CN206038623U - Special test block of harmless evaluation of laser coating quality supersound - Google Patents
Special test block of harmless evaluation of laser coating quality supersound Download PDFInfo
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- CN206038623U CN206038623U CN201621078878.8U CN201621078878U CN206038623U CN 206038623 U CN206038623 U CN 206038623U CN 201621078878 U CN201621078878 U CN 201621078878U CN 206038623 U CN206038623 U CN 206038623U
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Abstract
The utility model discloses a special test block of harmless evaluation of laser coating quality supersound, include rectangular test block body and set up at this internal a plurality of artifical reflector of this test block, the test block body comprises basic unit that is located upper portion and the coating that is located the lower part, the shape of artifical reflector for the plane appears, flat hole shape and have a perfect understanding the hole shape in any one or several kinds. Through 3 kinds of artifical reflectors can detect cover slabbing line class defect and coating and basic unit's large tracts of land layering class defect, coating and substrate layering and, type of not melting defect and cover slabbing line class defect, flat hole shape manual work reflector through the different degree of depth can carry out quantitative analysis to the defect buried depth, having a perfect understanding the artifical reflector of hole shape and can carry out quantitative analysis to the defect buried depth through the same aperture, different buried depths.
Description
Technical field
The utility model is related to laser melting coating manufacture field, and more particularly to a kind of laser coating ultrasonic nonodestruction evaluation is special
Test block.
Background technology
Using laser melting coating process technology, can directly process for the specific works condition of metal parts and performance requirement
Prepare the material with property, parts or structural member；Laser melting coating coating is with being metallurgical between metal parts base material
With reference to its chemical composition, microscopic structure and performance can be totally different from metal parts base material and not limited by base material, laser
The thickness of cladding coating, chemical composition, microscopic structure and performance can carry out flexible design and control according to part time job condition
System.The applicable surface of laser melting and coating technique is very wide, directly can be widely used in titanium alloy, high temperature alloy, ferrous materials, aluminium alloy,
The surface of nearly all metal material such as copper alloy is modified, and can increase substantially the table such as wear-resisting, anti-corrosion, anti-oxidant of metal parts
Face performance；Laser beam energy is concentrated, heat affected area is minimum, and Laser Cladding Treatment is little to the fire damage of metal parts, thermal deformation is little.
But, the quality problems such as cracks of cladding layer, pore always hinder the technology further wide variety of difficult point.Crackle
It is mainly relevant with laser parameter, PROCESS FOR TREATMENT condition, clad material, matrix situation etc..The producing cause of crackle mainly due to
Cladding material is had differences in terms of physical property with matrix material, in addition the quick heating of high-energy-density laser beam and matrix
Chilling action, produces great thermal stress in making coating.When local tension exceedes the strength degree of coating material, will produce
Raw crackle.Due to dendrite circle of coating, pore, to be mingled with place's intensity relatively low and be easy to produce stress concentration, therefore, crackle often exists
These positions produce.Particularly multi-track overlapping laser melting coating when, due to being overlapped mutually for residual stress, coating tearing tendency is more
Greatly.Pore is also the defect of Jing often appearance in laser coating.On the one hand, due under conditions of laser rapid solidification, in molten bath
Gas have little time effusion；On the other hand, as the time of laser molten pool presence is extremely short, deoxidation slagging process is insufficient, melt
Middle aerobic or oxide residual, carbon generate CO or CO with oxygen reaction2Gas.For non-self-melting alloy, due to no boron, silicon unit
The deoxidation slag making of element, is more likely formed pore in coating.Powerful wideband laser particularly of new generation is on melting and coating technique
Using cracking can't be solved well, pore and be mingled with.
It can be seen that, can obtain using laser melting and coating technique that heat affected area is little, organize fine and closely woven, dilution rate is low and interface cohesion
Firm metallurgical metal coating, in the application of the field of industrial production such as material preparation, increasing material manufacturing and spare parts remanufacture reparation
It is more and more extensive.Therefore, effective nondestructive characterisation (NDC) and evaluation are carried out to coating quality, is optimization laser melting and coating process, constantly promotees
Enter the key of the application of laser melting and coating technique.
Ultrasound detection (Ultrasonic Testing, be abbreviated as UT) is to instigate ultrasonic wave to interact with workpiece, just anti-
Penetrate, transmit, scattering and diffracted wave is studied, carrying out gross imperfection detection, geometrical property measurement, institutional framework and power to workpiece
Learn detection and the sign of performance change, and and then the technology evaluated to its application-specific.
Ultrasonic testing system mainly includes：Supersonic reflectoscope, probe, couplant, test block and auxiliary appliance etc..
