CN109580672A - With the consistent artificial stress corrosion cracking (SCC) novel preparation method of real crack form - Google Patents
With the consistent artificial stress corrosion cracking (SCC) novel preparation method of real crack form Download PDFInfo
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- CN109580672A CN109580672A CN201811459252.5A CN201811459252A CN109580672A CN 109580672 A CN109580672 A CN 109580672A CN 201811459252 A CN201811459252 A CN 201811459252A CN 109580672 A CN109580672 A CN 109580672A
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- corrosion cracking
- stress corrosion
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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
- G01N23/046—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 using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
Abstract
With the consistent artificial stress corrosion cracking (SCC) novel preparation method of real crack form, imaging is scanned to true stress corrosion cracking test block first with industry CT, obtain stress corrosion cracking (SCC) aspect graph, utilize the stress corrosion cracking (SCC) aspect graph, in conjunction with 3D printing technique, direct 3D printing acquisition and the consistent artificial stress corrosion cracking (SCC) of true stress corrosion cracking form；The test specimen of the method for the present invention preparation can carry out repeatable processing and preparation to stress corrosion cracking (SCC) natural in practical structures, have the advantages that crack morphology is consistent with real crack, can be prepared on a large scale, in the detectability approval procedure that can be widely applied for stress corrosion cracking (SCC) vortex quantitative NDT method.
Description
Technical field
The present invention relates to the preparation fields of stress corrosion cracking (SCC) simulation test specimen, and in particular to a kind of and real crack form one
The artificial stress corrosion cracking (SCC) novel preparation method caused.
Background technique
The austenitic stainless steel material to stress corrosion-susceptible, and tensile stress in nuclear power structure are widely used in nuclear power station
With the presence of corrosive environment, stress corrosion cracking (SCC) is made to widely exist in the key position of nuclear power station, if furnace core is every cylinder, recycling
Pipe and main cooling tube welding position etc..The presence of stress corrosion cracking (SCC) produces huge prestige to the safe operation of nuclear power structure
In addition the side of body considers economic benefit, needs to evaluate and test the size of crackle, therefore the quantitative lossless inspection to stress corrosion cracking (SCC)
It surveys incomparable important.Currently, propose detectability approval procedure in the world, for specific detection target to detecting instrument system and
Testing staff carries out integrated certification.China also introduces the detection for being directed to stress corrosion cracking (SCC) quantitative NDT in positive inquire into
Ability approval procedure, however one of its key problem in technology must just possess a large amount of typical stress corrosion cracking (SCC) test specimens.Stress corrosion
Crackle is different from other crackles, and dehiscence process is extremely complex, and its slit region has the part electricity for being weaker than basis material
Conductance, not only time and effort consuming cost is big by existing manual construction methods, but also is difficult to control the size of crackle, and it is even more impossible to realize tool
There is the artificial preparation of conductivity crackle.In conclusion exploitation size is controllable, stress corrosion cracking (SCC) of the slit region with conductivity
Test material preparation method has important practical value to stress corrosion cracking (SCC) quantitative NDT ability approval procedure system.
In consideration of it, the invention proposes with the consistent artificial stress corrosion cracking (SCC) novel preparation method of real crack form, can
To realize that the crackle to known crackle size, shape and conductivity carries out massive duplication, the stress corrosion cracking (SCC) test specimen of preparation can
For being vortexed in quantitative Nondestructive Evaluation ability approval procedure.
Summary of the invention
In order to which the size for solving difficult, the prepared crackle of above-mentioned existing artificial stress corrosion cracking (SCC) test material preparation is uncontrollable
The unknown problem with slit region conductivity, the purpose of the present invention is to provide it is a kind of with real crack form is consistent manually answers
Power corrosion cracking novel preparation method can carry out massive duplication to the stress corrosion cracking (SCC) of known crackle size and conductivity, should
Method has easy to operate, Yi Shixian, spends less, the advantage known to simulating crack size and conductivity can be widely applied to answer
In power corrosion cracking quantitative NDT ability authentication system.
To achieve the above objectives, the present invention adopts the following technical scheme:
With the consistent artificial stress corrosion cracking (SCC) novel preparation method of real crack form, include the following steps:
Step 1: true stress corrosion cracking somatometry of physique, the specific steps are as follows:
1) true stress corrosion cracking test specimen is machined, excision does not include the part of crackle, facilitates with industry
CT is scanned imaging；
2) the true stress corrosion cracking test specimen by step 1) processing carries out 3-D scanning imaging using industry CT, is answered
Power corrosion cracking aspect graph simultaneously exports；
Step 2: the artificial stress corrosion cracking (SCC) preparation based on 3D printing technique, the specific steps are as follows:
1) powder of stainless steel is chosen, and powder of stainless steel thin layer laying is made not on base flat using laser heating
Powdered steel of becoming rusty is melted, to form one thin test specimen cross section；
2) according to true stress corrosion cracking form, the shape of each laying powder of stainless steel is set, repeats step 2 step
1) operation, until the size for preparing test specimen reaches design size；
3) surface of test piece completed to the preparation of step 2 step 2) carries out grinding process, keeps surface roughness and routine stainless
The roughness of steel member is consistent, that is, obtain based on 3D printing technique preparation with the consistent stress corrosion cracking of real crack form
Line test specimen.
The 1 of step 2) described in powder of stainless steel partial size be 1-5 μm.
The 1 of step 2) described in thin test specimen cross section with a thickness of 10-20 μm.
Compared to the prior art, advantages of the present invention is as follows:
1) the method for the present invention can carry out massive duplication, we to the true stress corrosion cracking of known dimensions, conductivity
The advantages such as method has easy to operate, Yi Shixian, and processing cost is low；
2) stress corrosion cracking (SCC) test specimen prepared by the present invention has crackle size and conductivity and true stress corrosion cracking
Consistent feature can be widely used in stress corrosion cracking (SCC) quantitative NDT ability approval procedure, have general applicability.
Detailed description of the invention
Fig. 1 is stream of the present invention using 3D printing technique preparation and the consistent artificial stress corrosion cracking (SCC) of real crack form
Cheng Tu.
Fig. 2 is true stress corrosion cracking test specimen.
Fig. 3 is true stress corrosion cracking industry CT 3-D scanning result figure.
Specific embodiment
3D printing technique preparation and the consistent artificial stress corrosion cracking of real crack form are utilized as shown in Figure 1 for the present invention
The flow chart of line carries out cutting processing to true stress corrosion cracking test specimen first, rotten to the stress after processing by industry CT
Lose crackle progress 3-D scanning imaging, acquisition stress corrosion cracking (SCC) aspect graph, then using 3D printing technique processing preparation and very
The real consistent artificial stress corrosion cracking (SCC) test specimen of crack form.
The method of the present invention is described in further detail below in conjunction with Fig. 2 and Fig. 3.
Step 1: true stress corrosion cracking somatometry of physique, the specific steps are as follows:
1) true stress corrosion cracking test specimen as shown in Figure 2 being machined, excision does not include the part of crackle,
Remaining only includes the part of stress corrosion cracking (SCC), facilitates and is scanned imaging with industry CT；
2) the true stress corrosion cracking test specimen by step 1) processing carries out 3-D scanning imaging using XYLON industry CT,
For the ray tube used when scanning for refraction pipe, ray tube voltage and electric current are respectively 220kV and 0.02mA, the pixel of two dimensional image
Size is 5.2 μm, is then 10.5 μm for three-dimensional image pixel size, and amplification factor is 20.49 times, and the time of integration is set as
1000ms, image reconstruction choose 720 two dimensional images, and detector pixel matrix is 1020 × 1020, obtain stress corrosion cracking (SCC)
Aspect graph simultaneously exports, as shown in figure 3, crack width is up to 25 μm.
Step 2: the artificial stress corrosion cracking (SCC) preparation based on 3D printing technique, the specific steps are as follows:
1) suitable powder of stainless steel is chosen according to true stress corrosion cracking size, the powder of stainless steel partial size of selection is
5 μm, by powder of stainless steel thin layer laying on base flat, using the laser that laser intensity is 200W to powder of stainless steel thin layer
Carrying out heating makes its thawing, can form the test specimen cross section that a thickness is about 15 μm after cooling；
2) according to true stress corrosion cracking form as shown in Figure 3, the shape of each laying powder of stainless steel is set, weight
The operation of multiple step 2 step 1), until the size for preparing test specimen reaches design size；
3) surface of test piece completed to the preparation of step 2 step 2) carries out grinding process, makes surface roughness Ra=0.04 μ
M, it is consistent with conventional stainless steel component surface roughness, that is, obtain based on 3D printing technique preparation with real crack form
Consistent stress corrosion cracking (SCC) test specimen.
It should be understood that in step 2 step 1) processing preparation process, it will be according to specific to powder of stainless steel selection
Actual requirement and true stress corrosion cracking size select the powder of stainless steel of the different trades mark, diameter.
Claims (3)
1. with the consistent artificial stress corrosion cracking (SCC) novel preparation method of real crack form, characterized by the following steps:
Step 1: true stress corrosion cracking somatometry of physique, the specific steps are as follows:
1) true stress corrosion cracking test specimen is machined, excision do not include crackle part, facilitate with industry CT into
Row scanning imagery；
2) the true stress corrosion cracking test specimen by step 1) processing carries out 3-D scanning imaging using industry CT, and it is rotten to obtain stress
Erosion crack form figure simultaneously exports；
Step 2: the artificial stress corrosion cracking (SCC) preparation based on 3D printing technique, the specific steps are as follows:
1) powder of stainless steel is chosen, and powder of stainless steel thin layer laying is made into stainless steel using laser heating on base flat
Powder melts, to form one thin test specimen cross section；
2) according to true stress corrosion cracking form, the shape of each laying powder of stainless steel is set, repeats step 2 step 1)
Operation, until the size for preparing test specimen reaches design size；
3) surface of test piece completed to the preparation of step 2 step 2) carries out grinding process, makes surface roughness and conventional stainless steel structure
The roughness of part is consistent, that is, obtains and tried based on 3D printing technique preparation with the consistent stress corrosion cracking (SCC) of real crack form
Part.
2. the according to claim 1 and consistent artificial stress corrosion cracking (SCC) novel preparation method of real crack form, special
Sign is: the 1 of step 2) described in powder of stainless steel partial size be 1-5 μm.
3. the according to claim 1 and consistent artificial stress corrosion cracking (SCC) novel preparation method of real crack form, special
Sign is: the 1 of step 2) described in thin test specimen cross section with a thickness of 10-20 μm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933119A (en) * | 2021-09-24 | 2022-01-14 | 成都飞机工业（集团）有限责任公司 | Multilayer structure eddy current test block with fatigue cracks, manufacturing method and detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806905A (en) * | 2013-07-31 | 2014-05-21 | 中国石油大学(华东) | Device and method for establishing double-porosity carbonate reservoir physical model |
| JP2015082678A (en) * | 2013-10-21 | 2015-04-27 | 大日本印刷株式会社 | Copyright protection method and protection system for 3d printer output data |
| CN104729904A (en) * | 2015-03-31 | 2015-06-24 | 中国石油大学(华东) | Complicated rock core preparation method based on CT scanning and 3D printing |
| CN106644637A (en) * | 2016-12-15 | 2017-05-10 | 山东大学 | Pervious concrete specimen manufacturing method based on CT scanning and 3D reconstruction |
| CN106827545A (en) * | 2017-02-04 | 2017-06-13 | 山东大学 | Based on the transparent pervious concrete test specimen 3D printing method of CT scan |
| CN108436081A (en) * | 2018-03-06 | 2018-08-24 | 无锡市产品质量监督检验院 | A kind of test button 3D printing manufacturing process of preset defect |
-
2018
- 2018-11-30 CN CN201811459252.5A patent/CN109580672A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806905A (en) * | 2013-07-31 | 2014-05-21 | 中国石油大学(华东) | Device and method for establishing double-porosity carbonate reservoir physical model |
| JP2015082678A (en) * | 2013-10-21 | 2015-04-27 | 大日本印刷株式会社 | Copyright protection method and protection system for 3d printer output data |
| CN104729904A (en) * | 2015-03-31 | 2015-06-24 | 中国石油大学(华东) | Complicated rock core preparation method based on CT scanning and 3D printing |
| CN106644637A (en) * | 2016-12-15 | 2017-05-10 | 山东大学 | Pervious concrete specimen manufacturing method based on CT scanning and 3D reconstruction |
| CN106827545A (en) * | 2017-02-04 | 2017-06-13 | 山东大学 | Based on the transparent pervious concrete test specimen 3D printing method of CT scan |
| CN108436081A (en) * | 2018-03-06 | 2018-08-24 | 无锡市产品质量监督检验院 | A kind of test button 3D printing manufacturing process of preset defect |
Non-Patent Citations (1)
| Title |
|---|
| 田威 等: "基于CT扫描与3D打印技术的岩体三维重构及力学特性初探", 《岩土力学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933119A (en) * | 2021-09-24 | 2022-01-14 | 成都飞机工业（集团）有限责任公司 | Multilayer structure eddy current test block with fatigue cracks, manufacturing method and detection method |
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