CN103926146B - A kind of small sample constant load stress corrosion test device and method of testing thereof - Google Patents

A kind of small sample constant load stress corrosion test device and method of testing thereof Download PDF

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Publication number
CN103926146B
CN103926146B CN201410147919.3A CN201410147919A CN103926146B CN 103926146 B CN103926146 B CN 103926146B CN 201410147919 A CN201410147919 A CN 201410147919A CN 103926146 B CN103926146 B CN 103926146B
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China
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sample
corrosion
stress
test
constant load
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CN201410147919.3A
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Chinese (zh)
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CN103926146A (en
Inventor
曾德智
侯铎
张智
施太和
黄黎明
谷坛
扈俊颖
邓文良
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西南石油大学
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Abstract

The present invention relates to a kind of small sample constant load stress corrosion evaluation methodology and device, it is characterized by can test light-wall pipe, small size component stress corrosion dehiscence resistant characteristic, Design and Machining small size sample, the accurately tensile stress level of controlled loading, in sour environment, carry out stress etching experiment, be evaluated studying to light-wall pipe, small size component resisting sulfide stress corrosion performance and the mechanism of action in sour corrosion environment according to experimental result.Utilize these evaluation method and device can measure cannot the light-wall pipe of processing criterion sample, small size component stress corrosion dehiscence resistant feature, draw the suitability of component material according to test result, thus light-wall pipe, small size component carried out selection and fitness-for-service assessment.

