CN107817255A - A kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity - Google Patents
A kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity Download PDFInfo
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- CN107817255A CN107817255A CN201710962828.9A CN201710962828A CN107817255A CN 107817255 A CN107817255 A CN 107817255A CN 201710962828 A CN201710962828 A CN 201710962828A CN 107817255 A CN107817255 A CN 107817255A
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- hydrogen
- storage vessel
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- hydrogen storage
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/646—Specific applications or type of materials flaws, defects
Abstract
The invention discloses a kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity, after hydrogen storage vessel workpiece is heated into 200 DEG C ~ 280 DEG C, it is cooled to normal temperature, insert in vacuum chamber, it is evacuated to 3 ~ 50Pa, 20 ~ 50KPa hydrogen isotope tritium is filled with, heating, to 100 DEG C ~ 280 DEG C, is incubated 10 ~ 20 h containing tritium gas；Take out workpiece, it is placed in after cooling in darkroom, stick photographic film, receive X ray caused by β rays caused by the hydrogen isotope tritium atomic decay inside workpiece and β ray inductions, take out photographic film, rinse, the workpiece particular location hydrogen defect order of severity and distribution situation are shown on photographic film；The photographic film for showing workpiece hydrogen defect colourity is compared with hydrogen defect order of severity standard colorimetric plate, determines particular location hydrogen defect severity level.The present invention can determine particular location hydrogen-induced damage degree, thus can take counter-measure.
Description
Technical field
It is more particularly to a kind of to utilize β rays and X ray at photosensitive bottom the present invention relates to a kind of material hydrogen defect e measurement technology
Radiography measures the method for the hydrogen storage vessel workpiece particular location hydrogen defect order of severity on piece.
Background technology
As impact of the pollution to environment is on the rise caused by conventional petroleum energy source use, the clean applications of hydrogen energy source are excellent
Gesture is also further obvious.The storage method of hydrogen includes compression hydrogen storage, liquefaction hydrogen storage and hydride hydrogen-storing etc..Most commonly
Compression hydrogen storage container, compression hydrogen storage container have requirements at the higher level to the intensity and resistant to hydrogen performance of sheet material used in manufacture, and reason is：Hold
Hydrogen is diffused into inside metal material after device storage compression hydrogen, easily in dislocation, crystal boundary, foreign atom, field trash and Microfocus X-ray tube
The defects of at assemble, directly affect the physical property of metal material, it is become fragile；Or it is stored in molecular state in metal material
Portion, increase the internal stress of material, cause it to be plastically deformed, crack or bulge, acceleration Crack Extension, or even generation are crisp
Property fracture.As can be seen here, need to have sufficiently strong hydrogen damage resistance with the container material that hydrogen directly contacts and just can guarantee that it
Long-term safety is on active service in hydrogen environment is faced.
Material smelt, rolling and post-production deformation process in, material internal microstructure be all it is incomplete,
The defects of under microscope it can be seen that various, such as the gap of dislocation, crystal boundary, foreign atom, field trash and Microfocus X-ray tube etc.,
These defects all easily catch hydrogen, referred to as hydrogen defect, also referred to as hydrogen trap, and various strain fields are there are around these defects, are caught
The hydrogen atom for spreading and in material is caught, so as to influence hydrogen atom delay distribution in the material and hold-up, and and then influences material
Expect the hydrogen-induced damage degree of corresponding site.
At present, in laboratory, thermal decomposition analytic approach can be used, the seizure amount of hydrogen in sample is measured, however, this method
Average content of the hydrogen in tested sample can only be obtained, it is impossible to dislocation of the display hydrogen directly perceived inside sample, crystal boundary, field trash,
Position was detained the order of severity and was detained distribution situation the defects of Microfocus X-ray tube, thus can not be according to material relevant position hydrogen-induced damage journey
Degree takes counter-measure, such as local to thicken to extend the service life of hydrogen storage vessel.In addition, the hydrogen in laboratory measurement sample
Seizure amount, the hydrogen defect general condition of the block sample is can only obtain, used as the theoretical research of material hydrogen defect, in the hydrogen storage of reality
In container workpiece manufacturing process, because this method is unable to the order of severity of display material hydrogen defect particular location, thus do not have
Practicality, without the actual directive significance of commercial Application.