Used as the important component part of ultrasonic testing system, test block includes reference block and reference block.
Reference block refers to the material block of the chemical composition with regulation, surface roughness, heat treatment and geometry, uses
In evaluating and calibrating ultrasonic detection equipment, i.e., for the test block of instrument probe systematic function calibration.Such as No. 20 high-quality carbon knots
The test blocks such as structure steel CSK IA, DZ I and DZ P.
Reference block refer to it is similar to the chemical composition of detected pieces or material, containing it is meaningful clearly with reference to reflector (reflection
Body should be made using machining mode) test block, to adjust amplitude and the sound path of ultrasonic detection equipment, by detected lack
Sunken signal compared with the signal produced by known reflector, i.e., for the test block of examination criteria.Such as CS 1, CS 2,
The test blocks such as CS 3, CS 4, RB 1, RB 2, RB 3.
The content of the invention
The purpose of this utility model provides a series of Special test blocks, is to set up a complete set of laser coating ultrasonic nonodestruction evaluation system
System provides necessary hardware supported, to solve the problems, such as that laser coating criteria of quality evaluation is lacked.
For this purpose, the technical solution of the utility model is as follows：
A kind of laser coating quality ultrasound Nondestructive Evaluation Special test block, including rectangular test block body and being arranged on the examination
Multiple artificial reflector in block body, the test block body are made up of superposed basic unit and the coating positioned at bottom, institute
State artificial reflector be shaped as in planar shaped, flat-bottom hole shape and through hole shape any one or a few,
When reflector artificial using planar shaped, the artificial reflector of the planar shaped test block body two ends basic unit and cover
Each at layer faying face to arrange one, the width of the artificial reflector of two planar shapeds is identical with the width of test block body, length difference；
When reflector artificial using flat-bottom hole shape, the artificial reflector of the flat-bottom hole shape arranges aperture on test block body
Two groups of identical, the artificial reflector of two groups of flat-bottom hole shapes are originally extended vertically from basic unit and clad surface in vivo to test block respectively, often
The artificial reflector interval setting of multiple flat-bottom hole shapes of group and in vivo vertically extending depth is different to test block sheet.
When reflector artificial using through hole shape, the artificial reflector of the through hole shape is in test block body in length side
Multigroup, the aperture difference of each group is set up, is made up of interval setting, the multiple through holes of aperture identical per group, and it is described many
Individual through hole is perpendicular to the side of test block body and is located at coating and basic unit's faying face or at nearly faying face.
Preferably, the length of the artificial reflector of described two planar shapeds is respectively 5mm and 20mm.
Preferably, the artificial reflector of every group of flat-bottom hole shape is made up of 3 flat-bottom holes, the bottom position of 3 flat-bottom holes
Put the faying face 1mm respectively apart from basic unit and coating, on the faying face of basic unit and coating and cross basic unit and coating
Faying face 1mm.
It is further preferred that the aperture of each flat-bottom hole is 0.5mm, 1mm, 1.5mm, 2mm or 3mm, between each flat-bottom hole
Distance is 25mm.
Preferably, above-mentioned flat-bottom hole in the length direction of the test block body along center line interval setting.
The size of above-mentioned test block body is 200mm*20mm*13mm, and the thickness of the coating is 3mm.
In one embodiment of the present utility model, the artificial reflector of the through hole shape is provided with 3 on test block body
Group, per group of aperture are respectively 0.5mm, 1mm and 2mm, and the spacing between each hole is 25mm.It is of the present utility model another
In embodiment, the artificial reflector of the through hole shape is provided with 3 groups on test block body, per group of aperture be respectively 1.5mm,
2mm and 3mm, the spacing between each hole are 25mm.It is in the two embodiments, described artificial by 3 through hole shapes per group
Reflector is constituted, the artificial reflector of 3 through hole shapes be located in basic unit respectively at faying face 1mm, at faying face and
In coating at faying face 1mm.
The size of the above-mentioned test block body for being provided with the artificial reflector of through hole shape be 250mm*20mm*13mm, the coating
Thickness be 3mm.
Laser coating ultrasonic nonodestruction evaluation Special test block of the present utility model has the beneficial effect that：
(1) detect that cracks of cladding layer class defect and coating and basic unit's large area are layered class and lack by the artificial reflector of planar shaped
Fall into.
(2) by the detectable coating of the artificial reflector of flat-bottom hole shape and base material layering, molten class defect.Due to being provided with not
With the artificial reflector of flat-bottom hole shape of depth, therefore quantitative analysis can be carried out to defect buried depth.
