CN112553557A - Thermal spraying protection method for groove-shaped part with blade - Google Patents
Thermal spraying protection method for groove-shaped part with blade Download PDFInfo
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- CN112553557A CN112553557A CN202011249709.7A CN202011249709A CN112553557A CN 112553557 A CN112553557 A CN 112553557A CN 202011249709 A CN202011249709 A CN 202011249709A CN 112553557 A CN112553557 A CN 112553557A
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- Prior art keywords
- spraying
- protection
- blade
- adhesive tape
- blades
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- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- 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
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
-
- 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
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- 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
- C23C4/126—Detonation 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
- C23C4/12—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
Abstract
The invention belongs to the technical field of thermal spraying protection, and particularly relates to a thermal spraying protection method for a groove-shaped part with a blade; the invention adopts a single protection method to solve the problem that effective thermal spraying protection on the blade and the blade interval area is difficult to realize for the groove-shaped part with the blade, and realizes soft-hard composite thermal spraying protection by accurately controlling the soft protection area and the lap joint and fixation of the soft protection and the hard protection; the method is simple and convenient to implement, effectively solves the problem that the thermal spraying protection of the groove-shaped part with the blade is difficult, can effectively avoid blade damage and deformation or blade coating deposition and fumigation caused by improper protection, and realizes a good protection effect in the spraying process of the groove-shaped part with the blade.
Description
Technical Field
The invention belongs to the technical field of thermal spraying protection, and particularly relates to a thermal spraying protection method for a groove-shaped part with a blade.
Background
The thermal spraying technology is an important material surface modification technology, and is characterized in that a certain heat source is utilized to heat a material to a molten or semi-molten state, and then the material is atomized through high-speed airflow or flame flow and is sprayed to the surface of the material at an accelerated speed, so that special performances such as wear resistance, heat resistance, corrosion resistance, oxidation resistance and the like are given to a material matrix, the surface of a workpiece is effectively protected, and the service life of the workpiece is prolonged. Therefore, the thermal spraying technology is widely applied to various fields of aerospace, transportation, petrochemical industry, electrics and electronics and the like, and has wide development prospect.
The protection of the non-spraying area of the part before thermal spraying is also a very critical link in the thermal spraying process, and especially for parts with special structures or special shapes such as blades, the protection of the part before thermal spraying becomes very important. If the thermal spraying protection method is improper, the deposited coating on the non-spraying area of the part or the special structure/shape of the part is damaged or deformed, and the part can be even scrapped. And for parts with special structures/shapes such as blades, the cost is high, and the scrapping of the parts causes great economic loss.
The hot spraying protection method is generally divided into hard protection and soft protection, the hard protection method mainly adopts a conventional metal tool or fixture to protect a non-spraying area of a part, the hard protection has better rigidity, but the problems that the protection tool or fixture is easy to adhere to a coating, the part is easy to damage and the like exist; the soft protection method comprises adhesive tape protection, daub protection, protective paint coating protection and the like, the problems that the adhesive tape protection is not firm in adhesion and easy to damage in the spraying process and the like easily occur, and the daub protection and the protective paint coating protection are difficult to thoroughly clean after spraying easily occur.
Aiming at a groove-shaped part with two circles of blades and provided with blades, a coating is prepared by thermal spraying at the bottom of a groove-shaped area between the two circles of blades, and the thermal spraying protection difficulty for the blades and the blade interval area is higher. In order to prevent the blade and the blade interval area from depositing coatings in the thermal spraying process, the circumferential area of the blade tip of two circles of blades and the end surface area of the two circles of blades close to the spraying area need to be protected before thermal spraying. If the hard protection method is adopted, because no hard protection tool fixing point or supporting point is available on the part, the hard protection tool can be fixed only through the acting force and the reacting force between the hard protection tool and the part, so that two potential risks are brought: 1. the part is easy to damage, especially for the blade structure, the thickness of the blade is thin and the requirement on the blade profile is strict, and if the blade is damaged or the blade profile is changed due to improper acting force, the normal use of the part is influenced; 2. even if adopt effort and reaction force to fix hard protection frock, because thermal input can take place expend with heat and contract with cold at hot spraying in-process to lead to the removal of hard protection frock, cause the sheltering from in part spraying region, finally influence the coating quality. If a soft protection method is adopted, firstly, both the daub protection and the protective paint coating protection have the problems of complexity in implementation and difficulty in cleaning after spraying, and the adoption of the adhesive tape protection has a large risk of depositing coatings on the blades and the blade interval areas. Because the blade tip circumference area or the blade end face area close to the spraying area all have the discontinuous area of hollow out construction, the supporting force of this kind of structure to the sticky tape is not enough, because sticky tape itself is softer, under the impact of hot spraying high temperature and air current, the sticky tape takes place to peel off easily or damaged, leads to blade and blade interval region deposit upper coat, influences the normal use of part.
Disclosure of Invention
The invention aims to provide a thermal spraying protection method for a groove-shaped part with a blade, which can effectively avoid blade damage and deformation or blade coating deposition and fumigation caused by improper protection, thereby effectively realizing thermal spraying protection for the blade and a blade interval area of the part.
The technical scheme of the invention is as follows: a thermal spraying protection method for a groove-shaped part with a blade is characterized by comprising the following steps: the method is characterized in that the soft-hard composite protection mode is adopted for carrying out thermal spraying protection on the part blades and the blade interval areas, and the specific method comprises the following steps:
1) protecting the spraying transition areas T at two sides of the to-be-sprayed area P by using a spraying-resistant protective adhesive tape, wherein the protection thickness is d1, and a spraying transition surface with the width delta is reserved close to the spraying area during protection;
2) completely covering the blades B on two sides of the region to be sprayed P along the circumference by using a spraying-resistant protective adhesive tape;
3) respectively arranging 2 metal protection tools G at one side of a region P to be sprayed of blades B at two sides, aligning and closely approaching, aligning the edge of the end face of each protection tool G with the edge of a spraying-resistant protection adhesive tape at a spraying transition region T, and enabling the diameter D of the inner circle of each metal protection tool G to be D0+2D1, wherein D0 is the diameter of the T part of the spraying transition region;
4) and connecting and fixing the metal protection tool G and the spraying-resistant protective adhesive tapes on the circumferences of the blades B on the two sides by adopting the spraying-resistant protective adhesive tapes.
The metal protection tool G is two symmetrical parts, is of a disc structure after being combined, and an inner circle with the diameter D is arranged on the bottom surface.
And between the step 3) and the step 4), a spraying-resistant protective adhesive tape is adopted to bond and combine the metal protection tool G into a disc structure.
The protective thickness d1 of the spray-resistant protective adhesive tape is 0.3 mm-0.9 mm.
The width delta of the spraying transition surface T1 is 0.5 mm-1.0 mm.
The spraying-resistant protective adhesive tape is a viscous glass fiber high-temperature-resistant adhesive tape.
The metal protection tool G is made of carbon steel or stainless steel.
The thermal spraying process is one of explosion spraying, flame spraying, plasma spraying and electric arc spraying.
The invention skillfully solves the problems that the blade spacing structure has poor bearing performance on soft protection materials and is difficult to fix by adopting a hard protection tool aiming at parts with special structures and shapes at the bottom of the groove-shaped area between two circles of blades in the spraying area. Specifically, compared with the common thermal spraying protection method, the method has the following beneficial effects:
the soft protection adhesive tape is embedded in the contact part of the hard protection tool and the groove-shaped part with the blade by utilizing the stress relaxation characteristic of the soft protection adhesive tape, and compared with a single hard protection method, the method effectively avoids part surface damage or blade deformation caused in the installation and thermal spraying processes of the hard protection tool.
And secondly, through the accurate control of the bonding thickness of the soft protection adhesive tape and the size of the hard protection tool, the good isolation of a part spraying area from the blades and the blade spacing area is realized, the protection of the blades and the blade spacing area in the thermal spraying process is ensured, and compared with a simple soft protection or hard protection method, the abnormal fumigation deposition of the coating of the blades and the blade spacing area caused by untight sealing in the thermal spraying process is effectively avoided.
Thirdly, the temperature resistance and the adhesion fixing characteristic of the soft protection adhesive tape are ingeniously utilized, good bonding combination of the hard protection tool and bonding fixing of the hard protection tool and the part are achieved, an additional complex auxiliary fixing device of the hard protection tool is not needed, the bonding fixing effect is good, and shielding of a spraying area caused by poor displacement generated by fixing of the hard protection tool in the thermal spraying process is effectively avoided, so that the coating quality is influenced.
The implementation of the invention is convenient and simple, and the comparison with the single soft protection or hard protection method proves that the soft-hard composite thermal spraying protection effect adopted by the invention is obvious, the protection of the blade and the blade interval area after the actual part is sprayed is good, and the coating quality is excellent.
Drawings
Figure 1 is a schematic view of a bladed channel shaped part.
Fig. 2 is a schematic diagram of the protection of the transition zone part of the grooved part with the blade.
Fig. 3 is a schematic view of a metal protection tool for a grooved part with blades.
Fig. 4 is a schematic view of the integral protection of the grooved part with the blade.
Description of reference numerals: p-the surface to be sprayed; b, leaf blades; a-blade interval region; t-spraying a transition zone; j-spray resistant protective tape; g, metal protection tooling; delta-spraying the transition surface to reserve width; d 1-thickness of the spray-resistant protective tape in the spray-coated transition zone; d0-diameter of T part of spraying transition zone; d-the diameter of the inner circle of the metal protection tool G.
Detailed Description
The invention is further described below with reference to the figures and examples.
The two rings of blades B of the groove-shaped part with the blades and the blade spacing area A are subjected to thermal spraying protection in a soft-hard composite protection mode (see figure 1), so that the preparation of the thermal spraying coating of the area to be sprayed P is realized, and the specific implementation process is as follows:
1) pasting a spraying-resistant protective adhesive tape with the thickness of 0.3-0.9 mm on the spraying transition areas T at the two sides of the area P to be sprayed for protection, and reserving a spraying transition surface with the thickness of 0.5-1.0 mm close to the spraying area during protection;
2) completely covering the blades B on two sides of the region to be sprayed P along the circumference by using a spraying-resistant protective adhesive tape;
3) respectively arranging 2 metal protection tools G at one side of a region P to be sprayed of blades B at two sides, aligning and closely approaching, aligning the edge of the end face of each protection tool G with the edge of a spraying-resistant protection adhesive tape at a spraying transition region T, and enabling the diameter D of the inner circle of each metal protection tool G to be D0+2D1, wherein D0 is the diameter of the T part of the spraying transition region;
4) bonding and combining the metal protection tool G into a disc structure by using a spraying-resistant protection adhesive tape, and connecting and fixing the metal protection tool G and the spraying-resistant protection adhesive tapes on the circumferences of the blades B on the two sides by using the spraying-resistant protection adhesive tape;
5) and selecting a proper thermal spraying material and a thermal spraying process to carry out coating spraying preparation on the region P to be sprayed of the grooved part with the blade.
Example 1:
the surface of the grooved part P with blades shown in fig. 1 was thermally sprayed with a nickel-aluminium coating, the diameter D0 of the sprayed transition zone T being 181 mm. Spraying transition areas T on two sides of the area P to be sprayed are pasted with spraying-resistant protective adhesive tapes with the thickness of 0.5mm for protection, and spraying transition surfaces with the thickness of 0.5mm are reserved close to the spraying areas during protection (see figure 2); completely covering the blades B on two sides of the region to be sprayed P along the circumference by using a spraying-resistant protective adhesive tape; respectively arranging 2 metal protection tools G at one side of a region P to be sprayed of blades B at two sides, aligning and closely approaching, aligning the edge of the end face of each protection tool G with the edge of a spraying-resistant protection adhesive tape at a spraying transition region T, and adjusting the diameter D of the inner circle of each metal protection tool G to be 181mm +2 multiplied by 0.3mm to be 181.6mm (see figure 3); bonding and combining the metal protection tool G into a disc structure by using a spraying-resistant protection adhesive tape, and connecting and fixing the metal protection tool G and the spraying-resistant protection adhesive tapes on the circumferences of the blades B at two sides by using the spraying-resistant protection adhesive tape, so that soft-hard composite protection of the groove-shaped part with the blades is realized (see figure 4); and spraying the grooved part with the blade by adopting Ni-5% Al thermal spraying powder and an explosion spraying process to obtain a nickel-aluminum coating on the surface of the region P to be sprayed.
Example 2:
the surface of the grooved part P with blades shown in fig. 1 was thermally sprayed with a nickel/graphite coating, the diameter D0 of the sprayed transition zone T being 181 mm. Spraying transition areas T on two sides of the area P to be sprayed are pasted with spraying-resistant protective adhesive tapes with the thickness of 0.9mm for protection, and spraying transition surfaces with the thickness of 0.8mm are reserved close to the spraying areas during protection (see figure 2); completely covering the blades B on two sides of the region to be sprayed P along the circumference by using a spraying-resistant protective adhesive tape; respectively arranging 2 metal protection tools G at one side of a region P to be sprayed of blades B at two sides, aligning and closely approaching, aligning the edge of the end face of each protection tool G with the edge of a spraying-resistant protection adhesive tape at a spraying transition region T, and adjusting the diameter D of the inner circle of each metal protection tool G to be 181mm +2 multiplied by 0.9mm to 182.8mm (see figure 3); bonding and combining the metal protection tool G into a disc structure by using a spraying-resistant protection adhesive tape, and connecting and fixing the metal protection tool G and the spraying-resistant protection adhesive tapes on the circumferences of the blades B at two sides by using the spraying-resistant protection adhesive tape, so that soft-hard composite protection of the groove-shaped part with the blades is realized (see figure 4); and spraying the grooved part with the blade by adopting Ni-25% graphite thermal spraying powder and a flame spraying process to obtain a nickel/graphite coating on the surface of the region P to be sprayed.
Claims (8)
1. A thermal spraying protection method for a groove-shaped part with a blade is characterized by comprising the following steps: the method is characterized in that the soft-hard composite protection mode is adopted for carrying out thermal spraying protection on the part blades and the blade interval areas, and the specific method comprises the following steps:
1) protecting the spraying transition areas T at two sides of the to-be-sprayed area P by using a spraying-resistant protective adhesive tape, wherein the protection thickness is d1, and a spraying transition surface with the width delta is reserved close to the spraying area during protection;
2) completely covering the blades B on two sides of the region to be sprayed P along the circumference by using a spraying-resistant protective adhesive tape;
3) respectively arranging 2 metal protection tools G at one side of a region P to be sprayed of blades B at two sides, aligning and closely approaching, aligning the edge of the end face of each protection tool G with the edge of a spraying-resistant protection adhesive tape at a spraying transition region T, and enabling the diameter D of the inner circle of each metal protection tool G to be D0+2D1, wherein D0 is the diameter of the T part of the spraying transition region;
4) and connecting and fixing the metal protection tool G and the spraying-resistant protective adhesive tapes on the circumferences of the blades B on the two sides by adopting the spraying-resistant protective adhesive tapes.
2. The thermal spray protection method for the grooved part with the blade as claimed in claim 1, characterized in that: the metal protection tool G is two symmetrical parts, is of a disc structure after being combined, and an inner circle with the diameter D is arranged on the bottom surface.
3. The thermal spray protection method for the grooved part with the blade as claimed in claim 1, characterized in that: and between the step 3) and the step 4), a spraying-resistant protective adhesive tape is adopted to bond and combine the metal protection tool G into a disc structure.
4. The thermal spray protection method for the grooved part with the blade as claimed in claim 1, characterized in that: the protective thickness d1 of the spray-resistant protective adhesive tape is 0.3 mm-0.9 mm.
5. The thermal spray protection method for the grooved part with the blade as claimed in claim 1, characterized in that: the width delta of the spraying transition surface T1 is 0.5 mm-1.0 mm.
6. The thermal spray protection method for the grooved part with the blade as claimed in claim 1, characterized in that: the spraying-resistant protective adhesive tape is a viscous glass fiber high-temperature-resistant adhesive tape.
7. The thermal spray protection method for the grooved part with the blade as claimed in claim 1, characterized in that: the metal protection tool G is made of carbon steel or stainless steel.
8. The method for explosion-spraying the coating on the surface of the variable-diameter part as claimed in claim 1, wherein: the thermal spraying process is one of explosion spraying, flame spraying, plasma spraying and electric arc spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249709.7A CN112553557A (en) | 2020-11-10 | 2020-11-10 | Thermal spraying protection method for groove-shaped part with blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249709.7A CN112553557A (en) | 2020-11-10 | 2020-11-10 | Thermal spraying protection method for groove-shaped part with blade |
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| Publication Number | Publication Date |
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| CN112553557A true CN112553557A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011249709.7A Pending CN112553557A (en) | 2020-11-10 | 2020-11-10 | Thermal spraying protection method for groove-shaped part with blade |
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| US20200166015A1 (en) * | 2017-07-07 | 2020-05-28 | Vestas Wind Systems A/S | A method of coating a rotor blade for a wind turbine |
| CN111647837A (en) * | 2020-07-20 | 2020-09-11 | 矿冶科技集团有限公司 | Shielding method for preparing hot spraying thick coating |
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2020
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| US20030054104A1 (en) * | 2001-09-18 | 2003-03-20 | Brown Peter Martin | Method and assembly for masking |
| US6592948B1 (en) * | 2002-01-11 | 2003-07-15 | General Electric Company | Method for masking selected regions of a substrate |
| US20090252872A1 (en) * | 2006-03-13 | 2009-10-08 | General Electric Company | Method and device to prevent coating a dovetail of a turbine airfoil |
| US20100173092A1 (en) * | 2007-06-05 | 2010-07-08 | Mtu Aero Engines, Gmbh | Adhesive masking tapes and method for coating and/or repairing components |
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| US20200166015A1 (en) * | 2017-07-07 | 2020-05-28 | Vestas Wind Systems A/S | A method of coating a rotor blade for a wind turbine |
| CN107626494A (en) * | 2017-10-31 | 2018-01-26 | 中国航发成都发动机有限公司 | A kind of blade tenon spraying positioning protecting tool set-up |
| CN108193163A (en) * | 2017-12-28 | 2018-06-22 | 中国航发四川燃气涡轮研究院 | A kind of high-temperature fusion thermocouple sensor manufacturing method based on flame spray powder coating |
| CN109097718A (en) * | 2018-09-10 | 2018-12-28 | 西安成立航空制造有限公司 | A kind of guard method in pair of thermal boundary spraying non-spraying face |
| CN111647837A (en) * | 2020-07-20 | 2020-09-11 | 矿冶科技集团有限公司 | Shielding method for preparing hot spraying thick coating |
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