A tooling fixture for blade chemical vapor infiltration of aluminum and a process method thereof

Abstract

The application provides a tool clamp for blade chemical vapor aluminum infiltration and a process method thereof, and belongs to the technical field of machinery. The tool clamp solves the problem that the existing high-temperature-resistant processing equipment for blades cannot perform aluminum infiltration coating on the inner cavity of the blade. The tool clamp for blade chemical vapor aluminum infiltration comprises a supporting assembly, a reaction kettle, a preheating assembly, a gas pipe, a supporting disc and a clamp. In the application, the supporting disc diffuses the remaining intermediate gas into the clamp, and then the inside of the blade is sprayed by the clamp, so that the intermediate gas chemically reacts with nickel in the blade, and a nickel-chlorine coating is formed on the inner cavity of the blade.

Description

Technical Field

[0001] This invention belongs to the technical field of high-temperature resistant treatment equipment for blades, and relates to a tooling fixture and process method for chemical vapor phase aluminizing of blades. Background Technology

[0002] High-temperature blades are the most critical components of aero-engines and gas turbines (referred to as "two engines"). Currently, the blades of "two engines" are developing towards lightweight, high thrust, and long service life. This requires increasing the temperature of the gas at the turbine front end, which also poses a huge challenge to the high-temperature resistance of the blades. To improve the high-temperature resistance of the blades, aluminizing coating is required. However, existing processing equipment cannot perform aluminizing coating on the inner cavity of the blades, resulting in poor high-temperature resistance of the blades. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a tooling fixture and process method for chemical vapor deposition of blades, capable of applying an aluminizing coating to the inner cavity of blades.

[0004] The objective of this invention can be achieved through the following technical solution: a tooling fixture for chemical vapor aluminizing of blades, comprising: Reactor; A support assembly is disposed inside the reactor, and a preheating assembly is provided on the support assembly; A vent pipe is provided on the preheating component and is connected to the preheating component. A support plate is installed on the vent pipe. The support plate is connected to the vent pipe and is connected to the interior of the reactor. A clamp for installing blades is placed on the support plate. The clamp is connected to the corresponding support plate and is connected to the interior of the blades.

[0005] In the above-mentioned tooling fixture for chemical vapor aluminizing of blades, the vent pipe includes a second pipe body for connecting a support plate, a first pipe body is provided between two adjacent second pipe bodies, the first pipe body and the second pipe body are connected by a connecting sleeve, a plurality of second vent holes for communicating with the support plate are provided on the side of the second pipe body, and the first pipe body and the second pipe body are coaxially arranged.

[0006] In the above-mentioned tooling fixture for chemical vapor aluminizing of blades, the interior of the support disk is hollow, and multiple partitions are arranged around the central axis of the support disk. Each partition has multiple holes, and the support disk has multiple external holes communicating with the interior of the reactor. The support disk also has a first vent hole communicating with the fixture.

[0007] In the above-mentioned tooling fixture for chemical vapor deposition of blades, the fixture has a through hole and a stepped groove for mounting the blade is provided on one end face of the fixture, and the stepped groove communicates with the through hole.

[0008] In the aforementioned tooling fixture for chemical vapor aluminizing of blades, the preheating assembly is provided with multiple vertically arranged support rods, and adjacent support rods are connected by multiple connecting rods. Each support rod is detachably connected with the same number of limiting blocks as the support plate. One side of each limiting block abuts against the side of the support plate, and each limiting block has a limiting strip on the side facing the support plate, with the limiting strip abutting against the upper end face of the support plate.

[0009] In the aforementioned tooling fixture for chemical vapor aluminizing of blades, the preheating assembly includes a housing disposed on a support assembly, and a plurality of first preheating plates and second preheating plates are stacked inside the housing, with the first preheating plates and second preheating plates arranged alternately.

[0010] In the aforementioned tooling fixture for chemical vapor deposition of blades, both the first preheating plate and the second preheating plate include an outer plate and an inner plate for holding aluminum granules, wherein the inner plate and the outer plate are coaxially arranged.

[0011] In the aforementioned tooling fixture for chemical vapor deposition of blades, the bottom surface of the first preheating plate is provided with a connecting hole located outside the inner plate; the center of the second preheating plate is provided with a vent hole; a vent sleeve is provided around the vent hole on the second preheating plate; the vent sleeve is provided with multiple third vent holes; a cap is provided at the top of the inner shell; a base for supporting the first and second preheating plates is provided inside the outer shell; the cap, the first preheating plate, the second preheating plate, and the base are connected by multiple studs; the top of the studs is connected to the top of the inner shell; nuts are installed at both ends of the studs; a connecting pipe for connecting a vent pipe is provided in the middle of the cap; an air inlet pipe is inserted in the middle of the base, and the air inlet pipe passes through the support assembly.

[0012] In the aforementioned tooling fixture for chemical vapor deposition of blades, the reactor includes a base for mounting a support assembly. A reaction shell is mounted on the base, and a detection tube is provided on the base. Multiple thermocouples are installed inside the detection tube. The support assembly includes a graphite frame mounted on the base, a graphite plate is mounted on the graphite frame, and graphite carbon felt is mounted on the graphite plate. An air inlet head is provided on the base, and an air inlet pipe passes through the base and is inserted into the air inlet head. An air inlet port is provided on the side of the air inlet head, and an air inlet hole communicating with the air inlet port is provided on the side of the air inlet pipe. An exhaust pipe passes through the base.

[0013] A process method for a tooling fixture for chemical vapor deposition of blades includes the following steps: S1. Secure the blade to the clamp inside the reactor and connect the blade to the clamp. Place the clamp on the support plate and connect the clamp to the support plate. S2. After heating the entire reactor to the predetermined temperature, aluminum trichloride gas and hydrogen gas are introduced into the preheating component so that after the aluminum particles in the preheating component react, part of the aluminum trichloride gas diffuses into the interior of the reactor through the support plate to achieve spraying on the outer surface of the blade; the other part is sprayed on the interior of the blade through the support plate and clamp to form a nickel chloride coating on both the inner and outer surfaces of the blade. S3. After the first predetermined ventilation time, stop ventilation and heating, then cool for the second predetermined time before removing the blades.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the support plate of the tooling fixture diffuses part of the intermediate gas into the interior of the reactor, thereby spraying the surface of the blades so that the intermediate gas reacts chemically with the nickel in the blades to form a nickel chloride coating on the outer surface of the blades; at the same time, the support plate diffuses another part of the intermediate gas into the fixture, and then sprays the interior of the blades through the fixture so that the intermediate gas reacts chemically with the nickel in the blades to form a nickel chloride coating in the inner cavity of the blades. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the tooling fixture in this invention.

[0016] Figure 2 yes Figure 1 A schematic diagram of the internal structure after the heating cover has been removed.

[0017] Figure 3 yes Figure 2 A schematic diagram of the structure after the reaction shell has been removed.

[0018] Figure 4 It is an assembly diagram of the vent pipe, support plate, support rod and limit block.

[0019] Figure 5 This is a schematic diagram of the fixture.

[0020] Figure 6 This is a schematic diagram of the internal structure of the preheating component and the support component.

[0021] In the figure, the components are: reactor 100, base 110, exhaust pipe 111, reaction shell 120, detection pipe 130, thermocouple 131, air inlet head 140, air inlet 141, support assembly 200, graphite frame 210, graphite plate 220, graphite carbon felt 230, preheating assembly 300, outer shell 310, first preheating plate 320, connecting hole 321, second preheating plate 330, vent hole 331, vent sleeve 332, third vent 3321, outer plate 340, inner plate 350, cover 360, and connecting pipe 361. Chassis 370, air intake pipe 371, air intake hole 3711, stud 380, nut 381, vent pipe 400, second pipe body 410, second convex ring 411, second air hole 412, first pipe body 420, connecting sleeve 430, support plate 500, partition plate 510, partition hole 511, external discharge hole 520, first air hole 530, clamp 600, through hole 610, stepped groove 630, support rod 700, connecting rod 710, limit block 720, limit strip 721, heating cover 800, heating module 810. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] Example 1 like Figure 1 — Figure 6 As shown, the tooling fixture for chemical vapor aluminizing of blades according to the present invention includes a support assembly 200, a reaction vessel 100, a preheating assembly 300, a vent pipe 400, a support plate 500, and a clamp 600.

[0024] In this invention, aluminum chloride gas and aluminum dichloride gas are collectively referred to as intermediate gases.

[0025] A support assembly 200 is disposed within the reactor 100. A preheating assembly 300 is mounted on the support assembly 200. A vent pipe 400 is disposed on and connected to the preheating assembly 300. Multiple support plates 500 are mounted on the vent pipe 400, each connected to the vent pipe 400 and connected to the interior of the reactor 100. Each support plate 500 has at least [missing information - likely a number or item]. A clamp 600 for mounting blades is provided. The clamp 600 is connected to a corresponding support plate 500 and to the interior of the blade. During operation, the blade is clamped onto the clamp 600 and connected to it. The clamp 600 is then placed on the support plate 500 and connected to it. Afterward, the entire reactor 100 is heated to a predetermined temperature, and aluminum trichloride gas is introduced into the preheating assembly 300. When aluminum trichloride gas passes through aluminum particles with hydrogen, an intermediate gas is generated. This intermediate gas then enters the support plate 500 through the vent pipe 400. Subsequently, the support plate 500 diffuses part of the intermediate gas into the interior of the reactor 100, thereby spraying the surface of the blade. At the same time, the support plate 500 diffuses the remaining intermediate gas into the clamp 600, which then sprays the interior of the blade. In this way, the inner cavity and outer surface of the blade can be sprayed simultaneously. When the intermediate gas comes into contact with the blade, it reacts chemically with the nickel in the blade to form a nickel chloride coating on both the inner and outer surfaces of the blade. After a first predetermined time of venting, venting and heating are stopped, and the blade is cooled for a second predetermined time. The reactor 100 is then opened, and the blade is removed. A permeation hole (not shown in the figure) is provided on the side of the blade, which connects the interior and exterior of the blade, allowing the intermediate gas in the clamp to smoothly enter the interior of the blade.

[0026] like Figure 1 — Figure 5As shown, the vent pipe 400 includes a second pipe body 410 for connecting the support plate 500. A first pipe body 420 is provided between two adjacent second pipe bodies 410. The first pipe body 420 and the second pipe body 410 are connected by a connecting sleeve 430. An inner support ring (not shown in the figure) is provided on the inner wall of the connecting sleeve 430. The first pipe body 420 and the second pipe body 410 are coaxially arranged. Before assembling the first pipe body 420 and the second pipe body 410, the support plate 500 must first be installed on the second pipe body 410. After that, the adjacent first pipe bodies are installed. When connecting the first tube 420 and the second tube 410, one end of the first tube 420 needs to be inserted into the connecting sleeve 430 and made to abut against the inner support ring. Then, one end of the second tube 410 is inserted into the connecting sleeve 430 and made to abut against the inner support ring. In this way, the adjacent first tube 420 and second tube 410 can be connected together. After installation, since the connecting sleeve 430 is coaxial with the first tube 420 and the second tube 410 is coaxial with the connecting sleeve 430, the coaxiality of the first tube 420 and the second tube 410 can be guaranteed.

[0027] The second tube body 410 is provided with a second convex ring 411 for mounting the support plate 500. The second convex ring 411 is provided with a stepped annular groove (not marked in the figure) for mounting the support plate 500. The side of the second tube body 410 is provided with a plurality of second vent holes 412 for connecting the support plate 500. The second vent holes 412 are connected to the second tube body 410. Each second convex ring 411 has two stepped annular grooves, and the second vent holes 412 are located between the two stepped annular grooves. During installation, the second convex ring 411 of the second tube body 410 needs to be passed through the middle of the support plate 500, and the upper / lower end faces of the support plate 500 are respectively engaged in the corresponding stepped annular grooves to realize the installation of the support plate 500 on the second tube body 410. Furthermore, the setting of the stepped annular groove effectively improves the sealing effect between the support plate 500 and the second tube body 410, ensuring that the gas in the second tube body 410 can be smoothly discharged into the support plate 500 through the second vent holes 412.

[0028] The support disk 500 is hollow inside. Multiple partitions 510 are arranged around the central axis of the support disk 500. Each partition 510 has multiple perforations 511. When gas enters the support disk 500 through the second vent 412, it diffuses through the perforations 511 in the partitions 510 to various corners inside the support disk 500. Furthermore, the support disk 500 has multiple vent holes 520 communicating with the interior of the reactor 100. When gas diffuses to the vent holes 520, it escapes into the interior of the reactor 100 through these vent holes. Additionally, the support disk 500 has a first vent 530 communicating with the clamp 600. When gas diffuses to the first vent 530, it escapes into the clamp 600 through these vent holes. Then, the clamp 600 is used to spray the inner wall of the blades.

[0029] The fixture has a through hole, and the top surface of the fixture 600 has a stepped groove 630 for mounting the blade. The stepped groove 630 is connected to the through hole 610. During installation, the bottom of the blade needs to be clamped in the stepped groove 630. During the spraying process, the gas enters the fixture 600 through one end of the through hole 610 and then escapes to the other end of the through hole 610. The bottom of the blade has a through hole (not shown in the figure), which is connected to the inner cavity of the blade. Therefore, the gas escaping through the through hole 610 will enter the inner cavity of the blade through the through hole, thereby spraying the inner wall of the blade.

[0030] The preheating assembly 300 is provided with multiple vertically arranged support rods 700. Adjacent support rods 700 are connected by multiple connecting rods 710. Each support rod 700 is detachably connected to a limiting block 720, the same number as the support plate 500. One side of each limiting block 720 abuts against the side of the support plate 500. Each limiting block 720 has a limiting strip 721 on its side facing the support plate 500, the limiting strip 721 abutting against the upper surface of the support plate 500. There are three support rods 700 in total, and adjacent support rods... The central angle between the three limiting blocks 720 on the same horizontal plane is 120°. During installation, after the second tube 410 is installed on the first tube 420, the limiting blocks 720 need to be adjusted so that the height of the adjusting block is flush with the height of the corresponding support plate 500, and the side of the adjusting block facing the limiting strip 721 contacts the side of the support plate 500. The limiting strip 721 abuts against the upper surface of the support plate 500. In this way, the support plate 500 can be prevented from swaying left and right when it is in use.

[0031] like Figure 1 — Figure 2 and Figure 6 As shown, the preheating component 300 includes a housing 310 disposed on the support component 200. Multiple first preheating plates 320 and second preheating plates 330 are stacked inside the housing 310. The first preheating plates 320 and second preheating plates 330 are arranged alternately. Aluminum granules are placed on both the first preheating plates 320 and the second preheating plates 330. When the preheating component 300 reaches a preset temperature, aluminum trichloride gas is introduced into the interior of the preheating component 300. The aluminum trichloride gas passes through the first preheating plates 320 and the second preheating plates 330 in sequence, so that the aluminum trichloride gas reacts chemically with the aluminum granules to generate an intermediate gas, which diffuses into the vent pipe 400.

[0032] Both the first preheating plate 320 and the second preheating plate 330 include an outer plate 340 and an inner plate 350 for holding aluminum granules. The inner plate 350 is coaxially arranged with the outer plate 340 and is located inside the outer plate 340. The bottom surface of the first preheating plate 320 is provided with a connecting hole 321, which is located outside the inner plate 350. The center of the second preheating plate 330 is provided with a vent hole 331, and a vent sleeve 332 is provided around the vent hole 331 on the second preheating plate 330. The gas jacket 332 is provided with multiple third air holes 3321. The top of the inner part of the outer shell 310 is provided with a cover 360. The inner part of the outer shell 310 is provided with a base 370 for supporting the first preheating plate 320 and the second preheating plate 330. The cover 360, the first preheating plate 320, the second preheating plate 330 and the base 370 are connected by multiple studs 380. The top of the studs 380 is connected to the top of the inner part of the outer shell 310. Nuts 381 are installed at both ends of the studs 380.The cover 360 has a connecting pipe 361 in the middle for connecting to the vent pipe 400. The chassis 370 has an air inlet pipe 371 inserted in the middle, which passes through the support assembly 200. Adjacent to the chassis 370 is a first preheating plate 320, and another first preheating plate 320 is adjacent to the cover 360. The top surface of the outer plate 340 is higher than the top surface of the inner plate 350. During installation, it is necessary to ensure that the edge of the upper surface of the chassis 370 is in close contact with the adjacent first preheating plate 320. At the bottom, the top surface of the outer plate 340 of the uppermost first preheating plate 320 is tightly against the cover 360, the top surface of the remaining outer plates 340 of the first preheating plate 320 is tightly against the bottom surface of the second preheating plate 330, and the top surface of the outer plates 340 of all the second preheating plates 330 is tightly against the bottom surface of the first preheating plate 320. This effectively improves the sealing effect between the chassis 370 and the first preheating plate 320, between the first preheating plate 320 and the second preheating plate 330, and between the first preheating plate 320 and the cover 360. When aluminum trichloride gas enters the chassis 370, it enters the interior of the first preheating plate 320 through the connecting hole 321. Then, the aluminum trichloride gas gathers at the vent hole 331 of the second preheating plate 330, that is, it converges towards the inner disk 350 of the first preheating plate 320. Finally, the mixture of aluminum trichloride gas and the intermediate gas passes through the vent hole 331, the vent sleeve 332, and the third vent 3321. The gas enters the second preheating plate 330 and diffuses outwards. Then, it enters the first preheating plate 320 through the connecting hole 321. This allows the gas to flow in a concentrated → dispersed → concentrated → dispersed → concentrated manner between the numerous first preheating plates 320 and the second preheating plate 330. Finally, it enters the vent pipe 400 through the connecting pipe 361 on the cover 360, ensuring that the aluminum trichloride gas can fully react with the aluminum particles on each inner plate 350.

[0033] The reactor 100 includes a base 110 for mounting a support assembly 200. A reaction shell 120 is mounted on the base 110. A detection tube 130 is provided on the base 110, and multiple thermocouples 131 are provided inside the detection tube 130. The bottom thermocouple 131 is aligned with the side of the preheating assembly 300, and the remaining thermocouples 131 are aligned with clamps 600 located on the support plate 500. A heating cover 800 for heating the reactor 100 is provided around the reactor 100. Each thermocouple 131 and the heating cover 800 are electrically connected to the control system of the tooling clamp 600. During operation, the thermocouples 131 constantly detect the temperature inside the reactor 100 and feed it back to the control system of the tooling clamp 600. The control system then controls the heating cover 800 to heat the reactor 100 so that the temperature inside the reactor 100 can be maintained at a preset temperature.

[0034] The support assembly 200 includes a graphite frame 210 mounted on a base 110, a graphite plate 220 mounted on the graphite frame 210, and a graphite carbon felt 230 mounted on the graphite plate 220. Through the action of the graphite plate 220 and the graphite carbon felt 230, the temperature inside the reactor 100 can be blocked, reducing temperature loss.

[0035] An air inlet head 140 is provided on the base 110. The air inlet pipe 371 passes through the base 110 and is inserted into the air inlet head 140. An air inlet port 141 is provided on the side of the air inlet head 140. An air inlet hole 3711 communicating with the air inlet port 141 is provided on the side of the air inlet pipe 371. When aluminum trichloride gas is introduced into the air inlet head 140 through the inlet port, the gas will enter the air inlet pipe 371 through the air inlet hole 3711. Then, it is transferred to the preheating component 300 by the air inlet pipe 371.

[0036] An exhaust pipe 111 is installed on the base 110. When the gas in the reactor 100 sinks to the bottom of the reactor 100, it will be discharged to the outside through the exhaust pipe 111. In this way, a collection device can be installed at the exhaust pipe 111 to achieve the purpose of recycling and reuse.

[0037] Furthermore, the heating cover 800 is provided with the same number of heating modules 810 as the thermocouples 131. The height of each heating module 810 is different. The thermocouples 131 are located between the upper and lower parts of the heating module 810, and it is ensured that one heating module 810 is aligned with the preheating module, and the remaining heating modules 810 are aligned with the clamps 600 and blades on each layer of support plate 500, so that each heating module 810 heats different objects respectively. Furthermore, in this invention, the heating modules can be infrared ceramic heating plates or quartz infrared heating coils.

[0038] The following are two chemical reactions that occur in the preheating module (keeping the temperature of the preheating module above 800°C): AlCl3 + 2Al → 3AlCl 2AlCl3 + Al → 3AlCl2 The following describes the chemical reaction between the intermediate gas and nickel in the blades (with the temperature controlled between 800°C and 1160°C): 3AlCl + 2Ni → 2NiAl + AlCl3 AlCl₂ + H₂ + Ni → NiAl + 2HCl Example 2 This embodiment describes a process method for a tooling fixture 600 used for chemical vapor deposition of blades, including the following steps: S1. Open the reaction shell 120 of the reactor 100, clamp the bottom of the blade onto the stepped groove 630 of the clamp 600, and make the blade communicate with the clamp 600. Place the clamp 600 on the support plate 500, and make the through hole 610 of the clamp 600 communicate with the support plate 500. Close the reaction shell 120 of the reactor 100. S2. The entire reactor 100 is heated to a predetermined temperature via thermocouple 131. Then, aluminum trichloride gas and hydrogen gas are introduced into the preheating assembly 300. The aluminum trichloride gas flows between the numerous first preheating plates 320 and second preheating plates 330 in a concentrated-dispersed-concentrated-dispersed-concentrated manner. Finally, it enters the vent pipe 400 through the connecting pipe 361 on the cap 360. During this process, the aluminum trichloride gas reacts chemically with the aluminum particles located on the inner plate 350 to produce aluminum chloride gas and aluminum dichloride gas. Afterwards, the aluminum chloride gas and aluminum dichloride gas pass through the vent pipe 400. The gas enters the support plate 500. Part of the aluminum chloride gas and aluminum dichloride gas diffuses into the interior of the reactor 100 through the external vent 520 of the support plate 500, thereby spraying the outer surface of the blades so that the intermediate gas reacts chemically with the nickel in the blades to form a nickel chloride coating on the outer surface of the blades. Another part of the aluminum chloride gas and aluminum dichloride gas diffuses into the clamp 600 through the first vent 530 of the support plate 500. After that, the clamp 600 sprays the interior of the blades so that the intermediate gas reacts chemically with the nickel in the blades to form a nickel chloride coating in the inner cavity of the blades. S3. After the first predetermined time of ventilation, stop ventilation and heating, and then cool for a second predetermined time. Open the reaction shell 120 of the reactor 100 and remove the blade from the clamp 600.

[0039] By using the above-mentioned tooling fixture 600, aluminum chloride gas and a portion of aluminum dichloride gas can be sprayed onto the inner / outer surfaces of the blades to form a nickel chloride coating on the inner / outer surfaces of the blades, thereby effectively improving the high-temperature resistance of the blades.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0041] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A tooling fixture for chemical vapor deposition of blades, characterized in that, include: Reactor; A support assembly is disposed inside the reactor, and a preheating assembly is provided on the support assembly; A vent pipe is provided on the preheating component and is connected to the preheating component. A support plate is installed on the vent pipe. The support plate is connected to the vent pipe and is connected to the interior of the reactor. A clamp for installing blades is placed on the support plate. The clamp is connected to the corresponding support plate and is connected to the interior of the blades.

2. The tooling fixture for chemical vapor deposition of blades according to claim 1, characterized in that, The vent pipe includes a second pipe body for connecting the support plate, a first pipe body is provided between two adjacent second pipe bodies, the first pipe body and the second pipe body are connected by a connecting sleeve, the side of the second pipe body is provided with a plurality of second air holes for communicating with the support plate, and the first pipe body and the second pipe body are coaxially arranged.

3. A tooling fixture for chemical vapor deposition of blades according to claim 2, characterized in that, The interior of the support plate is hollow, and multiple partitions are arranged around its central axis. Each partition has multiple holes. The support plate has multiple external vents that communicate with the interior of the reactor. The support plate also has a first vent that communicates with the clamp.

4. A tooling fixture for chemical vapor deposition of blades according to claim 2, characterized in that, The fixture has a through hole, and one end face of the fixture has a stepped groove for mounting blades, which is connected to the through hole.

5. A tooling fixture for chemical vapor deposition of blades according to claim 1, characterized in that, The preheating component is provided with multiple vertically arranged support rods. Adjacent support rods are connected by multiple connecting rods. Each support rod can be detachably connected with the same number of limiting blocks as the support plate. One side of each limiting block abuts against the side of the support plate. Each limiting block has a limiting strip on the side facing the support plate, and the limiting strip abuts against the upper end face of the support plate.

6. A tooling fixture for chemical vapor deposition of blades according to claim 1, characterized in that, The preheating assembly includes a housing disposed on a support assembly, and a plurality of first preheating plates and second preheating plates are stacked inside the housing, with the first preheating plates and second preheating plates arranged alternately.

7. A tooling fixture for chemical vapor deposition of blades according to claim 6, characterized in that, Both the first preheating plate and the second preheating plate include an outer plate and an inner plate for holding aluminum granules, and the inner plate and the outer plate are coaxially arranged.

8. A tooling fixture for chemical vapor deposition of blades according to claim 7, characterized in that, The first preheating plate has a connecting hole on its bottom surface, which is located outside the inner plate. The second preheating plate has a vent hole at its center, and a vent sleeve is provided around the vent hole on the second preheating plate. The vent sleeve has multiple third vent holes. The top of the inner shell has a cover, and the inner shell has a base for supporting the first and second preheating plates. The cover, the first preheating plate, the second preheating plate, and the base are connected by multiple studs. The top of the studs is connected to the top of the inner shell, and nuts are installed at both ends of the studs. The middle of the cover has a connecting pipe for connecting a vent pipe, and the middle of the base has an air inlet pipe that passes through the support assembly.

9. A tooling fixture for chemical vapor deposition of blades according to claim 1, characterized in that, The reactor includes a base for mounting a support assembly. A reaction shell is mounted on the base. A detection tube is mounted on the base, and multiple thermocouples are installed inside the detection tube. The support assembly includes a graphite frame mounted on the base. A graphite plate is mounted on the graphite frame, and graphite carbon felt is mounted on the graphite plate. An air inlet is mounted on the base. An air inlet pipe passes through the base and is inserted into the air inlet. An air inlet port is provided on the side of the air inlet head. An air inlet hole communicating with the air inlet port is provided on the side of the air inlet pipe. An exhaust pipe passes through the base.

10. A process method for a tooling fixture used in chemical vapor deposition of blades, characterized in that, Includes the following steps: S1. Secure the blade to the clamp inside the reactor and connect the blade to the clamp. Place the clamp on the support plate and connect the clamp to the support plate. S2. After heating the entire reactor to the predetermined temperature, aluminum trichloride gas and hydrogen gas are introduced into the preheating component so that after the aluminum particles in the preheating component react, part of the aluminum trichloride gas diffuses into the interior of the reactor through the support plate to achieve spraying on the outer surface of the blade; the other part is sprayed on the interior of the blade through the support plate and clamp to form a nickel chloride coating on both the inner and outer surfaces of the blade. S3. After the first predetermined ventilation time, stop ventilation and heating, then cool for the second predetermined time before removing the blades.

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