CN203688355U - Three-point bending test clamp for testing stress corrosion cracking speed rate - Google Patents
Three-point bending test clamp for testing stress corrosion cracking speed rate Download PDFInfo
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- CN203688355U CN203688355U CN201420040288.0U CN201420040288U CN203688355U CN 203688355 U CN203688355 U CN 203688355U CN 201420040288 U CN201420040288 U CN 201420040288U CN 203688355 U CN203688355 U CN 203688355U
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- point bending
- stress corrosion
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- shaped support
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Abstract
The utility model discloses a three-point bending test clamp for testing stress corrosion cracking speed rate. The three-point bending test clamp comprises a U-shaped bracket, wherein a connecting plate is arranged on the inner side of the end part of the U-shaped bracket; a pressure contact is arranged below one end of the connecting plate; the U-shaped bracket, the connecting plate and the pressure contact are of an integrated structure; a bolt penetrates to the middle position of the bottom of the U-shaped bracket; a force applying contact is arranged at one end, penetrating through the U-shaped bracket, of the bolt; a pre-tightening gasket is arranged between the bolt and the force applying contact; and a small three-point bending sample is arranged between the pressure contact and the force applying contact. The size of the small three-point bending sample is calibrated according to a J integral sample standard, the small three-point bending sample can be clamped and loaded by controlling the bolt to enable the force applying contact to be matched with two pressure contacts, other additional loads do not need to be used, and the small three-point bending sample can be placed into a high-pressure kettle in which a high-temperature and high-pressure water environment of a nuclear power plant is simulated to perform stress corrosion cracking process test. The three-point bending test clamp is high in practicality, good in using effect, and convenient to popularize and use.
Description
Technical field
The utility model relates to a kind of for testing the fixture of stainless steel or nickel-base alloy stress corrosion crack speed under High Temperature High Pressure water environment, is specifically related to a kind of three point bending test fixture for test stress corrosion cracking speed.
Background technology
Because austenitic stainless steel and nickel-base alloy have extraordinary decay resistance, so select in a large number this type of material in the key structure of nuclear power station; Under the High Temperature High Pressure water environment of nuclear power station, for some reason, particularly due to the process characteristic of welding joint, may make nuclear power station key structure have various types of crack defects, under the effect of stress corrosion environment, these crack defects can produce stress corrosion crack, and the constantly expansion in time of the crackle of this stress corrosion, finally can cause nuclear power station key structure and equipment fracture or damage; Therefore austenitic stainless steel and the nickel-bass alloy material stress corrosion crack problem under High Temperature High Pressure water environment is one of key issue of nuclear power structure and the military service of equipment long-term safety.
At present, the domestic test of doing stress corrosion crack rate determination under High Temperature High Pressure water environment is a newer direction, more existing similar techniques, the general compact tensile specimen that adopts, need the cupping machine loading that stretches, the rate test of material stress corrosion cracking is subject to testing equipment restriction, testing equipment complexity and somewhat expensive, therefore, need to develop a kind of easy three point bending test fixture for test stress corrosion cracking speed, for the universal and nuclear power station key structure residual life evaluation of stress corrosion crack rate test test provides new way.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of three point bending test fixture for test stress corrosion cracking speed is provided, it is simple in structure, reasonable in design, it is convenient to realize, use simple operation, demarcate the size of three-point bending small sample by J integration sample standard and determine grip size, can application of force contact be matched with two pressure contacts by controlling bolt, three-point bending small sample is clamped and loaded, do not need to use other plus loads, practical, result of use is good, be convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of three point bending test fixture for test stress corrosion cracking speed, it is characterized in that: comprise U-shaped support, described U-shaped bracket end inner side is provided with web joint, below, described web joint one end arranges pressure contact, and described U-shaped support, web joint and pressure contact are structure as a whole; Centre position, the bottom place of described U-shaped support is equipped with bolt, described bolt is provided with application of force contact through one end of U-shaped support, between described bolt and application of force contact, be provided with tightening cushion, between described pressure contact and application of force contact, three-point bending small sample be set.
