CN201662499U - Measuring device for hydrogen-induced crack of steels - Google Patents
Measuring device for hydrogen-induced crack of steels Download PDFInfo
- Publication number
- CN201662499U CN201662499U CN2010201182108U CN201020118210U CN201662499U CN 201662499 U CN201662499 U CN 201662499U CN 2010201182108 U CN2010201182108 U CN 2010201182108U CN 201020118210 U CN201020118210 U CN 201020118210U CN 201662499 U CN201662499 U CN 201662499U
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- Prior art keywords
- pipeline
- gas
- hydrogen
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- measurement mechanism
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- 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
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
-
- 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
- G01N17/002—Test chambers
Abstract
The utility model relates to a measuring device for hydrogen-induced crack of steels, comprising a gas supply part, a measuring trough, a pressure-stabilizing trough and a neutralizing tank, wherein the gas supply part is filled with hydrogen sulfide; the measuring trough is internally contained experimental steels and acid solution, and leads the hydrogen sulfide to flow into and be saturated inside the acid solution by a first pipeline connected with the gas supply part; the pressure-stabilizing trough is connected with the measuring trough by a second pipeline, thus leading the gas saturated in the measuring trough to flow in, and being provided with an open and close valve at one side; the neutralizing tank is internally provided with sodium hydroxide solution, and connected with the pressure-stabilizing trough by a third pipeline, thus leading the gas in the pressure-stabilizing trough to flow in and be saturated in the sodium hydroxide solution, and being provided with a fourth pipeline at one side; and the fourth pipeline is connected with a scrubber. A plurality of test pieces are arranged in a constant-temperature trough maintaining a certain temperature, thus being capable of maintaining uniform measuring environment, reducing measurement error to the maximum extent, and obtaining more accurate measuring values.
Description
Technical field
The utility model relates to hydrogen induced cracking (the Hydrogen Induced Cracking of steel, HIC) measurement mechanism, especially for measuring the splitting resistance of qualitative factor that API (American Petroleum Institute) steel etc. are used for the steel of oil oil transportation steel pipe, the steel that will be soaked in artificial seawater (or suitable solution) are exposed to after the environment of hydrogenation for a long time, measure the degree that the steel interior tissue cracks, with the hydrogen induced cracking measurement mechanism of the steel of the quality grade of decision steel.
Background technology
Generally speaking, petroleum pipeline is for transporting a kind of method of oil at a distance, most ofly be made with steel, and the steel that are mainly used in petroleum pipeline is referred to as API (American Petroleum Institute) steel.
The API steel need possess chemical resistance because of the singularity of its environment for use, especially to hydrogen or sulfuretted hydrogen (H
2S) repellence is eager to excel, and therefore needs to measure by suitable method the corrosion resistivity or the splitting resistance of steel, to determine its quality.
A kind of as the splitting resistance measuring method of steel has the hydrogen induced cracking measuring method, when it is measured steel are exposed to moistening sour environment for a long time, is present in the crackle that hydrogen caused of steel inside.
The hydrogen induced cracking measurement is sheet metal to be soaked under the state of seawater, continues supply hydrogen (H
2) or sulfuretted hydrogen (H
2S) time, because of corroding the organization internal that the hydrogen atom that is produced infiltrates into the test film steel, the engineering properties that causes organizing changes and the crackle of generation, and up to the present the steel hydrogen induced cracking measurement mechanism of Korea S fails to realize robotization, and there is not to make continuously in a large number the equipment of test film, can not successfully determine the quality of steel, be difficult to quality assessment is carried out in a large amount of productions of API steel.
The utility model content
Therefore, the purpose of this utility model is to provide a kind of hydrogen induced cracking measurement mechanism of steel, can finish the hydrogen induced cracking of steel continuously and measure, and can measure a large amount of test films simultaneously on a crackle measurement mechanism.
Another purpose of the present utility model is, a kind of hydrogen induced cracking measurement mechanism of steel is provided, and can keep uniform hydrogen induced cracking measurement environment, reduces measuring error to greatest extent.
The purpose of this utility model is achieved in that a kind of hydrogen induced cracking measurement mechanism of steel, comprising: gas supply department 10 is filled with sulfuretted hydrogen; Measuring flume 20, inner ccontaining experiment steel S and acid solution, by first pipeline 51 that is connected with above-mentioned gas supply department 10, it is also saturated in above-mentioned acid solution inside that sulfuretted hydrogen is flowed into; Pressure stabilizing tank 30 is connected with above-mentioned measuring flume 20 by second pipeline 52, thereby saturated gas in measuring flume is flowed into, and possesses open and close valve 32 in a side; Neutralization chamber 40, inner ccontaining sodium hydroxide solution is connected with above-mentioned pressure stabilizing tank 30 by the 3rd pipeline 53, thus it is also saturated in above-mentioned sodium hydroxide solution inside that the pressure stabilizing tank internal gas is flowed into, and have the 4th pipeline 54 that is connected with scrubber in a side.
Further, a plurality of described measuring flumes 20 are set, and the above-mentioned pressure stabilizing tank 30 corresponding to described each measuring flume 20 quantity is set, and connect by second pipeline.
Further, described measuring flume 20 places in the calibration cell 111 that is provided with thermostat 110 for keeping certain temperature.
Further, the internal temperature of described calibration cell 111 is 22～28 ℃.
Further, described gas supply department 10 possesses a plurality of gas cylinders that are provided with air valve, and adheres to pressure transducer at described first pipeline 51, thereby opens in above-mentioned a plurality of gas cylinder one according to pressure sensor signal, realizes the without interruption of sulfuretted hydrogen.
Further, described gas supply department 10, can be divided into a plurality of first group of gas cylinder 10a, the 10b that are used to supply hydrogen sulfide gas, and be used to provide a plurality of second group of gas cylinder 10c, 10d of nitrogen, and on each group pipeline, be provided for the flowmeter of pilot-gas supply.
Further, for changing described neutralization chamber 40 inner content, possess vent pipe 42 and inflow pipe 44.
Further, on described pressure stabilizing tank 30, the pore 31 that supplied gas is come in and gone out is set.
Further, described measuring flume 20 is made by glass material.
The utlity model has following effect:
1, because of a plurality of test films are arranged at the calibration cell of keeping uniform temperature, thereby can keep uniform measurement environment, reduce measuring error to greatest extent, obtain measured value more accurately.
2, prepare a plurality of sulfuretted hydrogen (H
2S) hold-up vessel, changing automatically according to pressure, change is provided with sulfuretted hydrogen (H
2S) supply line of hold-up vessel is kept stable sulfuretted hydrogen (H
2S) supply is finished correct measurement.
3, because of between measuring flume and neutralization chamber, pressure stabilizing tank being set, therefore not only can in measuring the way, change the aqueous solution of neutralization chamber, and because of the pressure that not have to change when making solution changes, thereby need not to interrupt measurement, stable measurement environment is created in the realization continuous coverage.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the hydrogen induced cracking measurement mechanism of the utility model embodiment steel;
Fig. 2 is the main part structural representation of the hydrogen induced cracking measurement mechanism of the utility model embodiment steel;
Fig. 3 is the gas Supply Structure synoptic diagram of the hydrogen induced cracking measurement mechanism of another embodiment steel of the utility model.
Embodiment
Below, preferred embodiment is elaborated to the utility model in conjunction with the accompanying drawings, and accompanying drawing just illustrates an example of the present utility model, and unrestricted the utility model.
Fig. 1 is the one-piece construction synoptic diagram of the hydrogen induced cracking measurement mechanism of the utility model embodiment steel; Fig. 2 is the main part structural representation of the hydrogen induced cracking measurement mechanism of the utility model embodiment steel; Fig. 3 is the gas Supply Structure synoptic diagram of the hydrogen induced cracking measurement mechanism of another embodiment steel of the utility model.
As Fig. 1-shown in Figure 2, measurement mechanism of the present utility model comprises: gas supply department 10 is filled with sulfuretted hydrogen (H
2S); Measuring flume 20, inner ccontaining experiment steel S and acid solution, first pipeline 51 by being connected with above-mentioned gas supply department 10 makes sulfuretted hydrogen (H
2S) inflow and saturated in above-mentioned acid solution inside; Pressure stabilizing tank 30 is connected with above-mentioned measuring flume 20 by second pipeline 52, thereby saturated gas in measuring flume is flowed into, and possesses open and close valve 32 in a side; Neutralization chamber 40, inner ccontaining NaOH (NaOH) solution, be connected with above-mentioned pressure stabilizing tank 30 by the 3rd pipeline 53, thereby it is also saturated in above-mentioned NaOH (NaOH) solution inside that the pressure stabilizing tank internal gas is flowed into, and have the 4th pipeline 54 that is connected with scrubber (scrubber) in a side.
In preferred embodiment, above-mentioned gas supply department 10 possesses a plurality of gas cylinders of being provided with air valve and adheres to pressure transducer at above-mentioned first pipeline 51, thereby opens certain air valve on above-mentioned a plurality of gas cylinder according to pressure transducer, realizes sulfuretted hydrogen (H
2S) without interruption, and consider that steel test portion S in the measuring flume 20 is by continuous coverage 96～720 hours, for a long time by a certain amount of gas without interruption, to reduce the crackle measuring error to greatest extent.
As supply sulfuretted hydrogen (H
2S) gas example without interruption, as shown in Figure 1, gas supply department 10 possesses the first gas cylinder 10a and the second gas cylinder 10b, and the first air valve 11a and the second air valve 11b are set on each gas cylinder, and with first pipeline 51 that above-mentioned each gas cylinder 10a, 10b are connected on adhere to pressure transducer 12, thereby make sulfuretted hydrogen (H
2S) gas is supplied in above-mentioned each gas cylinder one.
Above-mentioned pressure transducer 12 is measured the sulfuretted hydrogen (H that flows by first pipeline 51
2S) the handover pressure of gas, and, then control the switching of air valve if transferring pressure drops to below the certain value.
That is, supplying sulfuretted hydrogen (H to the first gas cylinder 10a
2S) in the process of gas, if the measured value of pressure transducer 12 drops to below the certain value, then by opening the second air valve 11b supply sulfuretted hydrogen (H of the second gas cylinder 10b
2S), realize gas supply for a long time continuously.
As shown in Figure 2, at above-mentioned measuring flume 20 inner ccontaining acid solutions, and above-mentioned steel test portion S is soaked in the acid solution, and the sulfuretted hydrogen (H that flows into by first pipeline 51
2S) gas is saturated in acid solution bottom and rising.
This is in moistening sour environment, create the condition that makes hydrogen atom infiltrate into steel test portion S organization internal, and above-mentioned solution adopts the suitable solution of artificial seawater or regulation.
In addition, preferably, above-mentioned measuring flume 20 is made by glass material.Synthetic resin such as FRP, PCV, acryl resin because of unsound characteristics of its material structure and gas penetration potential, thereby can change the characteristic of the testing liquid in the measuring flume 20, dissolved oxygen DO for example, or can react with solution, cause the error of measuring.On the contrary, glass material is because of its dense structure, and gas is difficult to see through, and difficult reacts with solution, thereby does not change the characteristic of the testing liquid that is placed in inside.
Above-mentioned pressure stabilizing tank 30, poor by eliminating above-mentioned measuring flume 20 internal pressures and above-mentioned neutralization chamber 40 pressure inside, keep identical pressure, on the pore 31 that is arranged at pressure stabilizing tank 30 as gas passage, pore valve 32 is set, and in the content below its effect is elaborated.
Consider and measure used sulfuretted hydrogen (H
2S) have toxicity, the effect of above-mentioned neutralization chamber 40 is the above-mentioned sulfuretted hydrogen of neutralization, and portion is equipped with NaOH (NaOH) within it.
In addition, in neutralization chamber 40 bottoms, when connection possessed the vent pipe 42 of exhaust valve 43, the one side connected the inflow pipe 44 that possesses inflow valve 45, finishes the replacing of NaOH (NaOH).
Below, in conjunction with Fig. 2 the crackle measuring sequence of steel is described, and will understands the structure and the characteristics of the utility model measurement mechanism 100 by following explanation better.
Sulfuretted hydrogen (H by 51 inflows of first pipeline
2S) saturated in measuring flume 20 acid solution and with after steel test portion S contacts, move to pressure stabilizing tank 30 by second pipeline 52.
At this moment, be exposed to sulfuretted hydrogen (H
2S) the steel test portion S of gas infiltrates into the test portion interior tissue with hydrogen atom and cracks, and determines steel product quality according to the generation degree of crackle, and its standard and method and aim of the present utility model are irrelevant, therefore do not repeat them here.
