CN112748062A - Device and method for detecting hydrogen-induced cracking resistance of metal material - Google Patents

Device and method for detecting hydrogen-induced cracking resistance of metal material Download PDF

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Publication number
CN112748062A
CN112748062A CN202011588819.6A CN202011588819A CN112748062A CN 112748062 A CN112748062 A CN 112748062A CN 202011588819 A CN202011588819 A CN 202011588819A CN 112748062 A CN112748062 A CN 112748062A
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hydrogen
metal material
induced cracking
box body
cracking resistance
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李�瑞
雒国强
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Jiangsu Rongda Material Corrosion Inspection Co ltd
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Jiangsu Rongda Material Corrosion Inspection Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/002Test chambers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/006Investigating resistance of materials to the weather, to corrosion, or to light of metals
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/91Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink

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  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

The invention discloses a device and a method for detecting hydrogen induced cracking resistance of a metal material, and relates to the technical field of metal material detection. The invention relates to a detection device and a detection method for hydrogen induced cracking resistance of a metal material, which can well observe the environment in a test device through a control device, are convenient to record and compare, are added with a timing function, can more accurately control the test duration and reduce the test pressure of workers, process a sample through a detection assembly, and can help a fluorescent agent sprayer to perform penetration flaw detection and crack length detection after the sample is subjected to hydrogen induced cracking.

Description

Device and method for detecting hydrogen-induced cracking resistance of metal material
Technical Field
The invention relates to the technical field of metal material detection, in particular to a device and a method for detecting hydrogen-induced cracking resistance of a metal material.
Background
Hydrogen sulfide is one of the most corrosive harmful media in petroleum and natural gas, and the stress corrosion of the hydrogen sulfide to a transmission pipeline accounts for a large proportion in the process of conveying the natural gas. When used in a wet hydrogen sulfide environment, hydrogen bubbling, hydrogen induced cracking, and stress-induced hydrogen cracking can occur inside carbon steel, and a crack generated by hydrogen intrusion into steel due to corrosion in an acidic environment containing hydrogen sulfide or the like in a pipe is called hydrogen induced cracking.
Currently, the existing detection devices for hydrogen-induced cracking resistance of metal materials have some defects, for example; the existing detection device for the hydrogen-induced cracking resistance of the metal material lacks the testing capability of multiple condition comparison, the testing environment cannot be flexibly controlled, the environmental consistency cannot be ensured in the testing process of a plurality of samples in equipment, and in addition, when the crack of the material is detected, only two methods, namely a microscope and a penetration flaw detection method can give the crack length, but the microscope is often difficult to distinguish when observing a smaller crack, so that the detection device and the detection method for the hydrogen-induced cracking resistance of the metal material are provided.
Disclosure of Invention
The invention mainly aims to provide a device and a method for detecting hydrogen-induced cracking resistance of a metal material, which can effectively solve the problems of single test environment, inconsistent contrast test conditions and the like in the background art.
In order to solve the technical problems, the invention is realized by the following technical scheme: a detection device and a detection method for hydrogen induced cracking resistance of a metal material comprise a bearing device, a placing device, a control device, a detection assembly, a monitoring device, an impurity removing device and an experimental device, wherein the bearing device comprises a box body, a box cover and a box bottom, the box body is of a hollow tubular structure, the lower surface of the box cover is connected with the upper surface of the box body, the upper surface of the box bottom is connected with the lower surface of the box body, the placing device comprises a rotary column and placing tables, the upper surface of the rotary column is connected with the lower surface of the box cover, the four placing tables are all installed on the outer surface of the rotary column, the control device comprises a control panel, switch buttons and a timer, the lower surface of the control panel is connected with the upper surface of the box cover, one surface of the switch buttons is connected with one side surface of the control panel, and the detection assembly, four hydrogen sulfide pipe one end and box surface connection, hydrogen sulfide aerosol generator side surface is connected with the hydrogen sulfide pipe other end, monitoring devices is including installation piece, temperature sensor and humidity transducer, installation piece lower surface and case lid upper surface connection, temperature sensor upper surface and installation piece lower surface connection, humidity transducer upper surface and installation piece lower surface connection, the edulcoration device includes nitrogen gas pipe and connector, nitrogen gas pipe one end and the bottom of the case lower surface connection, the nitrogen gas pipe other end and a connector surface connection, experimental apparatus includes hydrogen pipe and connector, hydrogen pipe one end and case lid upper surface connection, a connector surface is connected with the hydrogen pipe other end.
