Sintering furnace for silicon carbide ceramic production

Abstract

The utility model discloses a sintering furnace for silicon carbide ceramic production, which belongs to the technical field of silicon carbide ceramics and comprises a furnace body, supporting legs are fixedly mounted on the lower surface of the furnace body, a placing component is arranged on the inner wall of the furnace body, and a limiting component is arranged on the inner wall of the placing component. According to the utility model, the limiting assembly is arranged, one end of the positioning pin is inserted into the positioning hole under the action of the positioning spring, so that the threaded rod is fixed, and the positioning rod can be changed according to the shape of the silicon carbide ceramic under the action of the fixing spring and the fixing ring; and the positioning rods are inserted into the silicon carbide ceramics, on one hand, the positioning effect is achieved, on the other hand, heat can be poured into the silicon carbide ceramics, sintering of the silicon carbide ceramics is accelerated, and then the sintering efficiency of the sintering furnace is improved.

Description

Technical Field

[0001] This utility model belongs to the field of silicon carbide ceramic production technology, and in particular relates to a sintering furnace for silicon carbide ceramic production. Background Technology

[0002] Silicon carbide ceramics not only possess excellent room-temperature mechanical properties, such as high flexural strength, excellent oxidation resistance, good corrosion resistance, high wear resistance, and low coefficient of friction, but also have the best high-temperature mechanical properties among known ceramic materials. In the production of silicon carbide ceramics, sintering treatment is required.

[0003] In current sintering furnaces, silicon carbide ceramics mostly remain stationary during the sintering process, which easily leads to uneven sintering. Furthermore, due to the lack of heat-conducting structures inside silicon carbide ceramics, internal sintering is prone to be slow. To address this issue, a sintering furnace for silicon carbide ceramic production is provided. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that uneven sintering is common in current sintering furnaces, which leads to slow sintering efficiency, and to propose a sintering furnace for silicon carbide ceramic production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sintering furnace for silicon carbide ceramic production, comprising a furnace body, a support leg fixedly installed on the lower surface of the furnace body, a placement component provided on the inner wall of the furnace body, and a limit component provided on the inner wall of the placement component;

[0006] The limiting component includes a mounting sleeve, on the inner wall of which a threaded rod is rotatably mounted. One end of the threaded rod extends to the lower surface of the mounting sleeve. A positioning hole is provided on the outer surface of the threaded rod. A mounting plate is fixedly mounted on the outer surface of the mounting sleeve. A positioning spring is fixedly mounted on the side wall of the mounting plate.

[0007] As a further description of the above technical solution:

[0008] A fixing plate is fixedly installed at one end of the positioning spring, and a positioning pin is fixedly installed on the side wall of the fixing plate. One end of the positioning pin passes through the interior of the positioning spring and extends to the outside of the other side wall of the mounting plate. The positioning pin is adapted to the size of the positioning hole.

[0009] As a further description of the above technical solution:

[0010] A threaded sleeve is threaded onto the outer surface of the threaded rod, and a pressure plate is fixedly installed on the side wall of the threaded sleeve.

[0011] As a further description of the above technical solution:

[0012] A fixing spring is fixedly installed on the upper surface of the pressure plate, a fixing ring is fixedly installed at one end of the fixing spring, and a positioning rod is fixedly installed on the inner wall of the fixing ring.

[0013] As a further description of the above technical solution:

[0014] One end of the positioning rod passes through the interior of the fixing spring, and the other end of the positioning rod extends to the outside of the lower surface of the pressure plate.

[0015] As a further description of the above technical solution:

[0016] The placement assembly includes a placement frame, a positioning block is fixedly installed on the outer surface of the placement frame, one end of the positioning block is slidably connected to the inner wall of the furnace body, the placement frame is located inside the furnace body, the side wall of the mounting sleeve is fixedly connected to the side wall of the placement frame, and the outer surface of the pressure plate is slidably connected to the inner wall of the placement frame.

[0017] As a further description of the above technical solution:

[0018] A support plate is fixedly installed on the side wall of the furnace body, a support block is fixedly installed on the upper surface of the support plate, a servo motor is fixedly installed on the upper surface of the support block, and a drive gear is fixedly installed on the output end of the servo motor through a drive rod.

[0019] As a further description of the above technical solution:

[0020] A rotating column is fixedly installed on the other side wall of the placement frame. One end of the rotating column extends to the outside of the furnace body. A driven gear is fixedly installed on the outer surface of the rotating column. The driven gear meshes with the driving gear. The diameter of the driven gear is larger than that of the driving gear.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] 1. In this utility model, by setting a limiting component, the threaded sleeve will drive the pressure plate to move down in the placement frame under the action of the thread, thereby fixing the silicon carbide ceramic in the placement frame. Then, under the action of the positioning spring, one end of the positioning pin will be inserted into the positioning hole, thereby fixing the threaded rod. Under the action of the fixing spring and the fixing ring, the positioning rod will change according to the shape of the silicon carbide ceramic. For some silicon carbide ceramics with grooves, one end of the positioning rod will be inserted into the groove. It can change according to the shape of the silicon carbide ceramic, thereby improving the stability of the silicon carbide ceramic in the placement frame. The positioning rod is inserted into the interior of the silicon carbide ceramic, which not only plays a positioning role, but also pours heat into the interior of the silicon carbide ceramic, accelerating the sintering of the silicon carbide ceramic, thereby improving the sintering efficiency of the sintering furnace.

[0023] 2. In this utility model, by setting up a placement component, during the operation of the furnace body, the servo motor drives the drive gear to rotate through the drive rod. As the drive gear rotates, the driven gear drives the rotating column to rotate, which in turn drives the placement frame to rotate in the furnace body under the limit of the positioning block, thereby driving the silicon carbide ceramic to rotate synchronously. Then, the silicon carbide ceramic is sintered while rotating, realizing the simultaneous sintering and rotation of silicon carbide ceramic. Compared with the traditional stationary sintering, it can make the silicon carbide ceramic sintering more uniform, thereby ensuring the sintering quality of silicon carbide ceramic. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a sintering furnace used for silicon carbide ceramic production.

[0025] Figure 2 In a sintering furnace for the production of silicon carbide ceramics Figure 1 A magnified structural diagram of point A in the middle.

[0026] Figure 3 This is a three-dimensional structural diagram of a pressure plate in a sintering furnace used for silicon carbide ceramic production.

[0027] Figure 4 This is a three-dimensional structural diagram of a sintering furnace used for silicon carbide ceramic production from another angle.

[0028] Legend:

[0029] 1. Furnace body; 2. Placement assembly; 21. Placement frame; 22. Positioning block; 23. Support plate; 24. Support block; 25. Servo motor; 26. Drive gear; 27. Rotating column; 28. Driven gear; 3. Limiting assembly; 31. Mounting sleeve; 32. Threaded rod; 33. Positioning hole; 34. Mounting plate; 35. Positioning spring; 36. Fixing plate; 37. Positioning pin; 38. Pressure plate; 39. Threaded sleeve; 310. Fixing spring; 311. Fixing ring; 312. Positioning rod. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-4This utility model provides a technical solution: a sintering furnace for silicon carbide ceramic production, including a furnace body 1, a support leg fixedly installed on the lower surface of the furnace body 1, a placement component 2 provided on the inner wall of the furnace body 1, and a limit component 3 provided on the inner wall of the placement component 2.

[0032] The limiting component 3 includes a mounting sleeve 31. A threaded rod 32 is rotatably mounted on the inner wall of the mounting sleeve 31. One end of the threaded rod 32 extends to the outer surface of the lower surface of the mounting sleeve 31. A positioning hole 33 is provided on the outer surface of the threaded rod 32. A mounting plate 34 is fixedly mounted on the outer surface of the mounting sleeve 31. A positioning spring 35 is fixedly mounted on the side wall of the mounting plate 34. A fixing plate 36 is fixedly mounted on one end of the positioning spring 35. A positioning pin 37 is fixedly mounted on the side wall of the fixing plate 36. One end of the positioning pin 37 passes through the interior of the positioning spring 35 and extends... Extending to the other side wall of the mounting plate 34, the positioning pin 37 is adapted to the size of the positioning hole 33. A threaded sleeve 39 is threadedly installed on the outer surface of the threaded rod 32. A pressure plate 38 is fixedly installed on the side wall of the threaded sleeve 39. A fixing spring 310 is fixedly installed on the upper surface of the pressure plate 38. A fixing ring 311 is fixedly installed on one end of the fixing spring 310. A positioning rod 312 is fixedly installed on the inner wall of the fixing ring 311. One end of the positioning rod 312 passes through the interior of the fixing spring 310, and the other end of the positioning rod 312 extends to the lower surface of the pressure plate 38.

[0033] The specific implementation method is as follows: the silicon carbide ceramic to be sintered is placed in the placement frame 21, one end of the positioning pin 37 is disengaged from the positioning hole 33, and then the threaded rod 32 is rotated on the inner wall of the mounting sleeve 31. Under the action of the thread, the threaded sleeve 39 will drive the pressure plate 38 to move down in the placement frame 21, thereby fixing the silicon carbide ceramic in the placement frame 21. Then, under the action of the positioning spring 35, one end of the positioning pin 37 is inserted into the positioning hole 33, thereby fixing the threaded rod 32. Under the action of the fixing spring 310 and the fixing ring 311, the positioning rod 312 will change according to the shape of the silicon carbide ceramic. For some silicon carbide ceramics with grooves, one end of the positioning rod 312 will be inserted into the groove.

[0034] The placement assembly 2 includes a placement frame 21. A positioning block 22 is fixedly installed on the outer surface of the placement frame 21. One end of the positioning block 22 is slidably connected to the inner wall of the furnace body 1. The placement frame 21 is located inside the furnace body 1. The side wall of the mounting sleeve 31 is fixedly connected to the side wall of the placement frame 21. The outer surface of the pressure plate 38 is slidably connected to the inner wall of the placement frame 21. A support plate 23 is fixedly installed on the side wall of the furnace body 1. A support block 24 is fixedly installed on the upper surface of the support plate 23. A servo motor 25 is fixedly installed on the upper surface of the support block 24. A drive gear 26 is fixedly installed on the output end of the servo motor 25 through a drive rod. A rotating column 27 is fixedly installed on the other side wall of the placement frame 21. One end of the rotating column 27 extends to the outside of the furnace body 1. A driven gear 28 is fixedly installed on the outer surface of the rotating column 27. The driven gear 28 meshes with the drive gear 26. The diameter of the driven gear 28 is larger than that of the drive gear 26.

[0035] The specific implementation method is as follows: During the operation of the furnace body 1, the servo motor 25 drives the drive gear 26 to rotate through the drive rod. As the drive gear 26 rotates, the driven gear 28 drives the rotating column 27 to rotate, which in turn drives the placement frame 21 to rotate within the furnace body 1 under the limit of the positioning block 22, thereby driving the silicon carbide ceramic to rotate synchronously, and then the silicon carbide ceramic is sintered while rotating.

[0036] Working principle: The silicon carbide ceramic to be sintered is placed in the placement frame 21. One end of the positioning pin 37 is disengaged from the positioning hole 33. Then, the threaded rod 32 is rotated on the inner wall of the mounting sleeve 31. Under the action of the thread, the threaded sleeve 39 will drive the pressure plate 38 to move downward in the placement frame 21, thereby fixing the silicon carbide ceramic in the placement frame 21. Then, under the action of the positioning spring 35, one end of the positioning pin 37 is inserted into the positioning hole 33, thereby fixing the threaded rod 32. The positioning rod 312 is fixed by the fixing spring 310 and the fixing ring 31. Under the action of 1, the shape of the silicon carbide ceramic will change. When facing some silicon carbide ceramics with grooves, one end of the positioning rod 312 will be inserted into the groove. During the operation of the furnace body 1, the servo motor 25 drives the drive gear 26 to rotate through the drive rod. As the drive gear 26 rotates, the driven gear 28 will drive the rotating column 27 to rotate, which in turn drives the placement frame 21 to rotate in the furnace body 1 under the limit of the positioning block 22, thereby driving the silicon carbide ceramic to rotate synchronously, and then the silicon carbide ceramic is sintered while rotating.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sintering furnace for silicon carbide ceramic production, comprising a furnace body (1), characterized in that: The lower surface of the furnace body (1) is fixedly installed with a support leg, and the inner wall of the furnace body (1) is provided with a placement component (2), and the inner wall of the placement component (2) is provided with a limiting component (3). The limiting component (3) includes a mounting sleeve (31), on which a threaded rod (32) is rotatably mounted. One end of the threaded rod (32) extends to the lower surface of the mounting sleeve (31), and a positioning hole (33) is provided on the outer surface of the threaded rod (32). A mounting plate (34) is fixedly mounted on the outer surface of the mounting sleeve (31), and a positioning spring (35) is fixedly mounted on the side wall of the mounting plate (34).

2. The sintering furnace for silicon carbide ceramic production according to claim 1, characterized in that, One end of the positioning spring (35) is fixedly mounted with a fixing plate (36), and a positioning pin (37) is fixedly mounted on the side wall of the fixing plate (36). One end of the positioning pin (37) passes through the interior of the positioning spring (35) and extends to the outside of the other side wall of the mounting plate (34). The positioning pin (37) is adapted to the size of the positioning hole (33).

3. A sintering furnace for silicon carbide ceramic production according to claim 2, characterized in that, The outer surface of the threaded rod (32) is threaded with a threaded sleeve (39), and a pressure plate (38) is fixedly installed on the side wall of the threaded sleeve (39).

4. A sintering furnace for silicon carbide ceramic production according to claim 3, characterized in that, A fixing spring (310) is fixedly installed on the upper surface of the pressure plate (38), and a fixing ring (311) is fixedly installed on one end of the fixing spring (310). A positioning rod (312) is fixedly installed on the inner wall of the fixing ring (311).

5. A sintering furnace for silicon carbide ceramic production according to claim 4, characterized in that, One end of the positioning rod (312) passes through the interior of the fixing spring (310), and the other end of the positioning rod (312) extends to the outside of the lower surface of the pressure plate (38).

6. A sintering furnace for silicon carbide ceramic production according to claim 5, characterized in that, The placement component (2) includes a placement frame (21), a positioning block (22) is fixedly installed on the outer surface of the placement frame (21), one end of the positioning block (22) is slidably connected to the inner wall of the furnace body (1), the placement frame (21) is located inside the furnace body (1), the side wall of the mounting sleeve (31) is fixedly connected to the side wall of the placement frame (21), and the outer surface of the pressure plate (38) is slidably connected to the inner wall of the placement frame (21).

7. A sintering furnace for silicon carbide ceramic production according to claim 6, characterized in that, A support plate (23) is fixedly installed on the side wall of the furnace body (1). A support block (24) is fixedly installed on the upper surface of the support plate (23). A servo motor (25) is fixedly installed on the upper surface of the support block (24). A drive gear (26) is fixedly installed on the output end of the servo motor (25) through a drive rod.

8. A sintering furnace for silicon carbide ceramic production according to claim 7, characterized in that, A rotating column (27) is fixedly installed on the other side wall of the placement frame (21). One end of the rotating column (27) extends to the outside of the furnace body (1). A driven gear (28) is fixedly installed on the outer surface of the rotating column (27). The driven gear (28) meshes with the driving gear (26). The diameter of the driven gear (28) is larger than that of the driving gear (26).

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