High-strength cold forming composite sealing head for single crystal furnace

Abstract

The utility model belongs to the field of single crystal furnace manufacturing, particularly relates to a high-strength cold forming composite end socket for a single crystal furnace, and aims to solve the problems that the conventional end socket for the single crystal furnace is difficult to simultaneously meet the requirements of high temperature resistance, high pressure resistance and mechanical strength, a furnace body and the end socket are inconvenient to align when the end socket is mounted, and the cost is high. In order to solve the problem that the welding position of the end socket is not accurate due to the fact that the welding position of the end socket is not accurate, the utility model provides the following scheme that the end socket comprises an end socket body, a plurality of connecting lugs which are uniformly distributed are welded on the circumference of the end socket body, and chamfers are arranged on the sides, close to the end socket body, of the connecting lugs. The sealing head body is made of various materials and used for installing and positioning the sealing head body, so that the sealing head body is more convenient and faster to install, the sealing head body not only has excellent high-temperature resistance and corrosion resistance, but also has the characteristics of high strength, high toughness, wear resistance and oxidation resistance, the service life of the sealing head is greatly prolonged, and the safety of the sealing head is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal furnace manufacturing, in particular to a cold-formed composite head for a high-strength single crystal furnace. Background Art

[0002] A single crystal furnace uses a graphite heater to melt polycrystalline materials such as polysilicon in an inert gas environment (such as nitrogen and helium) and grow dislocation-free single crystals through the Czochralski method. Its operating principle is based on the melting and recrystallization process. Polycrystalline or polycrystalline powder material is placed in the furnace and heated to melt. Then, a temperature gradient within the furnace gradually causes the melted material to solidify, forming a single crystal. As a crucial component of the single crystal furnace, the performance of the head directly impacts the furnace's sealing, thermal stability, and service life.

[0003] Traditional single crystal furnace heads are mostly made of a single material, which makes it difficult to simultaneously meet the requirements of good high temperature resistance, high pressure resistance and mechanical strength. When installing the head, it is inconvenient to align the furnace body and the head, which may lead to inaccurate head welding position. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art that it is difficult to simultaneously meet the requirements of good high temperature resistance, high pressure resistance and mechanical strength, and that it is inconvenient to align the furnace body and the head during installation, which may lead to inaccurate welding position of the head. A high-strength cold-formed composite head for single crystal furnaces is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A cold-formed composite head for a high-strength single crystal furnace comprises a head body, a plurality of evenly distributed connecting ears welded to the circumference of the head body, and a chamfer is provided on one side of the connecting ears close to the head body;

[0007] A connecting ring is welded to the inner circumferential wall of the head body, and a plurality of evenly distributed connecting pieces are fixedly connected to the bottom of the connecting ring;

[0008] The plurality of connecting ears and the plurality of connecting pieces cooperate with each other to be used for installation and positioning of the head body;

[0009] The head body comprises an inner layer, a middle layer and an outer layer. The inner layer is made of boride in ceramic material, the middle layer is made of ZDP-189 metal material, and the outer layer is made of chromium carbide composite material.

[0010] In a possible design, a mounting hole is provided on the upper surface of the head body, a connecting pipe is installed in the mounting hole, and one end of the connecting pipe is fixedly connected to a flange.

[0011] In a possible design, a plurality of evenly distributed reinforcing ribs are fixedly connected to the interior of the head body, and the plurality of reinforcing ribs are all fixedly connected to the connecting pipe.

[0012] In a possible design, a gap is provided between two adjacent connecting pieces.

[0013] In a possible design, the top of the head body is fixedly connected with two symmetrically arranged lifting ears.

[0014] In a possible design, a knock ring is fixedly connected to the upper surface of the head body.

[0015] In the present application, when in use, a plurality of evenly distributed connecting ears are welded on the circumference of the head body, and the connecting ears are chamfered on the side close to the head body. A connecting ring is welded on the inner wall of the circumference of the head body, and a plurality of evenly distributed connecting pieces are fixed on the bottom of the connecting ring. These connecting ears and connecting pieces cooperate with each other to be used for the installation and positioning of the head body, making the installation of the head body more convenient and quick;

[0016] The head body is manufactured by cold forming process. It consists of three layers: inner layer, middle layer and outer layer. The multiple materials make the head body not only have excellent high temperature resistance and corrosion resistance, but also have high strength, high toughness, wear resistance and oxidation resistance, which greatly improves the service life and safety of the head.

[0017] The reinforcement ribs are arranged inside the head body, which not only enhances the structural strength of the head body, but also is fixedly connected to the connecting pipe, further improving the stability of the connection. Beneficial effects

[0018] In the utility model, the cold-formed composite head for a high-strength single crystal furnace is provided with connecting ears and connecting pieces, which cooperate with each other to be used for installation and positioning of the head body, making the installation of the head body more convenient and quick;

[0019] In the utility model, the high-strength single crystal furnace cold-formed composite head, through the arrangement of the inner layer, the middle layer and the outer layer, the multiple materials make the head body not only have excellent high temperature resistance and corrosion resistance, but also have high strength, high toughness, wear resistance and oxidation resistance, which greatly improves the service life and safety of the head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of a cold-formed composite head for a high-strength single crystal furnace proposed in the present invention;

[0021] Figure 2This is a schematic diagram of a side view and partial cross-section of a cold-formed composite head for a high-strength single crystal furnace proposed in the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of a cold-formed composite head for a high-strength single crystal furnace proposed in the present invention;

[0023] Figure 4 This is a schematic diagram of the main cross-sectional structure of a cold-formed composite head for a high-strength single crystal furnace proposed in the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of a head body of a cold-formed composite head for a high-strength single crystal furnace proposed in the utility model.

[0025] In the figure: 1. Head body; 2. Connecting pipe; 3. Flange; 4. Lifting ear; 5. Knocking ring; 6. Connecting ear; 7. Mounting hole; 8. Chamfer; 9. Connecting piece; 10. Reinforcement rib; 11. Connecting ring; 12. Gap; 13. Inner layer; 14. Middle layer; 15. Outer layer. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0027] Reference Figure 1-Figure 5 The cold-formed composite head includes: a head body 1, which is manufactured using a cold-forming process. The head body 1 includes a three-layer structure: an inner layer 13, an intermediate layer 14, and an outer layer 15. The inner layer 13 is made of boride in ceramic materials and has the characteristics of high temperature resistance and corrosion resistance. The intermediate layer 14 is made of ZDP-189 metal material and has the characteristics of high strength and high toughness. The outer layer 15 is made of chromium carbide composite material and has the characteristics of wear resistance and oxidation resistance. This three-layer structure design makes the head body 1 not only have excellent high temperature resistance and corrosion resistance, but also have high strength, high toughness, wear resistance, and oxidation resistance, greatly improving the service life and safety of the head.

[0028] A plurality of evenly distributed connecting ears 6 are welded on the circumference of the head body 1. The connecting ears 6 are each provided with a chamfer 8 on the side close to the head body 1 to facilitate connection with the furnace body. A connecting ring 11 is welded to the inner wall of the circumference of the head body 1. The bottom of the connecting ring 11 is fixedly connected to a plurality of evenly distributed connecting pieces 9. These connecting ears 6 and connecting pieces 9 cooperate with each other to install and position the head body 1, making the installation of the head body 1 more convenient and quick.

[0029] A gap 12 is provided between two adjacent connecting pieces 9. This design not only ensures the stability of the connecting pieces 9 but also avoids stress concentration caused by thermal expansion.

[0030] The present application can be used in the field of high-strength single crystal furnaces, and can also be used in other fields applicable to the present application. Example

[0031] refer to Figure 1-Figure 5 , improved on the basis of Example 1:

[0032] The upper surface of the head body 1 is provided with a mounting hole 7, into which a connecting pipe 2 is mounted. One end of the connecting pipe 2 is fixedly connected to a flange 3, facilitating connection to other components. A plurality of evenly distributed reinforcing ribs 10 are also fixedly connected to the interior of the head body 1. These ribs 10 not only enhance the structural strength of the head body 1 but also securely connect to the connecting pipe 2, further improving the stability of the connection.

[0033] The top of the head body 1 is also fixedly connected with two symmetrically arranged lifting ears 4, which are convenient for lifting and transporting the head. The upper surface of the head body 1 is also fixedly connected with a knocking ring 5, which is convenient for positioning and knocking adjustment during the installation of the head body 1.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cold-formed composite head for a high-strength single crystal furnace, characterized in that: include: A head body (1), wherein the head body (1) is circumferentially welded with a plurality of evenly distributed connecting ears (6), and a chamfer (8) is provided on one side of the plurality of connecting ears (6) close to the head body (1); A connecting ring (11) is welded to the circumferential inner wall of the head body (1), and a plurality of evenly distributed connecting pieces (9) are fixedly connected to the bottom of the connecting ring (11); The plurality of connecting ears (6) and the plurality of connecting pieces (9) cooperate with each other to be used for installation and positioning of the head body (1); The head body (1) comprises an inner layer (13), an intermediate layer (14) and an outer layer (15); the inner layer (13) is made of boride in a ceramic material; the intermediate layer (14) is made of a ZDP-189 metal material; and the outer layer (15) is made of a chromium carbide composite material.

2. A high-strength cold-formed composite head for a single crystal furnace according to claim 1, characterized in that: The upper surface of the head body (1) is provided with a mounting hole (7), a connecting pipe (2) is installed in the mounting hole (7), and one end of the connecting pipe (2) is fixedly connected to a flange (3).

3. The cold-formed composite head for a high-strength single crystal furnace according to claim 2, characterized in that: A plurality of evenly distributed reinforcing ribs (10) are fixedly connected to the interior of the head body (1), and the plurality of reinforcing ribs (10) are all fixedly connected to the connecting pipe (2).

4. The cold-formed composite head for a high-strength single crystal furnace according to claim 1, characterized in that: A gap (12) is provided between two adjacent connecting pieces (9).

5. The cold-formed composite head for a high-strength single crystal furnace according to claim 3, characterized in that: Two symmetrically arranged lifting ears (4) are fixedly connected to the top of the head body (1).

6. The cold-formed composite head for a high-strength single crystal furnace according to claim 5, characterized in that: A knocking ring (5) is fixedly connected to the upper surface of the head body (1).

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