CN103995058B - Rapid coupling agent for eliminating end surface roughness influence and improving testing effect of vertical and horizontal waves - Google Patents
Rapid coupling agent for eliminating end surface roughness influence and improving testing effect of vertical and horizontal waves Download PDFInfo
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- CN103995058B CN103995058B CN201410240406.7A CN201410240406A CN103995058B CN 103995058 B CN103995058 B CN 103995058B CN 201410240406 A CN201410240406 A CN 201410240406A CN 103995058 B CN103995058 B CN 103995058B
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- coupling agent
- couplant
- gypsum fibrosum
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Abstract
The invention discloses a rapid coupling agent for eliminating end surface roughness influence and improving testing effects of vertical and horizontal waves. The coupling agent is prepared into a powder material from materials such as gypsum, calcined gypsum, polyvinyl alcohol, white emulsion, potassium sulfate, sodium chloride, calcium oxide and magnesium chloride according to certain procedures, the powder material is stored in a sealing bag for later use, when being used, the powder material is mixed with water, the surface of a tested article is coated with the sufficiently mixed powder material, and an ultrasonic probe is also mounted for ultrasonic testing. The coupling agent is in a flowing molding state in an ultrasonic testing pretreatment procedure, a gap between the probe and the end surface of the tested article can be sufficiently filled, and the influence on the ultrasonic testing caused by the roughness of the end surface is eliminated. In ultrasonic wave testing, the coupling agent is in a hard molding state and has appropriate adhesion strength, so that the ultrasonic probe can be integrally adhered to the tested article, and then a relatively good vertical and horizontal wave testing effect can be obtained. In addition, the reaction mass of the materials can be calculated through chemical reaction equations, the coupling agent can be approximately neutral, and the corrosion of the tested article to the probe is alleviated.
Description
Technical field
The present invention relates to the ultrasonic testing such as the detection of rock, concrete, steel construction and flaw detection field, particularly to one kind
Eliminate surface roughness impact and improve the couplant of vertical transverse wave testing effect.
Background technology
Ultrasonic listening technology, as one of the main exploration method of geophysical exploration, is widely used in rock rock mass work
Cheng Xingzhi differentiates, integrity judges, coalfield and oil field prospecting etc. etc. field.Ultrasonic listening technology is also widely used in simultaneously
The industries such as work China Democratic National Construction Association, such as concrete, the Non-Destructive Testing of the material such as steel construction.But ultrasound wave can not penetrate ultrasound probe with
Air between testee, so must couple protection through row between transducer and testee.At present, the use of couplant
Lack specification, multiple different couplants are used for producing, in the middle of scientific research；Because the coupling effect of couplant is different, reduce
The reliability of test result, is also unfavorable for test result relative analyses under the conditions of same material difference couplant simultaneously.
At present, couplant great majority are liquid, such as machine oil, vaseline；Less, the such as aluminium foil of solid-state.These liquid
Although the couplant of state can pass through compressional wave, shear wave can not be passed through；And coupling under low-stress for the couplant of solid-state
Close tightness degree very poor.In addition, sonic test higher to testee end face flatness requirement it is impossible to be widely used in not
Test with surface roughness.With the intensification of current ultrasound wave theory and practice application, ripple integral probe is gradually general in length and breadth
Time, to can indulge simultaneously transverse wave testing and be applied to different surface roughness couplant urgent all the more.
Content of the invention
For the test error overcoming prior art to bring because of the selection of couplant, and also to simplifying experiment and reducing real
Test requirement, it is an object of the invention to provide a kind of coupling eliminating surface roughness impact and improving vertical transverse wave testing effect
Agent, can test simultaneously in length and breadth ripple, be applied to different roughness end face, nontoxic ultrasonic testing.
For reaching above-mentioned purpose, the technical scheme is that
A kind of quick coupling agent eliminating surface roughness impact and improving vertical transverse wave testing effect, comprising:
Consolidating agent: Gypsum Fibrosum preparata caso4·0.5h2O,
Consolidation strength regulator: Gypsum Fibrosum caso4·2h2O,
Lubricant and early strength agent: white glue with vinyl, polyvinyl alcohol,
Consolidation time regulator: sulphuric acid kalium2so4With the mixed dust formulation of sodium chloride nacl,
The mixed dust formulation that it is also possible to use magnesium chloride mgcl and calcium oxide cao in severe cold region heats additive.
Described couplant makes point three steps: the first step, with Gypsum Fibrosum: poly-vinyl alcohol solution: white glue with vinyl: boiling water=50:
The mass ratio of 15:5:15 stirs, and then dries 1 hour in baking oven between 140 °～170 ° of temperature, heat treatment shape
Become Gypsum Fibrosum preparata hybrid solid；Second step, adds consolidation time regulator: potassium sulfate, sodium chloride and consolidation strength regulator: calculogenesis
Cream, by Gypsum Fibrosum preparata mixture: Gypsum Fibrosum: sodium chloride: the mass ratio of potassium sulfate=20:2:1:1 uniformly mixes, and obtains quick coupling
Agent；3rd step, under particular demands, adds heating agent, obtains cold-resistant couplant.
Further, choose couplant, by couplant: magnesium chloride: the mass ratio of calcium oxide=150:20:13 uniformly mixes
Close, obtain cold-resistant couplant.
Further, in described couplant, all ground 0.075mm sieve before all solids mixing, gained couplant seals
Stand-by in hermetic bag, mix and can use with warm water 0.8:1～1:1 in mass ratio when using.
It is an advantage of the current invention that having preferable plasticity before the semi-consolidated time, between energy dense packing effect coupling surface
Space, smooths end face coarse.Applying this couplant can reduce process to sample end face, thus reducing sample preparation cost, being also suitable
In field in-situ test roughened end surface situation, comparing result is shown in Fig. 2.After ultrasound probe is installed, couplant is gradually by soft
Plastic state is changed into solid-state, and transducer is sticked to one by the adhesion strength with appropriateness with testee, can save special acoustical testing
When probe fixing device.After reaching consolidation time, couplant is in hard plastic state, can preferably pass through ripple in length and breadth, comparing result
See Fig. 3, Fig. 4, Fig. 5.The present invention adds consolidation strength regulator according to practical situation, prevents probe consolidation too strong, is not easy to
The occurrence of measured object is detached.The present invention adjusts the semi-consolidated time by adding consolidation time regulator, can meet
The requirement of double consolidation time of actual test: during indoor rock sample ultrasonic testing, shorter needed for test pretreatment time, need to use
The testing time saved by shorter couplant of semi-consolidated time.The present invention is accompanied by heating powder, can deal with the vile weathers such as severe cold
Impact to experiment.
Brief description
Fig. 1 is the sonic test schematic diagram of the present invention；
Fig. 2 is loose sand end face contrast after couplant before processing of the present invention；
Fig. 3 standard aluminum sample (φ 50 × 100) vaseline and couplant coupling effect contrast of the present invention；
Fig. 4 standard fine sand rock sample (φ 50 × 100) vaseline and couplant coupling measurement Contrast on effect of the present invention；
Fig. 5 standard granite sandstone (φ 50 × 100) vaseline and couplant coupling measurement Contrast on effect of the present invention.
Specific embodiment
Specific embodiment is described in further details to technical solution of the present invention below in conjunction with the accompanying drawings:
A kind of quick coupling agent eliminating surface roughness impact and improving vertical transverse wave testing effect, comprising:
Consolidating agent: Gypsum Fibrosum preparata caso4·0.5h2O,
Consolidation strength regulator: Gypsum Fibrosum caso4·2h2O,
Lubricant and early strength agent: white glue with vinyl, polyvinyl alcohol,
Consolidation time regulator: sulphuric acid kalium2so4With the mixed dust formulation of sodium chloride nacl,
The mixed dust formulation that it is also possible to use magnesium chloride mgcl and calcium oxide cao in severe cold region heats additive.
Described couplant makes point three steps: the first step, with Gypsum Fibrosum: poly-vinyl alcohol solution: white glue with vinyl: boiling water=50:
The mass ratio of 15:5:15 stirs, and then dries 1 hour in baking oven between 140 °～170 ° of temperature, heat treatment shape
Become Gypsum Fibrosum preparata hybrid solid；Second step, adds consolidation time regulator: potassium sulfate, sodium chloride and consolidation strength regulator: calculogenesis
Cream, by Gypsum Fibrosum preparata mixture: Gypsum Fibrosum: sodium chloride: the mass ratio of potassium sulfate=20:2:1:1 uniformly mixes, and obtains quick coupling
Agent；3rd step, under particular demands, adds heating agent, obtains cold-resistant couplant.
Further, choose couplant, by couplant: magnesium chloride: the mass ratio of calcium oxide=150:20:13 uniformly mixes
Close, obtain cold-resistant couplant.
Further, in described couplant, all ground 0.075mm sieve before all solids mixing, gained couplant seals
Stand-by in hermetic bag, mix and can use with warm water 0.8:1～1:1 in mass ratio when using.
Embodiment 1, a kind of quick coupling agent eliminating surface roughness impact and improving vertical transverse wave testing effect, comprising:
Consolidating agent: Gypsum Fibrosum preparata caso4·0.5h2O,
Consolidation strength regulator: Gypsum Fibrosum caso4·2h2O,
Lubricant and early strength agent: white glue with vinyl, polyvinyl alcohol,
Consolidation time regulator: sulphuric acid kalium2so4With the mixed dust formulation of sodium chloride nacl,
The mixed dust formulation that it is also possible to use magnesium chloride mgcl and calcium oxide cao in severe cold region heats additive.
Its making step is: boiling water, 8% polyvinyl alcohol sol and white glue with vinyl are mixed simultaneously by (1) in the ratio of 20:14:1
It is sufficiently stirred for forming high temperature dilution poly-vinyl alcohol solution.
(2) gypsum powder of 0.075mm sieve and the ratio mixing of synthesizing high temperature sol 3:2 in mass ratio will be crossed, formed thick
Spend higher starchiness mix reagent.
(3) put into after above-mentioned mix reagent being sufficiently stirred in baking oven, oven temperature controls between 140 °～170 °, warp
It's 1 hour the pasting heat treatment dehydration, makes Gypsum Fibrosum (caso4·2h2O) mix reagent becomes Gypsum Fibrosum preparata (caso4·0.5h2O) mix
Solid.Above-mentioned Gypsum Fibrosum preparata hybrid solid is ground 0.075mm sieve and forms Gypsum Fibrosum preparata mixed-powder, then press Gypsum Fibrosum preparata mixture:
Gypsum Fibrosum=10:1 uniformly mixes.
(4) sodium chloride powder, potassium sulfate powder, Gypsum Fibrosum powder and step (3) products therefrom of 0.075mm sieve will be crossed,
1:1:2:20 uniformly mixes in mass ratio, forms quick coupling agent, and is stored in stand-by in hermetic bag.
(5), when using, water is mixed with couplant 0.8:1～1:1 in mass ratio and is sufficiently stirred for forming starchiness ultrasound wave
Couplant；Rapidly the couplant preparing is applied in testee end face and then transducer is installed and applies the slightly pressure several seconds,
Exceed after consolidation time as shown in figure 1, carrying out ultrasonic measurement after consolidation.If under severe cold condition, for ensureing test effect,
The magnesium chloride of 5% 20:13 can be added: calcium oxide mixed-powder improves water temperature.This couplant performance parameter is shown in Table 1.
Table 1 couplant performance parameter
Note: probe set time and consolidation time are to start timing after probe is installed.
The technical scheme being adopted of the present invention and mentality of designing are: this consolidation couplant meet water after formed thick,
Interacted with Van der Waals force between granule.And because polyvinyl alcohol and white glue have lubrication, in this stage couplant
There is larger stream plasticity.The present invention accounts for the time of the end of mastery reaction power for half with Van der Waals force between this definitions particles
Consolidation time.Before the semi-consolidated time, couplant stream plasticity is good, can carry out the couplant of testee end face before sonic test
Smear and fix with the installation of ultrasound probe.According to demand, present invention potassium sulfate and chlorine to the different semi-consolidated times for the test
Change sodium mixed dust formulation to shorten the semi-consolidated time, after ultrasound probe coupling is installed and fixed, Gypsum Fibrosum absorbs water, and aquation nucleus is big
Contact with each other between amount growth, crystal connection, and forming crystalline texture net is in solid-state.With the intensification of the state of cure of couplant,
Ultrasonic wave-coupled effect also improves, and until solidification reaches to a certain degree, coupling effect is not further added by, and the present invention defines this time and is
Consolidation time.So that it may carry out ultrasonic testing after consolidation time.For preventing consolidation strength too big, it is unfavorable for probe and quilt
Survey the separation of object, make consolidation strength regulator using gesso.In order to can be suitably used for the adverse circumstances such as field severe cold, this
Bright heating agent is done with magnesium chloride and calcium oxide.
It is an advantage of the current invention that having preferable plasticity before the semi-consolidated time, between energy dense packing effect coupling surface
Space, smooths end face coarse.Applying this couplant can reduce process to sample end face, thus reducing sample preparation cost, being also suitable
In field in-situ test roughened end surface situation, comparing result is shown in Fig. 2.After ultrasound probe is installed, couplant is gradually by soft
Plastic state is changed into solid-state, and transducer is sticked to one by the adhesion strength with appropriateness with testee, can save special acoustical testing
When probe fixing device.After reaching consolidation time, couplant is in hard plastic state, can preferably pass through ripple in length and breadth, comparing result
See Fig. 3, Fig. 4, Fig. 5.The present invention adds consolidation strength regulator according to practical situation, prevents probe consolidation too strong, is not easy to
The occurrence of measured object is detached.The present invention adjusts the semi-consolidated time by adding consolidation time regulator, can meet
The requirement of double consolidation time of actual test: during indoor rock sample ultrasonic testing, shorter needed for test pretreatment time, need to use
The testing time saved by shorter couplant of semi-consolidated time.The present invention is accompanied by heating powder, can deal with the vile weathers such as severe cold
Impact to experiment.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
The change or replacement expected without creative work, all should be included within the scope of the present invention.Therefore, the present invention
Protection domain should be defined by the protection domain that claims are limited.
Claims (1)
1. a kind of surface roughness that eliminates affects and improves the quick coupling agent of vertical transverse wave testing effect it is characterised in that including:
Consolidating agent: Gypsum Fibrosum preparata caso4·0.5h2O,
Consolidation strength regulator: Gypsum Fibrosum caso4·2h2O,
Lubricant and early strength agent: white glue with vinyl, polyvinyl alcohol,
Consolidation time regulator: sulphuric acid kalium2so4With the mixed dust formulation of sodium chloride nacl,
Also heat additive in severe cold region using the mixed dust formulation of magnesium chloride mgcl and calcium oxide cao；
Described couplant makes point three steps: the first step, with Gypsum Fibrosum: poly-vinyl alcohol solution: white glue with vinyl: boiling water=50:15:5:
15 mass ratio stirs, and then dries 1 hour in baking oven between 140 °～170 ° of temperature, heat treatment forms ripe stone
Cream hybrid solid；Second step, adds consolidation time regulator: potassium sulfate, sodium chloride and consolidation strength regulator: Gypsum Fibrosum, presses
Gypsum Fibrosum preparata mixture: Gypsum Fibrosum: sodium chloride: the mass ratio of potassium sulfate=20:2:1:1 uniformly mixes, obtains quick coupling agent；The
Three steps, choose couplant, by couplant: magnesium chloride: the mass ratio of calcium oxide=150:20:13 uniformly mixes, obtain cold-resistant coupling
Mixture；
All ground 0.075mm sieve before all solids mixing, gained couplant is sealed in stand-by in hermetic bag, when using with temperature
Water 0.8:1～1:1 in mass ratio mixing can use.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410240406.7A CN103995058B (en) | 2014-05-30 | 2014-05-30 | Rapid coupling agent for eliminating end surface roughness influence and improving testing effect of vertical and horizontal waves |
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| CN201410240406.7A CN103995058B (en) | 2014-05-30 | 2014-05-30 | Rapid coupling agent for eliminating end surface roughness influence and improving testing effect of vertical and horizontal waves |
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| CN103995058B true CN103995058B (en) | 2017-01-18 |
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| CN105423968A (en) * | 2015-10-28 | 2016-03-23 | 湘潭宏远电子科技有限公司 | Transverse wave couplant for power station boiler steel pipe inner wall oxide-film high frequency ultrasonic measurement, and preparation method thereof |
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| FR2627978B1 (en) * | 1988-03-04 | 1997-06-13 | Cessot Christian | DEVICE FOR REPRODUCING BONE RELIEF BY THREE-DIMENSIONAL ULTRASONIC ECHOGRAPHY |
| CN1062518A (en) * | 1992-01-25 | 1992-07-08 | 江苏省公安厅刑事科学技术研究所 | Method for making model with high-strength gypsum |
| CN1924571B (en) * | 2006-09-21 | 2010-06-02 | 浙江建设职业技术学院 | Ultrasonic determination method of light-weight soil wave speed characteristic value |
| CN101734897A (en) * | 2008-11-10 | 2010-06-16 | 河南省翔宇建材科技有限公司 | Formula of gypsum binder |
| CN102060492A (en) * | 2009-11-14 | 2011-05-18 | 孔敏 | High-strength waterproof gypsum product |
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| CB03 | Change of inventor or designer information |
Inventor after: Liu Yafeng Inventor after: Liu Gao Inventor after: Zhao Dong Inventor after: Huang Lvwei Inventor before: Qiao Yongjin Inventor before: Lu Fengying |
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Effective date of registration: 20160627 Address after: 730050 No. 23 West Construction Road, Qilihe District, Gansu, Lanzhou Applicant after: Co., Ltd of Chinese energy construction group Gansu Prov. Electric Power Design Inst. Applicant after: Lanzhou University Address before: 730000 Tianshui South Road, Gansu, Lanzhou, No. 222 Applicant before: Lanzhou University |
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