Spinning pressurizing device for NITE phase connection of conical SiC ceramic tubes and application of spinning pressurizing device

Abstract

The invention belongs to the technical field of ceramic tube NITE phase connection, and discloses a spinning pressurizing device for conical SiC ceramic tube NITE phase connection and application thereof.The device comprises a machine base, an end cover rotating mechanism and a ceramic tube pressurizing mechanism, and the end cover rotating mechanism comprises an end cover rotating motor, a rotating rod, an end cover clamp and a conical ceramic end cover; the ceramic tube pressurizing mechanism comprises a ceramic tube pressurizing motor, a gear, a ceramic tube fixing piece and a ceramic tube; the rotating rod end rotates the conical end cover through a cover rotating motor; the ceramic tube pressurization motor converts torque into force through a gear and a rack guide rail, and pushes the to-be-machined ceramic tube to move forwards to achieve spinning pressurization. The end cover rotating mechanism and the ceramic tube pressurizing mechanism of the device can slowly rotate the conical ceramic end cover and pressurize the conical SiC ceramic tube, the connecting strength of the conical SiC ceramic tube NITE is improved, automatic pressurizing is achieved, the labor cost is reduced, and the device is used for the field of connecting of the conical SiC ceramic tube NITE.

Description

Technical Field

[0001] This invention belongs to the field of ceramic connection technology, specifically, it relates to a pressurization device for connecting tapered SiC ceramic tubes to NITE and its application. Background Technology

[0002] SiC materials possess excellent overall structural properties, exhibiting not only superior high-temperature flexural strength and hardness but also a high melting point, excellent wear resistance, and corrosion resistance. This unique combination of properties has led to the widespread application of SiC ceramics in structural components. However, a key challenge in the practical application of SiC ceramics is its high processing difficulty, which directly restricts the fabrication and mass production of large-size, complex-shaped SiC-based components. Therefore, developing SiC ceramic bonding technology is an effective way to solve these problems, and NITE phase bonding is one of the most common and classic bonding methods in SiC ceramics.

[0003] Currently, the additive systems used for bonding SiC ceramics to the NITE phase mainly include: Different additive systems have different reliable connection temperatures, and the performance and structure of the connectors also differ. In practical applications, a suitable additive system is usually selected based on the structure of the connector and the required reliable connection temperature. The tapered ceramic tube is a high-performance structural component specifically designed for heating and pressurizing connection scenarios. Its core design highlight lies in the integrated composite structure of the tapered end cap and the inner wall of the tube. Both cleverly integrate flat and inclined double contact areas, forming a scientifically sound force transmission system. The flat part enables precise fit of the connection surface, ensuring uniform force distribution during pressurization and avoiding localized stress concentration. The inclined structure, with its unique mechanical angle design, efficiently converts axial pressure load into radial clamping force while dispersing instantaneous impact force, significantly improving the overall structure's compressive strength and preventing ceramic tube breakage due to excessive pressure. It is suitable for advanced ceramic component assembly scenarios with stringent requirements for connection strength and stability. However, without additive systems and liquid phase content, it is difficult to further improve connection strength while lowering the connection temperature, and it may even be impossible to maintain connection strength. Therefore, how to achieve high connection strength in SiC ceramic tube NITE phase connection at a lower temperature has become a technical challenge that urgently needs to be solved. Summary of the Invention

[0004] To address the shortcomings of the existing technology, the primary objective of this invention is to provide a spinning and pressurizing device for connecting the NITE phase of a tapered SiC ceramic tube. This device slowly rotates the tapered SiC ceramic end cap and pressurizes the tapered SiC ceramic tube while the equipment is heated, so that the liquid phase between the connecting surfaces can form a state similar to a threaded connection after cooling and solidification, thereby improving the connection strength of the NITE phase in the tapered SiC ceramic tube and effectively solving the aforementioned problems in tapered SiC ceramic tubes. Another object of the present invention is to provide an application of the above-mentioned spinning pressurization device for connecting the tapered SiC ceramic tube to NITE.

[0005] The objective of this invention is achieved through the following technical solution: A spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE comprises a base, an end cap rotating mechanism, and a ceramic tube pressurizing mechanism. Both the end cap rotating mechanism and the ceramic tube pressurizing mechanism are installed inside the base. The end cap rotating mechanism includes an end cap rotating motor, a rotating rod, an end cap clamp, and a tapered end cap. The tapered end cap is clamped on the end cap clamp, which is fixed to the end of the rotating rod by bolts. The end cap rotating motor rotates the tapered end cap via the rotating rod. The ceramic tube pressurizing mechanism includes a ceramic tube pressurizing motor, gears, a ceramic tube fixing component, and a ceramic tube. One end of the ceramic tube is fixed inside the ceramic tube fixing component. The ceramic tube pressurizing motor converts torque into force via the gears, pushing the ceramic tube forward to achieve pressurization. The end cap rotating mechanism and the ceramic tube pressurizing mechanism are connected by simultaneously clamping the tapered end cap and the ceramic tube and pushing them forward to obtain the ceramic tube to be processed.

[0006] Furthermore, the base is composed of a fixed plate, an aluminum profile, and a working plate. The aluminum profile is disposed on the fixed plate, and the working plate is disposed inside the aluminum profile. The end cover rotation mechanism and the ceramic tube pressurization mechanism are both mounted on the working plate.

[0007] Preferably, the fixing plate is made of cast iron, and the working plate is made of acrylic.

[0008] Furthermore, the end cap rotation mechanism also includes an end cap rotation motor bracket, two bearing seats, two pulleys, and a conveyor belt. The end cap rotation motor is fixed on the end cap rotation motor bracket. A tensioning pulley is provided between the two pulleys. The conveyor belt is located outside the pulleys and tensioning pulley. Each of the two bearing seats has three holes, in which bearings are embedded for fixing and supporting the rotation of the pulleys, tensioning pulleys, and rotating rod. The bearings of the end cap rotation motor drive one pulley, and the other pulley is fixed to the rotating rod by a key and a keyway. The conveyor belt drives the rotation of the other pulley and the tensioning pulley. Circumferential positioning is achieved through the key connection, which drives the rotating rod to rotate. The conical end cap is then fixed by the rotating rod and the end cap clamp, thereby completing the rotation function of the conical end cap.

[0009] Furthermore, the conical end cap is T-shaped with a conical angle, and the closed inner diameter of the end plug clamp is smaller than the outer diameter of the conical angle portion of the conical end plug.

[0010] Furthermore, the ceramic tube pressurizing mechanism also includes a ceramic tube pressurizing motor bracket and a rack and pinion guide rail. The ceramic tube pressurizing motor is fixed on the ceramic tube pressurizing motor bracket. The rack and pinion guide rail has a rack inside. The gear is set on the rack and pinion guide rail through the rack. The ceramic tube pressurizing motor pushes the ceramic tube forward through the gear and rack and pinion guide rail to convert the torque of the pressurizing motor into force for pressurization. The ceramic tube fixing component is fixed to the rack by welding. The ceramic tube fixing component has a groove inside, and the ceramic tube is set in the groove.

[0011] Preferably, the ceramic tube is a cylinder with a conical angle on its inner wall, and the ceramic tube to be processed is a conical end cap and a ceramic tube.

[0012] Furthermore, the end cap clamp includes a U-shaped nut, an end cap clamp, a clamp connecting shaft, a bolt rotating shaft, and a bolt. The end cap clamp is Ω-shaped with holes at both ends. The clamp connecting shaft is connected to the two end cap clamp shafts through one side hole. One end of the bolt is fixed in the end cap clamp through the bolt rotating shaft. The U-shaped nut is screwed onto the other end of the bolt, allowing the bolt and the end cap clamp to rotate. After the bolt rotates out around the bolt rotating shaft, the end cap clamp can be opened and closed, and the end cap can be clamped. After the bolt rotates in around the bolt rotating shaft, the end cap clamp can clamp the conical end cap through the rotating shaft and U-shaped nut.

[0013] The aforementioned spinning and pressurizing device is used in the field of NITE phase connection of tapered SiC ceramic tubes.

