CN110331359A - A kind of surface treatment method for thermal spraying inorganic coating - Google Patents
A kind of surface treatment method for thermal spraying inorganic coating Download PDFInfo
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- CN110331359A CN110331359A CN201910741146.4A CN201910741146A CN110331359A CN 110331359 A CN110331359 A CN 110331359A CN 201910741146 A CN201910741146 A CN 201910741146A CN 110331359 A CN110331359 A CN 110331359A
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- Prior art keywords
- workpiece
- coating
- thermal spraying
- inorganic coating
- spraying
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Chemical & Material Sciences (AREA)
- Coating By Spraying Or Casting (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention relates to technical field of hot, and disclose a kind of surface treatment method for thermal spraying inorganic coating, include the following steps: that S1. workpiece prepares, is applicable in matched workpiece according to size, quality and choice of material and distinguishes separated multiple groups by five one group of quantity；S2. workpiece pre-processes, the workpiece of selection is put into cutting numerically-controlled machine tool, polishing processing is carried out to the surface of workpiece, grinding workpieces are cut into the workpiece of certain size volume, remove the original various spray coatings retained of workpiece surface, and will uniformly be removed at the dented damage of workpiece surface with burr, so that workpiece surface is uniform and smooth, to meet the spraying of subsequent inorganic coating.This is used for the surface treatment method of thermal spraying inorganic coating, has so that the advantages of inorganic coating of workpiece surface coating has better sealing, makes it have better anticorrosive property.
Description
Technical field
The present invention relates to technical field of hot, specially a kind of surface treatment method for thermal spraying inorganic coating.
Background technique
Preparing the inorganic coatings such as oxide in metal surface using plasma spray technology is a kind of common surfacecti proteon processing
Method.The inorganic coating of acquisition can utilize its function such as wear-resistant, anticorrosive and heat-insulated.
Thermal spraying refers to a series of processes, during these, subtle and dispersion metal or nonmetallic coating material,
With a kind of fusing or semi-molten state, a kind of matrix surface by preparation is deposited to, certain spray deposited layer is formed, it is benefit
Powdered or Filamentous metal or nonmetallic materials are heated with certain heat source (such as electric arc, plasma spraying or combustion flame)
To melting or semi-molten state, then itself or compressed air is stayed to be ejected into pretreated matrix table with certain speed by flame
Face, a kind of technology of deposition and surface covering of the formation with various functions.
The main function of thermal spraying is that metal spraying is increased the hardness and wear-resisting property of workpiece surface in workpiece surface,
The maintenance for reducing machinery equipment, can be improved the utilization rate of equipment, and thermal spraying is mainly used for axis or the hole of rotation.
Inorganic coating has biggish porosity to current thermal spraying inorganic coating after use, so that inorganic coating is anti-
Corrosivity is limited, cannot effectively be protected workpiece.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of surface treatment method for thermal spraying inorganic coating,
Have so that the inorganic coating of workpiece surface coating has a better sealing, the advantages of making it have better anticorrosive property,
Solving current thermal spraying inorganic coating, inorganic coating has biggish porosity after use, so that the anti-corruption of inorganic coating
The problem of corrosion is limited, cannot effectively be protected workpiece.
(2) technical solution
To realize so that the inorganic coating of workpiece surface coating makes it have better anticorrosion with better sealing
The purpose of property, the invention provides the following technical scheme: a kind of surface treatment method for thermal spraying inorganic coating, including it is as follows
Step:
S1. workpiece prepares
It is separated more by five one group of quantity difference that matched workpiece is applicable according to size, quality and choice of material
Group；
S2. workpiece pre-processes
The workpiece of selection is put into cutting numerically-controlled machine tool, polishing processing is carried out to the surface of workpiece, grinding workpieces are cut
It is whittled into the workpiece of certain size volume, removes the original various spray coatings retained of workpiece surface, and the recess of workpiece surface is damaged
Injury and burr are uniformly removed, so that workpiece surface is uniform and smooth, to meet the spraying of subsequent inorganic coating；
S3. workpiece surface is except dirty
The workpiece that polishing has been cut is put into the service sink containing 50% mass fraction sodium hydroxide solution, impregnates one section
Time, the greasy dirt for workpiece surface adherency of going out under the immersion of sodium hydroxide solution, then workpiece taking-up is put into chemical de-rusting liquid
In, derusting operation is carried out to the surface of workpiece, takes out and dries after being soaked for a period of time, progress surface essence in sander is placed into and removes
The dirt of workpiece surface attachment is removed, removes the dirt of workpiece surface, reuse ejected wash water and spray to the surface of workpiece by rust
Leaching processing, it is dirty to remove surface；
S3. workpiece bulk processing
It will be put into sand-blasting machine except the workpiece after dirty, blasting treatment carried out to the surface of workpiece, is realized to workpiece surface
Roughening treatment, so that subsequent spraying is stronger, is increased between coating and workpiece with increasing the contact surface between coating and substrate
Bonding strength；
S4. transition zone is sprayed
The tie coat that viscosity is good between a kind of and workpiece and sprayed on material is selected, so that the subsequent bad spraying material being adhered
Expect that can be consolidated sprays in workpiece surface；
S5. workpiece is dried
The workpiece for having sprayed tie coat is put into drying box, is heated by drying box the moisture of workpiece surface is complete
Removal, and pre-heat effect is opened, avoid subsequent high temperature spraying from being easy so that workpiece generates the effect expanded with heat and contract with cold and is easy to workpiece
Damaging influences workpiece coating quality；
S6. thermal spraying treatment
Thermal spraying operation is carried out to workpiece surface using the method for high speed flame spraying, encapsulation process agent is uniformly coated
In workpiece surface, coating work is completed, then the workpiece after the completion of coating is subjected to heating, drying by air blast air-heater；
S7. coating post-processes
Coating sealing reagent is uniformly coated in workpiece surface, so that the inside that coating sealing reagent uniformly blocks coating is empty
In gap, then workpiece taking-up is put into drying box and carries out drying operation, workpiece to the end is obtained with this.
Preferably, the time that workpiece impregnates in sodium hydroxide solution in the S3 is 10-15min.
Preferably, thermal spraying operates until the thickness of workpiece surface is greater than 3mm in the S6.
Preferably, the temperature that thermal spraying treatment control heating sprays in the S6 is in 1200 DEG C to 1350 DEG C.
Preferably, the operation of the S7 repeats at least three times.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of surface treatment method for thermal spraying inorganic coating, have
Below the utility model has the advantages that
1, the surface treatment method for being used for thermal spraying inorganic coating, is pre-processed by workpiece, and the workpiece of selection is put into
It cuts in numerically-controlled machine tool, polishing processing is carried out to the surface of workpiece, grinding workpieces are cut into the workpiece of certain size volume, clearly
The various spray coatings retained except workpiece surface is original, and will uniformly be removed at the dented damage of workpiece surface with burr, it can
So that workpiece surface is uniform and smooth, to meet the accurate requirement of the spraying of subsequent inorganic coating, so that the spray of subsequent inorganic coating
Apply it is more uniform comprehensively, adhesiveness is more preferable.
2, the surface treatment method for being used for thermal spraying inorganic coating has cut polishing by workpiece surface except dirty
Workpiece is put into the service sink containing 50% mass fraction sodium hydroxide solution, is soaked for a period of time, in sodium hydroxide solution
Go out under immersion workpiece surface adherency greasy dirt, then by workpiece taking-up be put into chemical de-rusting liquid, the surface of workpiece is removed
Rust operation, takes out after being soaked for a period of time and dries, and places into progress surface essence derusting in sander, the dirt that workpiece surface is adhered to
Object removal, removes the dirt of workpiece surface, reuses ejected wash water and carries out spray process to the surface of workpiece, and removing surface is dirty,
Enable to the surface of workpiece clean, avoid dirt from retaining so that inorganic coating can not be coated uniformly on workpiece surface be easy
Existing uneven problem.
3, the surface treatment method for being used for thermal spraying inorganic coating, is post-processed by coating, and coating sealing reagent is uniform
Be coated in workpiece surface so that coating sealing reagent is uniformly blocked in the internal voids of coating, then workpiece taking-up is put into baking
Drying operation is carried out in dry case, so that the inorganic coating of workpiece surface coating has better sealing, is made it have preferably
Anticorrosive property.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
A kind of surface treatment method for thermal spraying inorganic coating, includes the following steps:
S1. workpiece prepares
It is separated more by five one group of quantity difference that matched workpiece is applicable according to size, quality and choice of material
Group；
S2. workpiece pre-processes
The workpiece of selection is put into cutting numerically-controlled machine tool, polishing processing is carried out to the surface of workpiece, grinding workpieces are cut
It is whittled into the workpiece of certain size volume, removes the original various spray coatings retained of workpiece surface, and the recess of workpiece surface is damaged
Injury and burr are uniformly removed, so that workpiece surface is uniform and smooth, to meet the spraying of subsequent inorganic coating；
S3. workpiece surface is except dirty
The workpiece that polishing has been cut is put into the service sink containing 50% mass fraction sodium hydroxide solution, impregnates one section
Time, the greasy dirt for workpiece surface adherency of going out under the immersion of sodium hydroxide solution, then workpiece taking-up is put into chemical de-rusting liquid
In, derusting operation is carried out to the surface of workpiece, takes out and dries after being soaked for a period of time, progress surface essence in sander is placed into and removes
The dirt of workpiece surface attachment is removed, removes the dirt of workpiece surface, reuse ejected wash water and spray to the surface of workpiece by rust
Leaching processing, it is dirty to remove surface；
S3. workpiece bulk processing
It will be put into sand-blasting machine except the workpiece after dirty, blasting treatment carried out to the surface of workpiece, is realized to workpiece surface
Roughening treatment, so that subsequent spraying is stronger, is increased between coating and workpiece with increasing the contact surface between coating and substrate
Bonding strength；
S4. transition zone is sprayed
The tie coat that viscosity is good between a kind of and workpiece and sprayed on material is selected, so that the subsequent bad spraying material being adhered
Expect that can be consolidated sprays in workpiece surface；
S5. workpiece is dried
The workpiece for having sprayed tie coat is put into drying box, is heated by drying box the moisture of workpiece surface is complete
Removal, and pre-heat effect is opened, avoid subsequent high temperature spraying from being easy so that workpiece generates the effect expanded with heat and contract with cold and is easy to workpiece
Damaging influences workpiece coating quality；
S6. thermal spraying treatment
Thermal spraying operation is carried out to workpiece surface using the method for high speed flame spraying, encapsulation process agent is uniformly coated
In workpiece surface, coating work is completed, then the workpiece after the completion of coating is subjected to heating, drying by air blast air-heater；
S7. coating post-processes
Coating sealing reagent is uniformly coated in workpiece surface, so that the inside that coating sealing reagent uniformly blocks coating is empty
In gap, then workpiece taking-up is put into drying box and carries out drying operation, workpiece to the end is obtained with this.
The time that workpiece impregnates in sodium hydroxide solution in S3 is 10-15min.
Thermal spraying operation in S6 is until the thickness of workpiece surface is greater than 3mm.
The temperature of thermal spraying treatment control heating spraying is in 1200 DEG C to 1350 DEG C in S6.
The operation of S7 repeats at least three times.
In conclusion this is used for the surface treatment method of thermal spraying inorganic coating, pre-processed by workpiece, by the work of selection
Part is put into cutting numerically-controlled machine tool, carries out polishing processing to the surface of workpiece, grinding workpieces are cut into certain size volume
Workpiece is removed the original various spray coatings retained of workpiece surface, and will uniformly be removed at the dented damage of workpiece surface with burr
Fall, enable to workpiece surface uniform and smooth, to meet the accurate requirement of the spraying of subsequent inorganic coating, so that subsequent inorganic painting
The spraying of layer is more uniform, and adhesiveness is more preferable comprehensively, by workpiece surface except dirty, will workpiece that polishing has been cut be put into containing
It in the service sink of 50% mass fraction sodium hydroxide solution, is soaked for a period of time, work of going out under the immersion of sodium hydroxide solution
The greasy dirt of part surface adhesion, then workpiece taking-up is put into chemical de-rusting liquid, derusting operation is carried out to the surface of workpiece, impregnates one
It takes out and dries after the section time, place into progress surface essence derusting in sander, the dirt of workpiece surface attachment is removed, work is removed
The dirt on part surface reuses ejected wash water and carries out spray process to the surface of workpiece, and removing surface is dirty, enables to workpiece
Surface is clean, avoids dirt from retaining so that inorganic coating, which can not be coated uniformly on workpiece surface, is easy to appear rough ask
Topic, is post-processed by coating, coating sealing reagent is uniformly coated in workpiece surface, so that coating sealing reagent uniformly blocks painting
In the internal voids of layer, then workpiece taking-up is put into drying box and carries out drying operation, so that the inorganic painting of workpiece surface coating
Layer has better sealing, makes it have better anticorrosive property.
It should be noted that the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of surface treatment method for thermal spraying inorganic coating, characterized by the following steps:
S1. workpiece prepares
Matched workpiece, which is applicable in, according to size, quality and choice of material distinguishes separated multiple groups by five one group of quantity；
S2. workpiece pre-processes
The workpiece of selection is put into cutting numerically-controlled machine tool, polishing processing is carried out to the surface of workpiece, grinding workpieces are cut into
The workpiece of certain size volume removes the original various spray coatings retained of workpiece surface, and will be at the dented damage of workpiece surface
It is uniformly removed with burr, so that workpiece surface is uniform and smooth, to meet the spraying of subsequent inorganic coating；
S3. workpiece surface is except dirty
The workpiece that polishing has been cut is put into the service sink containing 50% mass fraction sodium hydroxide solution, when impregnating one section
Between, the greasy dirt for workpiece surface adherency of going out under the immersion of sodium hydroxide solution, then workpiece taking-up is put into chemical de-rusting liquid,
Derusting operation is carried out to the surface of workpiece, takes out and dries after being soaked for a period of time, places into progress surface essence derusting in sander,
By the dirt removal of workpiece surface attachment, the dirt of workpiece surface is removed, ejected wash water is reused and the surface of workpiece is sprayed
It is dirty to remove surface for processing；
S3. workpiece bulk processing
It will be put into sand-blasting machine except the workpiece after dirty, blasting treatment carried out to the surface of workpiece, realizes the roughening to workpiece surface
Processing, so that subsequent spraying is stronger, increases the company between coating and workpiece to increase the contact surface between coating and substrate
Connect intensity；
S4. transition zone is sprayed
The tie coat that viscosity is good between a kind of and workpiece and sprayed on material is selected, enables the subsequent bad sprayed on material being adhered
Enough firm sprays in workpiece surface；
S5. workpiece is dried
The workpiece for having sprayed tie coat is put into drying box, is heated by drying box and goes the moisture of workpiece surface completely
It removes, and opens pre-heat effect, avoid subsequent high temperature spraying from being easy so that workpiece generates the effect expanded with heat and contract with cold and is easy to make workpiece
At destroying infection workpiece coating quality；
S6. thermal spraying treatment
Thermal spraying operation is carried out to workpiece surface using the method for high speed flame spraying, encapsulation process agent is uniformly coated in work
Coating work is completed, then the workpiece after the completion of coating is subjected to heating, drying by air blast air-heater in part surface；
S7. coating post-processes
Coating sealing reagent is uniformly coated in workpiece surface, so that coating sealing reagent uniformly blocks the internal voids of coating
In, then workpiece taking-up is put into drying box and carries out drying operation, workpiece to the end is obtained with this.
2. a kind of surface treatment method for thermal spraying inorganic coating according to claim 1, it is characterised in that: described
The time that workpiece impregnates in sodium hydroxide solution in S3 is 10-15min.
3. a kind of surface treatment method for thermal spraying inorganic coating according to claim 1, it is characterised in that: described
Thermal spraying operation in S6 is until the thickness of workpiece surface is greater than 3mm.
4. a kind of surface treatment method for thermal spraying inorganic coating according to claim 1, it is characterised in that: described
The temperature of thermal spraying treatment control heating spraying is in 1200 DEG C to 1350 DEG C in S6.
5. a kind of surface treatment method for thermal spraying inorganic coating according to claim 1, it is characterised in that: described
The operation of S7 repeats at least three times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910741146.4A CN110331359A (en) | 2019-08-12 | 2019-08-12 | A kind of surface treatment method for thermal spraying inorganic coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910741146.4A CN110331359A (en) | 2019-08-12 | 2019-08-12 | A kind of surface treatment method for thermal spraying inorganic coating |
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| CN110331359A true CN110331359A (en) | 2019-10-15 |
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| CN201910741146.4A Pending CN110331359A (en) | 2019-08-12 | 2019-08-12 | A kind of surface treatment method for thermal spraying inorganic coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713473A (en) * | 2022-02-28 | 2022-07-08 | 广东粤科新材料科技有限公司 | Method for sealing holes by thermal spraying coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02285061A (en) * | 1989-04-26 | 1990-11-22 | Nippon Alum Mfg Co Ltd | Surface treatment by gold color of aluminum product |
| CN106011723A (en) * | 2016-06-23 | 2016-10-12 | 安徽恒意硬面工程股份有限公司 | Early strengthening treatment technology for surface of hot-rolling forming roller |
| CN107254650A (en) * | 2017-07-04 | 2017-10-17 | 安徽威龙再制造科技股份有限公司 | A kind of fan blade surface repairing method |
-
2019
- 2019-08-12 CN CN201910741146.4A patent/CN110331359A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02285061A (en) * | 1989-04-26 | 1990-11-22 | Nippon Alum Mfg Co Ltd | Surface treatment by gold color of aluminum product |
| CN106011723A (en) * | 2016-06-23 | 2016-10-12 | 安徽恒意硬面工程股份有限公司 | Early strengthening treatment technology for surface of hot-rolling forming roller |
| CN107254650A (en) * | 2017-07-04 | 2017-10-17 | 安徽威龙再制造科技股份有限公司 | A kind of fan blade surface repairing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713473A (en) * | 2022-02-28 | 2022-07-08 | 广东粤科新材料科技有限公司 | Method for sealing holes by thermal spraying coating |
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Application publication date: 20191015 |