Preferably, the bearing device further comprises a bearing ring, supporting columns and a base, the upper surface of the bearing ring is connected with the lower surface of the box bottom, the upper surfaces of the four supporting columns are connected with the lower surface of the bearing ring, and the upper surface of the base is connected with the lower surface of the supporting columns.
Preferably, the placing device further comprises a rotating motor and baffles, the lower surfaces of the rotating motor are connected with the upper surface of the rotating column, the lower surfaces of the four baffles are respectively connected with the upper surface of the placing table, a test space is provided for a sample through the placing device, the lower surface of the placing table is provided with a plurality of filtering holes, and test errors caused by condensation of liquid drops are reduced.
Preferably, controlling means still includes the display screen, a display screen surface is connected with control panel one side surface, through the environment in the observation test equipment that controlling means can be fine, be convenient for record and comparison, increased timing function moreover, the control test that can be more accurate is long has reduced staff's test pressure simultaneously.
Preferably, the determine module still includes fluorescent agent atomizer and fluorescent agent pipe, four fluorescent agent pipe one end all is connected with the box surface, fluorescent agent atomizer side surface is connected with the fluorescent agent pipe other end, processes the sample through determine module, and wherein, the fluorescent agent atomizer can help can carry out penetrant inspection after the sample receives hydrogen induced fracture and detect crack length.
Preferably, monitoring devices still includes the manometer, manometer lower surface and case lid upper surface connection can look over equipment data at any time through monitoring devices, including temperature, humidity and atmospheric pressure, can in time observe and modify when equipment internal environment fluctuates for it is more controllable and accurate to be close to the expectation condition to test.
Preferably, the edulcoration device still includes the filter screen, filter screen lower surface and nitrogen gas pipe upper surface connection extrude the inside oxygen of box through the edulcoration device, have increased the precision of experiment.
Preferably, experimental apparatus still includes heater strip and humidifier, the heater strip is installed inside the box, humidifier lower surface and case lid upper surface are connected, provide manifold test environment for equipment through experimental apparatus, and wherein, the heater strip is the device heat supply, and the humidifier can change the inside hydrogen sulfide concentration of equipment, and control is more various, and test scene selection range is big.
A detection device and a method for hydrogen-induced cracking resistance of a metal material comprise the following steps:
the method comprises the following steps: before the test, the sample is degreased by acetone, then is washed by alcohol to remove water, the treated sample is placed on a placing table, then nitrogen is introduced into a box body to remove original air, and the test is started after the solution is injected into a test container;
step two: cutting, grinding, polishing according to ASTM E3, evaluating the results of the tests according to the cracking degree defined in standard NACE TM 0103-2003;
step three: injecting 5% NaCI + 0.5% CH3COOH + saturated hydrogen sulfide water solution into a hydrogen sulfide atomization generator, atomizing, and then injecting into the box body, or injecting hydrogen with safe concentration into the box body through a hydrogen guide pipe;
step four: the internal air pressure of the loading box body is set according to the actual working conditions of a user, the corrosion test time is set to 168 hours, the test temperature of the test is 24 ℃, and the internal air pressure can be adjusted according to the specific working environment;
step five: introducing a dye flaw detection agent into a fluorescent agent sprayer, spraying the flaw detection agent to a sample through a fluorescent agent guide pipe, taking out the sample after the sample is placed for a period of time along with the penetration of a coloring agent into a damaged part, washing the coloring agent on the surface, coating a developing agent on the cleaned surface, and seeing the damaged part clearly because the coloring agent penetrates into the damaged part;
step six: the number and length of cracks in the test specimen were recorded one by one and compared by observation using a microscope.