Flow into the sulfuretted hydrogen (H of above-mentioned pressure stabilizing tank 30
2S) gas is saturated to NaOH (NaOH) solution inside in the neutralization chamber 40 by the 3rd pipeline 53, at this moment, and by NaOH (NaOH) solution and sulfuretted hydrogen (H
2S) reaction of gas generates sodium hydrosulfide aqueous solution in that neutralization chamber 40 is inner, and residual gas is transferred to after scrubbing plant (not shown) cleans by the 4th pipeline 54, is expelled in the atmosphere.
At this moment, above-mentioned measuring flume 20 internal environments need be maintained until till the measurement end of test portion S, but the NaOH (NaOH) in the neutralization chamber 40 is because of continuing and sulfuretted hydrogen (H
2S) react, thereby its attribute will go bad, neutralising capacity descends, therefore through needing to change NaOH (NaOH) solution after the certain hour.And this moment, the sodium hydrosulfide aqueous solution that can discharge as resultant of reaction by aforesaid vent pipe 42, and by new NaOH (NaOH) solution of inflow pipe 44 fillings.
In above-mentioned replacing process, neutralization chamber 40 internal pressures may change, and the variation of above-mentioned pressure will cause measuring flume 20 pressure inside to change, and deal with improperly and can bring a lot of errors to measurement result.
Therefore, in the utility model,, can change, can keep certain pressure mutually by the pressure of buffering measuring flume 20 and neutralization chamber 40 if between measuring flume 20 and neutralization chamber 40, pressure stabilizing tank 30 is set.For example, when opening exhaust valve 43 and flowing into valve 45 for changing neutralization chamber 40 interior NaOH (NaOH) solution, if together open the pore valve 32 of above-mentioned pressure stabilizing tank 30, even then the variation with the ccontaining amount of sodium hydroxide solution in the neutralization chamber 40 causes internal pressure to change, also the pore 31 because of pressure stabilizing tank 30 is in open mode, by the inflow of extraneous air or the discharge of inner air, buffering pressure stabilizing tank 30 internal pressures, prevent that the pressure in the measuring flume 20 from changing, thereby keep the certain pressure in the measuring flume 20, reduce the crackle measuring error of steel to greatest extent.
In addition, as shown in Figure 1, can measure a plurality of test portion S simultaneously successively, and according to the quantity that is provided with of measuring flume 20, be provided with the pressure stabilizing tank 30 of respective numbers this moment by a plurality of above-mentioned measuring flumes 20 are set.
Promptly, as shown in Figure 3, when if three measuring flume 20a, 20b, 20c are set, three pressure stabilizing tanks correspondingly also are set, and this moment, between the first measuring flume 20a and the first pressure stabilizing tank 30a, between the second measuring flume 20b and the second pressure stabilizing tank 30b and between the 3rd measuring flume 20c and the 3rd pressure stabilizing tank 30c, all by 52 connections of second pipeline, and above-mentioned each pressure stabilizing tank 30a, 30b, 30c can be connected with a neutralization chamber 40.
Reduce the embodiment of measuring error to greatest extent, in the process of measuring, preferably, measuring flume 20 is kept the uniform temperature condition.For this reason, as shown in Figure 1, above-mentioned measuring flume 20 places in the calibration cell 111 that is provided with thermostat 110, and above-mentioned thermostat 110 can be kept the uniform temperature of calibration cell 111 inside.
Certainly, the media of keeping above-mentioned calibration cell 111 internal temperatures can be air or water or other fluid, consider purposes of the present utility model, preferably, adopt the less fluid of rate of temperature change, for this reason, measuring flume 20 is kept and is soaked in the calibration cell 111 that is filled with as the water of fluid, and calibration cell 111 temperature inside that above-mentioned thermostat 110 is kept are preferably 22～28 ℃.
Fig. 3 is the gas Supply Structure synoptic diagram of the hydrogen induced cracking measurement mechanism of another embodiment steel of the utility model.
As shown in Figure 3, above-mentioned gas supply department 10 can be divided into and be used to supply sulfuretted hydrogen (H
2S) a plurality of first group of gas cylinder 10a, 10b of gas, and be used to provide nitrogen (N
2) a plurality of second group of gas cylinder 10c, 10d, and fill above-mentioned nitrogen (N
2) gas cylinder 10c, 10d also respectively possess air valve 11c, 11d, and for optionally open and close each air valve 11c, 11d, possess second group of pressure transducer 12 being used for gaging pressure '.
