CN106970019A - A kind of hydrogen induced cracking (HIC) test fixture - Google Patents
A kind of hydrogen induced cracking (HIC) test fixture Download PDFInfo
- Publication number
- CN106970019A CN106970019A CN201710322277.XA CN201710322277A CN106970019A CN 106970019 A CN106970019 A CN 106970019A CN 201710322277 A CN201710322277 A CN 201710322277A CN 106970019 A CN106970019 A CN 106970019A
- Authority
- CN
- China
- Prior art keywords
- sliding block
- hic
- fixed sliding
- test fixture
- induced cracking
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000001257 hydrogen Substances 0.000 title claims abstract description 25
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 25
- 238000005336 cracking Methods 0.000 title claims abstract description 24
- 238000011068 loading method Methods 0.000 claims abstract description 31
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000004926 polymethyl methacrylate Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 229920005479 Lucite® Polymers 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 229920005439 Perspex® Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
Abstract
The invention discloses a kind of hydrogen induced cracking (HIC) test fixture, including loading bar and fixed sliding block, the two ends of the loading bar are respectively first baffle and second baffle, the loading bar is along its length provided with projection, the bottom of the fixed sliding block is provided with groove, fixed sliding block is slidably connected by the cooperation of groove and projection with loading bar, the raised length is more than the length of groove, the present invention is cooperated by loading bar and fixed sliding block, it can prevent that sample is toppled in experimentation, and separated sample by fixed sliding block, and slide fixed sliding block to place various sizes of sample；Hydrogen induced cracking (HIC) test fixture of the present invention also includes layering vent board, is layered the design of vent board and can place more samples in once testing, so as to save experimentation cost.
Description
Technical field:
The invention belongs to chemical industry equipment technical field, and in particular to a kind of to cause to open for the hydrogen that hydrogen sulfide corrosion is tested
Split test fixture.
Background technology:
Because the pumped (conveying) medium of oil pipeline contains H2S and acidic materials are more, and corrosion is to influence pipe-line system reliable and the longevity
The key factor of life, H2The corrosion failure that S is caused is one of principal mode of corrosive pipeline destruction.Because hydrogen induced cracking (HIC) is to oil gas
The harm of pipeline is huge, in order to suppress H 2 S stress corrosion to greatest extent, reduces the generation of accident, domestic many researchers
Substantial amounts of research has been carried out in terms of resistance against hydrogen cracking performance, corrosion mechanism to steel, meanwhile, domestic many large-scale steel enterprises
Industry and pipe enterprise have also built up hydrogen sulfide corrosion laboratory one after another, but the ununified mark of the fixture in hydrogen induced cracking (HIC) experiment
Standard, so constituent parts have also spent substantial amounts of energy and time design hydrogen induced cracking (HIC) test fixture.
Required to meet according to NACE TM0284-2011 standards, existing test fixture is：Perspex bar and glass
Rod etc., sample is directly put on glass bar or perspex bar, although simple to operate, but in process of the test, sample holds
Easily slid from glass bar, cause sample contacts face beyond standard requirement, cause influence result of the test.
The content of the invention：
It is an object of the invention to provide a kind of hydrogen induced cracking (HIC) test fixture, the fixture can not only guarantee test sample will not
Slide, and can Reusability；Experimentation cost can also be saved by being tested using the fixture.
The technical solution adopted by the present invention is：A kind of hydrogen induced cracking (HIC) test fixture, including loading bar and fixed sliding block, it is described
The two ends of loading bar are respectively first baffle and second baffle, and the loading bar is described fixed sliding along its length provided with projection
The bottom of block is provided with groove, and fixed sliding block is slidably connected by the cooperation of groove and projection with loading bar, the raised length
More than the length of groove.
Above-mentioned hydrogen induced cracking (HIC) test fixture also includes uniformly being provided with ventilation on layering vent board, the layering vent board
Hole.
The centre position of above-mentioned loading bar is provided with third baffle.
Above-mentioned loading bar and fixed sliding block are constituted by polytetrafluoroethylene (PTFE), and above-mentioned layering vent board is transparent organic glass.
