CN107764443B - Portable ultrasonic residual stress detector - Google Patents
Portable ultrasonic residual stress detector Download PDFInfo
- Publication number
- CN107764443B CN107764443B CN201710855224.4A CN201710855224A CN107764443B CN 107764443 B CN107764443 B CN 107764443B CN 201710855224 A CN201710855224 A CN 201710855224A CN 107764443 B CN107764443 B CN 107764443B
- Authority
- CN
- China
- Prior art keywords
- residual stress
- wedge block
- acoustic wedge
- universal joint
- boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model provides a portable supersound residual stress detector, the detector includes from the base (14) of supreme vertical setting down, set up shell (7) and the mechanism of exerting pressure on the base, the mechanism of exerting pressure includes that one end is vertical to be set up exert pressure pole (1) in the shell and locate it is ascending adjusting part to exert pressure pole (1) radially. The distance from the lower surface of the nut to the upper surface of the top cover is adjusted to be used as the effective distance of the handle pressing spring, so that the same pressing force on the sound wedge block in each testing process is ensured, and the obtained testing result is stable. When the surface to be tested is a non-ideal plane, the bottom of the acoustic wedge block can be effectively attached to the test surface, the residual stress test error is reduced, the test precision of the ultrasonic residual stress tester on the residual stress of the metal is improved, and the operation method provided by the invention is simple and convenient.
Description
Technical Field
The invention relates to a tool clamp for measuring residual stress of a metal surface, in particular to an ultrasonic residual stress detector.
Background
The detection of the metal residual stress is widely concerned due to the influence of the metal residual stress on the metal processing deformation and the safe service.
The ultrasonic residual stress detection technology is a novel nondestructive residual stress detection technology, and the difference of the residual stress of the surface and the interior of a component is reflected by the difference of the propagation speed of ultrasonic waves on the surface and the interior of a metal. The method comprises the step of smearing a coupling agent on the contact part of the bottom of the acoustic wedge block and metal so as to ensure that the bottom of the acoustic wedge block is highly coupled with the metal surface, so that sound waves emitted by an ultrasonic probe are smoothly transmitted to the surface of a piece to be detected through the bottom of the acoustic wedge block and then absorb ultrasonic signals.
In order to ensure high coupling, a couplant is smeared on a contact part of the bottom of an acoustic wedge block and metal, and then the acoustic wedge block is vertically pressed.
Therefore, in order to ensure the stability of the residual stress test result, it is necessary to provide a tooling device which is convenient for quantitative pressure application and ensures good contact between the bottom of the acoustic wedge block and the test surface.
Disclosure of Invention
For satisfying prior art's defect, provide a portable handheld anchor clamps, the same pressure is applyed to the sound wedge piece to the residual stress test procedure at every turn to guarantee sound wedge piece bottom and test surface good contact, thereby solve the inconvenience and the poor problem of repeatability that the both hands directly pressed the sound wedge piece and carry out the test.
The invention is realized by the following technical scheme.
The utility model provides a portable supersound residual stress detector, the detector includes from the base (14) of supreme vertical setting down, set up shell (7) and the mechanism of exerting pressure on the base, the mechanism of exerting pressure includes that one end is vertical to be set up exert pressure pole (1) in the shell and locate it is ascending adjusting part to exert pressure pole (1) radially.
Preferably, the upper and lower sliding blocks are arranged on the same axis in the shell, and the spring (8) is arranged between the upper and lower sliding blocks; the lower end of the lower sliding block (9) is coaxially and sequentially provided with a universal joint seat with a groove at the lower end and a universal joint ball head (11) with one end matched with the groove; the upper end of the upper sliding block (6) is provided with a groove matched with the pressure applying rod (1); the lower end of the lower sliding block is provided with a groove matched with the upper end of the universal joint seat.
Preferably, the upper end and the lower end of the shell (7) are respectively provided with an extension boss; the extension bosses are respectively provided with through holes vertical to the boss table surface, and the upper side of the upper extension boss is provided with a top cover (5) fixed by a first fixing piece (4); the center of the top cover is provided with a through hole through which the pressure applying rod (1) is communicated; the distance between the top cover (5) and the second adjusting part (3) below the adjusting component is greater than zero; the lower extension boss and the base are fixed through a second fixing piece (12).