The invention has the following beneficial effects:
1. according to the invention, a testing space is provided for the sample through the placing device, wherein the lower surface of the placing table is provided with a plurality of filtering holes, so that the testing error caused by the condensation of liquid drops is reduced, the placing table is rotated by the rotating motor, the sample can uniformly contact with hydrogen sulfide spray, so that the testing result is more accurate, the error of sampling and testing is reduced, and the baffle helps the sample not to slide off in the rotation, so that the testing stability is increased;
2. the environment in the test equipment can be well observed through the control device, so that the recording and comparison are convenient, a timing function is added, the test duration can be more accurately controlled, and the test pressure of workers is reduced;
3. according to the invention, the sample is processed through the detection assembly, wherein the fluorescent agent sprayer can help to perform penetration flaw detection and crack length detection after the sample is subjected to hydrogen induced cracking;
4. according to the invention, equipment data including temperature, humidity and air pressure can be checked at any time through the monitoring device, and can be observed and modified in time when the internal environment of the equipment fluctuates, so that the test is more controllable and is accurately close to the expected condition;
5. according to the invention, oxygen in the box body is extruded out through the impurity removing device, so that the experimental precision is increased;
6. the invention provides various testing environments for the equipment through the experimental device, wherein the heating wire supplies heat for the device, the humidifier can change the concentration of hydrogen sulfide in the equipment, the control is more various, and the selection range of a testing scene is wide.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of a device and a method for detecting hydrogen-induced cracking resistance of a metal material according to the present invention;
FIG. 2 is a schematic front view of the detecting apparatus and method for hydrogen induced cracking resistance of metal material according to the present invention;
FIG. 3 is a schematic diagram of a right-view structure of the detecting apparatus and method for hydrogen-induced cracking resistance of a metal material according to the present invention;
FIG. 4 is a schematic top view of the detecting apparatus and method for hydrogen cracking resistance of metal material according to the present invention;
FIG. 5 is a schematic view of the cross-sectional structure A-A in FIG. 1 illustrating a method and apparatus for detecting hydrogen-induced cracking resistance of a metal material according to the present invention;
FIG. 6 is a schematic view of a cross-sectional structure B-B in FIG. 2 illustrating a method and an apparatus for detecting hydrogen-induced cracking resistance of a metal material according to the present invention;
FIG. 7 is a schematic view of the cross-sectional structure C-C in FIG. 2 illustrating a method and apparatus for detecting hydrogen-induced cracking resistance of a metal material according to the present invention;
FIG. 8 is a schematic view of the cross-sectional structure D-D in FIG. 2 illustrating a method and apparatus for detecting hydrogen-induced cracking resistance of a metal material according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
100. a carrying device; 110. a box body; 120. a box cover; 130. the box bottom; 140. a load ring; 150. a support pillar; 160. a base; 200. a placement device; 210. a spin column; 220. a placing table; 230. a rotating electric machine; 240. a baffle plate; 300. a control device; 310. a control panel; 320. a switch button; 330. a timer; 340. a display screen; 400. a detection component; 410. a hydrogen sulfide atomization generator; 420. a hydrogen sulfide conduit; 430. a fluorescer sprayer; 440. a phosphor catheter; 500. a monitoring device; 510. mounting blocks; 520. a temperature sensor; 530. a humidity sensor; 540. a pressure gauge; 600. an impurity removal device; 610. a nitrogen gas conduit; 620. a connector; 630. a filter screen; 700. an experimental device; 710. a hydrogen gas conduit; 720. a connecting port; 730. heating wires; 740. a humidifier.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-8, the present invention is a device and a method for detecting hydrogen induced cracking resistance of a metal material, including a carrying device 100, a placing device 200, a control device 300, a detecting assembly 400, a monitoring device 500, an impurity removing device 600 and an experimental device 700, wherein the carrying device 100 includes a box body 110, a box cover 120 and a box bottom 130, the box body 110 is a hollow tubular structure, a lower surface of the box cover 120 is connected with an upper surface of the box body 110, an upper surface of the box bottom 130 is connected with a lower surface of the box body 110, the placing device 200 includes a rotary column 210 and placing tables 220, an upper surface of the rotary column 210 is connected with a lower surface of the box cover 120, four placing tables 220 are installed on an outer surface of the rotary column 210, the control device 300 includes a control panel 310, a switch button 320 and a timer 330, a lower surface of the control panel 310 is connected with an upper surface of the box cover 120, the detecting assembly 400 comprises a hydrogen sulfide atomization generator 410 and hydrogen sulfide conduits 420, one ends of the four hydrogen sulfide conduits 420 are connected with the outer surface of the box body 110, one side surface of the hydrogen sulfide atomization generator 410 is connected with the other end of the hydrogen sulfide conduit 420, the monitoring device 500 comprises a mounting block 510, temperature sensor 520 and humidity transducer 530, the lower surface of installation piece 510 and case lid 120 upper surface are connected, temperature sensor 520 upper surface and installation piece 510 lower surface are connected, humidity transducer 530 upper surface and installation piece 510 lower surface are connected, edulcoration device 600 includes nitrogen gas pipe 610 and connector 620, nitrogen gas pipe 610 one end and bottom of the case 130 lower surface are connected, the nitrogen gas pipe 610 other end and connector 620 surface are connected, experimental apparatus 700 includes hydrogen pipe 710 and connector 720, hydrogen pipe 710 one end and case lid 120 upper surface are connected, a connector 720 surface is connected with the hydrogen pipe 710 other end.
