CN204116145U - Constant-load tensile experimental device - Google Patents
Constant-load tensile experimental device Download PDFInfo
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- CN204116145U CN204116145U CN201420555767.6U CN201420555767U CN204116145U CN 204116145 U CN204116145 U CN 204116145U CN 201420555767 U CN201420555767 U CN 201420555767U CN 204116145 U CN204116145 U CN 204116145U
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- 238000012360 testing method Methods 0.000 claims abstract description 94
- 238000005260 corrosion Methods 0.000 claims abstract description 39
- 230000007797 corrosion Effects 0.000 claims abstract description 39
- 238000009864 tensile test Methods 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 12
- 239000007769 metal material Substances 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract 3
- 238000011081 inoculation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- 230000001105 regulatory effect Effects 0.000 description 9
- 208000037656 Respiratory Sounds Diseases 0.000 description 7
- 230000010287 polarization Effects 0.000 description 6
- 230000005518 electrochemistry Effects 0.000 description 5
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 4
- 239000008103 glucose Substances 0.000 description 4
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses a tensile experimental apparatus of constant load belongs to the tensile experimental technical field of metal material constant load. The device comprises: constant load loading device and corrosive environment container, corrosive medium is held in the corrosive environment container, and the device still includes: the electrochemical testing device comprises an electrochemical testing device, an auxiliary electrode, a reference electrode and a working electrode made of a metal sample to be tested; the auxiliary electrode and the reference electrode are arranged on the corrosion environment container, one end of the auxiliary electrode and one end of the reference electrode extend into the corrosion environment container, the working electrode is arranged in the corrosion environment container, and the working electrode is connected with the constant load loading device; the electrochemical testing device is electrically connected with the auxiliary electrode, the reference electrode and the working electrode respectively. The constant-load tensile experiment device can effectively monitor the processes of the inoculation, generation and expansion of the cracks of the metal sample, accelerate the constant-load tensile experiment of the metal sample and reduce the experiment period.
Description
Technical field
The utility model relates to metal material constant load tensile experimental technique field, particularly a kind of constant load tensile test device.
Background technology
Constant load tensile test device is mainly used in the stress corrosion crack studying metal material, wherein, stress corrosion crack refers to that the metal material of Tensile effect of stress is in some specific corrosive medium, due to corrosive medium and stress synergy and produce Delayed Cracking, or the phenomenon of delayed fracture.
Utilize constant load tensile test device to carry out constant load stretching experiment, fill in some specific corrosive medium corrosion environment container by test button is placed in, then for this test button provides constant pulling force, until test button generation stress corrosion crack.
Realizing in process of the present utility model, inventor finds that prior art at least exists following problem:
Existing constant load tensile test device is in the constant load stretching experiment process of test button, need the crackle of manual observation test button to breed, occur, expansion process, effectively cannot monitor this process, and this experimental period is long, waste of manpower resource.
Summary of the invention
In order to solve existing constant load tensile test device in the experimentation of test button, cannot breed the crackle of test button, occur, expansion process effectively monitors, and this experimental period is long, the problem of waste of manpower resource, the utility model embodiment provides a kind of constant load tensile test device.Described technical scheme is as follows:
The utility model embodiment provides a kind of constant load tensile test device, and described device comprises:
Constant load charger and corrosion environment container, fill corrosive medium in described corrosion environment container, the working electrode that described device also comprises electrochemical testing device, auxiliary electrode, contrast electrode and adopts test button to be tested to make;
Described auxiliary electrode and described contrast electrode are located on described corrosion environment container, and one end of one end of described auxiliary electrode and described contrast electrode is stretched in described corrosion environment container, described working electrode is located in described corrosion environment container, and described working electrode is connected with described constant load charger;
Described electrochemical testing device is electrically connected with described auxiliary electrode, described contrast electrode and described working electrode respectively.
Particularly, described electrochemical testing device is constant potential galvanostat.
Particularly, described constant load charger can be stress loop formula constant load charger or spring constant load charger.