[0014] This invention involves preparing a sintering aid in the required proportions, spraying the sintering aid onto the connecting surface of a conical end cap and a cylindrical ceramic tube with a conical inner wall, and pre-pressing it. The equipment is then turned on, the ceramic tube is fixed into a ceramic tube fixing component, and the conical end cap is clamped using an end cap clamp. The end cap clamp is then fixed to a rotating rod with bolts. The required rotation speed of the conical end cap, the ceramic tube pressurization rate, and the various data parameters of the heating device used in conjunction with this spinning and pressurizing device are set. The motors of the end cap rotation mechanism and the ceramic tube pressurization mechanism are then started, and the machine begins to rotate and pressurize.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The end cap rotation mechanism and ceramic tube pressurization mechanism in the spinning pressurization device of the present invention can be used to replace the pressurization device in commercially available equipment that achieves NITE phase connection to SiC ceramic tubes by heating and pressurizing. The principle is that while the equipment is heated, the conical SiC ceramic end cap is slowly rotated and the conical SiC ceramic tube is pressurized, so that the liquid phase between the connection surfaces can form a state similar to a threaded connection after cooling and solidification, thereby improving the connection strength of the NITE phase of the conical SiC ceramic tube.

[0016] The device of this invention has a simple structure and low manufacturing cost; it can further improve the strength of the NITE phase connection of SiC ceramic tubes, realize automatic pressurization or semi-unmanned operation, reduce labor costs, and is used in the field of NITE phase connection of tapered SiC ceramic tubes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the spinning and pressurizing device of the present invention; Figure 2 This is a schematic diagram of the base of the spinning and pressurizing device of the present invention; Figure 3 This is a schematic diagram of the end cap rotating mechanism and the ceramic tube pressurizing mechanism in the spinning pressurizing device of the present invention; Figure 4 This is a schematic diagram of the end cap clamp in the spinning and pressing device of the present invention.

[0018] The components include: 1. Fixing plate; 2. Aluminum profile; 3. Working plate; 4. End cap rotary motor; 5. End cap rotary motor bracket; 6. Bearing seat; 7. Pulley; 8. Conveyor belt; 9. Rotary rod; 10. End cap clamp; 11. Conical end cap; 12. Ceramic tube pressurizing motor; 13. Ceramic tube pressurizing motor bracket; 14. Gear; 15. Rack and pinion guide rail; 16. Ceramic tube fixing piece; 17. Ceramic tube; 18. U-nut; 19. End cap clamp; 20. Clamp connecting shaft; 21. Bolt rotating shaft; 22. Bolt. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to embodiments, but the embodiments of the present invention are not limited thereto. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in this technical field. Example

[0020] A spinning pressurizing device for connecting tapered SiC ceramic tubes to NITE phase, such as Figure 1 As shown, it includes a base, an end cap rotation mechanism, and a ceramic tube pressurization mechanism. The base includes a fixed plate 1, an aluminum profile 2, and a working plate 3. The aluminum profile 2 is mounted on the fixed plate 1, and the working plate 3 is located inside the aluminum profile 2 for fixing the end cap rotation mechanism and the ceramic tube pressurization mechanism.

[0021] The end cap rotation mechanism and the ceramic tube pressurization mechanism are respectively mounted on different working plates 3. The end cap rotation mechanism includes an end cap rotary motor 4, an end cap rotary motor bracket 5, two bearing seats 6, two pulleys 7, a conveyor belt 8, a rotating rod 9, an end cap clamp 10, and a conical end cap 11. The end cap rotary motor 4 is fixed on the end cap rotary motor bracket 5. A tensioning wheel is provided between the two pulleys 7. The conveyor belt 8 is located outside the two pulleys 7 and the tensioning wheel. The two bearing seats 6 are each provided with three holes, in which bearings are embedded to fix and support the rotation of the pulleys 7, the tensioning wheel, and the rotating rod 9. The bearing of the end cap rotary motor 4 drives one pulley 7, and the other pulley 7 is fixed to the rotating rod 9 by a key and a keyway. The conveyor belt 8 drives the rotation of the other pulley 7, the tensioning wheel, and the rotating rod 9 to transmit kinetic energy, maintain constant tension, prevent slippage, and provide overload protection to prevent excessive pressure between the conical end cap 11 and the ceramic tube 17, which could damage the ceramic tube. The end cap clamp 10 is fixed to the end of the rotating rod 9 by bolts, and the conical end cap 11 is clamped on the end cap clamp 10. Powered by the end cap rotary motor 4, the conveyor belt 8 drives the pulley 7 and the tensioning wheel to rotate. The key connection achieves circumferential positioning and drives the rotating rod 9 to rotate. The conical end cap 11 is then fixed by the rotating rod 9 and the end cap clamp 10, thus completing the rotation function of the conical end cap 11.

[0022] The ceramic tube pressurizing mechanism includes a ceramic tube pressurizing motor 12, a ceramic tube pressurizing motor bracket 13, a gear 14, a rack and pinion guide 15, a ceramic tube fixing component 16, and a ceramic tube 17. The ceramic tube pressurizing motor 12 is fixed to the ceramic tube pressurizing motor bracket 13 and is connected to the ceramic tube 17 via the gear 14, rack and pinion guide 15, and ceramic tube fixing component 16. The gear 14 is fixed to the bearing of the ceramic tube pressurizing motor 12 and engages with the rack and pinion guide 15. One end of the ceramic tube 17 is fixed inside the ceramic tube fixing component 16. The ceramic tube pressurizing motor 12, through the gear 14, propels the rack and pinion guide 15, converting the torque of the pressurizing motor 12 into force, thereby pushing the ceramic tube 17 forward to achieve its pressurizing function. The end cap rotation mechanism and the ceramic tube pressurizing mechanism are connected by placing a conical end cap 11 onto the ceramic tube 17.

[0023] Figure 2 This is a schematic diagram of the base of the spinning and pressurizing device of the present invention. The base includes a fixed plate 1, an aluminum profile 2, and a working plate 3. The aluminum profile 2 is disposed on the fixed plate 1, and the working plate 3 is disposed inside the aluminum profile 2 for fixing the end cap rotation mechanism and the ceramic tube pressurizing mechanism. The fixed plate 1 is preferably made of cast iron, and the working plate 3 is preferably made of acrylic. Figure 3This is a schematic diagram of the end cap rotation mechanism and ceramic tube pressurization mechanism in the spinning pressurization device of the present invention. The end cap rotation mechanism includes an end cap rotation motor 4, an end cap rotation motor bracket 5, a bearing seat 6, pulleys 7, a conveyor belt 8, a rotating rod 9, an end cap clamp 10, and a conical end cap 11. The end cap rotation motor 4 is fixed on the end cap rotation motor bracket 5. A tensioning wheel is provided between the two pulleys 7. The conveyor belt 8 is located outside the two pulleys 7 and the tensioning wheel. The two bearing seats 6 are each provided with three holes, in which bearings are embedded for fixing and supporting the rotation of the pulleys 7, the tensioning wheel, and the rotating rod 9. The end cap clamp 10 is fixed to the end of the rotating rod 9 by bolts. The conical end cap 11 (the end cap is T-shaped with a conical angle) is clamped on the end cap clamp 10. The closed inner diameter of the end cap clamp 10 is smaller than the outer diameter of the conical angle portion of the conical end cap 11. Powered by a rotary motor 4, the conical end cap 11 is rotated via a conveyor belt 8 and a pulley 7. The conical end cap 11 is then fixed in place by a rotating rod 9 and an end cap clamp 10, thus completing the rotation function of the conical end cap 11. The ceramic tube pressurization mechanism includes a ceramic tube pressurization motor 12, a ceramic tube pressurization motor bracket 13, a gear 14, a rack and pinion guide 15, a ceramic tube fixing component 16, and a ceramic tube 17. The ceramic tube 17 is a cylinder with a tapered inner wall. The ceramic tube pressurization motor 12 is fixed to the ceramic tube pressurization motor bracket 13 and is connected via the gear 14, rack and pinion guide 15, and ceramic tube fixing component 16. Gear 14 is disc-shaped with a hole in the center. Gear 14 is fixed to the bearing of ceramic tube pressurizing motor 12 through the hole. A rack is located inside rack guide 15, and gear 14 engages with the rack of rack guide 15. A groove is located inside ceramic tube fixing component 16, and one end of ceramic tube 17 is fixed inside the groove. Ceramic tube 17 and ceramic tube fixing component 16 are coaxial to prevent breakage of ceramic tube fixing component 16 due to uneven pressurization. Ceramic tube pressurizing motor 12 propels rack guide 15 through gear 14, converting the torque of pressurizing motor 12 into force, thereby pushing ceramic tube 17 forward to achieve its pressurizing function. End cap rotation mechanism and ceramic tube pressurizing mechanism connect conical end cap 11 to ceramic tube 17, resulting in ceramic tube 17 with a conical inner wall structure and a ceramic tube to be processed covered with conical end cap 11. The ceramic tube to be processed is a cylindrical SiC ceramic tube with a conical inner wall structure.

[0024] Figure 4 This is a schematic diagram of the end cap clamp in the spinning and pressurizing device of the present invention. Figure 4As shown, the end cap clamp 10 includes a U-nut 18, end cap clamping pieces 19, clamping piece connecting shaft 20, bolt rotating shaft 21, and bolt 22. The end cap clamping pieces 19 are Ω-shaped, with holes at both ends. The clamping piece connecting shaft 20 is connected to the shaft of the two end cap clamping pieces 19 through one of the holes, allowing the two end cap clamping pieces 19 to rotate freely. One end of the bolt 22 is fixed in the end cap clamping piece 19 via the bolt rotating shaft 21, and the U-nut 18 is mounted on the other end of the bolt 22, allowing the bolt 22 to rotate with the end cap clamping piece 19. The closed inner diameter of the end cap clamp 10 is smaller than the outer diameter of the cone angle portion of the conical end cap 11. After the bolt 22 rotates out around the bolt rotating shaft 21, the end cap clamping pieces 19 can be opened and closed, and the end cap can be clamped. After the bolt 22 rotates in around the bolt rotating shaft 21, the end cap clamp 10 can clamp the end cap via the rotating shaft and U-nut 18.

[0025] Application Example 1 This application example applies the spinning and pressurizing device of Example 1 for connecting tapered SiC ceramic tubes to NITE phases to a tapered SiC ceramic tube with a sintering aid system of YA.

[0026] 1. According to the mass ratio Using anhydrous ethanol as a solution, a mixed powder was obtained through ball milling, distillation, and drying. The mixed powder, at a mass ratio of 1:5, was then mixed with anhydrous ethanol to prepare a sintering aid. 2. Spray the sintering aid onto the connecting surfaces of the conical end plug 11 and the ceramic tube 17 with a conical inner wall, and apply 200-300N of pre-pressure to temporarily bond them together; 3. Turn on the spinning pressurization device and fix the temporarily adhered conical end plug 11 and one end of the ceramic tube 17 with a conical structure on the inner wall into the ceramic tube fixing member 16. Use the end plug clamp 10 to clamp the conical end plug 11, while ensuring that the ceramic tube 17 and the ceramic tube fixing member 16 are coaxial, to avoid the ceramic tube fixing member breaking due to uneven pressurization. 4. Align the end plug clamp 10 with the bolt hole on the rotating rod 9, and tighten the bolt to fix it to the rotating rod 9; 5. The rotation speed of the conical end cap 11 is set to 1 r / min, the pressurization rate of the ceramic tube 17 is set to 100 N / min, the heating device used in conjunction with the spinning and pressurizing device has a heating and cooling rate of 100℃ / min, a holding time of 10 min, a connection temperature of 1800℃, and an argon atmosphere. The motors of the end cap rotation mechanism and the ceramic tube pressurization mechanism are started to connect, and a SiC ceramic tube with a conical structure on the inner wall is obtained.

[0027] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations and simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE phase, characterized in that, The spinning pressurizing device includes a base, an end cap rotating mechanism, and a ceramic tube pressurizing mechanism; both the end cap rotating mechanism and the ceramic tube pressurizing mechanism are installed inside the base; the end cap rotating mechanism includes an end cap rotating motor (4), a rotating rod (9), an end cap clamp (10), and a conical end cap (11); the conical end cap (11) is clamped on the end cap clamp (10), and the end cap clamp (10) is fixed to the end of the rotating rod (9) by bolts; the rotating rod (9) completes the rotation of the conical end cap (11) through the end cap rotating motor (4); The ceramic tube pressurizing mechanism includes a ceramic tube pressurizing motor (12), a gear (14), a ceramic tube fixing component (16), and a ceramic tube (17). One end of the ceramic tube (17) is fixed inside the ceramic tube fixing component (16). The ceramic tube pressurizing motor (12) converts torque into force through the gear (14) to push the ceramic tube (17) forward to achieve pressurization. The end cap rotating mechanism and the ceramic tube pressurizing mechanism are connected by simultaneously clamping the conical end cap (11) and the ceramic tube (17) and pushing them forward to obtain the ceramic tube to be processed.

2. The spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE phases according to claim 1, characterized in that, The base consists of a fixed plate (1), an aluminum profile (2) and a working plate (3). The aluminum profile (2) is located on the fixed plate (1), and the working plate (3) is located inside the aluminum profile (2). The end cover rotation mechanism and the ceramic tube pressurization mechanism are both installed on the working plate (3).

3. The spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE phases according to claim 2, characterized in that, The fixing plate (1) is made of cast iron, and the working plate (3) is made of acrylic.

4. The spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE phases according to claim 1, characterized in that, The end cap rotation mechanism also includes an end cap rotation motor bracket (5), two bearing seats (6), two pulleys (7) and a conveyor belt (8). The end cap rotation motor (4) is fixed on the end cap rotation motor bracket (5). A tensioning wheel is provided between the two pulleys (7). The conveyor belt (8) is located outside the two pulleys (7) and the tensioning wheel. The two bearing seats (6) are provided with three holes respectively. The holes are embedded with bearings for fixing and supporting the rotation of the pulleys (7), the tensioning wheel and the rotating rod (9). The bearing of the end cap rotation motor (4) drives one pulley (7). The other pulley (7) is fixed on the rotating rod (9) by a key and a keyway. The conveyor belt (8) drives the rotation of the other pulley (7) and the tensioning wheel. The key connection realizes circumferential positioning and drives the rotating rod (9) to rotate. The rotating rod (9) and the end cap clamp (10) fix the conical end cap (11), thereby completing the rotation function of the conical end cap (11).

5. The spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE phases according to claim 1, characterized in that, The conical end cap (11) is T-shaped with a conical angle, and the closed inner diameter of the end plug clamp (10) is smaller than the outer diameter of the conical angle portion of the conical end plug (11).

6. The spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE phases according to claim 1, characterized in that, The ceramic tube pressurizing mechanism also includes a ceramic tube pressurizing motor bracket (13) and a rack guide rail (15). The ceramic tube pressurizing motor (12) is fixed on the ceramic tube pressurizing motor bracket (13). The rack guide rail (15) has a rack inside. The gear (14) is mounted on the rack guide rail (15) through the rack. The ceramic tube pressurizing motor (12) pushes the ceramic tube (17) forward through the gear (14) and the rack guide rail (15), converting the torque of the pressurizing motor (12) into force for pressurization. The ceramic tube fixing part (16) is fixed to the rack by welding. The ceramic tube fixing part (16) has a groove inside. One end of the ceramic tube (17) is fixed in the groove.

7. The spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE phases according to claim 1, characterized in that, The ceramic tube (17) is a cylindrical shape with a conical angle on the inner wall, and the ceramic tube to be processed is a conical end cap (11) and a ceramic tube (17).

8. The spinning and pressurizing device for connecting tapered SiC ceramic tubes to NITE phases according to claim 1, characterized in that, The end cap clamp (10) includes a U-shaped nut (18), two end cap clamps (19), a clamp connecting shaft (20), a bolt rotating shaft (21), and a bolt (22). The end cap clamp (19) is Ω-shaped and has holes at both ends. The clamp connecting shaft (20) is connected to the two end cap clamps (19) through one hole. One end of the bolt (22) is fixed in the end cap clamp (19) through the bolt rotating shaft (21). The U-shaped nut (18) is screwed onto the other end of the bolt (22) so that the bolt (22) and the end cap clamp (19) can rotate. After the bolt (22) rotates out around the bolt rotating shaft (21), the end cap clamp (19) can be opened and closed and the end cap can be clamped. After the bolt (22) rotates in around the bolt rotating shaft (21), the end cap clamp (10) can clamp the conical end cap (11) through the rotating shaft U-shaped nut (18).

9. The spinning pressurizing device according to any one of claims 1-8 is used in the field of NITE phase connection of tapered SiC ceramic tubes.

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