Beneficial effects of the present invention：
1st, hydrogen induced cracking (HIC) test fixture of the present invention is cooperated by loading bar and fixed sliding block, can prevent experimentation
Middle sample is toppled over, and is separated sample by fixed sliding block, and slides fixed sliding block to place various sizes of sample.
2nd, hydrogen induced cracking (HIC) test fixture of the present invention also includes layering vent board, and the design of layering vent board can tried once
The middle more samples of placement are tested, so as to save experimentation cost.
3rd, loading bar of the invention and fixed sliding block use polytetrafluoroethylene (PTFE), and layering vent board uses lucite, poly- four
PVF and lucite have good decay resistance, add loading bar, fixed sliding block and the use for being layered vent board
Life-span.
Brief description of the drawings：
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 loads the front view of bar for the present invention.
Fig. 2 loads the top view of bar for the present invention.
Fig. 3 is Fig. 1 sectional view.
Fig. 4 fixes the front view of sliding block for the present invention.
Fig. 5 fixes the top view of sliding block for the present invention.
The schematic diagram that Fig. 6 uses cooperatively for present invention loading bar and fixed sliding block.
Fig. 7 is layered the structure chart of vent board for the present invention.
Fig. 8 present invention uses the schematic diagram after assembling in test chamber.
Description of reference numerals：1- loads bar, and 2- fixes sliding block, 3- layering vent boards, 4- samples, 5- air inlet pipe, 6- exhausts
Pipe, 11- first baffles, 12- second baffles, 13- is raised, 14 third baffles, 21 grooves, 31- passages.
Embodiment：
It is as Figure 1-5 a kind of hydrogen induced cracking (HIC) test fixture of the present invention, including loading bar 1 and fixed sliding block 2, it is described
The two ends of loading bar 1 are respectively first baffle 11 and second baffle 12, and the loading bar 1 is along its length provided with projection 13；Institute
The bottom for stating fixed sliding block 2 is provided with groove 21, and fixed sliding block 2 is slided by the cooperation of groove 21 and projection 13 with loading bar 1 to be connected
Connect, raised 13 length is more than the length of groove 21.
The size of the hydrogen induced cracking (HIC) test fixture of the present invention is determined according to the size of experiment container.As shown in fig. 6, examination
Taking two suitable dimensions to load before testing, bar 1 is parallel to be put into hydrogen induced cracking (HIC) test chamber, and multiple samples 4 then are placed on into two
In the projection 13 of individual loading bar 1, and each sample 4 is separated by sliding fixed sliding block 2, while further fixing sample
4 position.
In the case that the quantity of sample 4 is excessive, hydrogen induced cracking (HIC) test fixture of the present invention also includes layering vent board 3, layering
Uniformly passage 31 is provided with vent board 3.According to the size of experiment container, currently preferred layering vent board 3 is circle,
It is preferred that passage 31 be also circular (as shown in Figure 7)., can be in two loadings after sample 4 is piled on above-mentioned two loading bar 1
The layering vent board 3 is placed on bar 1, is then placed in the loading bar 1 for carrying out the second layer, the like, until piling container energy
The sample size (as shown in Figure 8) of receiving.To make layering vent board 3 is more firm to be placed on loading bar, the present invention is in loading
The centre position of bar is provided with third baffle 14.
After the completion of sample is placed, sample container top cover is covered, is ventilated by air inlet pipe 5, the discharge gas of blast pipe 6 starts examination
Test.Observation experiment situation, of the invention to load bar and fix the material of sliding block for polytetrafluoroethylene (PTFE) for convenience, is layered vent board and adopts
With transparent organic glass, polytetrafluoroethylene (PTFE) and lucite have good decay resistance, add loading bar, fixed sliding block
With the service life of layering vent board.
Claims (5)
1. a kind of hydrogen induced cracking (HIC) test fixture, it is characterised in that：The hydrogen induced cracking (HIC) test fixture includes loading bar (1) and fixed
Sliding block (2), the two ends of the loading bar (1) are respectively first baffle (11) and second baffle (12), and the bar (1) that loads is along length
Spend direction to be provided with raised (13), the bottom of the fixed sliding block (2) is provided with groove (21), and fixed sliding block (2) passes through groove (21)
Cooperation with raised (13) is slidably connected with loading bar (1)；The length of the projection (13) is more than the length of groove (21).
2. a kind of hydrogen induced cracking (HIC) test fixture according to claim 1, it is characterised in that：The hydrogen induced cracking (HIC) test fixture
Also include uniformly being provided with passage (31) on layering vent board (3), layering vent board (3).
3. a kind of hydrogen induced cracking (HIC) test fixture according to claim 1 or 2, it is characterised in that：In the loading bar (1)
Meta has installed third baffle (14).
4. a kind of hydrogen induced cracking (HIC) test fixture according to claim 1 or 2, it is characterised in that：It is described state loading bar (1) and
Fixed sliding block (2) constitutes by polytetrafluoroethylene (PTFE).
5. a kind of hydrogen induced cracking (HIC) test fixture according to claim 2, it is characterised in that：It is described layering vent board (3) be
Transparent organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322277.XA CN106970019A (en) | 2017-05-09 | 2017-05-09 | A kind of hydrogen induced cracking (HIC) test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322277.XA CN106970019A (en) | 2017-05-09 | 2017-05-09 | A kind of hydrogen induced cracking (HIC) test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106970019A true CN106970019A (en) | 2017-07-21 |
Family
ID=59331631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710322277.XA Pending CN106970019A (en) | 2017-05-09 | 2017-05-09 | A kind of hydrogen induced cracking (HIC) test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106970019A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110136239A1 (en) * | 2009-12-08 | 2011-06-09 | National Oilwell Varco, L.P. | Corrosion testing apparatus and methods |
| CN202267644U (en) * | 2011-08-25 | 2012-06-06 | 南京钢铁股份有限公司 | Reactive tank for hydrogen induced cracking experiment |
| CN202660920U (en) * | 2012-04-28 | 2013-01-09 | 河北钢铁集团有限公司 | Thin belt steel sample frame used for high-temperature atmosphere tube-type heat treatment furnace |
| CN202814787U (en) * | 2012-09-11 | 2013-03-20 | 华中科技大学 | Clamping device and shear splitting device for shear splitting test |
| CN103207141A (en) * | 2013-03-21 | 2013-07-17 | 宝鸡石油钢管有限责任公司 | Hydrogen sulfide resistant stress corrosion cracking and bending test device |
| CN205449646U (en) * | 2015-12-30 | 2016-08-10 | 中国石油天然气集团公司 | Spring extensometer cantilever bar positioner and spring extensometer |
| CN206740609U (en) * | 2017-05-09 | 2017-12-12 | 中国石油天然气集团公司 | A kind of hydrogen induced cracking (HIC) test fixture |
-
2017
- 2017-05-09 CN CN201710322277.XA patent/CN106970019A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110136239A1 (en) * | 2009-12-08 | 2011-06-09 | National Oilwell Varco, L.P. | Corrosion testing apparatus and methods |
| CN202267644U (en) * | 2011-08-25 | 2012-06-06 | 南京钢铁股份有限公司 | Reactive tank for hydrogen induced cracking experiment |
| CN202660920U (en) * | 2012-04-28 | 2013-01-09 | 河北钢铁集团有限公司 | Thin belt steel sample frame used for high-temperature atmosphere tube-type heat treatment furnace |
| CN202814787U (en) * | 2012-09-11 | 2013-03-20 | 华中科技大学 | Clamping device and shear splitting device for shear splitting test |
| CN103207141A (en) * | 2013-03-21 | 2013-07-17 | 宝鸡石油钢管有限责任公司 | Hydrogen sulfide resistant stress corrosion cracking and bending test device |
| CN205449646U (en) * | 2015-12-30 | 2016-08-10 | 中国石油天然气集团公司 | Spring extensometer cantilever bar positioner and spring extensometer |
| CN206740609U (en) * | 2017-05-09 | 2017-12-12 | 中国石油天然气集团公司 | A kind of hydrogen induced cracking (HIC) test fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |