Silicon carbide sintering densification equipment

Abstract

The utility model discloses silicon carbide sintering densification equipment which comprises a base, one side of the base is fixedly connected with a forming frame, the inner side of the forming frame is provided with a forming groove, an adjusting mechanism used for adjusting the shape of silicon carbide is arranged in the forming groove, an end pipe is arranged in the forming groove, the side wall of the end pipe is provided with a communicating groove, and the communicating groove is communicated with the end pipe. The side wall of the communicating groove is sleeved with an air bag, a moving mechanism used for supplying air to the air bag is arranged on one side of the end pipe, and a driving mechanism used for driving the moving mechanism is arranged on one side of the base. The forming frame, the end pipes, the communicating grooves, the air bags, the connecting rods, the pistons and other structures are arranged, air is extruded into the air bags through the connecting rods and the pistons at the two ends, silicon carbide raw materials in the mold can be extruded and pressed through inflation of the air bags, the compactness of the raw materials is guaranteed, and then the compactness of the raw materials during sintering is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of silicon carbide sintering technology, and in particular to a silicon carbide sintering densification device. Background Technology

[0002] Reaction-sintered silicon carbide ceramics are a type of craft made by pressing fine-particle α-SiC and additives into a green body, which is then brought into contact with liquid silicon at high temperature. The carbon in the green body reacts with the incorporated Si to generate β-SiC, which combines with α-SiC. Free silicon fills the pores, resulting in a highly dense ceramic material.

[0003] Before production, silicon carbide raw materials need to be shaped. The shaping process requires the use of shaping molds. Existing molds cannot compress the raw materials during use, which leads to the problem of low sintering density of silicon carbide during sintering. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a silicon carbide sintering densification device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A silicon carbide sintering densification device includes a base, a forming frame fixedly connected to one side of the base, a forming groove provided on the inner side of the forming frame, an adjustment mechanism for adjusting the shape of silicon carbide provided in the forming groove, an end tube provided in the forming groove, a connecting groove provided on the side wall of the end tube, an air bladder sleeved on the side wall of the connecting groove, a moving mechanism for supplying air to the air bladder provided on one side of the end tube, and a driving mechanism for driving the moving mechanism provided on one side of the base.

[0007] Preferably, the adjustment mechanism includes a combination frame slidably connected in the forming groove, the combination frame slidingly engaging with the forming groove, the combination frame having a cylindrical groove, and the end tube extending into the cylindrical groove.

[0008] Preferably, the moving mechanism includes a connecting rod that passes through the sliding connecting end tube, one end of which is fixedly connected to a piston, and the piston is slidably connected inside the end tube.

[0009] Preferably, the drive mechanism includes a pusher frame fixedly connected to one side of the connecting rod, and a threaded rod is threadedly connected to one side of the pusher frame, with one end of the threaded rod rotatably connected to the base.

[0010] Preferably, the connecting groove is circumferentially arranged on the side wall of the end tube, and the connecting groove connects to the airbag.

[0011] Preferably, two symmetrically arranged guide frames are fixedly connected to both sides of the base, and the guide frames slide through and connect to the pusher frame.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. This utility model is equipped with a molding frame, end tubes, connecting grooves, air bladders, connecting rods, and pistons. Air is squeezed into the air bladders by the connecting rods and pistons at both ends. By inflating the air bladders, the silicon carbide raw materials in the mold can be squeezed and compacted to ensure the density of the raw materials, thereby ensuring the compactness of the raw materials during sintering.

[0014] 2. This utility model is provided with a molding frame, molding groove, combination frame and cylindrical groove and other structures. Through the sliding combination of molding groove and combination frame, the shape of silicon carbide can be easily changed when the shape is determined. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a silicon carbide sintering densification device proposed in this utility model;

[0016] Figure 2 This is a side view of a silicon carbide sintering densification device proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the connecting rod connection structure of a silicon carbide sintering densification device proposed in this utility model.

[0018] In the diagram: 1. Base, 2. Molding frame, 3. Molding groove, 4. Combination frame, 5. Guide frame, 6. Push frame, 7. Connecting rod, 8. Connecting groove, 9. End tube, 10. Airbag, 11. Piston, 12. Cylindrical groove, 13. Threaded rod. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] Reference Figure 1-3A silicon carbide sintering densification device includes a base 1, a molding frame 2 fixedly connected to one side of the base 1, a molding groove 3 provided on the inner side of the molding frame 2, an adjustment mechanism for adjusting the shape of silicon carbide provided in the molding groove 3, the adjustment mechanism includes a combination frame 4 slidably connected in the molding groove 3, the combination frame 4 slidably cooperates with the molding groove 3, a cylindrical groove 12 is opened in the combination frame 4, and an end tube 9 extends into the cylindrical groove 12.

[0021] The molding groove 3 is provided with an end tube 9, and the side wall of the end tube 9 is provided with a connecting groove 8. The connecting groove 8 is circumferentially arranged on the side wall of the end tube 9 and connects to the airbag 10. The side wall of the connecting groove 8 is fitted with the airbag 10. One side of the end tube 9 is provided with a moving mechanism for supplying air to the airbag 10. The moving mechanism includes a connecting rod 7 that slides through and connects to the end tube 9. One end of the connecting rod 7 is fixedly connected to a piston 11, and the piston 11 is slidably connected inside the end tube 9.

[0022] One side of the base 1 is provided with a drive mechanism for driving the moving mechanism. The drive mechanism includes a pusher 6 fixedly connected to one side of the connecting rod 7. Two symmetrically arranged guide frames 5 are fixedly connected to both sides of the base 1. The guide frames 5 slide through and connect to the pusher 6. One side of the pusher 6 is threadedly connected to a threaded rod 13, and one end of the threaded rod 13 is rotatably connected to the base 1.

[0023] When using this invention, the end tube 9 is first placed inside the molding frame 2. The raw material is shaped by the cooperation between the molding groove 3 inside the molding frame 2 and the end tube 9. The raw material is then filled into the molding groove 3. Then, the threaded rods 13 on both sides are rotated. Under the sliding guidance of the guide frame 5, the pusher frame 6 can be moved. The pusher frame 6 moves the connecting rod 7 and the piston 11 inside the end tube 9. The piston 11 compresses the air inside the end tube 9 and compresses the air into the airbag 10 through the connecting groove 8. The air inflates the airbag 10 and the airbag 10 can contact and compress the raw material inside the molding groove 3. Through the contact of the pusher frame 6, the raw material inside the molding groove 3 can be compressed and pressed, thereby ensuring the compactness of the raw material during the molding process. When the silicon carbide shape needs to be changed, the combination frame 4 is slidably connected inside the molding groove 3. By assembling the molding groove 3 and the combination frame 4, the cylindrical groove 12 can be used as the molding groove structure.

[0024] 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 silicon carbide sintering densification device, comprising a base (1), characterized in that, A molding frame (2) is fixedly connected to one side of the base (1). A molding groove (3) is provided on the inner side of the molding frame (2). An adjustment mechanism for adjusting the shape of silicon carbide is provided in the molding groove (3). An end tube (9) is provided in the molding groove (3). A connecting groove (8) is provided on the side wall of the end tube (9). An airbag (10) is sleeved on the side wall of the connecting groove (8). A moving mechanism for supplying air to the airbag (10) is provided on one side of the end tube (9). A driving mechanism for driving the moving mechanism is provided on one side of the base (1).

2. The silicon carbide sintering densification equipment according to claim 1, characterized in that, The adjustment mechanism includes a combination frame (4) that is slidably connected in the forming groove (3). The combination frame (4) is slidably engaged with the forming groove (3). A cylindrical groove (12) is provided in the combination frame (4). The end tube (9) extends into the cylindrical groove (12).

3. The silicon carbide sintering densification equipment according to claim 2, characterized in that, The moving mechanism includes a connecting rod (7) that passes through the sliding connecting end tube (9), and a piston (11) is fixedly connected to one end of the connecting rod (7). The piston (11) is slidably connected inside the end tube (9).

4. The silicon carbide sintering densification equipment according to claim 3, characterized in that, The drive mechanism includes a pusher frame (6) fixedly connected to one side of the connecting rod (7), and a threaded rod (13) is threadedly connected to one side of the pusher frame (6), and one end of the threaded rod (13) is rotatably connected to the base (1).

5. The silicon carbide sintering densification equipment according to claim 4, characterized in that, The connecting groove (8) is circumferentially arranged on the side wall of the end tube (9), and the connecting groove (8) connects to the airbag (10).

6. The silicon carbide sintering densification equipment according to claim 5, characterized in that, Two symmetrically arranged guide frames (5) are fixedly connected to both sides of the base (1), and the guide frames (5) slide through the pusher frame (6).

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