CN109270171A - A kind of probe clamping device and its application - Google Patents
A kind of probe clamping device and its application Download PDFInfo
- Publication number
- CN109270171A CN109270171A CN201811392585.0A CN201811392585A CN109270171A CN 109270171 A CN109270171 A CN 109270171A CN 201811392585 A CN201811392585 A CN 201811392585A CN 109270171 A CN109270171 A CN 109270171A
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- Prior art keywords
- probe
- applanation
- sensor
- clamping device
- digital display
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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
- G01N29/22—Details, e.g. general constructional or apparatus details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0071—Creep
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
-
- 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
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of probe clamping device of technical field of detection of metal and its applications, including heavy flat-nose pliers, applanation sensor, pressure digital display instrument and examined workpiece, the bottom of heavy flat-nose pliers is equipped with applanation sensor, applanation covers disposed on sensor has pressure digital display instrument, the bottom of applanation sensor is equipped with transmitting probe, and the bottom of transmitting probe is equipped with receiving transducer by examined workpiece；The present invention carries out digital display to the contact pressure between ultrasonic probe and workpiece by using applanation sensor and pressure digital display instrument, engineering staff can be made to have unified examination criteria during practical ultrasonic evaluation, the Stability and veracity for improving nonlinear acoustics detection solves the problems, such as how coupled during non-linear detection between ultrasonic probe workpiece.
Description
Technical field
The present invention relates to technical field of detection of metal, and in particular to a kind of probe clamping device and its application.
Background technique
9%Cr refractory steel is that a kind of novel ferrite for being widely used in China's super (super-) critical thermal power unit boiler is heat-resisting
Steel, mainly includes T/P91 steel, T/P92 steel and E911 steel etc., they have good thermophysical property, thermal fatigue resistance
And very excellent high temperature creep property, therefore be widely used in China's extra-supercritical unit main steam line,
The components such as header, posted sides pipeline.Under fired power generating unit military service service condition, the structure property of 9%Cr Heat Resistant Steel Welded Joints is
Determine component safe operation key, the welding point of this kind of steel in high temperature long-time creep process, heat affected area it is thin
(FGHAZ) is easy to appear creep hole for crystalline region.The latter stage of component creep life is arrived, creep hole connects into IV type crackle, makes
It obtains creep rupture to frequently occur in this region, becomes a kind of pernicious creep rupture.
Non-linear ultrasonic technology is a kind of lossless detection method for being expected to the assessment above problem, utilizes non-linear ultrasonic system
When exciting in high energy radio frequency (RF) pulse to examined workpiece, ultrasonic wave can be with material internal microdefect phase interaction in communication process
With so that the fundamental wave in frequency domain is distorted and causes second_harmonic generation.In non-linear ultrasonic measurement, A1With A2Generation respectively
The table amplitude of primary wave and the amplitude of second harmonic.However, domestic and foreign scholars have found in research, detected in non-linear ultrasonic
In the process, ultrasonic probe and the fixation of measured workpiece with to couple be the difficult point institute for influencing nonlinear measurement Stability and veracity
?.Non-linear ultrasonic several times is carried out to the same position of examined workpiece to assess, under difference coupling pretightning forces it is corresponding measure it is non-thread
Property parameter fluctuation it is very big, this not only result in measurement result repeatability it is very poor, but also the assessment of non-linear ultrasonic loses
Standard, this problem also become the problem of limitation non-linear ultrasonic technology advances in the world.Based on this, the present invention is set
A kind of probe clamping device and its application are counted, to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of probe clamping device and its applications, to solve to propose in above-mentioned background technique
Existing apparatus measurement result repeatability it is very poor, and the assessment problem not up to standard of non-linear ultrasonic.
To achieve the above object, the invention provides the following technical scheme: a kind of probe clamping device and its application, including weight
The bottom of type flat-nose pliers, applanation sensor and pressure digital display instrument, the heavy type flat-nose pliers is equipped with applanation sensor, institute
Stating applanation covers disposed on sensor has pressure digital display instrument, and the bottom of the applanation sensor is equipped with transmitting probe, the hair
The bottom for penetrating probe is equipped with receiving transducer by examined workpiece.