Description

A kind of small sample constant load stress corrosion test device and method of testing thereof
Technical field
The present invention relates to a kind of cannot the component of processing criterion sample for oil gas field light-wall pipe, small size component etc. Carry out the experimental technique of constant load stress corrosion evaluation, the invention still further relates to use the method test light-wall pipe, little The experimental provision of size members stress corrosion characteristics.
Background technology
In metal material chemical experiment, need in petroleum industry, chemical industry for light-wall pipe, small size Components etc. the component of processing criterion sample cannot carry out constant load stress etching experiment, thus to component at stress shape State and corrosive environment carry out material preferably and fitness-for-service assessment.Constant load stress etching experiment one the most both at home and abroad As method be to use NOL ring to carry out A method experiment according to standard NACE0177, specimen size φ 6.35 × 110mm, minimum grip end diameter 10mm;And compact specimen is φ 3.81 × 110mm, minimum grip end is straight Footpath 5mm.Above sample, and processing cannot be processed less than the light-wall pipe of 4mm, small size component for wall thickness During easily cause mechanical property to damage on sample itself, evaluation result differs bigger with field results, it is impossible to for In actual condition environment, component material preferably provides reliable basis with fitness-for-service assessment.Special thus for these The current Standard test method in small size position, specimen size parameter all can not meet field requirement.
In oil and chemical industry, etching problem is on the rise, and especially light-wall pipe, small size component are all one Determine under stress state, be on active service in sour corrosion environment.The stress etching experiment evaluation of these privileged sites at present With in engineering, there is extremely important value academicly, owing to lacking corresponding experimental technique and device, Corresponding evaluation experimental is caused not carry out.Metal material is added by conventional stress etching experiment by NOL ring Carry, small size privileged sites cannot processing sample, thus cannot be carried out the stress etching experiment at small size position, Thus the metal material selection at these positions does not has Standard test method and fitness-for-service assessment foundation, cause on-the-spot choosing , even there is the stress corrosion cracking accident caused owing to selection is unreasonable in material difficulty.
At present, conventional constant load stress corrosion experiment method has the disadvantage that
(A) specimen size is relatively big, is not suitable for light-wall pipe, the test of small size component anti-stress corrosion performance;
(B) small size position forces to be processed as standard specimen and cause mechanical property damage, experimental result reliability with On-the-spot reference value reduces;
(C) detection device is not suitable for the test of small size sample, and load range is excessive causes the inaccurate of load Really, experimentation cannot monitor sample load size in real time.
The problem that can not carry out small size sample stress etching experiment for solving conventional constant load stress etching experiment, this Bright by NOL ring, it is proposed that small sample constant load stress corrosion evaluation methodology, design small size stress corrosion is real The sample holder tested, charger, formed and be applicable to small size sample constant load stress corrosion Novel experimental method, Can be good at solving the problems referred to above.
Summary of the invention
The technical problem to be solved in the present invention is for the deficiencies in the prior art, it is provided that one can more truly reflect Field working conditions, for measuring light-wall pipe, the method for small size component constant load stress etching experiment.
Another technical problem that the invention solves the problems that be to provide a kind of simple in construction, easily operated, safe and reliable, Can carry out easily organizing parallel laboratory test, for simulating used by small size sample constant load stress etching experiment more Clamping device.
The present invention is to be achieved through the following technical solutions:
A kind of small sample constant load stress corrosion test device, it is characterised in that this device includes with lower component: position Displacement sensor (1), loading screw rod (2), standing screw (3), base (4), NOL ring (7), stress determination Sample (9), corrosion testing chamber (12), sample (16) and test medium (17);
Described NOL ring (7) is fixed on base (4) by fixing nut (5) by standing screw (3), This NOL ring (7) is internal has corrosion testing chamber (12), and this corrosion testing chamber (12) is equipped with test medium (17) With sample (16), the U-shaped clip end of described standing screw (3) passes the bottom in corrosion testing chamber (12) and consolidates Determine the bottom of sample (16), between described standing screw (3) and corrosion testing chamber (12), there is lower sealing ring (18).
Described loading screw rod (2) passes top and the stress determination examination of NOL ring (7) by loading nut (6) One end of sample (9) connects, and the other end of this stress determination sample (9) is U-shaped clip end, and described stress determination tries The U-shaped clip end of sample (9) through corrosion testing chamber (12) top and fix sample (16) top, described in add Carry, between screw rod (2) and corrosion testing chamber (12), there is upper sealing ring (11), described stress determination sample (9) Size identical with sample (16), and the middle part of this stress determination sample (9) install foil gauge (10).
Described base (4) has a support, and this support is provided with displacement transducer (1), this displacement sensing Device (1) is positioned at the top of NOL ring (7).
Sealing ring (13) is installed between described upper sealing ring (11) and lower sealing ring (18) and corrosion testing chamber (12); The U-shaped clip end of described stress determination sample (9) and the U-shaped clip end of standing screw (3) are by pin (20) Fixing sample (16).
The U-shaped clip end of described stress determination sample (9) and the U-shaped clip end of standing screw (3) and sample (16) Between there is insulation spacer (19), this insulation spacer (19) is politef material;Described loading screw rod (2), Standing screw (3), fixing nut (5), loading nut (6), NOL ring (7) and pin (20) are by corrosion resistance The Hastelloy of energy processes.
Between described loading nut (6) and NOL ring (7), there is rotation pad (8), this rotation pad (8) Processed by the Hastelloy of decay resistance.
Described corrosion testing chamber (12) also has air inlet (14) and gas outlet (15).
Its sample of institute (16) is flattened rectangular sample, and its thickness is 0.9mm~2mm, and width is 3mm~5mm.
Described test medium (17) is corrosive medium.
A kind of method using foregoing small sample constant load stress corrosion test device to carry out corrosion test, It is characterized in that comprising the following steps:
Step one, according to required simulated field working condition contrived experiment corrosive medium, sample loaded load size;
Step 2, installs sample (16), by loading screw rod (2) loading stress, by displacement transducer (1) Load is determined with foil gauge (10);
Step 3, adds in corrosion experiment chamber (12) by corrosive medium, by air inlet (14), gas outlet (15) It is respectively connecting to H2S、CO2Or N2Gas cylinder and exhaust treatment system;
Step 4, after corrosive medium carries out abundant deoxygenation in corrosion experiment chamber (12), is passed through H2S or CO2Deng corrosion Property gas, the record time start experiment, described test period is 720h;
Step 5, after experiment terminates, carries out abundant deoxygenation, is unloaded by sample (16), observes whether sample ruptures And carry out crack detection, specimen surface erosion profile and corrosion product analysis.
Beneficial effect:
(A) specimen size is little, it is simple to processing;
(B) foil gauge and displacement transducer detection load can be utilized simultaneously, ensure the accuracy of loaded load.
(C) experimentation can monitoring, whether sample deforms upon and the time dependent relation of displacement in real time Curve.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation:
Fig. 1 is the main device structural representation realizing the present invention.
Fig. 2 is the sample holder position schematic diagram realizing the present invention.
Fig. 3 is the small sample processing dimension figure realizing the present invention.
Fig. 4 is loaded load of the present invention and conventional method magnitude of load comparison diagram.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.
Refering to shown in Fig. 1, in the present invention, a kind of small sample constant load stress etching experiment device, mainly includes position Displacement sensor (1), load screw rod (2), standing screw (3), base (4), fixing nut (5), load nut (6), NOL ring (7), rotation pad (8), stress determination sample (9), foil gauge (10), upper sealing ring (11), corrosion are in fact Test chamber (12), sealing ring (13), air inlet (14), gas outlet (15), sample (16), test medium (17), under close Seal ring (18), insulation spacer (19), pin (20);Described NOL ring (7) upper and lower part is provided with female thread respectively, Bottom is secured firmly on base (4) by standing screw (3), fixing nut (5), and top is tried by stress determination Sample (9), loading nut (6), rotation pad (8) load;Described loading screw rod (2) lower end is provided with stress and surveys Determining sample (9), size, size are identical with sample (16), and parallel position is provided with foil gauge (10), thus in real time The size of monitoring loading stress;Described NOL ring (7) load deflection is measured by displacement transducer (1) and real-time Record;Described sample (16) is arranged in corrosion experiment chamber (12), is totally submerged by test medium (17), passes through Load screw rod (2), standing screw (3) connect and load, by upper sealing ring (11), lower sealing ring (18) with And sealing ring (13) seals, form closed system;It is provided with air inlet (14) on described corrosion experiment chamber (12) With gas outlet (15), may be flowed into corrosive gas;Described sample (16) upper end is passed through with loading screw rod (2) Pin (20) connects, and lower end and standing screw (3) are connected by pin (20), sample (16) and loading screw rod (2), Insulation spacer (19) it is provided with between standing screw (3), thus the experimental error avoiding galvanic couple factor to cause, make reality Test result accurately and reliably.
In the present invention, a kind of small sample constant load stress corrosion evaluation methodology is as follows.
(A) field working conditions condition simulation, concrete grammar is as follows:
A () determines gas phase, liquid phase component according to field working conditions condition, by corrosion experiment chamber (12) volume calculations The preparation of liquid phase component, and it is passed through H2S、CO2Speed Deng corrosive gas;
B (), according to on-the-spot member stress condition, selects loaded load big according to stress suffered by it or strain size Little.
(B) installing fixture and loading procedure, concrete grammar is as follows:
A sample (16) upper end is connected by pin (20) by () in stress determination sample (9) lower end, use insulation spacer (19) being insulated with stress determination sample (9) by sample (16), pin (20) is passed through in standing screw (3) in sample (16) lower end Connect, insulate with insulation spacer (19) equally, then by sealing ring (13) and upper sealing ring (11), lower seal Ring (18) is separately mounted to stress determination sample (9) lower end and standing screw (3) upper end, and entirety puts into corrosion experiment chamber (12) in and tighten upper sealing ring (11) and lower sealing ring (18) to ensure to seal, use the fixing nut (5) will be fixing Screw rod (3), NOL ring (7) are fixed on base (4), use and load screw rod (2) and load nut (6) by stress determination Sample (9) upper end is fixed, and foil gauge (10) is attached to stress determination sample (9) parallel-segment, installation position displacement sensor (1) Start to load according to experimental design stress, record related data, observe displacement transducer (1) and foil gauge (10) simultaneously Reading to guarantee the accuracy of sample (16) loaded load;
B corrosive medium is added in corrosion experiment chamber (12) by (), connected respectively in air inlet (14), gas outlet (15) At H2S、CO2Or N2Gas cylinder and exhaust treatment system;
(C), after corrosive medium carries out abundant deoxygenation in corrosion experiment chamber (12), it is passed through H2S or CO2Etc. corrosivity Gas, the record time start experiment.
(D) after experiment terminates, carrying out abundant deoxygenation, unloaded by sample (16), whether observation sample ruptures and goes forward side by side Row crack detection, specimen surface erosion profile and corrosion product analysis, concrete grammar is as follows:
If a () sample (16) ruptures, cleaning fracture carries out fracture apperance observation and Analysis on action mechanism draws experiment Report;
If (b) sample (16) not fracture, first carry out specimen surface erosion profile, corrosion product film analysis; Then cleaning corrosion product, observe matrix of samples etch state, analysis and summary draws laboratory report.
Example 1 uses small sample to carry out conventional stress corrosion test
Certain metal composite pipe anti-stress corrosion performance is tested, is first according to Fig. 3 dimensioned sample 6 Part, sample thickness can adjust accordingly according to multiple tube wall thickness, is installed on stress etching experiment device, Concrete loading data such as table 1.
After testing 720 hours, washed samples carries out morphology observation and finds with microscopic analysis, and 6 samples are not all sent out Raw fracture, but to a certain degree damaging occurs in different parts, wherein test specimen 1 and test specimen 2 macro surface not damaged, Test specimen 4 has the macroscopic cracking of substantially cracking, and test specimen 6 surface occurs that fish scale-shaped damages, test specimen 3 and test specimen 5 There is irregular macroscopic damage on surface, can determine that stress corrosion resisted in the present context by material by sample degree of injury Performance.
Example 2 present invention carries out small sample stress corrosion test
Same processing sample 6, is assemblied in sample on stress corrosion Sample devices according to the present invention, to load Corrosion experiment chamber (12) wouldn't be installed when testing, foil gauge (10) is affixed on stress determination sample (9) parallel-segment, According to the interaction principle of power, only need counter stress to measure sample (9) and carry out stress-strain test, can be accurately Record the tension that sample (16) is subject to, thus the accuracy of proof stress ring loaded load further.
For verifying the accuracy and reliability that this device loads, respectively foil gauge (10) is affixed on stress determination sample And the parallel-segment of sample (16) (9), it is designated as A1, A3 respectively, then sample is loaded, and real time record Foil gauge data, record A1 with A3 position stress, strain size consistent, illustrate sample (16) and stress survey Determine magnitude of load suffered by sample (9) consistent, meet this device design result.Its data are added with conventional NOL ring Load Data Comparison finds, uses NOL ring calibration curve gained assumed (specified) load little compared with real load, i.e. utilizes routine Real load on the be carried in sample of NOL ring calibration curve (16) is much larger than Design Theory load, conventional stress Ring loads and loads such as Fig. 4 with apparatus of the present invention, illustrates to be necessary to use this device to carry out loading and to often Rule NOL ring loading method is verified.
After determining loaded load size, reuse apparatus of the present invention and certain metal composite pipe is carried out stress corrosion resistant Experiment, loads 80% σ s, two kinds of stress levels of 100% σ s, concrete loading parameters such as table 2 respectively, passes through After 720 hours corrosion experiments, sample all ruptures, and does not also have crackle and surface damage, and sample is without bright The vestige of aobvious plastic deformation, illustrate through the amended loading method of the present invention be rational, also illustrated example 1 Why middle sample there is obvious Edge crystal crack and damage, and reason is that conventional NOL ring loading stress is excessive makes Become, relatively big experiment error occurs, and uses apparatus of the present invention experimental results accurately, reliably.
Table 1
Table 2
Should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention.In addition should Understanding, after having read the content that the present invention lectures, the present invention can be made various changing by those skilled in the art Moving or amendment, these equivalent form of values fall within the application appended claims limited range equally.

Claims (8)

1. a small sample constant load stress corrosion test device, it is characterised in that this device includes with lower component: displacement transducer (1), screw rod (2), standing screw (3), base (4), NOL ring (7), stress determination sample (9), corrosion testing chamber are loaded (12), sample (16) and test medium (17);
Described NOL ring (7) is fixed on base (4) by fixing nut (5) by standing screw (3), this NOL ring (7) Inside has corrosion testing chamber (12), and this corrosion testing chamber (12) is equipped with test medium (17) and sample (16), described fixing spiral shell The U-shaped clip end of bar (3) passes bottom the bottom of fixing sample (16), the described standing screw (3) in corrosion testing chamber (12) And there is between corrosion testing chamber (12) lower sealing ring (18);
Described loading screw rod (2) passes top and one end of stress determination sample (9) of NOL ring (7) by loading nut (6) Connecting, the other end of this stress determination sample (9) is U-shaped clip end, and the U-shaped clip end of described stress determination sample (9) is through corruption The top in corrosion test chamber (12) the top of fixing sample (16), have between described loading screw rod (2) and corrosion testing chamber (12) Having upper sealing ring (11), the size of described stress determination sample (9) is identical with sample (16), and at this stress determination sample (9) Middle part install foil gauge (10);
Described base (4) has a support, and this support is provided with displacement transducer (1), and this displacement transducer (1) is positioned at The top of NOL ring (7).
2. a kind of small sample constant load stress corrosion test device as claimed in claim 1, it is characterised in that described upper sealing ring (11) sealing ring (13) is installed and between lower sealing ring (18) and corrosion testing chamber (12);The U of described stress determination sample (9) The U-shaped clip end of type clip end and standing screw (3) is by the fixing sample (16) of pin (20).
3. a kind of small sample constant load stress corrosion test device as claimed in claim 2, it is characterised in that described stress determination Having insulation spacer (19) between U-shaped clip end and the U-shaped clip end of standing screw (3) and the sample (16) of sample (9), this is exhausted Edge pad (19) is politef material;Described loading screw rod (2), standing screw (3), fixing nut (5), load nut (6), NOL ring (7) and pin (20) are to be processed by the Hastelloy of decay resistance.
4. a kind of small sample constant load stress corrosion test device as claimed in claim 1, it is characterised in that described loading nut (6) and there is between NOL ring (7) rotation pad (8), this rotation pad (8) processed by the Hastelloy of decay resistance and Become.
5. a kind of small sample constant load stress corrosion test device as claimed in claim 1, it is characterised in that described corrosion testing Chamber (12) also has air inlet (14) and gas outlet (15).
6. a kind of small sample constant load stress corrosion test device as claimed in claim 1, it is characterised in that described sample (16) For flattened rectangular sample, its thickness is 0.9mm~2mm, and width is 3mm~5mm.
7. a kind of small sample constant load stress corrosion test device as claimed in claim 1, it is characterised in that described test medium (17) it is corrosive medium.
8. use the method that a kind of small sample constant load stress corrosion as claimed in claim 1 test device carries out corrosion test, It is characterized in that comprising the following steps:
Step one, according to required simulated field working condition contrived experiment corrosive medium, sample loaded load size;
Step 2, installs sample (16), by loading screw rod (2) loading stress, by displacement transducer (1) and foil gauge (10) Determine load;
Step 3, adds in corrosion experiment chamber (12) by corrosive medium, and air inlet (14), gas outlet (15) are respectively connecting to H2S、 CO2Or N2Gas cylinder and exhaust treatment system;
Step 4, after corrosive medium carries out abundant deoxygenation in corrosion experiment chamber (12), is passed through H2S or CO2Corrosive gas, during record Between start experiment, test period is 720h;
Step 5, after experiment terminates, carries out abundant deoxygenation, is unloaded by sample (16), observes whether sample ruptures and carry out crackle Detection, specimen surface erosion profile and corrosion product analysis.
CN201410147919.3A 2014-04-11 2014-04-11 A kind of small sample constant load stress corrosion test device and method of testing thereof CN103926146B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108896223A (en) * 2018-05-02 2018-11-27 中国工程物理研究院材料研究所 A kind of stress test clamping device

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* Cited by examiner, † Cited by third party
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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
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CN105973793B (en) * 2016-05-30 2019-01-18 中国科学院金属研究所 A kind of underground stress corrosion test method and device
CN106442282A (en) * 2016-08-31 2017-02-22 西安摩尔石油工程实验室股份有限公司 Constant load stress corrosion test device with load sensor
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CN109916737A (en) * 2019-03-04 2019-06-21 鞍钢股份有限公司 A method of test oil well pipe anti-stress corrosion performance
CN111426572A (en) * 2020-03-13 2020-07-17 天津大学 Constant-load stress corrosion on-line observation test device under hydrofluoric acid environment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101377461A (en) * 2007-08-28 2009-03-04 宝山钢铁股份有限公司 Apparatus and method for measuring welding tube corrosion under stress condition
CN101988879A (en) * 2009-08-04 2011-03-23 上海海隆石油管材研究所 Sulphide stress corrosion uniaxial tensile test loading detection method and monitoring system thereof
CN103506809A (en) * 2012-06-28 2014-01-15 宝山钢铁股份有限公司 Constant loading stress ring manufacturing method for high-temperature high-pressure environment containing poisonous and harmful gas

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01216228A (en) * 1988-02-24 1989-08-30 Toko Tesutatsuku:Kk Stress corrosion cracking testing machine
JP2007256123A (en) * 2006-03-23 2007-10-04 Inst Nuclear Energy Research Rocaec System used for stress corrosion cracking test

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101377461A (en) * 2007-08-28 2009-03-04 宝山钢铁股份有限公司 Apparatus and method for measuring welding tube corrosion under stress condition
CN101988879A (en) * 2009-08-04 2011-03-23 上海海隆石油管材研究所 Sulphide stress corrosion uniaxial tensile test loading detection method and monitoring system thereof
CN103506809A (en) * 2012-06-28 2014-01-15 宝山钢铁股份有限公司 Constant loading stress ring manufacturing method for high-temperature high-pressure environment containing poisonous and harmful gas

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
硫化物应力腐蚀开裂试验应力环载荷的测量及标定;黄仲婴 等;《理化检验-物理分册》;20100331;第46卷(第3期);183-185,192 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108896223A (en) * 2018-05-02 2018-11-27 中国工程物理研究院材料研究所 A kind of stress test clamping device

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