(3) by the artificial reflector of through hole shape, can detect cracks of cladding layer class defect；Due in coating and basic unit's faying face
The different through hole in multigroup aperture is provided with place or nearly faying face, and the through hole shape by same apertures, different buried depth is manually anti-
Beam can carry out quantitative analysis to defect buried depth.
Description of the drawings
Fig. 1 a-1c are the cross sectional shape schematic diagrames of 3 kinds of artificial reflectors in the utility model；
Fig. 2 a are the main view generalized sections of the test block of the utility model one embodiment；
Fig. 2 b are the birds-eye perspectives of test block shown in Fig. 2 a；
Fig. 3 a are the schematic front view of the test block of another embodiment of the utility model；
Fig. 3 b are the cross-sectional views in test block shown in Fig. 3 a at artificial reflector position；
Fig. 4 is the using method schematic diagram of the Special test block of Fig. 2 a, 2b illustrated embodiments；
Fig. 5 is the using method schematic diagram of the Special test block of Fig. 3 a, 3b illustrated embodiments.
Specific embodiment
Below in conjunction with the accompanying drawings the structure of laser coating ultrasonic nonodestruction evaluation Special test block of the present utility model is carried out in detail
Explanation.
In the utility model, according to the characteristics of laser coating ultrasound detection, the shape of the artificial reflector of test block is set
Planar shaped, flat-bottom hole shape and through hole shape is set to, totally 3 kinds.The cross sectional shape of 3 kinds of artificial reflectors is as illustrated by figures 1 a-1 c.
In order to distinguish with existing test block, by the laser coating ultrasonic nonodestruction evaluation Special test block in the utility model
The serial number of (Laser Cladding Reference Block, hereinafter referred to as " test block ") is set to LRB *, wherein " * " generation
Watch series number.
Basic unit's material of test block, coating material all should be same or like with checked object, below in an example, test block
Basic unit's material is No. 20 steel, and test block coating material is Fe314.
Coating is processed using laser melting and coating technique, and artificial reflector is made using machining mode.Specifically, planar shaped people
Work reflector is prepared using wire cutting technology；The artificial reflector of flat-bottom hole shape is prepared using spark machined；Through hole shape is artificial
Reflector adopts electric spark or machining to prepare.
Special test block in the present embodiment be divided into two it is serial, i.e. LRB I series and LRB II it is serial.Wherein LRB I
Serial test block has 5 models, and LRB II series test blocks have 2 models, the size of 7 model test blocks and aperture to be shown in Table 1.
Table 1LRB series test block dimensional units：mm
Fig. 2 a, 2b show the structural representation of 4 type test blocks of LRB I in table 1, and the series other model test blocks can be joined
Make according to Fig. 2.Fig. 3 a, 3b show the structural representation of 1 type test blocks of LRB II in table 1, and the series other model test blocks can
Make with reference to Fig. 3.
Referring to the Special test block shown in Fig. 2 a, 2b, in figure, the size of test block body is 200mm*20mm*13mm, coating
Thickness is 3mm, and groundwork thickness is 10mm；The artificial reflector of planar shaped is each at the basic unit at test block body two ends and coating faying face
One is arranged, the width of the artificial reflector of two planar shapeds is identical with the width of test block body, length difference.Shown in the figure
In embodiment, the length of the artificial reflector of planar shaped is 5mm, and another length is 20mm.
The artificial reflector of two groups of flat-bottom hole shapes is additionally provided with above-mentioned test block, and this two groups of artificial reflectors are in test block body
Length direction is along center line interval setting, and aperture is identical, and one of which is originally extended vertically from the surface of basic unit in vivo to test block, and one
Group is originally extended vertically from the surface of coating in vivo to test block.There are the artificial reflector of 3 flat-bottom hole shapes, the bottom of 3 flat-bottom holes per group
Portion position is respectively apart from the faying face 1mm of basic unit and coating, on the faying face of basic unit and coating and crosses basic unit and cover
The faying face 1mm of layer.The distance between each flat-bottom hole is 25mm, and the aperture of flat-bottom hole shown in figure is 2mm.
Referring to the Special test block shown in Fig. 3 a, 3b, in figure, the size of test block body is 250mm*20mm*13mm, coating
Thickness is 3mm, and groundwork thickness is 10mm.It is provided with 3 groups of through hole shapes altogether manually to reflect on Special test block body shown in the figure
Body, the aperture of the artificial reflector of every group of through hole shape are respectively 0.5mm, 1mm and 1.5mm, and the spacing between each hole is 25mm.
Every group of through hole is made up of interval setting, 3 through holes of aperture identical, and 3 through holes are perpendicular to test block body
Side and respectively be located at basic unit at faying face 1mm, at faying face and in coating at faying face 1mm.
Its purposes and using method are illustrated with reference to the Special test block in embodiment.
The main application and operation instruction of 1.LRB I type test blocks
The type test block is mainly provided with planar shaped and the artificial reflector of flat-bottom hole shape, for detecting basic unit's (base material) and coating
The defect of interface, can equivalent evaluation layering, crackle or hole class defect.Referring to Fig. 4, its using method is as follows：
(1) probe is placed in position shown in laser coating side 1, detects cracks of cladding layer class defect；
(2) checked object can not can detect cracks of cladding layer class in position shown in substrate side 2 in coating side examinations
Defect；
(3) probe is placed in position shown in coating side 3, detection coating and base material layering, molten class defect；
(4) checked object can not can detect coating and base material in position shown in substrate side 4 in coating side examinations
Layering, molten class defect；
(5) probe is placed in position shown in coating side 5, detection coating and basic unit's large area layering class defect；
(6) checked object can not can detect coating and basic unit in position shown in basic unit side 6 in coating side examinations
Large area lamination defect；
The test block other manually reflect body function and using method at 4 ibid.Other artificial reflectors of model flat-bottom hole shape
Function and using method, in can refer to figure, 3 or 4 positions are detected；
Due to the artificial reflector of flat-bottom hole that the test block has made different depth, therefore defect buried depth can quantitatively be divided
Analysis；
When the property difference such as coating and basic unit's velocity of sound, acoustic impedance, acoustic attenuation is larger, (the basic unit in same medium is tackled
Or coating) the ultrasonic wave sound travel propagated is analyzed, and be defined by surveying.
The main application and operation instruction of 2.LRB II type test blocks
The type test block is mainly provided with the artificial reflector of through hole shape, for detect basic unit's (base material) and clad interface or
Defect inside coating, can equivalent evaluation layering, crackle or hole class defect.Referring to Fig. 4, its using method is as follows：
(1) probe is placed in artificial reflector position directly above shown in laser coating side 1, detects cracks of cladding layer class defect；
(2) checked object can not can detect cracks of cladding layer class in position shown in basic unit side 2 in coating side examinations
Defect；
(3) other manually reflect body function and using method at 8 ibid；
Above-mentioned test block, at coating with basic unit's faying face or at nearly faying face, the through hole for having three groups of apertures different can be right
Defect carries out quantitative analysis.In addition, the artificial reflector of through hole shape by same apertures, different buried depth can enter to defect buried depth
Row quantitative analysis.
When the property difference such as coating and basic unit's velocity of sound, acoustic impedance, acoustic attenuation is larger, (the basic unit in same medium is tackled
Or coating) the ultrasonic wave sound travel propagated is analyzed, and be defined by surveying.
Claims (10)
1. a kind of laser coating quality ultrasound Nondestructive Evaluation Special test block, it is characterised in that：Including rectangular test block body and
The intrinsic multiple artificial reflectors of the test block are arranged on, the test block body is by superposed basic unit and covering positioned at bottom
Layer composition, the artificial reflector be shaped as in planar shaped, flat-bottom hole shape and through hole shape any one or a few,
When reflector artificial using planar shaped, the artificial reflector of the planar shaped test block body two ends basic unit and coating tie
Conjunction face place respectively arranges one, and the width of the artificial reflector of two planar shapeds is identical with the width of test block body, length difference；
When reflector artificial using flat-bottom hole shape, it is identical that the artificial reflector of the flat-bottom hole shape arranges aperture on test block body
Two groups, the artificial reflector of two groups of flat-bottom hole shapes is originally extended vertically from basic unit and clad surface in vivo to test block respectively, per group
The artificial reflector interval setting of multiple flat-bottom hole shapes and vertically extending depth is different in vivo to test block sheet；
When reflector artificial using through hole shape, the artificial reflector of the through hole shape in the test block body in the longitudinal direction
Arrange multigroup, the aperture of each group is different, is made up of interval setting, the multiple through holes of aperture identical per group, and the plurality of pass through
Through hole is perpendicular to the side of test block body and is located at coating and basic unit's faying face or at nearly faying face.
2. laser coating quality ultrasound Nondestructive Evaluation Special test block according to claim 1, it is characterised in that：It is described two
The length of the artificial reflector of planar shaped is respectively 5mm and 20mm.
3. laser coating quality ultrasound Nondestructive Evaluation Special test block according to claim 1, it is characterised in that：Per group flat
Shape artificial reflector in hole is made up of 3 flat-bottom holes, and the bottom position of 3 flat-bottom holes is respectively apart from basic unit and the knot of coating
Conjunction face 1mm, on the faying face of basic unit and coating and cross the faying face 1mm of basic unit and coating.
