC composite sheet；
Fig. 5 is that the embodiment of the present invention 1 carries out the scanogram of C-scanning to the faying face of PDC composite sheet；
Fig. 6 is that the embodiment of the present invention 2 carries out the reflectogram of A-scanning to PDC composite sheet；
Fig. 7 is that the embodiment of the present invention 2 carries out the scanogram of C-scanning to the faying face of PDC composite sheet.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
The pictorial diagram of PDC composite sheet is as it is shown in figure 1, formed by polycrystalline diamond layer and hard alloy substrate；Utilize ultrasonic
Ripple scanning 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, combination
The information such as face echo position, and then can determine that faying face echo area；Fig. 3 is that the faying face to PDC composite sheet carries out C-scanning
Scanogram, can intuitively be found out whether faying face exists the defects such as layering, crackle, hole by scanogram.
Embodiment 1
The lossless detection method of the PDC composite sheet faying face quality of the present embodiment, specimen size is Φ 16mm × 13mm, adopts
By following steps:
Agree to symbol for dimensioning change
1) start the ultrasonic scanning microscope calibrated and carry out self-inspection；
2) depth of water of regulation tank is higher than 30mm, and controlling the PDC water-immersed degree of depth of composite sheet level is 15mm, keeps
The diamond layer of PDC composite sheet is upward；
3) Mounting frequency is 35MHz, and focal length is the transducer of 30mm；Transducer moved to above composite sheet and make it enter
Water；PDC composite sheet is carried out A-scanning, along the position of Z-direction regulation transducer, when observing sample at A-scanning window
During the reflection configuration (as shown in Figure 4) of surface and faying face, composite sheet is positioned at the focus of transducer；
From the reflectogram of Fig. 4, surface echo position is near 7344ns, and faying face echo position is at 7540ns
Near；Determining that the scanning area from 7424ns to 7579ns is faying face region to be scanned, the sweep length of this scanning area is
155ns；
4) regulation yield value is 17dB, and sweep limits is 17mm × 17mm, and faying face region to be scanned is carried out C-scanning,
Obtain scanogram as shown in Figure 5；
From the scanogram of Fig. 5, first tooth the 1, second tooth the 2, the 3rd tooth 3 all has substantially white bright spot, can determine whether this
Three position polycrystalline diamond layers are combined not tight with hard alloy substrate, there is lamination defect.
Embodiment 2
The lossless detection method of the PDC composite sheet faying face quality of the present embodiment, specimen size is Φ 19mm × 16mm, adopts
By following steps:
1) start the ultrasonic scanning microscope calibrated and carry out self-inspection；
2) depth of water of regulation tank is higher than 30mm, and controlling the PDC water-immersed degree of depth of composite sheet level is 15mm, keeps
The diamond layer of PDC composite sheet is upward；
3) Mounting frequency is 35MHz, and focal length is the transducer of 30mm；Transducer moved to above composite sheet and make it enter
Water；PDC composite sheet is carried out A-scanning, along the position of Z-direction regulation transducer, when observing sample at A-scanning window
During the reflection configuration (as shown in Figure 6) of surface and faying face, composite sheet is positioned at the focus of transducer；
From the reflectogram of Fig. 6, surface echo position is near 14080ns, and faying face echo position exists
Near 14300ns；Determine that the scanning area from 14210ns to 14388ns is faying face region to be scanned, sweeping of this scanning area
Retouching width is 178ns；
4) regulation yield value is 20dB, and sweep limits is 20mm × 20mm, and faying face region to be scanned is carried out C-scanning,
Obtain scanogram as shown in Figure 7；
From the scanogram of Fig. 7, the profile of tooth complete display of hard alloy substrate, can determine whether this PDC composite sheet glomerocryst
Diamond layer is tightly combined with hard alloy substrate, not existing defects.
Claims (7)
1. the lossless detection method of a PDC composite sheet faying face quality, it is characterised in that utilize ultrasonic scanning microscope to enter
Row detection, comprises the following steps:
1) by the diamond layer of PDC composite sheet upward, level is dipped in water；
2) PDC composite sheet is carried out A-scanning, the position of regulation transducer, make PDC composite sheet be positioned at the focus of transducer；According to
The reflection configuration of A-scanning determines the faying face region of PDC composite sheet；
3) the faying face region of PDC composite sheet is carried out C-scanning, according to gained ultrasonic scanning image, it is judged that PDC composite sheet
Faying face quality.
2. the lossless detection method of PDC composite sheet faying face quality as claimed in claim 1, it is characterised in that step 1) in,
The water-immersed degree of depth of PDC composite sheet is 14～16mm.
3. the lossless detection method of PDC composite sheet faying face quality as claimed in claim 1, it is characterised in that step 2) in,
The frequency of transducer is 35MHz, and focal length is 30mm.
4. the lossless detection method of PDC composite sheet faying face quality as claimed in claim 1, it is characterised in that step 2) in,
When A-scanning window observes the reflection configuration of the surface of sample and faying face, PDC composite sheet is positioned at the focus of transducer.
5. the lossless detection method of the PDC composite sheet faying face quality as described in claim 1 or 3, it is characterised in that step 3)
In, the yield value of C-scanning is not less than 15dB.
6. the lossless detection method of PDC composite sheet faying face quality as claimed in claim 5, it is characterised in that C-scanning
Yield value is 17～20dB.
7. the lossless detection method of PDC composite sheet faying face quality as claimed in claim 1, it is characterised in that step 3) in,
The sweep limits of C-scanning is not less than the cross sectional dimensions of PDC composite sheet.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107315012A (en) * | 2017-06-22 | 2017-11-03 | 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 |
| CN112305077A (en) * | 2020-10-27 | 2021-02-02 | 洛阳轴承研究所有限公司 | Nondestructive testing method for bonding quality of bearing surface coating and matrix interface |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107315012A (en) * | 2017-06-22 | 2017-11-03 | 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 |
| 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 |
| CN112305077A (en) * | 2020-10-27 | 2021-02-02 | 洛阳轴承研究所有限公司 | Nondestructive testing method for bonding quality of bearing surface coating and matrix interface |
| 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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Effective date of registration: 20180510 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Applicant after: Luoyang Bearing Research Institute Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Applicant before: Zhouyan Science and Technology Co., Ltd., Luoyang |
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