Referring to fig. 1-7, the carrying apparatus 100 further includes a carrying ring 140, supporting pillars 150, and a base 160, wherein an upper surface of the carrying ring 140 is connected to a lower surface of the box bottom 130, an upper surface of each of the four supporting pillars 150 is connected to a lower surface of the carrying ring 140, and an upper surface of the base 160 is connected to a lower surface of the supporting pillar 150.
Referring to fig. 1 to 7, the placing device 200 further includes a rotating motor 230 and baffles 240, the lower surface of the rotating motor 230 is connected with the upper surface of the rotating column 210, the lower surfaces of the four baffles 240 are respectively connected with the upper surface of the placing table 220, a testing space is provided for a sample through the placing device 200, wherein the lower surface of the placing table 220 is provided with a plurality of filtering holes, so that testing errors caused by condensation of liquid drops are reduced, the placing table 220 is rotated by the rotating motor 230, the sample can be uniformly contacted with hydrogen sulfide spray, so that testing results are more accurate, errors of sampling tests are reduced, the baffles 240 help the sample not to slide off in rotation, and testing stability is improved.
Referring to fig. 1-7, the control device 300 further includes a display screen 340, a surface of the display screen 340 is connected to a surface of one side of the control panel 310, the environment in the testing apparatus can be observed well through the control device 300, so as to facilitate recording and comparison, and the timing function is added, so that the testing duration can be controlled more accurately, and the testing pressure of the worker is reduced.
Referring to fig. 1-7, the detection assembly 400 further includes a fluorescent agent sprayer 430 and fluorescent agent conduits 440, one end of each of the four fluorescent agent conduits 440 is connected to the outer surface of the box body 110, one side surface of the fluorescent agent sprayer 430 is connected to the other end of the fluorescent agent conduit 440, and the sample is processed by the detection assembly 400, wherein the fluorescent agent sprayer 430 can help to perform penetrant inspection to detect the length of a crack after the sample is cracked by hydrogen.
Referring to fig. 1-7, the monitoring device 500 further includes a pressure gauge 540, the lower surface of the pressure gauge 540 is connected with the upper surface of the box cover 120, and the monitoring device 500 can check the data of the equipment, including temperature, humidity and air pressure, at any time, and can observe and modify the data in time when the internal environment of the equipment fluctuates, so that the test is more controllable and accurately close to the expected conditions.
Referring to fig. 1 to 7, the impurity removing device 600 further includes a filter screen 630, a lower surface of the filter screen 630 is connected to an upper surface of the nitrogen guide pipe 610, and oxygen inside the box body 110 is extruded through the impurity removing device 600, so that the accuracy of the experiment is increased.
Referring to fig. 1 to 7, the experimental apparatus 700 further includes a heating wire 730 and a humidifier 740, the heating wire 730 is installed inside the case body 110, the lower surface of the humidifier 740 is connected with the upper surface of the case cover 120, and various testing environments are provided for the equipment through the experimental apparatus 700, wherein the heating wire 730 supplies heat to the apparatus, the humidifier 740 can change the concentration of hydrogen sulfide inside the equipment, the control is more various, and the selection range of the testing scenario is large.
