CN110044667A - A kind of preparation method of composite metal plate weld decay sample - Google Patents
A kind of preparation method of composite metal plate weld decay sample Download PDFInfo
- Publication number
- CN110044667A CN110044667A CN201810041800.6A CN201810041800A CN110044667A CN 110044667 A CN110044667 A CN 110044667A CN 201810041800 A CN201810041800 A CN 201810041800A CN 110044667 A CN110044667 A CN 110044667A
- Authority
- CN
- China
- Prior art keywords
- sample
- metal plate
- composite metal
- preparation
- blank sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- 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
- G01N1/32—Polishing; Etching
-
- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
-
- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of preparation methods of composite metal plate weld decay sample, comprising: step 1 chooses the composite metal plate blank sample with welding point；The reinforcement of the weld seam of blank sample is abraded using grinding machine, and clad surface is polished by step 2；Blank sample is thinned to first thickness using planer using clad surface as datum level by step 3；Step 4 makes substrate surface upward using clamp blank sample；Fixture is installed on milling machine by step 5, and blank sample is thinned to second thickness using milling machine；Blank sample is thinned to target thickness using grinding machine by step 6, to obtain the blank sample that the ingredient of upper and lower surface is cladding compositions；The length of blank sample is cut to target length, obtains corrosion sample by step 7.Using preparation method of the invention, qualified corrosion sample can be quickly and efficiently obtained, and machining accuracy is high.
Description
Technical field
The present invention relates to the corrosive natures of welding point to examine field, welds in particular to a kind of composite metal plate
The preparation method of connector corrosion sample.
Background technique
Composite metal plate using more field first is that conveying, the field of storage of high-corrosion medium, such as oil gas
Feed-line, chemical transport and storage, desulphurization denitration pipeline etc..It is generally made of low-alloy steel and resistant material,
Common resistant material is stainless steel, nickel-base alloy and titanium alloy etc materials.In the industry of these conveying corrosive mediums, all
It needs to carry out resistant material stringent corrosion resistance test.It, can be directly according to corresponding intercrystalline corrosion for monometallic material
Or pitting test requires after being processed into sample, then carry out corrosion test can, but for composite metal plate, especially
For the welding point of composite metal plate, to obtain meet corrosion test requirement corrosion sample it is extremely difficult.This is because weldering
The structure of connector is more complicated, and weld seam includes coating weld seam, transition zone weld seam and base's weld seam, in addition between different weld seams
Interface, there are also the interfaces between weld seam and base material, and therefore, the thickness of Welded Joints corrosion sample has strict requirements.
The preparation method of traditional corrosion sample is that separation is thinned in coating by the way of common wire cutting, has base with removal
The part of weld seam and transition zone weld seam, however, the difficulty of processing of wire cutting is very high since coating thickness is very thin, it cannot be guaranteed that plus
The ingredient of the obtained cut surface of work is simple cladding compositions, can there is the gradient difference on ingredient, in acid medium, examination
Sample body forms primary battery, causes test result deviation, cannot reflect the practical corrosion resistance of cladding material.
Other than traditional wire cutting mode, Chinese patent CN102564827A is using non-test face epoxy resin sealing
Method, Chinese patent CN104458396A are prepared using the method for thermoplastic acrylic resin, dehydrated alcohol and silica solution sealing
Intercrystalline corrosion samples.Both methods is not clean by base's complete liquidation of composite metal plate, but by non-test face and rotten
Solution isolation is lost, only clad surface is immersed in etchant solution.There are two aspects in this quadrat method, first is that can not protect
The compactness combined between card separation layer and corrosion sample, second is that needing in some corrosion test standards to entire cladding material
Corrosion resistance test is carried out, does not allow that a face is isolated.
For the above problem in the presence of the prior art, a kind of new composite metal plate weld decay sample is provided
Preparation method be of great significance.
Summary of the invention
To solve the above problems, the present invention provides a kind of preparation method of composite metal plate weld decay sample,
Qualified corrosion sample can be quickly and efficiently obtained, and machining accuracy is high.
