Process equipment for coating engine thin-wall part coating

Abstract

The invention relates to the technical field of thermal spraying coating preparation and control, in particular to technological equipment and method for coating a coating of an engine thin-wall workpiece. The technological equipment comprises an annular chassis, a center ring belt used for being matched with a base for use is arranged in the center of the chassis, and eight first special-shaped bodies or eight second special-shaped bodies are arranged on the chassis; the first special-shaped body and the second special-shaped body are both arc-shaped, the bending directions of the first special-shaped body and the second special-shaped body are opposite, the first special-shaped body is attached to the non-spraying surface of the thin-wall part, and the first special-shaped body is detachably connected with the thin-wall part; the second special-shaped body is attached to the non-spraying surface of the thin-wall part, and the second special-shaped body is detachably connected with the thin-wall part. The first special-shaped body and the second special-shaped body which are designed forwards and backwards are used for tightly pressing the thin-wall part for the aerospace engine; therefore, the indirect wall thickness increasing effect of the thin-wall part is achieved, the machining technical problem of the thin-wall part in the thermal barrier coating coating process is effectively solved, and qualified delivery of the thin-wall part and high-quality and high-reliability service of aerospace planes can be achieved.

Description

Technical Field

[0001] This invention relates to the field of thermal spray coating preparation and control technology, specifically to a process equipment for coating thin-walled engine parts. Background Technology

[0002] A certain aerospace engine has a set of sealed heat shield components at its tail. To improve the high-temperature resistance of this thin-walled component, a thermal barrier coating with insulating properties needs to be applied to its surface. Currently, thermal spraying is the preferred method for preparing the coating for this thin-walled component. This thin-walled component is an irregularly shaped structural part (see reference). Figure 1 The structure is approximately rectangular, measuring 259 mm in length and 111 mm in width. The front section is triangular, with rounded tips and a gradually rising triangular surface, extending 47.4 mm from the plane of the thin-walled component. The rear end curves downwards, extending 7.6 mm from the plane of the thin-walled component. A reinforcing rib is formed at the center of the sealing sheet heat shield using a stamping technique, while four smaller symmetrical reinforcing ribs are formed on the left and right sides (see...). Figure 1 The wall thickness of this thin-walled component is only 0.8 mm, which is a typical thin-walled structural component.

[0003] Traditional thermal spraying processes involve roughening the surface of the thermal barrier coating, pre-treating the surface with alumina brown corundum sand, applying a base layer of MCrAlY using supersonic spraying, and then applying a top layer of nano-zirconia powder using atmospheric plasma coating to form a thermally insulating structural coating. However, this thin-walled part is a typical thin-walled structural component. After sandblasting pre-treatment and coating, the thin-walled part undergoes severe deformation in the opposite direction to the sprayed surface, making it impossible to prepare a coating on the thin-walled part. The resulting deformed coating cannot be properly assembled and implemented. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a process equipment for coating thin-walled parts of engines.

[0005] This invention is achieved through the following technical solution: A process equipment for coating thin-walled engine components includes an annular chassis with a central ring belt for use with a base. Eight first irregular shapes or eight second irregular shapes are arranged on the chassis. Both the first and second irregular shapes are arc-shaped, with opposite bending directions. The first irregular shapes are in contact with the non-coated surface of the thin-walled component and are detachably connected to it. The second irregular shapes are also in contact with the non-coated surface of the thin-walled component and are detachably connected to it.

[0006] Preferably, both the first and second irregular shapes can be detachably connected to the chassis.

[0007] Preferably, the first and second irregular shapes are provided with mounting plates on the side near the chassis, and the mounting plates and the chassis are connected by screws.

[0008] Preferably, the mounting plate is provided with a first positioning hole, and the chassis is provided with a second positioning hole. The first positioning hole and the second positioning hole are coaxial and connected by a positioning pin.

[0009] Preferably, there are two of each of the first and second positioning holes, and they correspond one-to-one.

[0010] Preferably, the threaded hole for connecting the mounting plate is located between the two positioning holes.

[0011] Preferably, the side of the first irregular shape in the bending direction is the front side, the plate shape of the first irregular shape is completely in contact with the non-coated surface of the thin-walled part, the bottom of the first irregular shape is connected to the mounting plate, and a raised boss is provided at the connection between the bottom and the mounting plate, the boss is located on the back side of the first arc plate.

[0012] Preferably, the side of the second irregular shape in the bending direction is the front side, the plate shape of the second irregular shape is completely in contact with the sprayed surface of the thin-walled part, the bottom of the second irregular shape is connected to the mounting plate, and a downward inclined platform is provided at the connection between the bottom and the mounting plate. The higher end of the inclined platform is connected to the tail, and the lower end is connected to the mounting plate. The inclined platform is located on the front side of the second irregular shape.

[0013] Preferably, the first and second irregular shapes are provided with multiple through holes for connection with thin-walled parts.

[0014] A process for coating thin-walled engine components, employing equipment for coating thin-walled engine components, includes: S1, Install the second irregular body on the chassis; S2, attach the sprayed surface of the thin-walled part to the second irregular body, and connect the thin-walled part and the second irregular body; S3, Sandblasting pretreatment is performed on the non-coated surface of thin-walled parts; S4, the first alien body is installed on another chassis; S5, attach the uncoated surface of the thin-walled part to the first irregular shape, and connect the thin-walled part and the first irregular shape; S6, pre-treat the sprayed surface of thin-walled parts by sandblasting; S7, with eight first alien bodies mounted on another chassis; S8, attach the uncoated surface of the thin-walled part to the first irregular shape, and connect the thin-walled part and the first irregular shape; S9 is used to apply a coating to the sprayed surface of thin-walled parts.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a process equipment for coating thin-walled engine components. By designing detachable first and second irregular shapes to shield and adhere the painted and unpainted surfaces of the thin-walled component, the equipment can tightly press the thin-walled component for aerospace engines onto the fixture, achieving an indirect "thickness enhancement" effect. Furthermore, the two irregular shapes employ a front-and-back design, ensuring uniform stress on both sides of the thin-walled component. This effectively solves the processing technical challenges of coating thin-walled components with thermal barrier coatings, enabling qualified delivery of thin-walled components and high-quality, high-reliability service for aerospace aircraft. Simultaneously, this process equipment is simple to use, requiring only the tooling block to be flipped to press the thin-walled component tightly onto the irregular shape. This allows for control of the coating process, preventing thermal barrier coating peeling, flaking, flaking, and cracking during post-processing.

[0016] This method can also be further applied to the development and implementation of coating processes for key thin-walled components and materials in key national industries such as aviation, aerospace, electronics, shipbuilding, and high-speed rail. It has strong versatility, high reference value, and wide applicability. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an irregularly shaped structural component. Figure 2 This is a schematic diagram of a process equipment for coating thin-walled engine parts according to the present invention; Figure 3 This is a schematic diagram of the structure of the first irregular body in this invention; Figure 4 This is a schematic diagram of the structure of the second irregular body in this invention; Figure 5 This is a schematic diagram of the assembly of the irregular body and the chassis in this invention.

[0018] In the diagram, 1 is the chassis; 2 is the first irregular shape; 3 is the second irregular shape; 4 is the screw; 5 is the locating pin; 6 is the handle; 7 is the bolt; 8 is the second locating hole; 9 is the threaded hole; 10 is the boss; 11 is the ramp; and 12 is the mounting plate. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0020] This invention discloses a process equipment for coating thin-walled engine parts, referring to... Figure 2 , 34. The system includes a ring-shaped chassis 1 with a central ring band for use with a base. The chassis 1 has eight detachable first irregularly shaped bodies 2 or eight second irregularly shaped bodies 3. A mounting plate 12, L-shaped, is positioned on the side of each of the first irregularly shaped bodies 2 and 3 closest to the chassis 1. The base plate of the mounting plate 12 is connected to the chassis 1 by bolts 7. The mounting plate 12 has first positioning holes, and the chassis 1 has second positioning holes 8. The first and second positioning holes 8 are coaxial and connected by positioning pins 5. There are two of each type of positioning hole, and they correspond one-to-one. Threaded holes 9 connecting the mounting plate 12 are located between the two first positioning holes or the two second positioning holes 8, and the bolts 7 are connected to the threaded holes 9.

[0021] Both the first irregular body 2 and the second irregular body 3 are arc-shaped, and the bending directions of the first irregular body 2 and the second irregular body 3 are opposite. Specifically, taking the side with the bending direction of the first irregular body 2 as the front, the plate shape of the first irregular body 2 is completely in contact with the non-coated surface of the thin-walled part. The bottom of the first irregular body 2 is connected to the vertical plate of the mounting plate 12, and a raised boss 10 is provided at the connection between the bottom and the mounting plate 12. The boss 10 is located on the back of the first arc-shaped plate.

[0022] With the side of the second irregular body 3 in the bending direction as the front, the plate shape of the second irregular body 3 is completely in contact with the sprayed surface of the thin-walled part. The bottom of the second irregular body 3 is connected to the vertical plate of the mounting plate 12, and a downward inclined platform 11 is provided at the connection between the bottom and the mounting plate 12. The higher end of the inclined platform 11 is connected to the tail, and the lower end is connected to the mounting plate 12. The inclined platform 11 is located on the front of the second irregular body 3.

[0023] The first irregularly shaped body 2 is attached to the uncoated surface of the thin-walled component, and the first irregularly shaped body 2 and the thin-walled component are detachably connected. The second irregularly shaped body 3 is also attached to the uncoated surface of the thin-walled component, and the second irregularly shaped body 3 is detachably connected to the thin-walled component. Multiple through holes are provided on the first irregularly shaped body 2 and the second irregularly shaped body 3 for connection with the thin-walled component. When the thin-walled component is attached to either the first irregularly shaped body 2 or the second irregularly shaped body 3, screws 4 are used to connect the two through the through holes. Specifically, three sets of threaded holes 9 are symmetrically distributed along the center line of each irregularly shaped body, with one threaded hole 9 located along the center line.

[0024] Handles 6 are provided on the outer side of the chassis 1 to facilitate personnel handling and organization.

[0025] After completing the design and manufacturing of chassis 1, first irregular body 2, second irregular body 3 and other components, the assembly tooling for thin-walled components is installed.

[0026] Place the annular structural base 11 in the fixed position of the general-purpose spraying base. Locate eight positions on the base 11 for fixing the first irregular body 2 and three holes (two positioning holes and threaded holes 9). The middle hole of the three parallel holes at the eight positions is a threaded clamping hole, and the holes on both sides of the two end positions are positioning holes. Insert the positioning pin 5 into the first positioning hole, and then insert the positioning pin 5 into the second positioning hole to form two positioning planes with positioning functions. Then insert the first irregular body 2 or the second irregular body 3 into the positioning pin 5 to achieve positioning of the first irregular body 2 or the second irregular body 3. Then screw the slotted cylindrical head screw 4 into the middle threaded hole 9 of the base 11 through the middle threaded hole 9 of the first irregular body 2 or the second irregular body 3, and use preload to tighten the screw 4 to achieve positioning and clamping of the first irregular body 2 or the second irregular body 3. By sequentially installing the 2nd to 8th first irregular body 2 or second irregular body 3 on the chassis 1, the combined design and assembly of the coating tooling for thin-walled parts is realized.

[0027] This invention also discloses a process method for coating thin-walled engine parts, employing equipment for coating thin-walled engine parts, including: S1. Install the second irregular body 3 on the chassis 1. Specifically, place the annular structural chassis 11 in the fixed position of the general-purpose spraying base. Locate eight holes on the chassis 1 to fix the second irregular body 3. The middle hole of the three parallel holes at the eight locations is a threaded clamping hole, and the two holes at both ends are positioning holes. Insert the positioning pin into the first positioning hole, and then insert the positioning pin 5 into the second positioning hole to form two positioning planes with positioning functions. Then, insert the second irregular body 3 into the positioning pin 5 to achieve positioning of the second irregular body 3. Then, screw the slotted cylindrical head screw 4 into the middle threaded hole 9 of the chassis 11 through the middle hole of the second irregular body 3, and use preload to tighten the screw 4 to achieve positioning and clamping of the first second irregular body 3. In the same way, install the second to eighth second irregular bodies 3 on the chassis 1, realizing the combined design and assembly of the coating tooling for thin-walled parts.

[0028] S2, the sprayed surface of the thin-walled part is attached to the second irregular body 3, and the thin-walled part and the second irregular body 3 are connected.

[0029] After the tooling for the non-coated surface of the thin-walled component is installed, the coated surface of the sealing sheet heat insulation screen is tightly fitted to the second irregular body 3. The seven through holes in the thin-walled component are aligned with the seven holes in the second irregular body 3. Screws 4, washers, and nuts are used to press the thin-walled component firmly, ensuring complete and tight contact and compression between the thin-walled component and the second irregular body 3. This achieves the sandblasting pretreatment of the non-coated surface. S3 involves sandblasting pretreatment of the non-coated surfaces of thin-walled parts. Specifically: 1) The design of pretreatment parameters for non-sprayed surfaces using sandblasting includes: Sandblasting pretreatment machine type: pressure type Anvil diameter: (Φ8±2) mm Sand size: 60# Sand composition: brown aluminum oxide Sandblasting pretreatment angle: 45°≤Φ≤85° Sandblasting pretreatment air pressure: (0.25~0.35) MPa Sandblasting pretreatment distance: (200~350) mm 2) Design of pretreatment procedure for non-sprayed surfaces by sandblasting The sandblasting pretreatment machine uses an ABB robot and a 7-axis linkage control system to perform sandblasting pretreatment on thin-walled parts.

[0030] MoveJ P10,v100,fine,tool0; MoveL P20,v100\V:=3.0,fine, tool0; MoveL P30,v100\V:=3.0,fine, tool0; MoveL P40,v100,fine,tool0; MoveL P50,v100\V:=3.0,fine, tool0; MoveL P40,v100\V:=3.0,fine, tool0; MoveL P30,v100,fine,tool0; MoveL P20,v100\V:=3.0,fine,tool0; MoveL P10,v100\V:=3.0,fine, tool0.

[0031] S4. Install the first irregular body 2 on another chassis 1. Specifically, place chassis 1 in the fixed position of the general-purpose spraying base. Locate eight holes on chassis 1 to fix the first irregular body 2. The middle hole of the three parallel holes at the eight locations is a threaded clamping hole, and the two holes at both ends are positioning holes. Insert the positioning pin into the first positioning hole, and then insert the positioning pin 5 into the second positioning hole to form two positioning planes with positioning functions. Then insert the first irregular body 2 into the positioning pin 5 to achieve positioning of the first irregular body 2. Then screw the slotted cylindrical head screw 4 into the middle threaded hole 9 of chassis 1 through the middle hole of the first irregular body 2, and use preload to tighten the screw 4 to achieve positioning and clamping of the first irregular body 2. In the same way, install the second to eighth first irregular bodies 2 on chassis 11, realizing the combined design and assembly of the coating tooling for thin-walled parts.

[0032] S5, attach the uncoated surface of the thin-walled part to the first irregular body 2, and connect the thin-walled part and the first irregular body 2; Specifically, after the tooling used for spraying the thin-walled part is installed, the non-sprayed surface of the sealing sheet heat insulation screen is tightly fitted to the first irregular body 2. The positions of the 7 through holes in the thin-walled part correspond to the 7 holes in the first irregular body 2. Screws 4, washers and nuts are used to press the thin-walled part tightly to ensure that the thin-walled part is completely in close contact with and pressed into the first irregular body 2, thereby achieving the sandblasting pretreatment of the sprayed surface.

[0033] S6, pre-treatment of the sprayed surface of thin-walled parts by sandblasting, specifically: 1) Design of pretreatment parameters for sandblasting of sprayed surfaces Sandblasting pretreatment machine type: pressure type Anvil diameter: (Φ8±2) mm Sand size: 60# Sand composition: brown aluminum oxide Sandblasting pretreatment angle: 45°≤φ≤85° Sandblasting pretreatment air pressure: (0.15~0.25) MPa Sandblasting pretreatment distance: (200~350) mm 2) Design of pretreatment procedure for sandblasting of sprayed surfaces The sandblasting pretreatment machine uses an ABB robot and a 7-axis linkage control system to perform sandblasting pretreatment on thin-walled parts.

[0034] MoveJ P10,v100,fine,tool0; MoveL P20,v100\V:=2.8,fine, tool0; MoveL P30,v100\V:=2.8,fine, tool0; MoveL P40,v100,fine,tool0; MoveL P50,v100\V:=2.8,fine, tool0; MoveL P40,v100\V:=2.8,fine, tool0; MoveL P30,v100,fine,tool0; MoveL P20,v100\V:=2.8,fine,tool0; MoveL P10,v100\V:=2.8,fine, tool0; The sandblasting pretreatment design for the non-sprayed surface of thin-walled parts is achieved by using the first irregular shape 2.

[0035] S7. Install eight first irregular shapes 2 on another chassis 1. Specifically, place the annular structural chassis 1 in the fixed position of the general-purpose spraying base. Locate eight holes on the chassis 1 to fix the first irregular shapes 2. The middle hole of the three parallel holes at the eight locations is a threaded clamping hole, and the holes on both sides are positioning holes. Insert the positioning pin into the first positioning hole, and then insert the positioning pin 5 into the second positioning hole to form two positioning planes with positioning functions. Then insert the first irregular shape 2 into the positioning pin 5 to achieve positioning of the first irregular shape 2. Then screw the slotted cylindrical head screw 4 into the middle threaded hole 9 of the chassis 1 through the middle hole of the first irregular shape 2, and use preload to tighten the screw 4 to achieve positioning and clamping of the first first irregular shape 2. Similarly, install the second to eighth first irregular shapes 2 on the chassis 1, realizing the combined design and assembly of the coating tooling for thin-walled parts.

[0036] S8, the non-coated surface of the thin-walled component is attached to the first irregular body 2, and the thin-walled component and the first irregular body 2 are connected; specifically, after the tooling used for the coating surface of the thin-walled component is installed, the non-coated surface of the sealing sheet heat insulation screen is tightly attached to the first irregular body 2, and the positions of the 7 through holes on the thin-walled component correspond to the 7 holes of the first irregular body 2. The thin-walled component is pressed with screws 4, washers and nuts to ensure that the thin-walled component is completely in close contact with and pressed into the first irregular body 2. The 8 sealing sheet heat insulation screens are installed on the 8 first irregular bodies in a similar way to achieve the coating of the coating surface.

[0037] S9 applies a coating to the sprayed surface of thin-walled parts, specifically: 1) Design of coating parameters for supersonic flame coating on sprayed surface Equipment type: JP-8000 Spray gun model: 5220 Powder feeder model: 1264 Nozzle type: 6 inches Kerosene pressure: (100±10) PSI Kerosene flow rate: (5.5±1) GPH Oxygen pressure: (125±15) PSI Oxygen flow rate: (1900±50) SCFH Carrier gas nitrogen pressure: (85±5) PSI Carrier nitrogen flow rate: (25±5)SCFH Powder feeder speed: (3.5±0.5) RPM Powder delivery rate: (25~35) g / min Spraying distance: (300~400) mm 2) Design of atmospheric plasma coating parameters for sprayed surfaces Equipment Model: MultiCoat Spray gun model: F4 Powder feeder model: TWIN10-2 Nozzle type: Φ6.0mm Powder feed nozzle diameter: Φ1.8mm Powder feed nozzle distance: 6mm Powder dispenser: L-shaped Powder delivery angle: 90° Main gas pressure: (3-5) bar Main gas flow rate: (42±2) NIPM Secondary gas pressure: (3-5) bar Secondary gas flow rate: (11±2) NIPM Carrier gas pressure: (3-5) bar Carrier gas flow rate: (3.5±1) NIPM Current: (580±10) A Voltage: (74±5)V Powder feeder speed: (35±10)% Powder delivery rate: (28~33) g / min Spraying distance: (110~120) mm 3) Spray coating application process design The coating equipment uses ABB's IRB2600 robotic arm and a 7-axis flexible linkage control system for the turntable to apply coatings to thin-walled parts.

[0038] MoveJ P10,v100,fine,plasma135; MoveL P20,v100\V:=1.5,fine,plasma135; MoveL P30,v100\V:=1.5,fine,plasma135; MoveL P40,v100,fine,plasma135; MoveL P50,v100\V:=1.5,fine,plasma135; MoveL P40,v100\V:=1.5,fine,plasma135; MoveL P30,v100,fine,plasma135; MoveL P20,v100\V:=1.5,fine,plasma135; MoveL P10,v100\V:=1.5,fine,plasma135; illustrate: 1) The dot position can be a decimal number or an asterisk (*); 2) The decimal digits at the point position are allowed to not start from P10 and are not allowed to be consecutive; 3) Set the maximum speed of the first point position in the motion program to v100; 4) Before each work shift, a simulation of the procedure must be conducted, and the actual spraying of thin-walled parts can only proceed after verification and confirmation. 5) Allows fine-tuning of point positions in edited programs; 6) After the first piece is painted, it is permissible to add a note for P10 and change the speed of the first P20 to V100.

[0039] According to the coating application procedure design, the bottom coating design, the top coating design scheme and control parameters, the coating is applied to the sprayed surface by using the first irregular body 2.

[0040] The present invention discloses a process equipment for coating thin-walled parts of engines. The equipment uses a first irregular body 2 and a second irregular body 3 with positive and negative designs to press the thin-walled parts of aerospace engines together, thereby achieving an indirect wall thickness "thickening" effect. This effectively solves the processing technical problems of thin-walled parts in the thermal barrier coating process, and can achieve qualified delivery of thin-walled parts and high-quality, high-reliability service of aerospace aircraft.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the technical solution of the present invention in any way. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can be modified and replaced in several simple ways, and these modifications and replacements are all within the scope of protection covered by the claims.

Claims

1. A process equipment for coating thin-walled engine parts, characterized in that, The device includes an annular chassis (1), with a central ring for use with a base. The chassis (1) has eight first irregular bodies (2) or eight second irregular bodies (3). Both the first irregular bodies (2) and the second irregular bodies (3) are arc-shaped, and the bending directions of the first irregular bodies (2) and the second irregular bodies (3) are opposite. The first irregular body (2) is in contact with the non-coated surface of the thin-walled component and is detachably connected to the thin-walled component. The second irregular body (3) is in contact with the non-coated surface of the thin-walled component and is detachably connected to the thin-walled component.

2. The equipment for coating thin-walled engine parts according to claim 1, characterized in that, Both the first alien body (2) and the second alien body (3) can be detachably connected to the chassis (1).

3. The equipment for coating thin-walled engine parts according to claim 1, characterized in that, The first irregular body (2) and the second irregular body (3) are provided with a mounting plate (12) on the side near the chassis (1), and the mounting plate (12) and the chassis (1) are connected by screws (4).

4. The equipment for coating thin-walled engine parts according to claim 3, characterized in that, The mounting plate (12) is provided with a first positioning hole, and the chassis (1) is provided with a second positioning hole (8). The first positioning hole and the second positioning hole (8) are coaxial and connected by a positioning pin (5).

5. The equipment for coating thin-walled engine parts according to claim 4, characterized in that, There are two of each of the first positioning hole and the second positioning hole (8), and they correspond one to one.

6. The equipment for coating thin-walled engine parts according to claim 5, characterized in that, The threaded hole (9) for connecting the mounting plate (12) is located between the two positioning holes.

7. The equipment for coating thin-walled engine parts according to claim 3, characterized in that, With the side of the first irregular body (2) with the bending direction as the front, the plate shape of the first irregular body (2) is completely in contact with the non-sprayed surface of the thin-walled part. The bottom of the first irregular body (2) is connected to the mounting plate (12), and a raised boss (10) is provided at the connection between the bottom and the mounting plate (12). The boss (10) is located on the back of the first arc plate.

8. The equipment for coating thin-walled engine parts according to claim 3, characterized in that, With the side of the second irregular body (3) with the bending direction as the front, the plate shape of the second irregular body (3) is completely in contact with the sprayed surface of the thin-walled part. The bottom of the second irregular body (3) is connected to the mounting plate (12), and a downward inclined platform (11) is provided at the connection between the bottom and the mounting plate (12). The higher end of the inclined platform (11) is connected to the tail, and the lower end is connected to the mounting plate (12). The inclined platform (11) is located on the front of the second irregular body (3).

9. The equipment for coating thin-walled engine parts according to claim 1, characterized in that, Multiple through holes are provided on the first irregular body (2) and the second irregular body (3), which are used to connect with the thin-walled part.

10. A process method for coating thin-walled engine parts, employing the process equipment for coating thin-walled engine parts as described in any one of claims 1 to 9, characterized in that, include: S1, eight second alien bodies (3) are installed on the chassis (1); S2, the sprayed surface of the thin-walled part is attached to the second irregular body (3), and the thin-walled part and the second irregular body (3) are connected; S3, Sandblasting pretreatment is performed on the non-coated surface of thin-walled parts; S4, eight first alien bodies (2) are installed on another chassis (1); S5, attach the non-coated surface of the thin-walled part to the first irregular body (2), and connect the thin-walled part and the first irregular body (2); S6, pre-treat the sprayed surface of thin-walled parts by sandblasting; S7, eight first alien bodies (2) are installed on another chassis (1); S8, the uncoated surface of the thin-walled part is attached to the first irregular body (2), and the thin-walled part and the first irregular body (2) are connected; S9 is used to apply a coating to the sprayed surface of thin-walled parts.

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