Preferably, the heavy flat-nose pliers is connect with transmitting probe, receiving transducer and measured workpiece respectively.
Preferably, the output end of the applanation sensor passes through the input terminal of sensor conductor and pressure digital display instrument electricity
Property connection.
Preferably, the frequency of the transmitting probe is 5MHz.
Preferably, the frequency of the receiving transducer is 10MHz.
Preferably, in two planes that the heavy flat-nose pliers is contacted with measured workpiece and the applanation sensor and
Soft rubber is pasted on contact surface between transmitting probe, receiving transducer.
Compared with prior art, the beneficial effects of the present invention are: the present invention passes through heavy flat-nose pliers and applanation sensing
Device connector forms fixed device, and has used dismountable structure type.It can be realized by the spanner of rotary heavy-duty flat-nose pliers
The adjusting of pretightning force size between ultrasonic probe and measured workpiece, adjusting is simple and convenient, and can apply to different sized samples
Non-linear ultrasonic detection.Two planes that heavy flat-nose pliers fixture is contacted with measured workpiece paste upper soft rubber, while flat
Contact surface between face pressure force snesor and two ultrasonic probes also pastes soft rubber, so as to avoid connecing between metal firmly
Touching；The contact pressure between ultrasonic probe and workpiece is counted by using applanation sensor and pressure digital display instrument
It is aobvious, engineering staff can be made to have unified examination criteria during practical ultrasonic evaluation, improve nonlinear acoustics inspection
The Stability and veracity of survey solves the problems, such as how coupled during non-linear detection between ultrasonic probe workpiece.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is that present invention probe clamps apparatus structure schematic diagram.
Fig. 2 is the schematic diagram for the P92 Heat Resistant Steel Welded Joints creep rupture sample that the present invention uses.
Fig. 3 is specific size figure and the assessment position for the P92 Heat Resistant Steel Welded Joints creep rupture sample that the present invention uses
Schematic diagram.
Fig. 4 is the non-linear ultrasonic detection device SNAP-5000 schematic diagram that the present invention uses.
Fig. 5 is fixing device schematic diagram of the present invention.
Fig. 6 is the non-linear ultrasonic tables of data that the present invention measures.
In attached drawing, parts list represented by the reference numerals are as follows:
1, heavy flat-nose pliers；2, soft rubber；3, applanation sensor；4, pressure digital display instrument；5, transmitting probe；6, it receives
Probe.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-6 is please referred to, the present invention provides a kind of technical solution: a kind of probe clamping device and its application, including heavy type
The bottom of flat-nose pliers 1, applanation sensor 3, pressure digital display instrument 4 and examined workpiece, heavy flat-nose pliers 1 is passed equipped with applanation
Sensor 3, applanation sensor 3 are equipped with pressure digital display instrument 4, and the bottom of applanation sensor 3 is equipped with transmitting probe 5, hair
The bottom for penetrating probe 5 is equipped with receiving transducer 6 by examined workpiece.
Wherein, heavy flat-nose pliers 1 is connect with transmitting probe 5, receiving transducer 6 and examined workpiece respectively.
The output end of applanation sensor 3 is electrically connected by the input terminal of sensor conductor and pressure digital display instrument 4, is reached
To the purpose of contact pressure between digital transmission probe 5 and receiving transducer 6 and measured workpiece.
The frequency of transmitting probe 5 is 5MHz.
The frequency of receiving transducer 6 is 10MHz.
In two planes that heavy flat-nose pliers 1 is contacted with measured workpiece and applanation sensor 3 and transmitting probe 5, connect
It receives and is pasted with soft rubber 2 on the contact surface between probe 6, to avoid the hard contact between metal.
One concrete application of the present embodiment are as follows:
The P92 steel welded joint creep rupture sample of prefabricated 8.5mm thickness, weld seam is at the middle part of sample.It is high in RCL -3 type
Duration running is carried out according to GB 6395-97 on warm creep and stress rupture test machine, creep temperature is set as 650 DEG C, creep loading setting
For 90MPa.Load precision is better than ± 1%, and temperature-controlled precision is better than ± 3%, along the specimen length direction temperature difference less than 3 DEG C.Obtain P92
The life-span of creep rupture of steel welded joint is 1560h, and the position of fracture occurs in the heat affected area of welding point.It is non-in order to use
Reaction of the linear ultrasonic technology evaluation P92 steel welded joint under different creep impairment degree, establishes nonlinear parameter and creep
Quantitative relationship between hole.The present embodiment simulates the different creep impairment degree of P92 steel welded joint, i.e., is being broken respectively
20% (312h) in service life, 40% (624h), 60% (936h), 80% (1248h) stop test, it is compacted to obtain above-mentioned several differences
Damage sample after becoming the time.
The non-linear ultrasonic equipment SNAP-5000 produced using RITEC company of the U.S. is to the sample after different creep times
Carry out non-linear ultrasonic assessment.Since the welding point that heat affected area fine grained region (FGHAZ) is P92 steel is easiest to creep hole occur
The weak location in hole.In view of the symmetry of connector or so heat affected area, in order to simplify measurement, the measurement point of the present embodiment assessment
Position is uniformly set as the heat affected area on the right side of joint samples.The emission mode of ultrasound is set as a longitudinal wave through transmission technique (hair one
Receive), straight beam method head SIUI-5Z6N and SIUI-10Z6N is respectively adopted in transmitting probe 5 and receiving transducer 6.
Two ultrasonic probe transmitting probes 5 and receiving transducer 6 and measured sample are fixed using heavy flat-nose pliers 1, wherein
Two planes of heavy flat-nose pliers 1 and component contact paste upper soft rubber 2, to avoid the hard contact between metal.By plane
Pressure sensor 3 is placed between heavy flat-nose pliers 1 and transmitting probe 5 and receiving transducer 6, wherein in applanation sensor
3 also paste soft rubber 2 with the contact surface of transmitting probe 5 and receiving transducer 6.When measurement, in the connection of applanation sensor 3
Heavy flat-nose pliers 1 can be applied to the pressure on measured workpiece and shown by matched pressure digital display instrument 4.Pass through rotation
The spanner of heavy flat-nose pliers 1, i.e., the contact pressure of adjustable transmitting probe 5 and receiving transducer 6 and measured workpiece.By transmitting probe
5 and the bonding force of receiving transducer 6 and measured workpiece be set as 3kg (29.4N).
Original sample, creep 312h, creep 624h, creep 936h, creep 1248h and fracture sample are carried out respectively non-
Linear ultrasonic assessment, each position measure 3 times, obtain the primary wave amplitude A 1 of sample and the amplitude A 2 of second harmonic, and according to
Formula β=A2/A1 2Sample nonlinear parameter is calculated, is recorded.The nonlinear parameter of the welding point heat affected area of P92 steel with
The increase of creep time and rise, this has reacted the validity of non-linear ultrasonic technology evaluation welding point creep impairment.Meanwhile
It can be seen that the fluctuating range very little of 3 non-linear ultrasonic parameters of each measurement point from the error range of β value, control exists
Within 10%, this shows that the probe clamping device that the present invention designs effectively improves the stability of nonlinear measurement, solves non-
The problem how coupled between ultrasonic probe and Heat Resistant Steel Welded Joints during linearity test.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (6)
1. a kind of probe clamping device and its application, including heavy flat-nose pliers (1), applanation sensor (3), pressure digital display instrument
(4) and examined workpiece, it is characterised in that: the bottom of the heavy type flat-nose pliers (1) is equipped with applanation sensor (3), described flat
Face pressure force snesor (3) is equipped with pressure digital display instrument (4), and the bottom of the applanation sensor (3) is equipped with transmitting probe
(5), the bottom of the transmitting probe (5) is equipped with receiving transducer (6) by examined workpiece.
2. a kind of probe clamping device according to claim 1 and its application, it is characterised in that: the heavy type flat-nose pliers
(1) it is connect respectively with transmitting probe (5), receiving transducer (6) and examined workpiece.
