CN105548357A - Method for using ultrasonic wave for quick determination of single crystal material - Google Patents
Method for using ultrasonic wave for quick determination of single crystal material Download PDFInfo
- Publication number
- CN105548357A CN105548357A CN201510962768.1A CN201510962768A CN105548357A CN 105548357 A CN105548357 A CN 105548357A CN 201510962768 A CN201510962768 A CN 201510962768A CN 105548357 A CN105548357 A CN 105548357A
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- sample
- ultrasonic wave
- tested
- bottom echo
- single crystal
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Classifications
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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
Abstract
The present invention discloses a method for using ultrasonic wave for quick determination of a single crystal material, the ultrasonic wave passes through a sample to be tested, a bottom echo after the ultrasonic wave passes through the sample is collected, the waveform of the bottom echo is displayed by a display screen, and if a noise wave smaller than the bottom echo appears before the bottom echo in the displayed waveform, the sample to be tested is determined to be a non-monocrystalline material; otherwise the sample to be tested is determined to be a single crystal material. According to the method, the ultrasonic wave passes through the sample to be tested, by observing a reflected waveform of the ultrasonic wave, whether the material is a single crystal material can be determined, and the method can significantly improve the efficiency of product on-site testing, and is an economical applicable method for detecting. The method is simple, quick, economical, applicable, and high in detection efficiency.
Description
Technical field
The present invention relates to detection technique field, especially a kind of method adopting ultrasound wave fast to measure monocrystal material.
Background technology
At current ordnance engine
bladeand civilian high-end gas turbine
blade,because they need to keep normal operation at high temperature under high pressure, therefore usually all require that they form a single crystal in foundry production, namely monocrystal, it does not have crystal boundary, thus avoid that crystal boundary is at high temperature easily softening causes the hot strength of material to decline, cause the generation of fatigue crack and then greatly reduce its serviceable life.
Therefore blade out is directly cast on a production line, if casting technique and Composition Control are not tight, cause product in crystallization process, occur defective tissue, namely not a monocrystal, there is again the gathering of some impurity element in crystal boundary simultaneously, such blade is exactly underproof product, must be identified quickly.The rapid and convenient of the product occurring serious quality problems is investigated.
Usually identify whether blade is that monocrystal generally all adopts X-ray diffraction method, but the equipment that this method uses costly, and program is more complicated also, require also higher to the professional technique of testing staff, detection efficiency is also very low simultaneously, in through engineering approaches application, be subject to certain restriction.
Summary of the invention
The object of the invention is: provide a kind of method adopting ultrasound wave fast to measure monocrystal material, it can judge material fast and accurately whether as monocrystal material, significantly improves on-the-spot Product checking efficiency, and with low cost.
The present invention is achieved in that the method adopting ultrasound wave fast to measure monocrystal material, ultrasound wave is utilized to pass sample to be tested, gather the Bottom echo after through sample again, by the waveform of display screen display Bottom echo, if the clutter less than Bottom echo appears in the waveform of display before Bottom echo, then determine that sample to be tested is non-single-crystal material; Otherwise then determine that sample to be tested is monocrystal material.
Principle of the present invention: the workpiece of monocrystal material is only made up of a crystal grain, therefore do not reflect when ultrasound wave is propagated therein, but if not monocrystalline, crystal boundary will be there is between crystal grain and crystal grain, Grain-Boundary Phase is exactly a kind of interface for crystal grain, so will there is reflection to a certain degree when ultrasonic propagation runs into crystal boundary.
The process that ultrasound wave is propagated from the side of workpiece to opposite side, if inside does not have interface, any reflection can not be there is in ultrasound wave in inside, ultrasound wave display screen only there will be Bottom echo, if inside workpiece has interface, ultrasound wave will reflect on these interfaces, on a display screen, shows as and had the appearance of some less clutters before end ripple.
During detection, if there is not any echo before end ripple, illustrate that inside workpiece does not have interface, then this workpiece is monocrystal material, if but occurred echo before end ripple, then inside workpiece has interface, illustrates that this workpiece is not monocrystal material.