A detection device and a method for hydrogen-induced cracking resistance of a metal material comprise the following steps:
the method comprises the following steps: before the test, the sample is degreased by acetone, then is washed by alcohol to remove water, the treated sample is placed on a placing table 220, then nitrogen is introduced into the box body 110 to remove original air, and the test is started after the solution is injected into a test container;
step two: cutting, grinding, polishing according to ASTM E3, evaluating the results of the tests according to the cracking degree defined in standard NACE TM 0103-2003;
step three: injecting 5% NaCI + 0.5% CH3COOH + saturated hydrogen sulfide water solution into the hydrogen sulfide atomization generator 410, atomizing and then injecting into the box body 110, or injecting hydrogen with safe concentration into the box body 110 through a hydrogen guide pipe 710;
step four: the internal air pressure of the loading box body 110 is set according to the actual working conditions of a user, the corrosion test time is set to 168 hours, the test temperature of the test is 24 ℃, and the internal air pressure can be adjusted according to the specific working environment;
step five: introducing a dye flaw detector into a fluorescent agent sprayer 430, spraying the flaw detector onto the sample through a fluorescent agent conduit 440, taking out the sample after the sample is placed for a period of time with the dye penetrating into the damaged part, washing the dye on the surface, coating a developer on the cleaned surface, and making the damaged part see clearly because the dye penetrates into the damaged part;
step six: the number and length of cracks in the test specimen were recorded one by one and compared by observation using a microscope.
When the test device is used, firstly, the box cover 120 is opened, then a sample is placed on the placing table 220, then the box cover 120 is closed to ensure the sealing, then the hydrogen sulfide solution with the preset concentration is injected into the hydrogen sulfide atomization generator 410, then nitrogen is input into the box body 110 through the nitrogen conduit 610 to remove oxygen in the box body 110, then the connector 620 is closed, then the start monitoring device 500 and the switch button 320 of the detection assembly 400 are pressed, then the value of the heating wire 730 is set according to the test purpose and timed through the timer 330, then the monitoring device 500 transmits the monitoring data to the display screen 340, the observation can be carried out at any time, if the test item is hydrogen induced cracking of hydrogen, hydrogen is input into the box body 110 through the hydrogen conduit 710 to replace the step of spraying hydrogen sulfide spray to the box body 110, and after the detection time is up, the fluorescent agent sprayer 430 is started to spray fluorescent agent to the sample, samples were then taken for analysis of data such as fracture density and length.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides a detection device and method for anti hydrogen induced cracking performance of metal material, includes load-bearing device (100), placer (200), controlling means (300), detection subassembly (400), monitoring devices (500), edulcoration device (600) and experimental apparatus (700), its characterized in that: the bearing device (100) comprises a box body (110), a box cover (120) and a box bottom (130), the box body (110) is of a hollow tubular structure, the lower surface of the box cover (120) is connected with the upper surface of the box body (110), the upper surface of the box bottom (130) is connected with the lower surface of the box body (110), the placing device (200) comprises a rotating column (210) and a placing table (220), the upper surface of the rotating column (210) is connected with the lower surface of the box cover (120), four placing tables (220) are all arranged on the outer surface of the rotating column (210), the control device (300) comprises a control panel (310), switch buttons (320) and a timer (330), the lower surface of the control panel (310) is connected with the upper surface of the box cover (120), one surface of nine switch buttons (320) is connected with one side surface of the control panel (310), the detection assembly (400) comprises a hydrogen sulfide atomization generator (410) and a hydrogen sulfide guide pipe (420), four hydrogen sulfide pipe (420) one end and box (110) surface connection, hydrogen sulfide atomization generator (410) side surface is connected with hydrogen sulfide pipe (420) other end, monitoring devices (500) are including installation piece (510), temperature sensor (520) and humidity transducer (530), installation piece (510) lower surface and case lid (120) upper surface connection, temperature sensor (520) upper surface and installation piece (510) lower surface connection, humidity transducer (530) upper surface and installation piece (510) lower surface connection, edulcoration device (600) includes nitrogen gas pipe (610) and connector (620), nitrogen gas pipe (610) one end and bottom of the case (130) lower surface connection, nitrogen gas pipe (610) other end and connector (620) surface connection, experimental apparatus (700) includes hydrogen pipe (710) and connector (720), one end of the hydrogen guide pipe (710) is connected with the upper surface of the box cover (120), and one surface of the connecting port (720) is connected with the other end of the hydrogen guide pipe (710).