3. a kind of probe clamping device according to claim 1 and its application, it is characterised in that: the applanation sensing
The output end of device (3) is electrically connected by sensor conductor and the input terminal of pressure digital display instrument (4).
4. a kind of probe clamping device according to claim 1 and its application, it is characterised in that: the transmitting probe (5)
Frequency be 5MHz.
5. a kind of probe clamping device according to claim 1 and its application, it is characterised in that: the receiving transducer (6)
Frequency be 10MHz.
6. a kind of probe clamping device according to claim 1 and its application, it is characterised in that: the heavy type flat-nose pliers
(1) in two planes contacted with measured workpiece and the applanation sensor (3) and transmitting probe (5), receiving transducer (6)
Between contact surface on be pasted with soft rubber (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392585.0A CN109270171A (en) | 2018-11-21 | 2018-11-21 | A kind of probe clamping device and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392585.0A CN109270171A (en) | 2018-11-21 | 2018-11-21 | A kind of probe clamping device and its application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109270171A true CN109270171A (en) | 2019-01-25 |
Family
ID=65189655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811392585.0A Pending CN109270171A (en) | 2018-11-21 | 2018-11-21 | A kind of probe clamping device and its application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975419A (en) * | 2019-02-19 | 2019-07-05 | 大唐锅炉压力容器检验中心有限公司 | A kind of clamping device of non-linear ultrasonic detection sample |
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| CN102466597A (en) * | 2010-11-05 | 2012-05-23 | 华东理工大学 | Nondestructive test and evaluation method of metal member / material residual life |
| CN103713052A (en) * | 2014-01-03 | 2014-04-09 | 国家电网公司 | Method for measuring yield strength of Q345 low alloy steel by using nonlinear ultrasonic technique |
| CN103786052A (en) * | 2014-01-15 | 2014-05-14 | 江苏省武进职业教育中心校 | Quick clamping self-locking flat-nose pliers |
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| CN106625305A (en) * | 2017-02-13 | 2017-05-10 | 李志东 | Flat tongs fixture |
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| CN108344805A (en) * | 2018-03-02 | 2018-07-31 | 郑州大学 | A kind of energy converter fixture and workbench applied to non-linear ultrasonic detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440930A (en) * | 1992-01-31 | 1995-08-15 | Elf Atochem S.A. | Ultrasonic measuring assembly and means for attaching same to a vessel |
| CN1865981A (en) * | 2006-05-11 | 2006-11-22 | 西北工业大学 | Ultrasonic frequency spectrum detection method for minute impurity in aluminum alloy |
| CN102466597A (en) * | 2010-11-05 | 2012-05-23 | 华东理工大学 | Nondestructive test and evaluation method of metal member / material residual life |
| CN103713052A (en) * | 2014-01-03 | 2014-04-09 | 国家电网公司 | Method for measuring yield strength of Q345 low alloy steel by using nonlinear ultrasonic technique |
| CN103786052A (en) * | 2014-01-15 | 2014-05-14 | 江苏省武进职业教育中心校 | Quick clamping self-locking flat-nose pliers |
| CN103940910A (en) * | 2014-05-15 | 2014-07-23 | 厦门大学 | Nonlinear ultrasonic heat treatment process evaluation and optimization method and device |
| CN105699495A (en) * | 2016-03-24 | 2016-06-22 | 江苏科技大学 | Portable ultrasonic probe pressure adjusting device and use method |
| CN206057263U (en) * | 2016-09-09 | 2017-03-29 | 安徽理工大学 | A kind of dual-purpose ultrasonic ripple probe gripper |
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| CN108344805A (en) * | 2018-03-02 | 2018-07-31 | 郑州大学 | A kind of energy converter fixture and workbench applied to non-linear ultrasonic detection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109975419A (en) * | 2019-02-19 | 2019-07-05 | 大唐锅炉压力容器检验中心有限公司 | A kind of clamping device of non-linear ultrasonic detection sample |
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Application publication date: 20190125 |