The content of the invention
It is an object of the invention to provide it is a kind of using β rays and X ray on photographic film radiography measures hydrogen storage vessel
The method of the workpiece particular location hydrogen defect order of severity, by developing to picture on photographic film, determines hydrogen in measured material
Position was detained the order of severity and was detained distribution situation the defects of internal dislocation, crystal boundary, foreign atom, field trash and Microfocus X-ray tube,
Counter-measure is taken according to measured material relevant position hydrogen-induced damage degree, extends hydrogen storage vessel service life.Stored up for improving
Hydrogen tank workmanship and safe handling, there is practical guided significance.
To achieve the above object, the present invention takes following technical scheme：
A kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity, specifically includes following steps：
1）After hydrogen storage vessel workpiece is heated into 200 DEG C ~ 280 DEG C in heating furnace, 50 ~ 150min is incubated, is cooled to often
Temperature, insert in vacuum chamber, be evacuated to 3 ~ 50Pa, be filled with 20 ~ 50KPa hydrogen isotope tritium, after 1 ~ 10min, heating contains tritium gas
Body is incubated 10 ~ 20 h to 100 DEG C ~ 280 DEG C；
2）Hydrogen storage vessel workpiece is taken out, is cooled to normal temperature, then is placed in darkroom, sticks photographic film, hydrogen storage vessel is received and adds
β rays and the X ray as caused by β ray inductions caused by the hydrogen isotope tritium atomic decay of inside workpiece, after 1 hour, take out
Photographic film, rinse, show that hydrogen storage vessel workpiece particular location hydrogen lacks on photographic film on computers by color scanner
Fall into the order of severity and distribution situation；
3）The photographic film for showing hydrogen storage vessel workpiece hydrogen defect colourity is compared with hydrogen defect order of severity standard colorimetric plate,
Determine particular location hydrogen defect severity level.
Preferably, step 1）After hydrogen storage vessel workpiece is heated into 250 DEG C ~ 280 DEG C in heating furnace, insulation 60min ~
90min, normal temperature is cooled to, inserted in vacuum chamber, be evacuated to 4 ~ 25Pa, be filled with 35 ~ 50KPa hydrogen isotope tritium, 2 ~
After 6min, heating, to after 180 DEG C ~ 280 DEG C, is incubated 11 ~ 15 h containing tritium gas；
It is further preferred that step 1）After hydrogen storage vessel workpiece is heated into 270 DEG C ~ 280 DEG C in heating furnace, insulation
50min ~ 60min, normal temperature is cooled to, inserted in vacuum chamber, be evacuated to 5 ~ 20Pa, be filled with 40 ~ 50KPa hydrogen isotope
Tritium, after 1 ~ 4min, heating, to after 260 DEG C ~ 280 DEG C, is incubated 10 ~ 12 h containing tritium gas；
The purity containing tritium gas is 30.0% ~ 99.9%.
The present invention operation principle be that the hydrogen isotope tritium for being trapped in material internal has radioactivity, tritium atomic decay and produce
Raw β rays, β rays run into the atom of material internal, and atom is excited and produces X ray, in the photographic film of tacking material
Imaging.Because the material different parts hydrogen defect order of severity is different, it is also different to capture the density of hydrogen isotope tritium, accordingly
The radioactivity β rays that send, the intensity of X ray（Dosage）Also it is different, therefore, according to this characteristic, β rays and X in material
Ray can be with the display material different parts hydrogen defect order of severity in the development of the exposure intensity display brightness difference of photographic film
And distribution situation, establish exposure intensity（Brightness）With colourity function corresponding relation, the luminance difference on photographic film is passed through into coloured silk
Color scanner is converted into the color of different colourities, on computers display directly perceived, then with hydrogen defect order of severity standard colorimetric plate ratio
It is right, so that it is determined that the material particular location hydrogen defect order of severity.
Compared with prior art, its advantage is the base in the hydrogen seizure amount of existing thermal decomposition analytic approach measurement material to the present invention
On plinth further, picture is developed on photographic film by β rays in material and X ray, determines hydrogen in measured material
Position was detained the order of severity and was detained distribution situation the defects of dislocation in portion, crystal boundary, foreign atom, field trash and Microfocus X-ray tube, and
The photographic film of the display material hydrogen defect order of severity and distribution situation is converted into the color of different colourities by color scanner
Coloured silk, display directly perceived, and then obtain the hydrogen-induced damage degree of measured material relevant position on computers, according to measured material corresponding positions
Put hydrogen-induced damage degree and take counter-measure, extend hydrogen storage vessel service life.This method has in commercial Application actually to be referred to
Lead meaning.
Brief description of the drawings
Fig. 1 is that the embodiment of the present invention fills the β rays of tritium hydrogen storage vessel workpiece, X ray is radiated 1 hour and shown on computers
The testing result chromatic diagram of the hydrogen defect order of severity and distribution situation on photographic film.
Fig. 2 is 1 hour hydrogen defect order of severity standard colorimetric plate of demarcation.
In figure：1st, photographic film；2nd, workpiece discrete piece is developed；3rd, color board.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.With reference to figure 1, Fig. 2,
A kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity, specifically includes following steps：
1）After hydrogen storage vessel workpiece is heated into 200 DEG C ~ 280 DEG C in heating furnace, 50 ~ 150min is incubated, is cooled to often
Temperature, insert in vacuum chamber, be evacuated to 3 ~ 50Pa, be filled with 20 ~ 50KPa hydrogen isotope tritium, after 1 ~ 10min, heating contains tritium gas
Body is incubated 10 ~ 20 h, it is ensured that tritium is uniform in material internal diffusion profile to 100 DEG C ~ 280 DEG C；
2）Hydrogen storage vessel workpiece is taken out, is cooled to normal temperature, then is placed in darkroom, sticks photographic film 1, hydrogen storage vessel is received and adds
β rays and the X ray as caused by β ray inductions caused by the hydrogen isotope tritium atomic decay of inside workpiece, after 1 hour, take out
Photographic film 1, rinse, show hydrogen storage vessel workpiece particular location hydrogen on photographic film 1 on computers by color scanner
The defect order of severity and distribution situation；
3）By the photographic film 1 of display hydrogen storage vessel workpiece hydrogen defect colourity with hydrogen defect order of severity standard colorimetric plate than 3
It is right, determine particular location hydrogen defect severity level.Preferably, step 1）Hydrogen storage vessel workpiece is heated in heating furnace
To after 250 DEG C ~ 280 DEG C, 60min ~ 90min is incubated, normal temperature is cooled to, inserts in vacuum chamber, be evacuated to 4 ~ 25Pa, be filled with
35 ~ 50KPa hydrogen isotope tritium, after 2 ~ 6min, heating, to after 180 DEG C ~ 280 DEG C, is incubated 11 ~ 15 h containing tritium gas；Further
Preferably, step 1）After hydrogen storage vessel workpiece is heated into 270 DEG C ~ 280 DEG C in heating furnace, 50min ~ 60min is incubated, then
Normal temperature is cooled to, is inserted in vacuum chamber, is evacuated to 5 ~ 20Pa, is filled with 40 ~ 50KPa hydrogen isotope tritium, after 1 ~ 4min, heating
Containing tritium gas to after 260 DEG C ~ 280 DEG C, 10 ~ 12 h are incubated；The purity containing tritium gas is 30.0% ~ 99.9%.
The purpose of hydrogen storage vessel workpiece heating of the present invention is to exclude the remaining hydrogen in workpiece discrete piece, and heating-up temperature is got over
Low, remaining hydrogen diffusion velocity is slower, and row's hydrogen time is longer；Heating-up temperature is higher, although remaining hydrogen diffusion velocity is faster, when arranging hydrogen
Between it is shorter, but the too high intensity decreases on hydrogen storage vessel workpiece of temperature influence it is very big；Therefore, show by test of many times,
Heating and temperature control is optimum range at 200 DEG C ~ 280 DEG C.
Hydrogen isotope tritium is diffused into the inside required time and purity containing tritium gas, pressure, temperature of hydrogen storage vessel workpiece
Relevant, purity containing tritium gas is higher, pressure is bigger, temperature is higher, and it is shorter that hydrogen storage vessel workpiece fills the tritium time.Certainly, it is too high
Heating-up temperature can influence the performance of hydrogen storage vessel workpiece.Experiment shows, as commercial Application scheme, the present invention is selected to fill tritium
20 ~ 50KPa of pressure, heating temperature control containing tritium gas is at 100 DEG C ~ 280 DEG C.
Fig. 2 is 1 hour hydrogen defect order of severity standard colorimetric plate of demarcation, 14 ranks is shared, according to brightness and colourity pair
It should be related to, the hydrogen defect order of severity is gradually reduced by mark A, B, C, D, E, F, G, H, I, J, K, L, M, N colourity.
Being produced in laboratory for hydrogen defect order of severity standard colorimetric plate is completed.It is tight by hydrogen defect is represented in laboratory
The each rank of weight degree（Totally 14 ranks）Standard specimen insert in closed container, be evacuated to 3 ~ 50Pa, be filled with 20 ~ 50KPa's
Hydrogen isotope tritium, after 1 ~ 10min, heating, to 100 DEG C ~ 280 DEG C, is incubated 10 ~ 20 h containing tritium gas；14 standard specimens are further taken out, it is cold
But it is placed in afterwards in darkroom, sticks photographic film, receives β rays caused by the hydrogen isotope tritium atomic decay inside standard specimen and by β
X ray caused by ray induction, time of launch is set, as the nominal time, this 14 photographic films are taken out by the nominal time, rushed
Wash, pass through the exposure intensity of foundation（Brightness）With colourity function corresponding relation, the brightness on every photographic film is passed through into colour
Scanner is converted into the color of different colourities, shows each serious journey of rank standard specimen hydrogen defect of this 14 photographic films on computers
The colourity of degree.The colourity for representing each rank hydrogen defect order of severity standard specimen is sorted according to the depth of color, is placed sequentially in
On color board, hydrogen defect order of severity standard colorimetric plate is fabricated to.According to the nominal time of setting, can make the nominal time is
1 hour, 2 hours, 3 hours or the hydrogen defect order of severity standard colorimetric plate of other times.
Embodiment 1：
Manufacture a small-sized hydrogen container, it is desirable to which tank body hydrogen defect severity level is no more than the hydrogen that the nominal time is 1 hour
E levels in defect order of severity standard colorimetric plate.The tank body workpiece discrete piece made is put into 260 are heated in heating furnace
DEG C, 80min is incubated, excludes the remaining hydrogen in tank body workpiece discrete piece.The mode of heating of heating furnace using conventional gas heating or
Electrical heating, and control heating-up temperature is adjusted with switch, with thermocouple monitoring heating-up temperature.The heating of tank body workpiece discrete piece finishes
After take out, be cooled to normal temperature, insert in vacuum chamber, set vacuum as 10Pa, be evacuated to 10Pa with vavuum pump, open tritium gas
Bottle, pressure is adjusted, sets and fills tritium pressure as 40KPa, be filled with the hydrogen isotope tritium that tritium purity is 99.9%, be full of vacuum after 3min
Room, with electric heater heating containing tritium gas to 260 DEG C, and heating-up temperature is controlled with rotary switch, heated with thermocouple monitoring
Temperature, tank body workpiece discrete piece is taken out after being incubated 14 h, is cooled to normal temperature, then be placed in darkroom, in tank body workpiece discrete piece
Photographic film 1 is sticked on two surfaces, is fixed with transparent adhesive tape.Photographic film 1 receives the hydrogen isotope inside tank body workpiece discrete piece
β rays caused by tritium atomic decay and the X ray as caused by β ray inductions, time of launch is set as 1 hour, reach 1 hour,
Photographic film 1 is taken out, is rinsed, the tank body workpiece discrete piece particular location hydrogen defect order of severity is shown on photographic film 1 and is divided
The imaging of cloth situation.Tank body workpiece discrete piece development 2 is converted into hydrogen defect colourity by color scanner on computers, with mark
Fix time and compared for the hydrogen defect order of severity standard colorimetric plate 3 of 1 hour, determine particular location hydrogen defect severity level.
Fig. 1 shows that the tank body workpiece discrete piece that a surface of tank body workpiece discrete piece is shown on photographic film 1 shows
The particular location hydrogen defect order of severity and distribution situation chromatic diagram of shadow 2, compared from Fig. 1 and Fig. 2 and can be seen that tank body in Fig. 1
It is serious that A, the hydrogen defect problem of location of C are identified in workpiece discrete piece development 2, hydrogen defect severity level is more than the requirement of E levels, tank
Thickening is needed to handle in this position after the assembled welding of body, and the other positions hydrogen defect of tank body workpiece discrete piece is not above E levels,
Reach safe handling to require.
Embodiment 2：
Build a large-scale hydrogen storage vessel, it is desirable to which hydrogen storage vessel hydrogen defect severity level is 1 small no more than the nominal time
When hydrogen defect order of severity standard colorimetric plate 3 in C levels.Hydrogen storage vessel workpiece discrete piece is put into heating furnace and is heated to
280 DEG C, 60min is incubated, excludes the remaining hydrogen in hydrogen storage vessel workpiece discrete piece.After hydrogen storage vessel workpiece discrete piece heats
Take out, be cooled to normal temperature, insert in vacuum chamber, set vacuum as 5Pa, be evacuated to 5Pa with vavuum pump, open tritium gas bottle,
Pressure is adjusted, sets and fills tritium pressure as 48KPa, the tritium deuterium mixed gas that tritium purity is 60% is filled with, is full of vacuum chamber after 2min,
Heating, to 270 DEG C, takes out hydrogen storage vessel workpiece discrete piece after being incubated 11 h, is cooled to normal temperature, is placed in darkroom containing tritium gas,
Photographic film 1 is sticked on two surfaces of hydrogen storage vessel workpiece discrete piece, is fixed with transparent adhesive tape.Photographic film 1 receives hydrogen storage vessel
β rays and the X ray as caused by β ray inductions, setting are put caused by hydrogen isotope tritium atomic decay inside workpiece discrete piece
The time is penetrated as 1 hour, is reached 1 hour, takes out photographic film 1, rinses, shows that hydrogen storage vessel workpiece dissipates on photographic film 1
The piece particular location hydrogen defect order of severity and distribution situation development.Hydrogen storage vessel workpiece discrete piece development 2 is passed through into chromoscan
Instrument is converted into hydrogen defect colourity on computers, is compared with the nominal time for the hydrogen defect order of severity standard colorimetric plate 3 of 1 hour,
According to comparison result, hydrogen storage vessel workpiece discrete piece particular location hydrogen defect severity level is determined, by manufacture requirement to quilt
Survey discrete piece relevant position hydrogen-induced damage degree and take counter-measure.
Embodiment 3：
Manufacture a hydrogen cylinder, it is desirable to which hydrogen cylinder bottle hydrogen defect severity level is 1 hour no more than the nominal time
G levels in hydrogen defect order of severity standard colorimetric plate.After making material mould pressing, put into and 210 DEG C be heated in heating furnace,
140min is incubated, excludes the remaining hydrogen in hydrogen cylinder bottle.Hydrogen cylinder bottle takes out after heating, and is cooled to normal temperature, inserts
In vacuum chamber, vacuum is set as 36Pa, 36Pa is evacuated to vavuum pump, opens tritium gas bottle, adjusts pressure, and tritium pressure is filled in setting
Power is 21KPa, is filled with 21KPa tritiums purity as 30% tritium deuterium mixed gas, and after 10min, heating, to 130 DEG C, is incubated containing tritium gas
Hydrogen cylinder bottle is taken out after 20 h, normal temperature is cooled to, is placed in darkroom, photographic film 1 is sticked in hydrogen cylinder bottle peripheral surface,
Fixed with transparent adhesive tape.Photographic film 1 receives β rays and by β caused by hydrogen isotope tritium atomic decay inside hydrogen cylinder bottle
X ray caused by ray induction, setting time of launch 1 hour, is reached 1 hour, takes out photographic film 1, is rinsed, in photographic film
The hydrogen cylinder bottle whole body particular location hydrogen defect order of severity and distribution situation are shown on 1.The hydrogen cylinder bottle whole body will be shown
Photographic film 1 is converted into hydrogen defect colourity by color scanner on computers, will show hydrogen cylinder bottle hydrogen defect colourity
Photographic film 1 compares with the hydrogen defect order of severity standard colorimetric plate that the nominal time is 1 hour, according to comparison result, determines hydrogen
Gas cylinder bottle particular location hydrogen defect severity level, tested bottle relevant position hydrogen-induced damage degree is adopted by manufacture requirement
Take counter-measure.
Finally illustrate：The technical scheme is that using hydrogen defect order of severity standard colorimetric plate is shown, therefore, in reality
Border uses the middle serious journey of display material different parts hydrogen defect for needing to leave photographic film 1 after β rays, x-ray bombardment
The exposure intensity of degree（Brightness）The exposure intensity that difference passes through foundation（Brightness）With colourity function corresponding relation, by photographic film 1
On luminance difference the colors of different colourities is converted into by color scanner, display directly perceived on computers is easy to and hydrogen defect
Order of severity standard colorimetric plate compares, so that it is determined that the material different parts hydrogen defect order of severity.Photographic film 1 reflects hydrogen defect
The development of the order of severity is the difference of color, the difference and the color ratio of Fig. 2 hydrogen defects severity level setting of this color
It is right, it is possible to determine the hydrogen storage vessel workpiece hydrogen defect order of severity.The hydrogen defect order of severity level of Fig. 1, Fig. 2 mark of the present invention
It is not that fully understanding for technical solution of the present invention is identified for the ease of auditor, actual use does not identify.Fig. 1, Fig. 2 are corresponding
Colour picture submit simultaneously as a reference.
Final statement：The scope of the present invention is not limited thereto, technique according to the invention scheme and its inventive concept
It is subject to equivalent substitution or change, should be all included within the scope of the present invention.
Claims (4)
1. a kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity, specifically includes following steps：
1）After hydrogen storage vessel workpiece is heated into 200 DEG C ~ 280 DEG C in heating furnace, 50 ~ 150min is incubated, is cooled to often
Temperature, insert in vacuum chamber, be evacuated to 3 ~ 50Pa, be filled with 20 ~ 50KPa hydrogen isotope tritium, after 1 ~ 10min, heating contains tritium gas
Body is incubated 10 ~ 20 h to 100 DEG C ~ 280 DEG C；
2）Hydrogen storage vessel workpiece is taken out, is cooled to normal temperature, then is placed in darkroom, sticks photographic film, hydrogen storage vessel is received and adds
β rays and the X ray as caused by β ray inductions caused by the hydrogen isotope tritium atomic decay of inside workpiece, after 1 hour, take out
Photographic film, rinse, show that hydrogen storage vessel workpiece particular location hydrogen lacks on photographic film on computers by color scanner
Fall into the order of severity and distribution situation；
3）The photographic film for showing hydrogen storage vessel workpiece hydrogen defect colourity is compared with hydrogen defect order of severity standard colorimetric plate,
Determine particular location hydrogen defect severity level.
2. a kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity according to claim 1,
Characterized in that, step 1）After hydrogen storage vessel workpiece is heated into 250 DEG C ~ 280 DEG C in heating furnace, insulation 60min ~
90min, normal temperature is cooled to, inserted in vacuum chamber, be evacuated to 4 ~ 25Pa, be filled with 35 ~ 50KPa hydrogen isotope tritium, 2 ~
After 6min, heating, to after 180 DEG C ~ 280 DEG C, is incubated 11 ~ 15 h containing tritium gas.
3. a kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity according to claim 1,
Characterized in that, step 1）After hydrogen storage vessel workpiece is heated into 270 DEG C ~ 280 DEG C in heating furnace, insulation 50min ~
60min, normal temperature is cooled to, inserted in vacuum chamber, be evacuated to 5 ~ 20Pa, be filled with 40 ~ 50KPa hydrogen isotope tritium, 1 ~
After 4min, heating, to after 260 DEG C ~ 280 DEG C, is incubated 10 ~ 12 h containing tritium gas.
A kind of 4. side of measurement hydrogen storage vessel workpiece particular location hydrogen defect order of severity according to claim 1,2,3
Method, it is characterised in that the purity containing tritium gas is 30.0% ~ 99.9%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710962828.9A CN107817255A (en) | 2017-10-17 | 2017-10-17 | A kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity |
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| CN201710962828.9A CN107817255A (en) | 2017-10-17 | 2017-10-17 | A kind of method for measuring the hydrogen storage vessel workpiece particular location hydrogen defect order of severity |
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| CN107153073A (en) * | 2016-03-06 | 2017-09-12 | 波音公司 | For the method and apparatus for the radiography for detecting the crack in material and assembly parts, defect or leakage paths |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000298174A (en) * | 1999-04-14 | 2000-10-24 | Nisso Engineering Co Ltd | Rigid body surface micro defect detecting method |
| JP2002311188A (en) * | 2001-04-13 | 2002-10-23 | Mitsubishi Heavy Ind Ltd | Evaluation method for stress corrosion cracking sensitivity |
| CN107153073A (en) * | 2016-03-06 | 2017-09-12 | 波音公司 | For the method and apparatus for the radiography for detecting the crack in material and assembly parts, defect or leakage paths |
| CN106338529A (en) * | 2016-08-29 | 2017-01-18 | 中航动力股份有限公司 | Radiographic testing method for welding quality of brazed pipe welds |
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| E. SERRA等: "Influence of traps on the deuterium behavior in the low activation martensitic steels F82H and Batman", 《JOURNAL OF NUCLEAR MATERIALS》 * |
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