Owing to have employed technique scheme, compared with prior art, the present invention adopts ultrasound wave to pass product to be measured, by observing hyperacoustic reflection configuration, can judge whether material is monocrystal material, to detect the serious grain boundary defects existed in material, so just can significantly improve on-the-spot Product checking efficiency, be a kind of economic and practical detection method.Simple and fast of the present invention, economic and practical, detection efficiency is high.
Accompanying drawing explanation
Accompanying drawing 1 detects the ultrasonic echo waveform schematic diagram of monocrystal material for the present invention;
Accompanying drawing 2 detects the ultrasonic echo waveform schematic diagram of non-single-crystal material for the present invention.
Embodiment
Embodiments of the invention: adopt ultrasound wave fast to measure the method for monocrystal material, ultrasound wave is utilized to pass sample to be tested, gather the Bottom echo after through sample again, by the waveform of display screen display Bottom echo, if the clutter less than Bottom echo appears in the waveform of display before Bottom echo, then determine that sample to be tested is non-single-crystal material; Otherwise then determine that sample to be tested is monocrystal material.
Applicant, in order to verify technique effect of the present invention, from Guizhou Si Laikema company, but has extracted 100 untested aircraft engine blades produced, and adopts method of the present invention to detect these 100 samples, and records testing result; X-ray diffraction method is adopted to detect in these 100 samples afterwards, and record testing result, the testing result of two kinds of methods contrasts, for the conclusion whether product is monocrystal material, its test result is completely the same, and the time adopting the solution of the present invention used is only 8 hours, and the time adopting the method for prior art to detect is 50 hours.
Claims (1)
1. the method adopting ultrasound wave fast to measure monocrystal material, it is characterized in that: utilize ultrasound wave to pass sample to be tested, gather the Bottom echo after through sample again, by the waveform of display screen display Bottom echo, if the clutter less than Bottom echo appears in the waveform of display before Bottom echo, then determine that sample to be tested is non-single-crystal material; Otherwise then determine that sample to be tested is monocrystal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510962768.1A CN105548357A (en) | 2015-12-21 | 2015-12-21 | Method for using ultrasonic wave for quick determination of single crystal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510962768.1A CN105548357A (en) | 2015-12-21 | 2015-12-21 | Method for using ultrasonic wave for quick determination of single crystal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105548357A true CN105548357A (en) | 2016-05-04 |
Family
ID=55827690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510962768.1A Pending CN105548357A (en) | 2015-12-21 | 2015-12-21 | Method for using ultrasonic wave for quick determination of single crystal material |
Country Status (1)
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| CN (1) | CN105548357A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955405A (en) * | 1973-12-07 | 1976-05-11 | Automation Industries, Inc. | Ultrasonic NDT system with flashing display alarm |
| JPS58154654A (en) * | 1982-03-10 | 1983-09-14 | Toshiba Corp | Method for ultrasonic flaw detection |
| CN87100213A (en) * | 1987-01-19 | 1988-08-31 | 同济大学 | Check lithium niobate or monocrystalline lithium tantalate method for quality |
| 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 |
-
2015
- 2015-12-21 CN CN201510962768.1A patent/CN105548357A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955405A (en) * | 1973-12-07 | 1976-05-11 | Automation Industries, Inc. | Ultrasonic NDT system with flashing display alarm |
| JPS58154654A (en) * | 1982-03-10 | 1983-09-14 | Toshiba Corp | Method for ultrasonic flaw detection |
| CN87100213A (en) * | 1987-01-19 | 1988-08-31 | 同济大学 | Check lithium niobate or monocrystalline lithium tantalate method for quality |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 姚培元等: "《无损检测技术》", 31 December 1983, 南昌航空工业学院印刷厂 * |
| 梁森 等: "《自动检测与转换技术》", 31 January 2013, 机械工业出版社 * |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |
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| RJ01 | Rejection of invention patent application after publication |