2. The device and the method for detecting the hydrogen-induced cracking resistance of the metal material according to claim 1, wherein: the bearing device (100) further comprises a bearing ring (140), supporting columns (150) and a base (160), wherein the upper surface of the bearing ring (140) is connected with the lower surface of the box bottom (130), the upper surfaces of the four supporting columns (150) are connected with the lower surface of the bearing ring (140), and the upper surface of the base (160) is connected with the lower surface of the supporting columns (150).
3. The device and the method for detecting the hydrogen-induced cracking resistance of the metal material according to claim 1, wherein: the placing device (200) further comprises a rotating motor (230) and baffles (240), wherein the lower surface of the rotating motor (230) is connected with the upper surface of the rotating column (210), and the lower surfaces of the four baffles (240) are respectively connected with the upper surface of the placing table (220).
4. The device and the method for detecting the hydrogen-induced cracking resistance of the metal material according to claim 1, wherein: the control device (300) further comprises a display screen (340), and one surface of the display screen (340) is connected with one side surface of the control panel (310).
5. The device and the method for detecting the hydrogen-induced cracking resistance of the metal material according to claim 1, wherein: the detection assembly (400) further comprises a fluorescent agent sprayer (430) and fluorescent agent guide tubes (440), wherein one ends of the fluorescent agent guide tubes (440) are connected with the outer surface of the box body (110), and one side surface of the fluorescent agent sprayer (430) is connected with the other ends of the fluorescent agent guide tubes (440).
6. The device and the method for detecting the hydrogen-induced cracking resistance of the metal material according to claim 1, wherein: the monitoring device (500) further comprises a pressure gauge (540), and the lower surface of the pressure gauge (540) is connected with the upper surface of the box cover (120).
7. The device and the method for detecting the hydrogen-induced cracking resistance of the metal material according to claim 1, wherein: edulcoration device (600) still include filter screen (630), filter screen (630) lower surface and nitrogen gas pipe (610) upper surface are connected.
8. The device and the method for detecting the hydrogen-induced cracking resistance of the metal material according to claim 1, wherein: the experimental device (700) further comprises a heating wire (730) and a humidifier (740), the heating wire (730) is installed inside the box body (110), and the lower surface of the humidifier (740) is connected with the upper surface of the box cover (120).
9. The device and the method for detecting the hydrogen-induced cracking resistance of the metal material according to claim 1, wherein: the method comprises the following steps:
the method comprises the following steps: before the test, the sample is degreased by acetone, then is washed by alcohol to remove water, the treated sample is placed on a placing table (220), then nitrogen is introduced into a box body (110) to remove original air, and the test is started after the solution is injected into a test container;
step two: cutting, grinding, polishing according to ASTM E3, evaluating the results of the tests according to the cracking degree defined in standard NACE TM 0103-2003;
step three: injecting 5% NaCI + 0.5% CH3COOH + saturated hydrogen sulfide water solution into a hydrogen sulfide atomization generator (410), atomizing and then injecting the atomized water solution into a box body (110), or injecting hydrogen with safe concentration into the box body (110) through a hydrogen guide pipe (710);
step four: the internal air pressure of the loading box body (110) is set according to the actual working conditions of a user, the corrosion test time is set to 168 hours, the test temperature of the test is 24 ℃, and the internal air pressure can be adjusted according to the specific working environment;
step five: introducing a dye flaw detector into a fluorescent agent sprayer 430, spraying the flaw detector onto the sample through a fluorescent agent conduit 440, taking out the sample after the sample is placed for a period of time with the dye penetrating into the damaged part, washing the dye on the surface, coating a developer on the cleaned surface, and making the damaged part see clearly because the dye penetrates into the damaged part;
step six: the number and length of cracks in the test specimen were recorded one by one and compared by observation using a microscope.
CN202011588819.6A 2020-12-29 2020-12-29 Device and method for detecting hydrogen-induced cracking resistance of metal material Pending CN112748062A (en)

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