To achieve the above object, the preparation method of composite metal plate weld decay sample of the invention, the metal
Composite plate includes coating and base, and the preparation method includes:
Step 1 chooses the composite metal plate blank sample with welding point；
The reinforcement of the weld seam of the blank sample is abraded using grinding machine, and the clad surface is polished by step 2；
The blank sample is thinned to first thickness using planer using the clad surface as datum level by step 3；
Step 4 makes the substrate surface upward using blank sample described in clamp；
The fixture is installed on milling machine by step 5, and the blank sample is thinned to second thickness using the milling machine；
The fixture is unloaded from the milling machine, then is installed on grinding machine by step 6, using the grinding machine by the hair
Base sample is thinned to target thickness, to obtain the blank sample that the ingredient of upper and lower surface is cladding compositions；
The length of the blank sample is cut to target length, obtains the corrosion sample by step 7.
Preferably, the preparation method further include: polished using surface of the metallographic grinder to the corrosion sample.
Further, the metallographic grinder uses 400 mesh abrasive paper for metallograph.
Preferably, the angular deformation angle of the blank sample is less than 2 degree.
Preferably, the first thickness is 5mm.
Preferably, the fixture includes pedestal and the clamping section for being connected to the pedestal two sides, the pedestal and clamping section
Between be formed with dovetail groove；In the step 4, the blank sample, which is processed into, to be clamped in the swallow by the clamping section
The dovetail shaped of stern notch.
Further, the pedestal is connected with clamping section by fastening bolt.
Further, the pedestal includes that can be adsorbed in the magnetic portion of the milling machine and grinding machine and be connected to the magnetic
Property portion and the support portion for being used to support the blank sample.
Further, the material of the magnetic portion is carbon steel, and the material of the support portion is stainless steel.
Preferably, the second thickness and the difference of target thickness are 0.2mm.
The preparation method of composite metal plate weld decay sample of the invention, by using different machining works
The distinctive procedure of processing of the preparation method is installed into, the size of strict control corrosion sample, machining accuracy is high, and can be rapidly and efficiently
Ground obtains qualified corrosion sample, to overcome the difficult point of the corrosion sample processing of composite metal plate welding point.
Detailed description of the invention
Fig. 1 is the original state of blank sample in the preparation method of composite metal plate weld decay sample of the invention
Structural schematic diagram；
Fig. 2 is the blank in the preparation method of composite metal plate weld decay sample of the invention with first thickness
The structural schematic diagram of sample；
Fig. 3 is that blank sample is processed in swallow in the preparation method of composite metal plate weld decay sample of the invention
The structural schematic diagram of the blank sample of shape of tail；
Fig. 4 is the structure of fixture used in the preparation method of composite metal plate weld decay sample of the invention
Schematic diagram；
Fig. 5 is the assembling schematic diagram that fixture is clamped in swallow-tailed blank sample；
Fig. 6 is to have target thickness in the preparation method using composite metal plate weld decay sample of the invention
The structural schematic diagram of blank sample.
Specific embodiment
In the following, being further described in conjunction with attached drawing to structure and working principle etc. of the invention.
Composite metal plate includes coating and base, the preparation method of composite metal plate weld decay sample of the invention
It is the weld decay sample prepared only with cladding compositions, referring to FIG. 1 to FIG. 6, composite metal plate of the invention is connect
Head corrosion sample preparation method include:
Step 1 chooses the composite metal plate blank sample 10 with welding point.
Since the deviation of welding procedure causes different composite metal plates to have different welding deformations, and composite metal plate
Coating generally than relatively thin, thickness is between 1~3mm, once the deformation of test piece for welding is excessive, will be unable to the corrosion of acquisition standard
Therefore sample for some blank samples with arcuation welding point, needs to carry out pressing processing to it, to reduce blank sample
Deformation, alternatively, consider reversible deformation measure in welding, preferably, blank sample of the angular deformation angle less than 2 degree can be chosen,
Sample as corrosion sample preparation.
Fig. 1 is the structural schematic diagram of blank sample, as shown in Figure 1, the weld seam of welding point includes coating weld seam 13, transition zone
15 3 kinds of weld seams of weld seam 14 and base's weld seam, therefore, it is necessary to the thickness of strict control corrosion sample, that is, need blank sample 10
It is removed with the part of base's weld seam 15 and transition zone weld seam 14, to meet to the corrosion-resistant of 11 part of coating of composite metal plate
The thoroughly evaluating of performance.
The reinforcement of the weld seam of blank sample 10 in step 1 is abraded using grinding machine, and 11 surface of coating is ground by step 2
It is flat, using 11 surface of coating as the datum level of subsequent handling.
Step 3, will be obtained in step 2 using planer as datum level using 11 surface of coating obtained in step 2
Blank sample 10 is thinned to first thickness t1.Fig. 2 is the structural schematic diagram for being thinned to the blank sample of first thickness, as shown in Fig. 2, should
Step is carried out using base 12 of the planer to blank sample 10 thinned.Preferably, above-mentioned first thickness t1It is controllable to 5mm.
Step 4 makes 12 surface of base upward using clamp blank sample 10.The corrosion sample of standard in order to obtain,
It needs for the thickness of blank sample 10 obtained in step 3 to be thinned again, due to needing thinned thickness very little, in order to improve sample
Precision is prepared, above-mentioned blank sample 10 can be clamped on fixture, to avoid the movement of blank sample 10 in thinning process, to reduce
Mismachining tolerance.
The fixture for clamping blank sample 10 is installed on milling machine by step 5, using milling machine by blank sample 10 from 12 table of base
Face is thinned to second thickness.Since milling machine is higher than the machining accuracy of planer and high-efficient, it is carried out in the step using milling machine
It is thinned, and in step 3, need thinned thickness larger, required precision is not high, in order to save processing cost, uses in step 3
Planer carries out thinned.Preferably, above-mentioned second thickness is controllable to thicker than the target thickness of corrosion sample to be prepared
The difference of 0.2mm, i.e. second thickness and target thickness are 0.2mm.
Fixture is unloaded from milling machine, then is installed on grinding machine by step 6, and blank sample 10 is thinned to target using grinding machine
Thickness t, to obtain the blank sample that the ingredient of upper and lower surface is cladding compositions, at this point, as shown in fig. 6, having blank sample 10
There is the removal of the part of base's weld seam 15 and transition zone weld seam 14.It is processed using grinding machine, the upper surface of blank sample 10 can be made to become
It obtains smooth.
Welding point includes weld seam, fusion area and heat affected area, and different welding methods will cause fusion area and heat affecting
The range in area is different, and therefore, the target thickness t of above-mentioned corrosion sample can be different according to different welding methods, should
Guarantee the comprehensive of Welded Joints coating portion corrosion resistance evaluation, avoids base's weld seam 15, transition zone weld seam 14 again
Influence to 13 corrosion resistance of coating weld seam.
The minimum value of target thickness t and the calculation formula of maximum value of corrosion sample are respectively as follows:
tmin=0.5Tciad,
tmax=η Tciad,
Wherein, tminFor the minimum value of target thickness t；tmaxFor the maximum value of target thickness t；TciadFor composite metal plate
11 thickness of coating；η is the welding method factor, for example, the welding method factor of argon arc welding takes 70~75%, the welding side of gas shield welding
The method factor takes 65~70%, and the welding method factor of submerged-arc welding takes 60~65%.
The length of blank sample 10 is cut to target length, obtains corrosion sample by step 7.
In order to improve the surface flatness of corrosion sample obtained above, above-mentioned preparation method may also include is ground using metallographic
Grinding machine polishes to the surface of corrosion sample, wherein 400 mesh abrasive paper for metallograph can be used in metallographic grinder.