Above-mentioned a kind of three point bending test fixture for test stress corrosion cracking speed, is characterized in that: described pressure contact and application of force contact are semicircular structure.
Above-mentioned a kind of three point bending test fixture for test stress corrosion cracking speed, is characterized in that: centre position, the bottom place of described U-shaped support offers tapped through hole, and described bolt passes U-shaped support by described through hole.
The utility model compared with prior art has the following advantages:
1, the utility model is simple in structure, reasonable in design, and processing is simple, and it is convenient to realize.
2, the utility model uses the three-point bending small sample that relative state dimensioning is less, by controlling bolt, application of force contact is matched with two pressure contacts, three-point bending small sample is clamped and loaded, do not need to use other plus loads, be convenient to be placed in the autoclave of simulating nuclear power station High Temperature High Pressure water environment and carry out stress corrosion crack process testing.
3, the utility model is of many uses, not only can be used for stainless steel and the nickel-base alloy stress corrosion process experiment at autoclave, also can be used for simulating the stress corrosion crack process experiment of other material under other environment.
4, of the present utility model practical, result of use is good, is convenient to promote the use of.
In sum, the utility model is simple in structure, reasonable in design, it is convenient to realize, use simple operation, use the three-point bending small sample that relative state dimensioning is less, can make two pressure contacts of application of force contacts mates that three-point bending small sample is clamped and be loaded by controlling bolt, do not need to use other plus loads, be convenient to be placed in the autoclave of simulation nuclear power station High Temperature High Pressure water environment, carry out stress corrosion crack process testing, practical, result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is stereographic map of the present utility model.
Fig. 2 is front view of the present utility model.
Description of reference numerals:
1-U-shaped support; 2-three-point bending small sample; 3-bolt;
4-tightening cushion; 5-application of force contact; 6-web joint;
7-pressure contact.
Embodiment
As depicted in figs. 1 and 2, the utility model comprises U-shaped support 1, and described U-shaped support 1 inner side, end is provided with web joint 6, and described web joint 6 belows, one end arrange pressure contact 7, and described U-shaped support 1, web joint 6 and pressure contact 7 are structure as a whole; Centre position, the bottom place of described U-shaped support 1 is equipped with bolt 3, described bolt 3 is provided with application of force contact 5 through one end of U-shaped support 1, between described bolt 3 and application of force contact 5, be provided with tightening cushion 4, between described pressure contact 7 and application of force contact 5, three-point bending small sample 2 be set.
As depicted in figs. 1 and 2, in the present embodiment, described pressure contact 7 and application of force contact 5 are semicircular structure, and all carry out polishing, guarantee the loading accuracy of three-point bending small sample 2; Centre position, the bottom place of described U-shaped support 1 offers and is with female through hole, and described bolt 3 passes U-shaped support 1 by described through hole.
When concrete enforcement, U-shaped support 1, web joint 6 and pressure contact 7 are structure as a whole, bolt 3 is arranged through U-shaped support 1, place successively tightening cushion 4 and application of force contact 5 at bolt 3 through one end of U-shaped support 1, three-point bending small sample 2 is tentatively fixing by two pressure contacts 7 and application of force contact 5, makes the crack of three-point bending small sample 2 relative with application of force contact 5; According to the concrete needs of test, slowly tight a bolt 3 according to certain pretightning force, make bolt 3 provide respective loads by application of force contact 5 for three-point bending small sample 2; The fixture of having placed three-point bending small sample 2 is positioned over to the High Temperature High Pressure water environment for simulating nuclear power station, the stress corrosion crack speed of observing three-point bending small sample 2 by testing equipment for staff.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.
Claims (3)
1. the three point bending test fixture for test stress corrosion cracking speed, it is characterized in that: comprise U-shaped support (1), inner side, described U-shaped support (1) end is provided with web joint (6), below, described web joint (6) one end arranges pressure contact (7), and described U-shaped support (1), web joint (6) and pressure contact (7) are structure as a whole; Centre position, the bottom place of described U-shaped support (1) is equipped with bolt (3), described bolt (3) is provided with application of force contact (5) through one end of U-shaped support (1), between described bolt (3) and application of force contact (5), be provided with tightening cushion (4), between described pressure contact (7) and application of force contact (5), three-point bending small sample (2) be set.
2. according to a kind of three point bending test fixture for test stress corrosion cracking speed claimed in claim 1, it is characterized in that: described pressure contact (7) and application of force contact (5) are semicircular structure.
3. according to a kind of three point bending test fixture for test stress corrosion cracking speed claimed in claim 1, it is characterized in that: centre position, the bottom place of described U-shaped support (1) offers tapped through hole, described bolt (3) passes U-shaped support (1) by described through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040288.0U CN203688355U (en) | 2014-01-22 | 2014-01-22 | Three-point bending test clamp for testing stress corrosion cracking speed rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040288.0U CN203688355U (en) | 2014-01-22 | 2014-01-22 | Three-point bending test clamp for testing stress corrosion cracking speed rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688355U true CN203688355U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420040288.0U Expired - Fee Related CN203688355U (en) | 2014-01-22 | 2014-01-22 | Three-point bending test clamp for testing stress corrosion cracking speed rate |
Country Status (1)
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| CN (1) | CN203688355U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697858A (en) * | 2015-03-23 | 2015-06-10 | 深圳大学 | Rebar constitutive relation test device and method |
| CN105136596A (en) * | 2015-07-20 | 2015-12-09 | 西安科技大学 | Crack tip stress corrosion cracking situation test system and crack tip stress corrosion cracking situation test method having constant-displacement load |
| CN105865913A (en) * | 2015-01-22 | 2016-08-17 | 金发科技股份有限公司 | Equipment for testing resistance to environmental stress of plastic at high and low temperature |
| CN105865912A (en) * | 2015-01-22 | 2016-08-17 | 金发科技股份有限公司 | Equipment for testing resistance to environmental stress of plastic |
| CN106198198A (en) * | 2016-07-01 | 2016-12-07 | 西南石油大学 | A kind of four-point bending sample holding device for stress corrosion and loading method |
| CN108931544A (en) * | 2018-09-29 | 2018-12-04 | 内蒙古工业大学 | Sample clamping device and test method for electron backscatter diffraction research in situ |
| CN109682692A (en) * | 2017-10-17 | 2019-04-26 | 中国石油化工股份有限公司 | Three-point bending corrosion experimental device and purposes |
-
2014
- 2014-01-22 CN CN201420040288.0U patent/CN203688355U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865913A (en) * | 2015-01-22 | 2016-08-17 | 金发科技股份有限公司 | Equipment for testing resistance to environmental stress of plastic at high and low temperature |
| CN105865912A (en) * | 2015-01-22 | 2016-08-17 | 金发科技股份有限公司 | Equipment for testing resistance to environmental stress of plastic |
| CN104697858A (en) * | 2015-03-23 | 2015-06-10 | 深圳大学 | Rebar constitutive relation test device and method |
| CN105136596A (en) * | 2015-07-20 | 2015-12-09 | 西安科技大学 | Crack tip stress corrosion cracking situation test system and crack tip stress corrosion cracking situation test method having constant-displacement load |
| CN106198198A (en) * | 2016-07-01 | 2016-12-07 | 西南石油大学 | A kind of four-point bending sample holding device for stress corrosion and loading method |
| CN106198198B (en) * | 2016-07-01 | 2019-01-18 | 西南石油大学 | A kind of four-point bending sample holding device and loading method for stress corrosion |
| CN109682692A (en) * | 2017-10-17 | 2019-04-26 | 中国石油化工股份有限公司 | Three-point bending corrosion experimental device and purposes |
| CN108931544A (en) * | 2018-09-29 | 2018-12-04 | 内蒙古工业大学 | Sample clamping device and test method for electron backscatter diffraction research in situ |
| CN108931544B (en) * | 2018-09-29 | 2023-08-04 | 内蒙古工业大学 | Sample clamping device and test method for in-situ electron back scattering diffraction research |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20150122 |
|
| EXPY | Termination of patent right or utility model |