Preferably, the base (14) comprises a cross-shaped fixed seat frame (13) and a boss-shaped acoustic wedge block (16), which are vertically arranged from top to bottom and are arranged coaxially with the universal joint ball head (11) and have cross-shaped sections; the upper end of the cross-shaped protruding part is embedded into a groove at the lower end of the universal joint ball head (11); a groove embedded with a third fixing piece (17) is arranged in the protruding part at the lower end of the cross; the cross-shaped horizontal protruding part is arranged at the upper end of the boss-shaped acoustic wedge block (16); grooves which are provided with ultrasonic probes (15) and form an angle of 30-45 degrees with the vertical direction are respectively arranged on the inclined planes at the two sides of the acoustic wedge block (16); and a circular through hole is formed in the upper surface of the base corresponding to the axial direction of the ultrasonic probe (15).
Preferably, the pressure applying rod (1) is made of the following component materials in percentage by mass: 25.5 to 27.0 percent of Cr, 14.5 to 16.0 percent of Co, 3.0 to 3.5 percent of Mo, 0.5 to 0.8 percent of Ti, and the balance of Fe.
Preferably, the first adjusting piece and the second adjusting piece are nuts; the first fixing piece and the second fixing piece are socket head cap screws; and the third fixing piece is a flat head screw.
The first adjusting piece and the second adjusting piece are made of the following component materials in percentage by mass: c: 3.6-3.9%, Si: 2.5-2.8%, Mn: 0.5 to 0.7%, Ni: 0.9 to 1.5, Bi: 0.08-0.1%, S: < 0.025%, P: less than 0.05 percent and the balance of Fe.
Compared with the closest prior art, the technical scheme provided by the invention has the following excellent effects:
according to the technical scheme provided by the invention, the distance between the lower surface of the nut and the upper surface of the top cover is adjusted to be used as the effective distance for the handle to press the spring downwards, and the distance is determined to ensure that the downward pressure of the sound wedge block is constant and the same in each testing process, so that the detection result is stable.
According to the technical scheme, the thickness of the coupling agent film layer coated between the bottom of the acoustic wedge block and the surface to be tested is the same, so that the universal joint ball head can rotate in the universal joint seat under the action of the spring pressure of the pressing handle, the effective fit between the bottom of the acoustic wedge block and the testing surface when the surface to be tested is a non-ideal plane is realized, the residual stress testing error is greatly reduced, and the testing precision of the ultrasonic residual stress tester on the metal residual stress is improved.
The operation method provided by the invention is simple, and the test accuracy and the portability of the ultrasonic residual stress tester can be ensured.
Description of the drawings:
FIG. 1 is a schematic diagram of a portable ultrasonic residual stress detector;
FIG. 2 is a schematic diagram of the internal structure of the portable ultrasonic residual stress detector;
FIG. 3 is a top view of the portable ultrasonic residual stress detector;
FIG. 4 is a schematic cross-sectional view of a portable ultrasonic residual stress detector A-A;
FIG. 5 is a schematic view of the working state of the portable ultrasonic residual stress detector;
fig. 6 is a free state diagram of the portable ultrasonic residual stress detector.
In the figure, 1 is a pressure applying rod; 2 is a regulating part I; 3 is a second adjusting part; 4 is a first fixing part; 5 is a top cover; 6 is an upper slide block; 7 is a shell; 8 is a spring; 9 is a lower sliding block; 10 is a universal joint seat; 11 is a universal joint ball head; 12 is a second fixing part; 13 is a fixing frame; 14 is a base; 15 is an ultrasonic probe; 16 is an acoustic wedge; 17 is a fixing part III; 18 sample to be tested.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention, but the present invention is not limited to these examples.
Fig. 1 is a schematic diagram of a portable ultrasonic residual stress detector provided by the invention. According to the functional division, the invention is composed of two parts, namely a constant pressure applying part and an adaptive contact part.
Fig. 2 is a cross-sectional view of the portable ultrasonic residual stress detector provided by the invention.