Further, described constant load charger is stress ring type constant load charger, described constant load charger comprises: stress loop, pedestal, first bolt, first nut, second bolt and the second nut, described stress loop is symmetrical arranged two tapped through holes, described stress loop is coordinated by the first bolt and described two radial tapped through holes arranged and is arranged on described pedestal, described second bolt coordinates with another in described two tapped through holes and is arranged in described stress loop, be connected with described first bolt in the ring that described first nut is arranged on described stress loop, second nut to be arranged in described stress loop and to be connected with described second bolt, described working electrode is connected between described first nut and described second nut.
Further, described device also comprises: stress loop detectors of load and stress loop load probe, and described stress loop loads probe and is electrically connected with described stress loop detectors of load of answering.
Further, described device also comprises: the first computing machine and the first printer, and described first computing machine is electrically connected with described stress loop detectors of load, and described first printer is electrically connected with described first computing machine.
Particularly, described device also comprises: second computer and the second printer, and described second computer is electrically connected with described electrochemical testing device, and described second printer is electrically connected with described second computer.
Particularly, described corrosion ring container is provided with draft tube, and one end of described draft tube is stretched in described corrosion environment container.
Further, described device also comprises: air flow controller and gas bomb, and described air flow controller is communicated with by described draft tube with described corrosion environment container, and described gas bomb is communicated with described air flow controller.
Particularly, described corrosive medium can be aqueous solution.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
By corrosion environment container establishes auxiliary electrode, contrast electrode and working electrode, wherein, working electrode adopts test button to make; And electrochemical testing device is set, this electrochemical testing device is electrically connected with auxiliary electrode, contrast electrode and working electrode respectively, forms three electrode chemistry test macros.By constant potential and the galvanostatic polarization function of the electrochemical testing device in three electrode chemistry test macros, realize accelerating the constant load stretching experiment of test button, to shorten experimental period.By the electrochemistry noise function of the electrochemical testing device in three electrode chemistry test macros, detect the change of the glucose current equation of test button in stretching experiment, to realize breeding the crackle of test button in an experiment, to occur, expansion process effectively monitors.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of constant load tensile test device structural representation that the utility model embodiment one provides;
Fig. 2 is a kind of corrosion environment structure of container schematic diagram that the utility model embodiment one provides;
Fig. 3 is a kind of stress ring type constant load charger structural representation that the utility model embodiment one provides.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Embodiment one
The utility model embodiment provides a kind of constant load tensile test device, see Fig. 1 and Fig. 2, this device comprises: constant load charger 1, corrosion environment container 2, electrochemical testing device 3, auxiliary electrode 21, contrast electrode 22 and the working electrode 23 adopting test button to be tested to make, fill corrosive medium in corrosion environment container 2; Auxiliary electrode 21 and contrast electrode 22 are located on corrosion environment container 2, and one end of one end of auxiliary electrode 21 and contrast electrode 22 is stretched in corrosion environment container 2, working electrode 23 is located in corrosion environment container 2, working electrode 23 is connected with constant load charger 1, and electrochemical testing device 3 is electrically connected with auxiliary electrode 21, contrast electrode 22 and working electrode 23 respectively.
In the present embodiment, the corrosive medium for simulating the environment residing for test button is filled in corrosion environment container 2, Test sites need be immersed in corrosive medium when carrying out constant load stretching experiment by test button to be tested, test button penetration corrosion environmental chamber 2.
In the present embodiment, be electrically connected with auxiliary electrode 21, contrast electrode 22 and working electrode 23 respectively by electrochemical testing device 3, form three electrode chemistry test macros, wherein, working electrode 23 adopts test button to be tested to arrange and forms, and three electrode chemistry test macros can obtain current potential and the current information of test button simultaneously; Constant load tensile test device is by the electrochemistry noise function of the electrochemical testing device 3 in three electrode chemistry test macros, detect the change of the glucose current equation of test button in stretching experiment, and then realization is bred to the crackle in test button drawing process, occurs, is expanded and monitor.In addition, by the constant potential of electrochemical testing device 3 in three electrodes chemistry test macros and galvanostatic polarization function, can the experimentation of test button accelerate.
Particularly, electrochemical testing device 3 can be constant potential galvanostat.
In actual applications, electrochemical testing device 3 can be traditional constant potential galvanostat, also can be other model electrochemical proving installations.
In actual applications, electrochemical testing device 3 can realize multiple electro-chemical test, comprises constant potential and galvanostatic polarization, electrokinetic potential and streaming current polarization, AC impedance and electrochemistry noise etc.
Particularly, constant load charger 1 can be stress loop formula constant load charger or spring constant load charger.
In actual applications, constant load charger 1 is not limited to above-mentioned two kinds of constant load chargers.
It should be noted that, in the present embodiment, see Fig. 3, constant load charger 1 is stress ring type constant load charger.
Further, when constant load charger 1 is stress ring type constant load charger, this constant load charger 1 comprises: stress loop 101, pedestal 102, first bolt 103, first nut 104, second bolt 105 and the second nut 106, stress loop 101 is symmetrical arranged two radial tapped through holes arranged, stress loop 101 to be coordinated with in two tapped through holes by the first bolt 103 and is arranged on pedestal 102, second bolt 105 coordinates with another in two tapped through holes and is arranged in stress loop 101, be threaded with the first bolt 103 in the ring that first nut 104 is arranged on stress loop 101, second nut 106 to be arranged in stress loop 101 ring and to be threaded with the second bolt 105, working electrode 23 is connected between the first nut 104 and the second nut 106.
In the present embodiment, the screw rod of the first bolt 103 and the second bolt 105 all passes the tapped through hole that stress loop 101 is offered, and their head is all outside stress loop 101 ring.The two ends of test button is set to screw-type, and one end of test button is connected with the first bolt 103 by the first nut 104, and its other end is connected with the second bolt 105 by the second nut 106.
In actual applications, after installing test button, rotate the second bolt 105 by standard wrench, the deformation of stress loop 101 can be regulated, and then the size of the acting force regulating stress loop 101 to load for test button.
Further, this device also comprises: stress loop detectors of load 4 and stress loop load probe 5, and this stress loop loads probe 5 and is electrically connected with stress loop detectors of load 4.
In the present embodiment, stress loop loads probe 5 for detecting the deformation of stress loop 101, the size of the acting force that the data analysis stress loop 101 that stress loop detectors of load 4 is obtained by stress loop loading probe 5 provides for test button.
In actual applications, the deformation that the second bolt 105 regulates stress loop 101 is rotated by standard wrench, load by stress loop the regulated quantity that probe 5 detects the second bolt 105, stress loop detectors of load 4 carrys out the size of the acting force that calculated stress ring 101 produces due to deformation according to this regulated quantity.By stress loop detectors of load 4, can be accurately the acting force of test button loading experiment setting size.
Further, this device also comprises: the first computing machine 6 and the first printer 7, this first computing machine 6 is electrically connected with stress loop detectors of load 4, and the first printer 7 is electrically connected with the first computing machine 6.
In actual applications, for stress loop detectors of load 4 configures the first computing machine 6 and the first printer 7, both can realize the automatic detection of stress loop detectors of load 4, the test button acting force load condition that stress loop detectors of load 4 detects can have been printed again.
Particularly, this device also comprises: second computer 8 and the second printer 9, and this second computer 8 is electrically connected with electrochemical testing device 3, and the second printer 9 is electrically connected with second computer 8.
In actual applications, for electrochemical testing device 3 is equipped with second computer 8 and the second printer 9, both can realize the automatic test of electrochemical testing device 3, the Electrochemical results of electrochemical testing device 3 can have been printed again.
In actual applications, the first computing machine 6 and second computer 8 can be set to same computing machine, the first printer 7 and the second printer 9 are set to same printer.
Particularly, corrosion environment container 2 is provided with draft tube 24, and one end of this draft tube 24 is stretched in corrosion environment container 2.
Further, this device also comprises: air flow controller 10 and gas bomb 11, and air flow controller 10 is communicated with by draft tube 24 with corrosion environment container 2, and gas bomb 11 is communicated with air flow controller 10.
In actual applications, air flow controller 10 is mainly used in the flow controlling the gas passing into corrosion environment container 2.The gas stored in gas bomb 11 can be nitrogen, oxygen, sulfuretted hydrogen, carbon dioxide, which kind of gas the gases such as methane, specifically pass into and whether pass into gas, experimentally require and determine, such as when carrying out sulfide-stress cracking and evaluating, according to national standard, require to pass into hydrogen sulfide gas.
Particularly, corrosive medium can be aqueous solution.
In the present embodiment, owing to needing corrosive medium to have good electric conductivity, to coordinate three electrode chemistry test macros, accelerate experimentation, corrosive medium can be aqueous solution.
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3, for constant load charger for stress ring type constant load charger, brief description is carried out to the experimental principle of constant load tensile test device:
First, be that the test button of screw-type is arranged in stress ring type constant load charger by two ends, particularly, test button two ends, by being threaded with first nut 104 and the second nut 106 of stress ring type constant load charger, are carried on stress ring type constant load charger.Wherein, test button penetration corrosion environmental chamber 2, and the sample site of test button is immersed in corrosive medium.
Then, stress ring type constant load charger is regulated, for test button provides the tensile force meeting requirement of experiment size by standard wrench.Particularly, the second bolt 105 of stress ring type constant load charger is regulated by standard wrench, the deformation of stress loop 101 can be regulated, the regulated quantity that probe 5 detects the second bolt 105 is loaded by stress loop, and adopt stress loop detectors of load 4, according to the size of the acting force (i.e. tensile force) that this regulated quantity calculated stress ring 101 provides for test button because of deformation.
Finally, be electrically connected the three electrode chemistry test macros formed with auxiliary electrode 21, contrast electrode 22 and working electrode 23 by electrochemical testing device 3, experimentation is accelerated, and the crackle in test button drawing process is bred, occurs, expand and monitor.Particularly, working electrode 23 adopts test button to make, and the electrochemical testing device 3 in three electrode chemistry test macros, by its constant potential and galvanostatic polarization function, accelerates experimentation (i.e. the corrosion process of test button).By the change of glucose current equation of test button in the electrochemistry noise Function detection stretching experiment of the electrochemical testing device 3 in three electrodes chemistry test macros, realize breeding the crackle in test button drawing process, occur, expand and monitor.
The utility model embodiment is by corrosion environment container establishes auxiliary electrode, contrast electrode and working electrode, and wherein, working electrode adopts test button to make; And electrochemical testing device is set, this electrochemical testing device is electrically connected with auxiliary electrode, contrast electrode and working electrode respectively, forms three electrode chemistry test macros.By constant potential and the galvanostatic polarization function of the electrochemical testing device in three electrode chemistry test macros, realize accelerating the constant load stretching experiment of test button, to shorten experimental period.By the electrochemistry noise function of the electrochemical testing device in three electrode chemistry test macros, detect the change of the glucose current equation of test button in stretching experiment, to realize breeding the crackle of test button in an experiment, to occur, expansion process effectively monitors.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a constant load tensile test device, described device comprises: constant load charger (1) and corrosion environment container (2), corrosive medium is filled in described corrosion environment container (2), it is characterized in that, the working electrode (23) that described device also comprises electrochemical testing device (3), auxiliary electrode (21), contrast electrode (22) and adopts test button to be tested to make;
Described auxiliary electrode (21) and described contrast electrode (22) are located on described corrosion environment container (2), and one end of one end of described auxiliary electrode (21) and described contrast electrode (22) is stretched in described corrosion environment container (2), described working electrode (23) is located in described corrosion environment container (2), and described working electrode (23) is connected with described constant load charger (1);
Described electrochemical testing device (3) is electrically connected with described auxiliary electrode (21), described contrast electrode (22) and described working electrode (23) respectively.
2. device according to claim 1, is characterized in that, described electrochemical testing device (3) is constant potential galvanostat.
3. device according to claim 1, is characterized in that, described constant load charger (1) can be stress loop formula constant load charger or spring constant load charger.
4. device according to claim 3, it is characterized in that, described constant load charger (1) is stress ring type constant load charger, described constant load charger (1) comprising: stress loop (101), pedestal (102), first bolt (103), first nut (104), second bolt (105) and the second nut (106), described stress loop (101) is symmetrical arranged two radial tapped through holes arranged, described stress loop (101) to be coordinated with in described two tapped through holes by the first bolt (103) and is arranged on described pedestal (102), described second bolt (105) coordinates with another in described two tapped through holes and is arranged in described stress loop (101), be connected with described first bolt (103) in the ring that described first nut (104) is arranged on described stress loop (101), described second nut (106) to be arranged in described stress loop (101) and to be connected with described second bolt (105), described working electrode (23) is connected between described first nut (104) and described second nut (106).
5. device according to claim 4, it is characterized in that, described device also comprises: stress loop detectors of load (4) and stress loop load probe (5), and described stress loop loads probe (5) and is electrically connected with described stress loop detectors of load (4).
6. device according to claim 5, it is characterized in that, described device also comprises: the first computing machine (6) and the first printer (7), described first computing machine (6) is electrically connected with described stress loop detectors of load (4), and described first printer (7) is electrically connected with described first computing machine (6).
7. device according to claim 1, it is characterized in that, described device also comprises: second computer (8) and the second printer (9), described second computer (8) is electrically connected with described electrochemical testing device (3), and described second printer (9) is electrically connected with described second computer (8).
8. device according to claim 1, is characterized in that, described corrosion ring container (2) is provided with draft tube (24), and one end of described draft tube (24) is stretched in described corrosion environment container (2).
9. device according to claim 8, it is characterized in that, described device also comprises: air flow controller (10) and gas bomb (11), described air flow controller (10) is communicated with by described draft tube (24) with described corrosion environment container (2), and described gas bomb (11) is communicated with described air flow controller (10).
10. the device according to any one of claim 1-9, is characterized in that, described corrosive medium is aqueous solution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555767.6U CN204116145U (en) | 2014-09-25 | 2014-09-25 | Constant-load tensile experimental device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420555767.6U CN204116145U (en) | 2014-09-25 | 2014-09-25 | Constant-load tensile experimental device |
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| CN204116145U true CN204116145U (en) | 2015-01-21 |
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| CN201420555767.6U Expired - Fee Related CN204116145U (en) | 2014-09-25 | 2014-09-25 | Constant-load tensile experimental device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697873A (en) * | 2015-03-06 | 2015-06-10 | 合肥通用机械研究院 | Sulfide stress corrosion cracking testing apparatus |
| CN104897744A (en) * | 2015-04-23 | 2015-09-09 | 中国石油大学(华东) | Metal hydrogen permeation behavior research device and method |
| CN110095350A (en) * | 2019-04-30 | 2019-08-06 | 北京航天发射技术研究所 | Evaluate the constant load testing stand and test method of transmitting station substrate corrosion susceptibility |
| CN111141612A (en) * | 2020-01-21 | 2020-05-12 | 鞍钢股份有限公司 | Device and method for testing hydrogen sulfide stress corrosion resistance of oil well pipe |
| CN112504954A (en) * | 2020-11-24 | 2021-03-16 | 山东科技大学 | Experimental device and method for loading stress-environmental corrosion coupling effect |
| CN117949292A (en) * | 2024-03-26 | 2024-04-30 | 北京科技大学 | Metal surface crack testing device under tensile stress and hydrogen permeation conditions and its use method |
-
2014
- 2014-09-25 CN CN201420555767.6U patent/CN204116145U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697873A (en) * | 2015-03-06 | 2015-06-10 | 合肥通用机械研究院 | Sulfide stress corrosion cracking testing apparatus |
| CN104697873B (en) * | 2015-03-06 | 2017-08-25 | 合肥通用机械研究院 | A kind of sulfide-stress cracking experimental rig |
| CN104897744A (en) * | 2015-04-23 | 2015-09-09 | 中国石油大学(华东) | Metal hydrogen permeation behavior research device and method |
| CN110095350A (en) * | 2019-04-30 | 2019-08-06 | 北京航天发射技术研究所 | Evaluate the constant load testing stand and test method of transmitting station substrate corrosion susceptibility |
| CN111141612A (en) * | 2020-01-21 | 2020-05-12 | 鞍钢股份有限公司 | Device and method for testing hydrogen sulfide stress corrosion resistance of oil well pipe |
| CN111141612B (en) * | 2020-01-21 | 2022-05-13 | 鞍钢股份有限公司 | Device and method for testing hydrogen sulfide stress corrosion resistance of oil well pipe |
| CN112504954A (en) * | 2020-11-24 | 2021-03-16 | 山东科技大学 | Experimental device and method for loading stress-environmental corrosion coupling effect |
| CN117949292A (en) * | 2024-03-26 | 2024-04-30 | 北京科技大学 | Metal surface crack testing device under tensile stress and hydrogen permeation conditions and its use method |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 |