The structure of the fixture used in above-mentioned preparation method can there are many selections, referring to fig. 4, a kind of knot as fixture
Structure, the fixture include pedestal 20 and the clamping section 30 for being connected to 20 two sides of pedestal, are formed with swallow between pedestal 20 and clamping section 30
Stern notch 40；Referring to Fig. 3 and Fig. 5 is combined, in step 4, can be processed into blank sample 10 can be clamped in swallow by above-mentioned clamping section 30
The dovetail shaped of stern notch 40.There is inclined surface in the both ends of swallow-tailed blank sample 10, it is preferable that the tilt angle of the inclined surface is
40~50 degree, it is lateral by enough power can to guarantee the blank sample 10, thus prevent blank sample 10 from horizontally slipping, meanwhile,
Also ensure the blank sample 10 in the vertical direction by enough power, thus prevent with milling machine or grinding machine to blank sample into
When row processing, blank sample 10 is carried over fixture.
As shown in figure 5, pedestal 20 and clamping section 30 are connected by fastening bolt 50, when needing blank sample 10 being packed into fixture
When, it needs first first to unscrew fastening bolt 50 so that blank sample 10 is packed into dovetail groove 40, then again tightens fastening bolt 50, so that
Blank sample 10 is clamped in dovetail groove 40 by clamping section 30.
Also there are many selections for the structure of above-mentioned pedestal 20, as shown in figure 4, pedestal 20 includes that can inhale as a kind of mode
It invests the magnetic portion 21 of milling machine and grinding machine and is connected to magnetic portion 21 and is used to support the support portion 22 of blank sample 10.Wherein,
Magnetic portion 21 and support portion 22 are connected by fastening bolt 23.
The preparation method of composite metal plate weld decay sample of the invention is that only have metal composite preparation to cover
The weld decay sample of composition of layer avoids 15 weld seam of base and transition zone weld seam 14 to the corrosion resistance of coating weld seam 13
Influence, therefore, when blank sample 10 to be installed on fixture, the selection of the material of support portion 22 also be there are certain requirements, as excellent
Choosing, the material of magnetic portion 21 are selected as carbon steel, fixture can be adsorbed on milling machine or grinding machine well；The material of support portion 22 is then
It is selected as stainless steel, support portion 22 is directly contacted with 11 surface of coating of blank sample 10, can avoid other materials using stainless steel
The corrosion resistance of gained corrosion sample is contacted and influenced with 11 surface of coating.
The preparation method of composite metal plate weld decay sample of the invention, by using different machining works
The distinctive procedure of processing of the preparation method is installed into, the size of strict control corrosion sample, machining accuracy is high, and can be rapidly and efficiently
Ground obtains qualified corrosion sample, to overcome the difficult point of the corrosion sample processing of composite metal plate welding point.
More than, schematic description only of the invention, it will be recognized by those skilled in the art that without departing from work of the invention
On the basis of making principle, a variety of improvement can be made to the present invention, this is all belonged to the scope of protection of the present invention.
Claims (10)
1. a kind of preparation method of composite metal plate weld decay sample, the composite metal plate includes coating and base,
It is characterized in that, the preparation method includes:
Step 1 chooses the composite metal plate blank sample with welding point；
The reinforcement of the weld seam of the blank sample is abraded using grinding machine, and the clad surface is polished by step 2；
The blank sample is thinned to first thickness using planer using the clad surface as datum level by step 3；
Step 4 makes the substrate surface upward using blank sample described in clamp；
The fixture is installed on milling machine by step 5, and the blank sample is thinned to second thickness using the milling machine；
The fixture is unloaded from the milling machine, then is installed on grinding machine by step 6, using the grinding machine by the blank sample
It is thinned to target thickness, to obtain the blank sample that the ingredient of upper and lower surface is cladding compositions；
The length of the blank sample is cut to target length, obtains the corrosion sample by step 7.
2. the preparation method of composite metal plate weld decay sample as described in claim 1, which is characterized in that the system
Preparation Method further include: polished using surface of the metallographic grinder to the corrosion sample.
3. the preparation method of composite metal plate weld decay sample as claimed in claim 2, which is characterized in that the gold
Phase grinding machine uses 400 mesh abrasive paper for metallograph.
4. the preparation method of composite metal plate weld decay sample as described in claim 1, which is characterized in that the hair
The angular deformation angle of base sample is less than 2 degree.
5. the preparation method of composite metal plate weld decay sample as described in claim 1, which is characterized in that described
One with a thickness of 5mm.
6. the preparation method of composite metal plate weld decay sample as described in claim 1, which is characterized in that the folder
Tool includes pedestal and the clamping section for being connected to the pedestal two sides, is formed with dovetail groove between the pedestal and clamping section；It is described
In step 4, the blank sample is processed into the dovetail shaped that the dovetail groove can be clamped in by the clamping section.
7. the preparation method of composite metal plate weld decay sample as claimed in claim 6, which is characterized in that the bottom
Seat is connected with clamping section by fastening bolt.
8. the preparation method of composite metal plate weld decay sample as claimed in claim 6, which is characterized in that the bottom
Seat includes that can be adsorbed in the magnetic portion of the milling machine and grinding machine and be connected to the magnetic portion and be used to support the blank
The support portion of sample.
9. the preparation method of composite metal plate weld decay sample as claimed in claim 8, which is characterized in that the magnetic
Property portion material be carbon steel, the material of the support portion is stainless steel.
10. the preparation method of composite metal plate weld decay sample as described in claim 1, which is characterized in that described
Second thickness and the difference of target thickness are 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041800.6A CN110044667B (en) | 2018-01-16 | 2018-01-16 | Preparation method of corrosion sample for metal composite plate welding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041800.6A CN110044667B (en) | 2018-01-16 | 2018-01-16 | Preparation method of corrosion sample for metal composite plate welding joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110044667A true CN110044667A (en) | 2019-07-23 |
| CN110044667B CN110044667B (en) | 2021-07-16 |
Family
ID=67273432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810041800.6A Active CN110044667B (en) | 2018-01-16 | 2018-01-16 | Preparation method of corrosion sample for metal composite plate welding joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110044667B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118321853A (en) * | 2024-06-12 | 2024-07-12 | 南通安思卓新能源有限公司 | Processing method of round frame of electrolytic tank of hydrogen production equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067936A (en) * | 1992-06-26 | 1994-01-18 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of pipe sample generating scc |
| CN101236142A (en) * | 2007-02-02 | 2008-08-06 | 同济大学 | Nanometer thin film transmission electron microscope sample preparation method |
| CN101592569A (en) * | 2009-06-23 | 2009-12-02 | 武汉钢铁(集团)公司 | A kind of job operation of standard impact test sample with Charpy V-notch |
| CN101633074A (en) * | 2009-07-16 | 2010-01-27 | 西安交通大学 | Welding method of girth weld of inner cladding thin-walled stainless steel composite tube |
| JP2010151679A (en) * | 2008-12-25 | 2010-07-08 | Polyplastics Co | Internal texture observation method of resin molding |
| CN101957281A (en) * | 2010-10-08 | 2011-01-26 | 洛阳双瑞金属复合材料有限公司 | Method for preparing metal composite material bonding interface separated sample |
| CN102426120A (en) * | 2011-08-30 | 2012-04-25 | 上海华碧检测技术有限公司 | Manufacturing method of material tensile sample |
| KR20150019719A (en) * | 2013-08-14 | 2015-02-25 | 국립대학법인 울산과학기술대학교 산학협력단 | Method for producing samples for transmission electron microscopy using tripod polishing and focused ion beam |
-
2018
- 2018-01-16 CN CN201810041800.6A patent/CN110044667B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067936A (en) * | 1992-06-26 | 1994-01-18 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of pipe sample generating scc |
| CN101236142A (en) * | 2007-02-02 | 2008-08-06 | 同济大学 | Nanometer thin film transmission electron microscope sample preparation method |
| JP2010151679A (en) * | 2008-12-25 | 2010-07-08 | Polyplastics Co | Internal texture observation method of resin molding |
| CN101592569A (en) * | 2009-06-23 | 2009-12-02 | 武汉钢铁(集团)公司 | A kind of job operation of standard impact test sample with Charpy V-notch |
| CN101633074A (en) * | 2009-07-16 | 2010-01-27 | 西安交通大学 | Welding method of girth weld of inner cladding thin-walled stainless steel composite tube |
| CN101957281A (en) * | 2010-10-08 | 2011-01-26 | 洛阳双瑞金属复合材料有限公司 | Method for preparing metal composite material bonding interface separated sample |
| CN102426120A (en) * | 2011-08-30 | 2012-04-25 | 上海华碧检测技术有限公司 | Manufacturing method of material tensile sample |
| KR20150019719A (en) * | 2013-08-14 | 2015-02-25 | 국립대학법인 울산과학기술대학교 산학협력단 | Method for producing samples for transmission electron microscopy using tripod polishing and focused ion beam |
Non-Patent Citations (2)
| Title |
|---|
| 胡伟 等: "N08825镍铁基合金焊接接头服役寿命影响因素", 《石油工程建设》 * |
| 邱涛 等: "不锈钢复合钢板焊接接头性能分析", 《电焊机》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118321853A (en) * | 2024-06-12 | 2024-07-12 | 南通安思卓新能源有限公司 | Processing method of round frame of electrolytic tank of hydrogen production equipment |
| CN118321853B (en) * | 2024-06-12 | 2024-09-27 | 南通安思卓新能源有限公司 | Processing method of round frame of electrolytic tank of hydrogen production equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110044667B (en) | 2021-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109332993A (en) | A kind of welding repair method of thin wall vane structure | |
| Klocke et al. | Developments in wire-EDM for the manufacturing of fir tree slots in turbine discs made of Inconel 718 | |
| CN106840789B (en) | Improved test piece for oblique Y-shaped groove welding crack sensitivity test and manufacturing method thereof | |
| CN104625456A (en) | Manufacturing method of restrained weld joint for oblique Y-shaped groove welding crack test | |
| CN110369837A (en) | A kind of welding procedure of super-duplex stainless steel and super austenitic stainless steel | |
| CN110026645A (en) | The T-type welding method and T connector of composite plate | |
| US20120325898A1 (en) | Method for repairing a welded connection | |
| CN110044667A (en) | A kind of preparation method of composite metal plate weld decay sample | |
| CN110039243A (en) | A kind of anti-deformation tool suitable for plate sheet welding | |
| CN107984177B (en) | Split Casing simulating piece processing method | |
| CN104764685A (en) | Intercrystalline corrosion test method of thin-wall clad pipe with inside coated with corrosion resistant alloy | |
| CN111408963A (en) | Machining and inspecting tool and method for fan-shaped thrust block of diesel engine | |
| CN203190915U (en) | General inspection tool | |
| CN2333484Y (en) | Multi-functional valve grinder | |
| CN105081705B (en) | The preparation method of high pressure nitrogen spheric holder | |
| CN110026648A (en) | The butt welding method and interfacing part of two phase stainless steel and composite plate | |
| CN108555534A (en) | A kind of valve body machining process | |
| CN212159663U (en) | Eddy current array probe suitable for inspection of angular piece | |
| CN213238728U (en) | High-precision limiting and fixing test fixture for heat shield of new energy automobile | |
| Boehm | Hybrid manufacturing of turbine components: laser metal deposition (LMD) and adaptive repair for higher precision and shorter production time | |
| CN207751817U (en) | The performance testing device of cutter after a kind of reconditioning | |
| CN109304585A (en) | A kind of valve body processing method | |
| Abe et al. | Manufacturing study and trial fabrication of radial plate for ITER toroidal field coil | |
| CN219454930U (en) | Auxiliary fixture for measuring weld seam recession | |
| CN208961022U (en) | Modified form knife handle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |