Silicon carburizing / carburizing tool for producing carbon fiber reinforced ceramic-based cylinder material

Abstract

A siliconizing carbon / carbon tool for producing a carbon fiber reinforced ceramic-based cylinder material comprises a siliconizing furnace, a protective cover, an outer cooling cylinder, a motor bearing table, a part to be siliconized, a graphite rod, a cooling cylinder mounting nut, a cooling pipe, a graphite rod butt joint block, a driven chain wheel, a transmission chain, a driving motor, a driving chain wheel and a butt joint screw. The inner siliconizing groove is located in the middle, the silicon powder containing grooves are distributed in the side face of the inner siliconizing groove, the inner siliconizing groove and the silicon powder containing grooves are separated through the partition plate, gaseous silicon seepage holes are formed in the surface of the partition plate, and the gaseous silicon seepage holes, the inner siliconizing groove and the silicon powder containing grooves are communicated with one another. The side face of the siliconizing furnace is provided with two sets of graphite rod installation grooves and four sets of cooling cylinder installation screws, the two sets of graphite rod installation grooves are symmetrically arranged, and the cooling cylinder installation screws are located on the two sides of the graphite rod installation grooves.

Description

Technical Field

[0001] This utility model relates to the field of silicon infiltration production, and in particular to a silicon-infiltrating carbon / carbon tooling for producing carbon fiber reinforced ceramic matrix cylinders. Background Technology

[0002] An existing patent (publication number: CN219709381U) discloses a silicon infiltration device for carbon-ceramic friction materials, including a base plate, a support fixedly provided on the upper surface of the base plate, a reaction tank fixedly provided at the upper end of the support, a detachable cover at the upper end of the reaction tank, an inner cylinder fixedly provided inside the reaction tank, and a gap between the outer wall of the inner cylinder and the inner wall of the reaction tank, with the upper end of the inner cylinder lower than the upper end of the reaction tank. However, in this device, "the output shaft of the motor is vertically upward, and the output shaft of the motor is connected to the lower end of the rotating shaft through a coupling." During the carburizing operation, the output shaft of the motor is directly connected to the lower end of the rotating shaft through the coupling, which may be affected by high temperature. Prolonged high-temperature operation may affect the service life of the motor. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a siliconizing carbon / carbon tooling for producing carbon fiber reinforced ceramic matrix cylinders. This tooling features an external cooling cylinder on the side of a siliconizing furnace, with cooling pipes inside. When the coolant inside the cooling pipes passes the location of the graphite rod, it cools the graphite rod, causing the temperature of the graphite rod to gradually decrease from the siliconizing furnace to the graphite rod mating block. This allows the graphite rod to support the siliconized parts and drive the rotation of the siliconized parts normally and stably, while also preventing the lifespan of the drive motor from being affected by prolonged high-temperature operation.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A silicon-infiltrating carbon / carbon tooling for producing carbon fiber reinforced ceramic matrix tubular materials includes a silicon-infiltrating furnace, a protective cover, an outer cooling cylinder, a motor support platform, parts to be silicon-infiltrated, graphite rods, cooling cylinder mounting nuts, cooling pipes, graphite rod mating blocks, driven sprockets, a transmission chain, a drive motor, a driving sprocket, and mating screws. The silicon-infiltrating furnace has an inner silicon-infiltrating tank and a silicon powder placement tank. The inner silicon-infiltrating tank is centrally located, and the silicon powder placement tanks are distributed on the sides of the inner silicon-infiltrating tank. A partition plate separates the inner silicon-infiltrating tank and the silicon powder placement tanks. The partition plate has gaseous silicon exudation holes on its surface. The gaseous silicon exudation holes, the internal silicon infiltration tank, and the silicon powder placement tank are interconnected. The side of the silicon infiltration furnace has two sets of graphite rod mounting slots and four sets of cooling cylinder mounting screws. The two sets of graphite rod mounting slots are symmetrically arranged. The cooling cylinder mounting screws are located on both sides of the graphite rod mounting slots. An external cooling cylinder is provided on the side of the silicon infiltration furnace. The position of the external cooling cylinder corresponds to the position of the graphite rod mounting slot. The side of the external cooling cylinder facing the silicon infiltration furnace has a cooling cylinder mounting seat, which is pressed against the surface of the silicon infiltration furnace.

