CN108406223A - A kind of welding repair method and device of thin wall component - Google Patents
A kind of welding repair method and device of thin wall component Download PDFInfo
- Publication number
- CN108406223A CN108406223A CN201810376026.4A CN201810376026A CN108406223A CN 108406223 A CN108406223 A CN 108406223A CN 201810376026 A CN201810376026 A CN 201810376026A CN 108406223 A CN108406223 A CN 108406223A
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- China
- Prior art keywords
- welding
- thin wall
- wall component
- jig
- repair
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
- B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of welding repair method of thin wall component and its devices, including carrying out preheating and anti-Overheating Treatment to thin wall component, in one layer of low-melting-point metal thin slice of back side rolling or bonding of thin wall component weld, utilize metal molten latent heat of phase change unstable state local heat absorption principle, it realizes the efficient cooling of parts locally, and then thin wall component is prevented excessively to be heated in the welding process and occur deforming or burning phenomenon.
Description
Technical field
The present invention relates to aviation part reparation and processing technique fields, and in particular to a kind of REPAIR WELDING of thin wall component
Method and device.
Background technology
With the rapid development of aviation industry, component increasingly tends to large-scale integration, thin-wall light-weighted, complex-shapedization,
And meet the requirement of high-performance and low cost.If most of parts in engine or fuel tank are large thin-wall class
Part, working environment is severe, often by high-temperature fuel gas, wind erosion abrasion and compression shock equivalent damage.Due to most of zero
Part cost is higher, and the process-cycle is longer, therefore can be enterprise reduce great amount of cost for use after damaged parts are directly repaired.
The common restorative procedure of thin wall component has the working processes such as laser melting coating, thermal spraying and welding, but due to thin
Wall class part thickness is inadequate, is often excessively heated in processing repair process and thermal deformation occurs and burn phenomenon, seriously affects
The size of part, so as to cause not met using standard after part reparation.
The mode of mechanical grip is mostly used greatly in existing REPAIR WELDING treatment process and provides stability for part, is prevented simultaneously
Only part is deformed in welding, but this mode can only ensure that part is small close to the local deflection of holding position, can not
It prevents excessively heated caused deformation and burns phenomenon.
Invention content
The purpose of the present invention is to provide a kind of welding repair method of thin wall component and its devices, can prevent part from existing
Occur deforming or burning phenomenon because being excessively heated during high-temperature soldering.
The purpose of the present invention is what is be achieved through the following technical solutions：A kind of welding repair method of thin wall component includes
Following steps：
(1) surface clean：Piece surface is cleaned using fluorine ion；
(2) crack detection：Crack detection is carried out to part according to liquid penetrant inspection standard, then uses acetone or alcohol
Solution wipes the welding surface of part；
(3) the pre-heat treatment：150~220 DEG C will be integrally preheated to after part wiped clean, part is then mounted on welding
Surface overlaying is carried out on platform, welding rod first passes through 300~350 DEG C and bakes slow cooling again after 1h before built-up welding；
(4) anti-Overheating Treatment：In one layer of low-melting-point metal thin slice of back side rolling or bonding of part weld, part is prevented
It is excessively heated in the welding process to occur deforming or burn；
(5) cladding is welded：The gradient for adjusting jig carries out cladding welding to part；
(6) vacuum annealing process：Part after cladding is welded, which is placed in vacuum drying oven, carries out vacuum heat, removal welding
Stress；
(7) standard test：Hardness, size and bead crack inspection are carried out to part, checks whether and complies with standard.
Further, the liquid penetrant inspection in step (2) is fluorescent solutions penetration inspection.
Further, the low-melting-point metal thin slice in step (4) is aluminum or aluminum alloy thin slice.
A kind of REPAIR WELDING device of thin wall component, including pedestal and jig, the upper surface side setting of pedestal
There are boss, the other side that slide is installed, boss is provided with inclined-plane, the bottom of the jig and boss close to the side of slide
Inclined-plane it is hinged, welding hole is provided on jig, both sides are slidably mounted with loading plate at the welding hole of jig, institute
It states and sliding block is installed on slide, cradling piece is hinged on sliding block, one end of cradling piece and jig are hinged.
Further, the cross sectional shape of the loading plate is T shapes, and bearing groove is provided on the inside of loading plate, loading plate
Outside is provided with draw ring.
Further, the back side of the jig is fixed with cylinder, and shaft, described cradling piece one end are combined in cylinder
It is fixedly connected with shaft.
Further, it is provided with placing groove in the pedestal.
The present invention utilizes gold by rolling or bonding one layer of low-melting-point metal thin slice in the back side of thin wall component weld
Belong to fusing latent heat of phase change unstable state local heat absorption principle, realizes the efficient cooling of parts locally, and then prevent thin wall zero
Part is excessively heated in the welding process and occurs deforming or burning phenomenon.
Description of the drawings
Fig. 1 is the structural schematic diagram of the REPAIR WELDING device of the thin wall component of the present invention；
Fig. 2 is the structural schematic diagram of loading plate in apparatus of the present invention.
It is marked in figure：1- pedestals；2- jigs；3- loading plates；4- welding holes；5- slides；6- sliding blocks；7- cradling pieces；
8- boss；9- placing grooves；31- bearing grooves；32- draw rings.
Specific implementation mode
As depicted in figs. 1 and 2, the REPAIR WELDING device of thin wall component provided in this embodiment includes pedestal 1 and welding
The upper surface side of platform 2, pedestal 1 is provided with boss 8, and the other side is equipped with slide 5, and boss 8 is arranged close to the side of slide 5
There are inclined-plane, the bottom of the jig 2 to be hinged on the inclined-plane of boss 8；Welding hole 4, thin wall zero are provided on jig 2
Part is placed on 2 surface of jig at welding hole 4 and is welded, and the both sides at welding hole 4 are slidably mounted with carrying
The cross sectional shape of plate 3, loading plate 3 is T shapes, and the inside of loading plate 3 is provided with bearing groove 31, can be used for carrying thin wall component,
The outside of loading plate 3 is provided with draw ring 32, according to the length of part, pulls draw ring 32, adjust that two pieces of loading plates 3 are spaced away from
From.
Sliding block 6 is installed on the slide 5, the back side of jig 2 is fixed with cylinder, shaft is combined in cylinder, this
In embodiment, the both sides of sliding block 6 are hinged with cradling piece 7, and one end of two cradling pieces 7 is fixed with the both ends of shaft respectively to be connected
It connects, pushes sliding block 6, and then adjust the angle of inclination of jig 2.It is provided with placing groove 9 in the pedestal 1, can be used for placing weldering
The tools such as rifle, welding rod.
The welding repair method of thin wall component provided in this embodiment includes the following steps：
(1) surface clean：First piece surface is cleaned using fluorine ion.Extremely due to thin wall component operating condition
Badly, surface can adhere to oxide, sulfide and carbide of some more difficult removals etc., common acids alkaline cleaner to oxide,
The removal effects such as sulfide and carbide are little.And oxide, the sulfide that piece surface adheres to can be made using gas phase fluorine ion
It is cleaned up with carbide, among thin wall component is specifically exposed to high-purity hydrogen fluoride and hydrogen at 1000 DEG C, fluorine
Ion reacts to form fluoride with oxide, sulfide and carbide and metal (titanium, aluminium and yttrium), meanwhile, oxygen and hydrogen are then anti-
Vapor should be formed, the thin wall component on high cleanliness surface is finally obtained；
(2) crack detection：According to fluorescent solutions penetration inspection standard, that is, ASTM E1417Type 1, Method A, B or
3 standard of D, Level checks uses the welding of acetone or alcoholic solution to part after the cracks of part, crackle comply with standard
Surface is wiped；
(3) the pre-heat treatment：150~220 DEG C will be integrally preheated to after part wiped clean, the present embodiment is preferably 200 DEG C,
Then part is mounted at the welding hole 4 of jig 2 and first carries out surface overlaying.Welding rod uses J506 welding rod, is welded before built-up welding
Item first passes through 300~350 DEG C of baking 1h, and the present embodiment is preferably baked in the environment of 320 DEG C, placed on cotton-wadded quilt after baking
Carry out slow cooling.Since J506 welding rod phosphorus content, alloying element content are relatively low, linear expansion coefficient is smaller, is not likely to produce weld defect,
It can prevent heap postwelding from the phenomenon that overlay cladding peeling occur after J506 welding rod is anticipated simultaneously；In addition, pre-setting overlay cladding
It can make to be further reduced welding stress, and then reduce the generation of weld seam with welding rod material similar performance at welding cladding；
(4) anti-Overheating Treatment：In one layer of low-melting-point metal thin slice of back side rolling or bonding of part weld, low melting point gold
Category thin slice is aluminum or aluminum alloy thin slice, prevents part from occurring deforming or burning phenomenon because excessively heated in the welding process.Specifically
Ground, it is thickness about 5mm that aluminum or aluminum alloy plate, which is rolled, the sheet metal that shape matches with thin wall component back side shape, so
Aluminum or aluminum alloy thin slice is placed in the bearing groove 31 of 3 inside of loading plate afterwards, sheet metal can not only carry for thin wall component
For rigid support, and when welding heat is transmitted on aluminum or aluminum alloy thin slice and reaches its melting temperature, aluminum or aluminum alloy is thin
Piece will absorb amount of heat rapidly by its sizable latent heat of fusion, realize the fast quickly cooling of thin wall component weld
But, to prevent from occurring deforming or burning phenomenon after part is excessively heated；
(5) cladding is welded：Sliding slider 6 adjusts the gradient of jig 2, and cladding welding is carried out to part.It was welding
Cheng Zhongwei reaches higher weld strength, and operator can adjust always the angle of welding, therefore operator can continuous map function
Position may require that operator itself has higher skill, by pushing sliding block 6, to adjust the position of thin wall component in this way
It sets, requirement of the operator to welding surroundings can be reduced, improve the quality and quality of welding；
(6) vacuum annealing process：Part after cladding is welded, which is placed in vacuum drying oven, carries out vacuum heat, removal welding
Stress.Since the heating room of vacuum heat treatment furnace is nearly at vacuum state at work, there is only micro carbon monoxide and
Hydrogen etc., and carbon monoxide and hydrogen have reproducibility to the metal of heating, will not make piece surface that oxidation and decarbonization occur anti-
It answers, while the established oxidation film reduction of piece surface can also be made, the piece surface after heating can be made to keep original metal light
Damp and good surface property；
(7) standard test：Hardness, size and bead crack inspection are carried out to part, checks whether and meets using standard.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The transformation and replacement that are carried out based on technical solution provided by the present invention and inventive concept should all cover the protection model in the present invention
In enclosing.
Claims (7)
1. a kind of welding repair method of thin wall component, it is characterised in that include the following steps：
(1) surface clean：Piece surface is cleaned using fluorine ion；
(2) crack detection：Crack detection is carried out to part according to liquid penetrant inspection standard, then uses acetone or alcoholic solution
The welding surface of part is wiped；
(3) the pre-heat treatment：150~220 DEG C will be integrally preheated to after part wiped clean, part is then mounted on jig
Upper carry out surface overlaying, welding rod first passes through 300~350 DEG C and bakes slow cooling again after 1h before built-up welding；
(4) anti-Overheating Treatment：In one layer of low-melting-point metal thin slice of back side rolling or bonding of part weld, prevent part from welding
It is excessively heated in termination process and deforms or burn；
(5) cladding is welded：The gradient for adjusting jig carries out cladding welding to part；
(6) vacuum annealing process：Part after cladding is welded, which is placed in vacuum drying oven, carries out vacuum heat, and removal welding is answered
Power；
(7) standard test：Hardness, size and bead crack inspection are carried out to part, checks whether and complies with standard.
2. the welding repair method of thin wall component according to claim 1, it is characterised in that：Liquid in step (2)
Penetration inspection is fluorescent solutions penetration inspection.
3. the welding repair method of thin wall component according to claim 1, it is characterised in that：Eutectic in step (4)
Point sheet metal is aluminum or aluminum alloy thin slice.
4. a kind of REPAIR WELDING device of thin wall component, it is characterised in that：Including pedestal and jig, the upper surface of pedestal
Side is provided with boss, and the other side is equipped with slide, and boss is provided with inclined-plane, the bottom of the jig close to the side of slide
The inclined-plane of portion and boss is hinged, welding hole is provided on jig, both sides are slidably mounted at the welding hole of jig
Loading plate is equipped with sliding block on the slide, and cradling piece is hinged on sliding block, and one end of cradling piece and jig are hinged.
5. the REPAIR WELDING device of thin wall component according to claim 4, it is characterised in that：The section of the loading plate
Shape is T shapes, and bearing groove is provided on the inside of loading plate, and draw ring is provided on the outside of loading plate.
6. the REPAIR WELDING device of thin wall component according to claim 4, it is characterised in that：The back of the body of the jig
Side is fixed with cylinder, and shaft is combined in cylinder, and described cradling piece one end is fixedly connected with shaft.
7. the REPAIR WELDING device of thin wall component according to claim 4, it is characterised in that：It is provided with and puts in the pedestal
Set slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376026.4A CN108406223B (en) | 2018-04-25 | 2018-04-25 | Welding repair method and device for thin-wall parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376026.4A CN108406223B (en) | 2018-04-25 | 2018-04-25 | Welding repair method and device for thin-wall parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108406223A true CN108406223A (en) | 2018-08-17 |
| CN108406223B CN108406223B (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810376026.4A Active CN108406223B (en) | 2018-04-25 | 2018-04-25 | Welding repair method and device for thin-wall parts |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633374A (en) * | 2020-06-01 | 2020-09-08 | 湖北三江航天江北机械工程有限公司 | Method for repairing damage inside attitude control engine combustion chamber shell |
| CN114324380A (en) * | 2021-12-03 | 2022-04-12 | 南京迪威尔高端制造股份有限公司 | Permeation detection system and permeation detection method for inner hole surfacing layer of underwater oil extraction forge piece |
| WO2024045667A1 (en) * | 2022-08-27 | 2024-03-07 | 中国长江电力股份有限公司 | Method for repairing babbitt metal bearing by means of laser cladding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633374A (en) * | 2020-06-01 | 2020-09-08 | 湖北三江航天江北机械工程有限公司 | Method for repairing damage inside attitude control engine combustion chamber shell |
| CN114324380A (en) * | 2021-12-03 | 2022-04-12 | 南京迪威尔高端制造股份有限公司 | Permeation detection system and permeation detection method for inner hole surfacing layer of underwater oil extraction forge piece |
| WO2024045667A1 (en) * | 2022-08-27 | 2024-03-07 | 中国长江电力股份有限公司 | Method for repairing babbitt metal bearing by means of laser cladding |
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