Tool for reducing internal stress of large-thickness crystal
By designing a combined structure of external and internal tooling, adjusting stress components, and using a combination of heating pipes and guide channels to uniformly fill thermally conductive materials and control the temperature gradient, stable control of the crystal's temperature gradient is achieved. This solves the problem of uneven temperature gradient and increased internal stress in existing technologies, especially in the growth of thick crystals, and avoids stress control caused by temperature fluctuations. It also solves the thermal stress problem in existing technologies, especially in the growth of thick crystals, and achieves uniform temperature gradient control, reducing internal stress.
Patent Information
- Application Number
- CN202423252643.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
During crystal growth, especially for thick crystals, thermal stress is difficult to control effectively, leading to uneven temperature gradients and increased internal stress.
A tooling system comprising an outer tooling body and an inner tooling body is designed. The inner tooling body is equipped with a stress adjustment component. Through a combination structure of heating pipe and guide groove, heat-conducting material is uniformly filled and the temperature gradient is controlled. The temperature gradient is further adjusted by combining a motor and gear system.
Effectively control the internal temperature gradient of the crystal, reduce internal stress, and avoid the problem of increased stress caused by temperature fluctuations.
Smart Images
Figure CN223752950U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crystal processing technology, and specifically to tooling for reducing internal stress in thick crystals. Background Technology
[0002] During crystal growth, especially in thick crystals, thermal stress is generated due to the presence of a temperature gradient. For example, in the Czochralski method, the crystal grows gradually from a high-temperature melt, and the surface and interior cool at different rates. The surface cools faster than the interior, resulting in a temperature difference.
[0003] During crystal growth, especially in thick crystals, thermal stress is generated due to the presence of a temperature gradient. For example, in the Czochralski method, the crystal grows gradually from a high-temperature melt, and the surface and interior cool at different rates. The surface cools faster than the interior, resulting in a temperature difference.
[0004] Some tooling solutions do not take into account the optimization of heat transfer. In the crystal growth environment, heat transfer mainly occurs through conduction, convection, and radiation. If the tooling cannot effectively regulate these heat transfer processes, the temperature gradient inside the crystal cannot be controlled, resulting in large temperature fluctuations during crystal growth and potentially increasing internal stress. Utility Model Content
[0005] In view of the above-mentioned shortcomings of the prior art, this utility model provides a tooling for reducing the internal stress of thick crystals, which can effectively solve the problems in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] This utility model provides a tooling for reducing internal stress in thick crystals, including an outer tooling body; an inner tooling body is provided inside the outer tooling body, a stress adjustment component is provided between the outer tooling body and the inner tooling body, a mounting bracket is fixedly installed on the top of the outer tooling body, an openable base plate is provided at the bottom of the inner tooling body, and a placement rack is provided inside the inner tooling body.
[0008] According to the above-mentioned tooling for reducing internal stress in thick crystals, the stress adjustment component includes a heating tube located between the outer tooling body and the inner tooling body. The heating tube is threaded and its size increases sequentially from top to bottom. The inner wall of the inner tooling body has a first guide groove and a second guide groove, which are connected to each other. The top of the inner tooling body has an injection port.
[0009] According to the tool for reducing internal stress of large-thickness crystal, the top of the inner tool body is rotationally connected with a sealing plug, and the sealing plug blocks or opens the injection port.
[0010] According to the tool for reducing internal stress of large-thickness crystal, the inner part of the inner tool body is rotationally connected with a threaded pipe, the outer side of the threaded pipe is threadedly connected with a sliding block, and the sliding block is fixedly connected with the placing frame.
[0011] According to the tool for reducing internal stress of large-thickness crystal, the top of the outer tool body is rotationally connected with a second gear, the second gear is fixedly connected with the threaded pipe, the top of the outer tool body is rotationally connected with a first gear, and the first gear is meshingly connected with the second gear.
[0012] According to the tool for reducing internal stress of large-thickness crystal, the top of the mounting frame is fixedly installed with a motor, the bottom of the mounting frame is rotationally connected with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected with the first gear.
[0013] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
[0014] The liquid heat-conducting material is injected from the injection port, enters the inside of the flow guide groove one and the flow guide groove two through the injection port, and is uniformly filled in the inside of the inner tool body, then the heating pipe is heated, and in the heating process, the heating pipe is in a threaded shape and the size increases from bottom to top, so that in the temperature transfer process of the heat-conducting material, the temperature in the inside of the inner tool body decreases from top to bottom, so that the temperature gradient in the crystal can be effectively controlled when the heat transfer is as much as possible, and the problem of increased internal stress caused by large temperature fluctuation in the leaching growth is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0016] Figure 1 It is a structural schematic view of the utility model;
[0017] Figure 2 It is a sectional view of the utility model;
[0018] Figure 3 It is a sectional view of the inner tool body of the utility modelFigure 1 ;
[0019] Figure 4 The inner tooling body of the utility model is cut open Figure 2 ;
[0020] Figure 5 The utility model discloses Figure 1 The enlarged view of A in the middle.