The constant pressure applying part comprises a pressure applying rod 1, a first adjusting piece 2, a second adjusting piece 3, an upper sliding block 6, a spring 8, a lower sliding block 9, a universal joint seat 10, a universal joint ball 11 and the like. The adjusting part I2, the adjusting part II 3 and the bolt on the pressure applying rod 1 form a thread pair, the bottom of the pressure applying rod 1 is in threaded connection with the upper sliding block 6, the upper sliding block 6 and the lower sliding block 9 are placed in the shell 7, the spring 8 is placed between the upper sliding block 6 and the lower sliding block 9, the pressure applying rod 1 slides downwards to drive the upper sliding block 6 to move downwards in the shell 7, so that the spring 8 is compressed, the lower sliding block 9 is connected with the universal joint seat 10, the downward force generated by the compression of the spring is applied to the universal joint seat 10, the universal joint ball head 11 and the universal joint seat 10 form a universal joint, and the universal joint ball head 11 can freely move in the universal joint seat 10.
The adaptive contact portion includes a fixed seat 13, an acoustic wedge 16, a fixed member III 17, and the like. The upper end of the fixing frame 13 is in threaded connection with the lower end of the universal joint ball head 11, and the lower end of the fixing frame passes through a through hole in the middle of the acoustic wedge block 16 and is connected and fixed by a third fixing piece 17. Under the action of the pressure of the universal joint seat 10, the bottom of the acoustic wedge block 16 can be matched with a plane to be tested in a self-adaptive mode, the bottom of the acoustic wedge block 16 can be effectively attached to the test surface in a non-ideal plane, and the ultrasonic probe 15 is arranged on the acoustic wedge block 16 in an upward inclined mode.
Fig. 3 is a top view of the portable ultrasonic residual stress detector.
Fig. 4 is a schematic cross-sectional view of a portable ultrasonic residual stress detector A-A.
Fig. 5 is a schematic diagram showing the working state of the portable ultrasonic residual stress detector. Firstly, adjusting the second adjusting piece 3, determining the distance from the lower surface of the second adjusting piece 3 to the upper surface of the top cover 5, wherein the distance is the effective distance for the pressure applying rod 1 to press the spring 8, and reversely screwing the first adjusting piece 2 to fix the distance. Then, a couplant is smeared at the bottom of the acoustic wedge block 16, the shell 7 is held by a hand, the acoustic wedge block is placed on the surface of a sample 18 to be tested, the base 14 is contacted with the surface to be tested, the lower surface of the second adjusting piece 3 is contacted with the upper surface of the top cover 5 by pressing the pressure applying rod 1 downwards, the universal joint ball 11 rotates in the universal joint seat 10 under the pressure action of the spring 8, the bottom of the acoustic wedge block 16 is self-adaptive to a plane to be tested, and the bottom of the acoustic wedge block 16 can be effectively attached to the test surface when the surface to be tested. Then the pressure applying rod 1 is loosened, the spring 8 rebounds, the acoustic wedge block 16 is unloaded, the change of the distance between the two ultrasonic probes 15 caused by the deformation of the acoustic wedge block 16 under the action of pressure is avoided, at the moment, the two ultrasonic probes 15 transmit and receive ultrasonic signals, the change of the transmission speed of the ultrasonic waves is realized through the residual stress, and then the residual stress of the surface of the structure to be tested is obtained through solution.
Fig. 6 is a free state diagram of the portable ultrasonic residual stress detector. After the residual stress test is finished, the shell 7 is taken up, the bottom of the acoustic wedge block 16 is separated from the surface to be tested, and the ultrasonic residual stress test device is restored to a free state to prepare for carrying out ultrasonic residual stress test on the surface to be tested next time.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the specific embodiments of the present invention can be modified or substituted with equivalents with reference to the above embodiments, and any modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims to be appended.
Claims (3)
1. A portable ultrasonic residual stress detector comprises a base (14) vertically arranged from bottom to top, a shell (7) arranged on the base and a pressure mechanism, and is characterized in that,
an upper sliding block and a lower sliding block and a spring (8) arranged between the upper sliding block and the lower sliding block are arranged on the same axis in the shell; the lower end of the lower sliding block (9) is coaxially and sequentially provided with a universal joint seat with a groove at the lower end and a universal joint ball head (11) with one end matched with the groove;
the upper end and the lower end of the shell (7) are respectively provided with an extension boss; the extension bosses are respectively provided with through holes vertical to the boss table surface; a top cover (5) fixed by a fixing piece I (4) is arranged on the upper side of the upper extension boss;
the pressure applying mechanism comprises a pressure applying rod (1) with one end vertically arranged in the shell and an adjusting component arranged on the radial direction of the pressure applying rod (1); the adjusting component comprises a first adjusting piece (2) and a second adjusting piece (3); the base (14) comprises a fixing frame (13) and a boss-shaped acoustic wedge block (16), wherein the fixing frame (13) and the boss-shaped acoustic wedge block are vertically arranged from top to bottom and are coaxial with the universal joint ball head (11) and the cross section of the fixing frame is cross-shaped; the upper end of the cross-shaped protruding part is embedded into a groove at the lower end of the universal joint ball head (11); a groove embedded with a second fixing piece (17) is arranged in the protruding part at the lower end of the cross; the cross-shaped horizontal protruding part is arranged at the upper end of the boss-shaped acoustic wedge block (16); grooves which are provided with ultrasonic probes (15) and form an angle of 30-45 degrees with the vertical direction are respectively arranged on the inclined planes at the two sides of the acoustic wedge block (16); a circular through hole is formed in the upper surface of the base, which corresponds to the axial direction of the ultrasonic probe (15); the distance between the lower surface of the second adjusting part (3) and the upper surface of the top cover is used as the effective distance of the pressing spring (8), so that the constant pressure of the acoustic wedge block is ensured to be the same every time, and the thickness of a coupling agent film coated at the bottom of the acoustic wedge block (16) and the thickness of the surface to be measured are ensured to be the same; when the pressure applying rod (1) is loosened, the spring (8) rebounds, the acoustic wedge block (16) is unloaded, no pressure exists on the acoustic wedge block, and the phenomenon that the distance between the two ultrasonic probes (15) is changed due to the deformation of the acoustic wedge block (16) caused by the pressure in the process of transmitting and receiving ultrasonic waves is avoided.
2. The portable ultrasonic residual stress detector according to claim 1, wherein the upper end of the upper slide block (6) is provided with a groove matched with the pressure applying rod (1); the lower end of the lower sliding block is provided with a groove matched with the upper end of the universal joint seat.
3. The portable ultrasonic residual stress detector according to claim 1, wherein the center of the top cover is provided with a through hole through which the pressure applying rod (1) passes; the distance between the top cover (5) and the second adjusting part (3) below the adjusting component is greater than zero; the lower extension boss and the base are fixed through a third fixing piece (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855224.4A CN107764443B (en) | 2017-09-20 | 2017-09-20 | Portable ultrasonic residual stress detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855224.4A CN107764443B (en) | 2017-09-20 | 2017-09-20 | Portable ultrasonic residual stress detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107764443A CN107764443A (en) | 2018-03-06 |
| CN107764443B true CN107764443B (en) | 2021-01-26 |
Family
ID=61266171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710855224.4A Active CN107764443B (en) | 2017-09-20 | 2017-09-20 | Portable ultrasonic residual stress detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107764443B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660309A (en) * | 2018-06-08 | 2018-10-16 | 北京理工大学 | A kind of gas pipeline welding residual stress high energy acoustic beam abatement device |
| CN110849521B (en) * | 2019-11-13 | 2021-05-28 | 中国石油大学(华东) | Portable loading and optical testing device applied to field residual stress |
| CN111366183A (en) * | 2020-03-13 | 2020-07-03 | 大连理工大学 | Mobile probe of integrated piezoelectric wafer with adjustable pressing force |
| CN112798164B (en) * | 2021-01-22 | 2023-03-28 | 石家庄铁道大学 | Steel construction residual stress ultrasonic monitoring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005030897A (en) * | 2003-07-11 | 2005-02-03 | Fuji Electric Systems Co Ltd | Ultrasonic flow measurement system and its manufacturing method |
| CN103017951A (en) * | 2011-09-22 | 2013-04-03 | 北京理工大学 | Flat slab stress field test device |
| CN204115919U (en) * | 2014-09-30 | 2015-01-21 | 徐州工程学院 | Portable residual stress test device |
| CN105699495A (en) * | 2016-03-24 | 2016-06-22 | 江苏科技大学 | Portable ultrasonic probe pressure adjusting device and use method |
| CN106289616A (en) * | 2016-10-13 | 2017-01-04 | 西南交通大学 | The adjustable Portable probe fixing device of ultrasonic measurement of stress system coupling pressure |
-
2017
- 2017-09-20 CN CN201710855224.4A patent/CN107764443B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005030897A (en) * | 2003-07-11 | 2005-02-03 | Fuji Electric Systems Co Ltd | Ultrasonic flow measurement system and its manufacturing method |
| CN103017951A (en) * | 2011-09-22 | 2013-04-03 | 北京理工大学 | Flat slab stress field test device |
| CN204115919U (en) * | 2014-09-30 | 2015-01-21 | 徐州工程学院 | Portable residual stress test device |
| CN105699495A (en) * | 2016-03-24 | 2016-06-22 | 江苏科技大学 | Portable ultrasonic probe pressure adjusting device and use method |
| CN106289616A (en) * | 2016-10-13 | 2017-01-04 | 西南交通大学 | The adjustable Portable probe fixing device of ultrasonic measurement of stress system coupling pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107764443A (en) | 2018-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107764443B (en) | Portable ultrasonic residual stress detector | |
| US8800392B2 (en) | Deformation testing device | |
| WO2020048370A1 (en) | Scanning device for performing ultrasonic testing of bolt | |
| CN114034420B (en) | Linkage device with synchronously adjustable distance and angle, transceiving module, plane stress field detection device and plane stress field detection method | |
| JP2613654B2 (en) | Ultrasonic testing | |
| CN102879137A (en) | Flexible fixing device for residual stress detection | |
| CN210243687U (en) | Universal measuring clamp for measuring transverse piezoelectric constant of piezoelectric material | |
| CN108802202A (en) | A kind of ultrasonic wave tandem probe apparatus and method | |
| CN204085362U (en) | Fly wheel assembly is beated comprehensive check tool | |
| CN103017695B (en) | Precise detection device and detection method of principal axis cone hole accuracy | |
| CN109556971B (en) | Cold spraying sample bending performance test device capable of directly reading bending angle | |
| CN107806948B (en) | Ultrasonic residual stress detector | |
| CN202075190U (en) | Steel ball drop test device for testing glass strength of touch screen | |
| CN2932303Y (en) | Inside diameter measuring device | |
| CN201251533Y (en) | Block compression testing machine | |
| CN212674654U (en) | Portable concrete pressure test device | |
| CN110487913B (en) | Clamp for ultrasonic transducer calibration device | |
| CN208902317U (en) | A kind of Axle Surface residual stress detection device | |
| CN101482405A (en) | Curve example substrate coating thickness measuring method and sample clamping tool | |
| CN213874098U (en) | Detection tool for detecting tooth crest diameter of inner gear ring | |
| CN203881470U (en) | Dynamic impact-force calibrating device | |
| CN105241606A (en) | Gear selecting and shifting force transducer calibration method | |
| CN213422884U (en) | Concrete resiliometer | |
| CN207832559U (en) | A kind of adhesive compression shear strength detection device | |
| CN204556479U (en) | Coating binding force proving installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230113 Address after: 102209 South District of Future Science City, Beiqijia Town, Changping District, Beijing Patentee after: CHINALCO MATERIALS APPLICATION RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINALCO INSTITUTE OF SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 102209 building 10, Chinalco science and Technology Research Institute, South District, future science and Technology City, Beiqijia Town, Changping District, Beijing Patentee before: CHINALCO MATERIALS APPLICATION RESEARCH INSTITUTE Co.,Ltd. |
|
| TR01 | Transfer of patent right |