In addition, according to another embodiment of the utility model, above-mentioned gas supply department 10 possesses the first flow meter 13 of the gas supply that is used to control above-mentioned first group of gas cylinder 10a, 10b, and be used to control second flowmeter 13 of the gas supply of second group of gas cylinder 10c, 10d '.
At the above-mentioned sulfuretted hydrogen (H of supply
2S) before the gas, by supplying above-mentioned nitrogen (N
2) gas, remove the dissolved oxygen DO of measuring flume inside and each pipeline inside, utilize sulfuretted hydrogen (H more accurately
2S) gasmetry crackle.
For this reason, at first, by opening second flowmeter, 13 ' the supply of nitrogen (N
2) afterwards, close second flowmeter 13 ' and open first flow meter 13, supply sulfuretted hydrogen (H
2S) gas.
Above-mentioned description taken in conjunction accompanying drawing is only unrestricted in order to explanation the utility model preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment, be out of shape the utility model or be equal to replacement, and not breaking away from spirit and scope of the present utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (9)
1. the hydrogen induced cracking measurement mechanism of steel is characterized in that, comprising: gas supply department (10) is filled with sulfuretted hydrogen; Measuring flume (20), inner ccontaining experiment steel (S) and acid solution, by first pipeline (51) that is connected with above-mentioned gas supply department (10), it is also saturated in above-mentioned acid solution inside that sulfuretted hydrogen is flowed into; Pressure stabilizing tank (30) is connected with above-mentioned measuring flume (20) by second pipeline (52), thereby saturated gas in measuring flume is flowed into, and possesses open and close valve (32) in a side; Neutralization chamber (40), inner ccontaining sodium hydroxide solution, be connected with above-mentioned pressure stabilizing tank (30) by the 3rd pipeline (53), the pressure stabilizing tank internal gas flows into and is saturated in above-mentioned sodium hydroxide solution inside, and has the 4th pipeline (54) that is connected with scrubber in a side.
2. hydrogen induced cracking measurement mechanism according to claim 1 is characterized in that, a plurality of described measuring flumes (20) are set, and the above-mentioned pressure stabilizing tank (30) corresponding to described each measuring flume (20) quantity is set, and connects by second pipeline.
3. hydrogen induced cracking measurement mechanism according to claim 1 and 2 is characterized in that, described measuring flume (20) places in the calibration cell (111) that is provided with thermostat (110) for keeping certain temperature.
4. hydrogen induced cracking measurement mechanism according to claim 3 is characterized in that, the internal temperature of described calibration cell (111) is 22～28 ℃.
5. hydrogen induced cracking measurement mechanism according to claim 1, it is characterized in that, described gas supply department (10), possess a plurality of gas cylinders that are provided with air valve, and adhere to pressure transducer at described first pipeline (51), thereby open in above-mentioned a plurality of gas cylinder one according to pressure sensor signal, realize the without interruption of sulfuretted hydrogen.
6. hydrogen induced cracking measurement mechanism according to claim 1, it is characterized in that, described gas supply department (10), can be divided into a plurality of first group of gas cylinder (10a), the first group of gas cylinder (10b) that are used to supply hydrogen sulfide gas, and be used to provide a plurality of second group of gas cylinder (10c), second group of gas cylinder (10d) of nitrogen, and on each group pipeline, be provided for the flowmeter of pilot-gas supply.
7. hydrogen induced cracking measurement mechanism according to claim 1 and 2 is characterized in that, for changing the inner content of described neutralization chamber (40), possesses vent pipe (42) and inflow pipe (44).
8. hydrogen induced cracking measurement mechanism according to claim 1 and 2 is characterized in that, on described pressure stabilizing tank (30), the pore (31) that supplied gas is come in and gone out is set.
9. hydrogen induced cracking measurement mechanism according to claim 1 and 2 is characterized in that, described measuring flume (20) is made by glass material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020090010579U KR200458466Y1 (en) | 2009-08-14 | 2009-08-14 | Measuring device for the hydrogen induced cracking of steel meterials |
| KR20-2009-0010579 | 2009-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662499U true CN201662499U (en) | 2010-12-01 |
Family
ID=43232918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201182108U Expired - Lifetime CN201662499U (en) | 2009-08-14 | 2010-02-11 | Measuring device for hydrogen-induced crack of steels |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR200458466Y1 (en) |
| CN (1) | CN201662499U (en) |
Cited By (7)
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| CN103411876A (en) * | 2013-08-16 | 2013-11-27 | 山东方圆建筑工程检测中心 | Device for alkali resistance test on alkali-resistant glass fiber gridding cloth |
| CN103868811A (en) * | 2014-03-13 | 2014-06-18 | 上海海隆石油钻具有限公司 | Hydrogen sulfide concentration control device for sulfide stress corrosion uniaxial tensile test |
| CN104330349A (en) * | 2014-10-17 | 2015-02-04 | 江阴利鑫环保科技有限公司 | Hydrogen induced crack (HIC) test device |
| CN105277480A (en) * | 2015-09-25 | 2016-01-27 | 宝鸡石油钢管有限责任公司 | Coal gas conveyer pipe full-scale test evaluation method |
| CN107727559A (en) * | 2017-09-12 | 2018-02-23 | 合肥通用机械研究院 | A kind of corrosion testing apparatus and the method using the device |
| CN110333331A (en) * | 2019-06-24 | 2019-10-15 | 江阴兴澄特种钢铁有限公司 | The evaluation method of metal material resistance to HIC test validity |
| CN110514356A (en) * | 2019-09-09 | 2019-11-29 | 乐绪枝 | A kind of oil pipeline crack detection equipment |
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| KR101480819B1 (en) * | 2013-08-20 | 2015-01-14 | 한국지질자원연구원 | High-pressure reaction and curing apparatus providing crack-free samples while pressure reduction |
| KR102137066B1 (en) * | 2015-11-27 | 2020-07-23 | 제이에프이 스틸 가부시키가이샤 | Method and apparatus for measuring hydrogen-induced cracking |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920004923Y1 (en) * | 1990-05-24 | 1992-07-23 | 포항종합제철주식회사 | A cracking tester |
| KR100620863B1 (en) * | 2003-01-15 | 2006-09-13 | 한국생산기술연구원 | Device of testing the deflection, stress and destruens of sulfide |
-
2009
- 2009-08-14 KR KR2020090010579U patent/KR200458466Y1/en active IP Right Grant
-
2010
- 2010-02-11 CN CN2010201182108U patent/CN201662499U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103411876A (en) * | 2013-08-16 | 2013-11-27 | 山东方圆建筑工程检测中心 | Device for alkali resistance test on alkali-resistant glass fiber gridding cloth |
| CN103411876B (en) * | 2013-08-16 | 2015-12-09 | 山东方圆建筑工程检测中心 | A kind of alkali resistant fiberglass gridding cloth alkali resistance test device |
| CN103868811A (en) * | 2014-03-13 | 2014-06-18 | 上海海隆石油钻具有限公司 | Hydrogen sulfide concentration control device for sulfide stress corrosion uniaxial tensile test |
| CN104330349A (en) * | 2014-10-17 | 2015-02-04 | 江阴利鑫环保科技有限公司 | Hydrogen induced crack (HIC) test device |
| CN105277480A (en) * | 2015-09-25 | 2016-01-27 | 宝鸡石油钢管有限责任公司 | Coal gas conveyer pipe full-scale test evaluation method |
| CN105277480B (en) * | 2015-09-25 | 2018-04-03 | 宝鸡石油钢管有限责任公司 | A kind of coal gas delivery pipe full-scale test evaluation method |
| CN107727559A (en) * | 2017-09-12 | 2018-02-23 | 合肥通用机械研究院 | A kind of corrosion testing apparatus and the method using the device |
| CN110333331A (en) * | 2019-06-24 | 2019-10-15 | 江阴兴澄特种钢铁有限公司 | The evaluation method of metal material resistance to HIC test validity |
| CN110514356A (en) * | 2019-09-09 | 2019-11-29 | 乐绪枝 | A kind of oil pipeline crack detection equipment |
| CN110514356B (en) * | 2019-09-09 | 2020-11-24 | 绩溪智旭智能化技术开发有限公司 | Oil pipeline crack detection equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110001751U (en) | 2011-02-22 |
| KR200458466Y1 (en) | 2012-02-21 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20101201 |