4. laser coating quality ultrasound Nondestructive Evaluation Special test block according to claim 3, it is characterised in that：Each flat-bottom hole
Aperture be the distance between 0.5mm, 1mm, 1.5mm, 2mm or 3mm, each flat-bottom hole and be 25mm.
5. laser coating quality ultrasound Nondestructive Evaluation Special test block according to claim 4, it is characterised in that：It is described flat
Hole the test block body length direction along center line interval setting.
6. the laser coating quality ultrasound Nondestructive Evaluation Special test block according to any one of claim 2-5, its feature exist
In：The size of the test block body is 200mm*20mm*13mm, and the thickness of the coating is 3mm.
7. laser coating quality ultrasound Nondestructive Evaluation Special test block according to claim 1, it is characterised in that：The insertion
Shape artificial reflector in hole is provided with 3 groups on test block body, and per group of aperture is respectively 0.5mm, 1mm and 1.5mm, between each hole
Spacing be 25mm.
8. laser coating quality ultrasound Nondestructive Evaluation Special test block according to claim 1, it is characterised in that：The insertion
Shape artificial reflector in hole is provided with 3 groups on test block body, and per group of aperture is respectively 1.5mm, 2mm and 3mm, between each hole
Spacing is 25mm.
9. the laser coating quality ultrasound Nondestructive Evaluation Special test block according to claim 7 or 8, it is characterised in that：It is described
It is made up of the artificial reflector of 3 through hole shapes per group, the artificial reflector of 3 through hole shapes is located at distance knot in basic unit respectively
At the 1mm of conjunction face, at faying face and coating at faying face 1mm.
10. laser coating quality ultrasound Nondestructive Evaluation Special test block according to claim 9, it is characterised in that：The examination
The size of block body is 250mm*20mm*13mm, and the thickness of the coating is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621078878.8U CN206038623U (en) | 2016-09-26 | 2016-09-26 | Special test block of harmless evaluation of laser coating quality supersound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621078878.8U CN206038623U (en) | 2016-09-26 | 2016-09-26 | Special test block of harmless evaluation of laser coating quality supersound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206038623U true CN206038623U (en) | 2017-03-22 |
Family
ID=58296894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201621078878.8U Expired - Fee Related CN206038623U (en) | 2016-09-26 | 2016-09-26 | Special test block of harmless evaluation of laser coating quality supersound |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802325A (en) * | 2016-11-28 | 2017-06-06 | 中车齐齐哈尔车辆有限公司 | The test device and detection method of acoustic axis angle of deviation |
| CN110824021A (en) * | 2019-11-12 | 2020-02-21 | 中广核检测技术有限公司 | A standard test block subassembly for additive manufacturing nondestructive test |
| WO2020047848A1 (en) * | 2018-09-07 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Reference test block for phased array ultrasonic detection of small-diameter pipe welding connector |
| CN112525996A (en) * | 2020-12-08 | 2021-03-19 | 中国科学院金属研究所 | Ultrasonic imaging detection method for isotropic pyrolytic graphite |
| US20210172911A1 (en) * | 2018-07-26 | 2021-06-10 | Vallourec Tubos Do Brasil Ltda. | Method for assessing inclusive level in steel tubes using high frequency transducer in the automatic ultrasound inspection |
-
2016
- 2016-09-26 CN CN201621078878.8U patent/CN206038623U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802325A (en) * | 2016-11-28 | 2017-06-06 | 中车齐齐哈尔车辆有限公司 | The test device and detection method of acoustic axis angle of deviation |
| CN106802325B (en) * | 2016-11-28 | 2019-10-25 | 中车齐齐哈尔车辆有限公司 | The test device and detection method of acoustic axis angle of deviation |
| US20210172911A1 (en) * | 2018-07-26 | 2021-06-10 | Vallourec Tubos Do Brasil Ltda. | Method for assessing inclusive level in steel tubes using high frequency transducer in the automatic ultrasound inspection |
| WO2020047848A1 (en) * | 2018-09-07 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Reference test block for phased array ultrasonic detection of small-diameter pipe welding connector |
| CN110824021A (en) * | 2019-11-12 | 2020-02-21 | 中广核检测技术有限公司 | A standard test block subassembly for additive manufacturing nondestructive test |
| CN112525996A (en) * | 2020-12-08 | 2021-03-19 | 中国科学院金属研究所 | Ultrasonic imaging detection method for isotropic pyrolytic graphite |
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