[0006] The cooling cylinder mounting screw passes through the cooling cylinder mounting base and is threadedly connected to the cooling cylinder mounting nut. The cooling cylinder mounting nut is pressed against the surface of the cooling cylinder mounting base. A graphite rod is set inside the silicon diffusion furnace. The graphite rod is rotatably connected to the graphite rod mounting groove. The outer cooling cylinder covers the graphite rod. The outer cooling cylinder has a cooling pipe mounting groove inside. The cooling pipe is sleeved on the outside of the graphite rod. The cooling pipe is adapted to the cooling pipe mounting groove. The cooling pipe is connected to the cooling pipe mounting groove and inserted into the cooling pipe mounting groove for fixation.

[0007] The graphite rod is connected to a graphite rod mating block on the side away from the siliconizing furnace. The graphite rod mating block has a graphite rod mating groove inside, which is adapted to the graphite rod and connects to it. The graphite rod mating groove is sleeved on the outside of the graphite rod. The top of the graphite rod mating block has a mating screw groove, and the mating screw is threaded into the mating screw groove. The mating screw is pressed against the side of the graphite rod. The side of the graphite rod mating block away from the graphite rod has a connecting sprocket mounting post.

[0008] The driven sprocket is fixedly connected to the end of the sprocket mounting post. A motor support platform is provided at the bottom of the outer cooling cylinder. A cooling cylinder connecting platform is provided at the top of the motor support platform. The outer cooling cylinder is fixedly connected to the side of the cooling cylinder connecting platform. A drive motor is fixedly connected to the middle of the motor support platform. The drive motor has a transmission shaft that is fixedly connected to the drive sprocket.

[0009] Beneficial effects: 1. When performing silicon infiltration on carbon fiber reinforced ceramic matrix cylinders, silicon powder is placed inside the silicon powder placement tank, and the part to be silicon infiltrated is placed on top of the graphite rod array. The silicon infiltration furnace is continuously heated until the silicon powder melts and the gaseous silicon comes into contact with the part to be silicon infiltrated, thus completing the silicon infiltration operation. During the silicon infiltration process, the drive motor drives the graphite rods to rotate through the drive sprocket, transmission chain, driven sprocket, and graphite rod docking block, so that the part to be silicon infiltrated keeps rotating during the silicon infiltration process, facing the gaseous silicon with different densities at different positions inside the silicon infiltration furnace. This ensures that each position of the part to be silicon infiltrated comes into contact with gaseous silicon of different densities, making the silicon distribution inside the part to be silicon infiltrated more uniform, thereby increasing the mechanical properties of the part to be silicon infiltrated after silicon infiltration.

[0010] 2. During carburizing operations inside the siliconizing furnace of this utility model, an external cooling cylinder is provided on the side of the furnace, and a cooling pipe is provided inside the external cooling cylinder. When the coolant inside the cooling pipe passes the location of the graphite rod, it cools the graphite rod, so that the temperature of the graphite rod gradually decreases from the siliconizing furnace to the graphite rod mating block. The temperature at the contact point between the graphite rod and the graphite rod mating block is reduced to a range where the graphite rod mating block, driven sprocket, transmission chain, driving sprocket, and drive motor can all work normally. This allows the graphite rod to support the siliconized parts and drive the rotation of the siliconized parts to be performed normally and stably, while also avoiding the impact on the service life of the drive motor under long-term high-temperature operation.

[0011] 3. The graphite rod of this utility model has a hollow groove on its surface. The hollow design of the hollow groove makes it easier for gaseous silicon to come into contact with the part to be siliconized, thereby reducing the shielding effect of the graphite rod on the gaseous silicon and increasing the contact effect between the gaseous silicon and the part to be siliconized, thereby increasing the siliconizing effect and siliconizing efficiency of this device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a silicon-diluting carbon / carbon tooling structure for producing carbon fiber reinforced ceramic matrix cylinders, as described in this utility model.

[0013] Figure 2 This is a partially enlarged view of a silicon-diffused carbon / carbon tooling for producing carbon fiber reinforced ceramic matrix cylinders, as described in this utility model.

[0014] Figure 3 This is a side cross-sectional view of a silicon-diffused carbon / carbon tooling for producing carbon fiber reinforced ceramic matrix cylinders, as described in this utility model.

[0015] Figure 4 This is a schematic diagram of the silicon infiltration furnace structure described in this utility model.

[0016] Figure 5 This is a schematic diagram of the motor support platform structure described in this utility model.

[0017] Figure 6 This is a schematic diagram of the external cooling cylinder structure described in this utility model.

[0018] Figure 7 This is a schematic diagram of the graphite rod structure described in this utility model. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0020] Example 1:

[0021] A silicon-infiltrating carbon / carbon tooling for producing carbon fiber reinforced ceramic matrix tubular materials includes a silicon-infiltrating furnace 1, a protective cover 2, an outer cooling cylinder 3, a motor support platform 5, parts to be silicon-infiltrated 6, graphite rods 7, cooling cylinder mounting nuts 11, cooling pipes 13, graphite rod connecting blocks 14, driven sprockets 16, transmission chains 17, drive motors 18, driving sprockets 19, and connecting screws 23. The silicon-infiltrating furnace 1 has an inner silicon-infiltrating tank 24 and a silicon powder placement tank 26. The inner silicon-infiltrating tank 24 is centrally located, and the silicon powder placement tank 26 is divided into... The silicon infiltration tank 24 is arranged on the side of the silicon infiltration tank 24. The silicon infiltration tank 24 and the silicon powder placement tank 26 are separated by a partition plate 27. The surface of the partition plate 27 has gaseous silicon exudation holes 25. The gaseous silicon exudation holes 25, the silicon infiltration tank 24, and the silicon powder placement tank 26 are interconnected. When performing silicon infiltration operation on carbon fiber reinforced ceramic matrix cylinder, silicon powder is placed inside the silicon powder placement tank 26, and then the part 6 to be silicon infiltrated is placed on the top of the graphite rod 7 array. The inside of the silicon infiltration furnace 1 is continuously heated until the silicon powder melts and the gaseous silicon and the silicon to be silicon infiltrated are mixed. The siliconizing process on the part 6 is completed by contacting it with the silicon-infiltrating component 6. During the siliconizing process, the drive motor 18 drives the graphite rod 7 to rotate via the drive sprocket 19, transmission chain 17, driven sprocket 16, and graphite rod docking block 14. This ensures that the part 6 to be siliconized remains rotated throughout the siliconizing process, facing the gaseous silicon of different densities at various locations inside the siliconizing furnace 1. This ensures that all locations of the part 6 to be siliconized are in contact with gaseous silicon of different densities, resulting in a more uniform distribution of silicon within the part 6. To improve the mechanical properties of the silicon-diluting part 6 after silicon diluting, the silicon diluting furnace 1 has two sets of graphite rod mounting slots 20 and four sets of cooling cylinder mounting screws 9 on its side. The two sets of graphite rod mounting slots 20 are symmetrically arranged, and the cooling cylinder mounting screws 9 are located on both sides of the graphite rod mounting slots 20. An external cooling cylinder 3 is provided on the side of the silicon diluting furnace 1. The position of the external cooling cylinder 3 corresponds to the position of the graphite rod mounting slots 20. The side of the external cooling cylinder 3 facing the silicon diluting furnace 1 has a cooling cylinder mounting seat 10, and the cooling cylinder mounting seat 10 is pressed against the surface of the silicon diluting furnace 1.

[0022] Example 2:

[0023] The cooling cylinder mounting screw 9 of this utility model passes through the cooling cylinder mounting base 10 and is threadedly connected to the cooling cylinder mounting nut 11. The cooling cylinder mounting nut 11 is pressed against the surface of the cooling cylinder mounting base 10. A graphite rod 7 is installed inside the siliconizing furnace 1. During carburizing operations inside the siliconizing furnace 1, an external cooling cylinder 3 is installed on the side of the siliconizing furnace 1. The external cooling cylinder 3 and the internal cooling pipe 13 are also provided. When the coolant inside the cooling pipe 13 passes the location of the graphite rod 7, it cools the graphite rod 7, causing the temperature of the graphite rod 7 to gradually decrease from the siliconizing furnace 1 to the graphite rod mating block 14. The temperature at the contact point between the graphite rod 7 and the graphite rod mating block 14 is reduced to the temperature of the graphite rod mating block 14 and the driven part. The sprocket 16, transmission chain 17, drive sprocket 19, and drive motor 18 can all operate normally, allowing the graphite rod 7 to support the silicon-doped part 6 and drive the silicon-doped part 6 to rotate normally and stably. At the same time, it also avoids the lifespan of the drive motor 18 being affected by long-term high-temperature operation. The graphite rod 7 is rotatably connected to the graphite rod mounting slot 20. The outer cooling cylinder 3 covers the graphite rod 7. The outer cooling cylinder 3 has a cooling pipe mounting slot 12 inside. The cooling pipe 13 is sleeved on the outside of the graphite rod 7. The cooling pipe 13 is adapted to the cooling pipe mounting slot 12. The cooling pipe 13 is connected to the cooling pipe mounting slot 12 and inserted into the cooling pipe mounting slot 12 for fixation.

[0024] Example 3:

[0025] The graphite rod 7 of this invention is connected to a graphite rod docking block 14 on the side away from the siliconizing furnace 1. The graphite rod docking block 14 has a graphite rod docking groove 21 inside, which is adapted to the graphite rod 7 and connects to the graphite rod 7. The surface of the graphite rod 7 is provided with a hollow groove 8. Through the hollow design of the hollow groove 8, the gaseous silicon can more easily pass through the hollow groove 8 and contact the part 6 to be siliconized, thereby reducing the shielding effect of the graphite rod 7 on the gaseous silicon and increasing the contact effect between the gaseous silicon and the part 6 to be siliconized, thereby increasing the siliconizing effect and siliconizing efficiency of this device. The graphite rod docking groove 21 is fitted on the outside of the graphite rod 7. The top of the graphite rod docking block 14 has a docking screw groove 22, and the docking screw 23 is threadedly connected to the docking screw groove 22. The docking screw 23 is pressed against the side of the graphite rod 7. The side of the graphite rod docking block 14 away from the graphite rod 7 has a connecting sprocket mounting post 15.

[0026] Example 4:

[0027] The sprocket mounting post 15 of this utility model is fixedly connected to the driven sprocket 16 at its end. The bottom of the outer cooling cylinder 3 is provided with a motor support platform 5. The top of the motor support platform 5 is provided with a cooling cylinder connecting platform 4. The outer cooling cylinder 3 is fixedly connected to the side of the cooling cylinder connecting platform 4. The middle of the motor support platform 5 is fixedly connected to a drive motor 18. The drive motor 18 has a transmission shaft that is fixedly connected to a drive sprocket 19.

[0028] Example 5:

[0029] The active sprocket 19 and the driven sprocket 16 of this utility model are connected by a transmission chain 17. The graphite rod 7 has a hollow groove 8 on the side facing the inside of the siliconizing furnace 1. The siliconizing part 6 is placed inside the siliconizing furnace 1 and placed on the upper part of the graphite rod 7 array group. The protective cover 2 covers the upper part of the siliconizing furnace 1.

[0030] Example 6:

[0031] The installation steps of this utility model are as follows: The cooling cylinder mounting screw 9 of the siliconizing furnace 1 is threaded through the cooling cylinder mounting seat 10 of the outer cooling cylinder 3 and connected to the cooling cylinder mounting nut 11, so that the cooling cylinder mounting seat 10 is pressed tightly against the surface of the siliconizing furnace 1, and the cooling cylinder mounting nut 11 is pressed tightly against the surface of the cooling cylinder mounting seat 10. The graphite rod 7 is rotatably connected to the graphite rod mounting groove 20 of the siliconizing furnace 1, so that the outer cooling cylinder 3 covers the graphite rod 7. The cooling pipe 13 is inserted into the cooling pipe mounting groove 12 of the outer cooling cylinder 3, so that the cooling pipe 13 is sleeved on the outside of the graphite rod 7. The side of the graphite rod 7 away from the siliconizing furnace 1 is connected to the graphite rod connecting block 14. The graphite rod connecting block 14 is... Some graphite rod mating grooves 21 are fitted onto the outside of graphite rod 7. The mating screws 23 are threadedly connected to the mating screw grooves 22 of the graphite rod mating block 14, so that the mating screws 23 are pressed against the side of the graphite rod 7. The end of the connecting sprocket mounting post 15 of the graphite rod mating block 14 is fixedly connected to the driven sprocket 16. The cooling cylinder connecting platform 4 of the motor support platform 5 is fixedly connected to the outer cooling cylinder 3. The middle part of the motor support platform 5 is fixedly connected to the drive motor 18. The transmission shaft of the drive motor 18 is fixedly connected to the driving sprocket 19. The driving sprocket 19 and the driven sprocket 16 are connected through the transmission chain 17. The protective cover 2 is placed on the upper part of the silicon infiltration furnace 1. The installation of this device is completed.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A silicon-infiltrated carbon / carbon tooling for producing carbon fiber reinforced ceramic matrix composites, characterized by : The utility model provides a siliconizing furnace, a protective cover, an outer cooling cylinder, a motor bearing platform, a part to be siliconized, a graphite rod, a cooling cylinder mounting nut, a cooling pipe, a graphite rod butt joint block, a driven sprocket, a transmission chain, a driving motor, a driving sprocket and a butt joint screw, the siliconizing furnace has an inner siliconizing groove and a silicon powder placing groove, the inner siliconizing groove is in a central position, the silicon powder placing groove is distributed on the side of the inner siliconizing groove, the inner siliconizing groove and the silicon powder placing groove are separated by a partition plate, the partition plate has gaseous silicon permeation holes, the gaseous silicon permeation holes, the inner siliconizing groove and the silicon powder placing groove are in communication, the siliconizing furnace has two sets of graphite rod mounting grooves and four sets of cooling cylinder mounting screws, the two sets of graphite rod mounting grooves are symmetrically arranged, the cooling cylinder mounting screws are located on the two sides of the graphite rod mounting grooves, the outer cooling cylinder is arranged on the side of the siliconizing furnace, the position of the outer cooling cylinder corresponds to the position of the graphite rod mounting groove, the outer cooling cylinder has a cooling cylinder mounting seat on the side facing the siliconizing furnace, and the cooling cylinder mounting seat is pressed on the surface of the siliconizing furnace.

2. The silicon-infiltrated carbon / carbon tooling for the production of carbon fiber reinforced ceramic matrix composite cylindrical articles according to claim 1, characterized in that : The cooling cylinder mounting screw passes through the cooling cylinder mounting seat and is threadedly connected with the cooling cylinder mounting nut, the cooling cylinder mounting nut is pressed on the surface of the cooling cylinder mounting seat, the siliconizing furnace is internally provided with the graphite rod, the graphite rod is rotationally connected with the graphite rod mounting groove, the outer cooling cylinder covers the graphite rod, the outer cooling cylinder has a cooling pipe mounting groove, the cooling pipe is sleeved on the outer side of the graphite rod, the cooling pipe is adapted to the cooling pipe mounting groove, the cooling pipe is connected with the cooling pipe mounting groove, and the cooling pipe is inserted into the cooling pipe mounting groove and fixed.

3. The silicon-infiltrated carbon / carbon tooling for the production of carbon fiber reinforced ceramic matrix composite cylindrical articles of claim 2, wherein : The graphite rod is connected with the graphite rod butt joint block on the side away from the siliconizing furnace, the graphite rod butt joint block has a graphite rod butt joint groove, the graphite rod butt joint groove is adapted to the graphite rod, the graphite rod butt joint groove is connected with the graphite rod, the graphite rod butt joint groove is sleeved on the outer side of the graphite rod, the graphite rod butt joint block has a butt joint screw groove on the top, the butt joint screw is threadedly connected with the butt joint screw groove, the butt joint screw is pressed on the side of the graphite rod, and the graphite rod butt joint block has a connecting sprocket mounting column on the side away from the graphite rod.

4. The silicon-infiltrated carbon / carbon tooling for the production of carbon fiber reinforced ceramic matrix composite cylindrical articles of claim 3 wherein The chain wheel mounting column (15) is fixedly connected with a driven sprocket (16) at the end, the bottom of the outer cooling cylinder (3) is provided with a motor bearing table (5), the top of the motor bearing table (5) is provided with a cooling cylinder connecting table (4), the side of the cooling cylinder connecting table (4) is fixedly connected with the outer cooling cylinder (3), the middle of the motor bearing table (5) is fixedly connected with a driving motor (18), and the driving motor (18) is fixedly connected with a driving sprocket (19) through a transmission shaft.

5. The silicon-infiltrated carbon / carbon tooling for the production of carbon fiber reinforced ceramic matrix composite cylindrical articles of claim 1 wherein The driving sprocket (19) is connected with the driven sprocket (16) through a transmission chain (17), one side of the graphite rod (7) towards the inside of the siliconizing furnace (1) is provided with a hollow groove (8), the siliconizing parts (6) are placed in the inside of the siliconizing furnace (1), the siliconizing parts (6) are placed on the upper part of the array group of the graphite rods (7), and the protective cover (2) covers the upper part of the siliconizing furnace (1).

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