[0021] The figure mark: 1, outer tooling body, 2, inner tooling body, 3, mounting bracket, 12, heating pipe, 21, flow guide groove one, 22, flow guide groove two, 23, threaded pipe, 24, sliding block, 25, placing rack, 31, motor, 32, electric telescopic rod, 33, gear one, 34, gear two, 35, sealing plug. Specific implementation
[0022] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below, combining with the drawings in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor are within the protection scope of the utility model.
[0023] Below, the utility model is further described in conjunction with the embodiment.
[0024] Embodiment: refer to Figures 1 to 5 The tool for reducing the internal stress of thick crystal includes an outer tooling body 1. An inner tooling body 2 is arranged in the inner portion of the outer tooling body 1. An adjusting stress assembly is arranged between the outer tooling body 1 and the inner tooling body 2. A mounting bracket 3 is fixedly installed on the top of the outer tooling body 1. An openable bottom plate is arranged on the bottom of the inner tooling body 2. A placing rack 25 is arranged in the inner portion of the inner tooling body 2. The adjusting stress assembly can avoid the problem of excessive temperature fluctuation in the crystal.
[0025] The adjusting stress assembly includes a heating pipe 12. The heating pipe 12 is arranged between the outer tooling body 1 and the inner tooling body 2. The shape of the heating pipe 12 is arranged in a threaded shape. The size of the heating pipe 12 gradually increases from top to bottom. A flow guide groove one 21 is arranged on the inner wall of the inner tooling body 2. A flow guide groove two 22 is arranged on the inner wall of the inner tooling body 2. The flow guide groove one 21 and the flow guide groove two 22 are connected in penetration. An injection port is arranged on the top of the inner tooling body 2. The adjusting stress assembly can reduce the stress generated in the crystal growth process. A sealing plug 35 is rotatably connected to the top of the inner tooling body 2. The sealing plug 35 blocks or opens the injection port. The sealing plug 35 is convenient for adding heat-conducting materials through the sealing plug 35.
[0026] The inner tool body 2 is rotationally connected with a threaded pipe 23, the outer side of the threaded pipe 23 is threadedly connected with a sliding block 24, the sliding block 24 is fixedly connected with a placing rack 25, the height of the placing rack 25 can be adjusted through the cooperation of the threaded pipe 23 and the sliding block 24, the top of the outer tool body 1 is rotationally connected with a gear two 34, the gear two 34 is fixedly connected with the threaded pipe 23, the top of the outer tool body 1 is rotationally connected with a gear one 33, the gear one 33 is meshingly connected with the gear two 34, the gear two 34 can be driven to rotate through the meshing relationship of the gear one 33 and the gear two 34, and then the threaded pipe 23 is driven to rotate, the top of the mounting rack 3 is fixedly installed with a motor 31, the bottom of the mounting rack 3 is rotationally connected with an electric telescopic rod 32, the output end of the electric telescopic rod 32 is fixedly connected with the gear one 33, the whole device can be driven to rotate through the motor 31, so that the stability of the temperature gradient in the crystal growth process is ensured.
[0027] The working principle of the utility model is as follows: the crystal needing processing is placed in the inside of the placing rack 25, then the liquid heat conduction material is injected from the injection port, enters the inside of the flow guide groove one 21 and the flow guide groove two 22 through the injection port, so that the heat conduction material is evenly filled in the inside of the inner tool body 2, then the heating pipe 12 is heated, in the heating process, since the heating pipe 12 presents a threaded shape and the size gradually increases from bottom to top, in the process of temperature transfer of the heat conduction material, the temperature in the inside of the inner tool body 2 gradually decreases from top to bottom, so that the temperature gradient in the inside of the crystal can be effectively controlled when the heat transfer is as much as possible, the problem of the increase of internal stress caused by the large temperature fluctuation in the leaching growth is avoided, the electric telescopic rod 32 is driven to rotate through the motor 31, the gear one 33 is driven to rotate by the electric telescopic rod 32, the threaded pipe 23 is driven to rotate through the meshing relationship of the gear one 33 and the gear two 34, so that the sliding block 24 and the placing rack 25 move up and down in a straight line, and in the moving process, the temperature interval gradually increases or gradually decreases, the problem of the increase of stress caused by the large temperature fluctuation is avoided.
[0028] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model is explained in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the utility model.
Claims
1. A fixture for reducing internal stress in a large thickness crystal, characterized by, Including outer tooling body (1), the inside of outer tooling body (1) is provided with inner tooling body (2), is provided with adjusting stress subassembly between outer tooling body (1) and inner tooling body (2), the top of outer tooling body (1) is fixedly installed with mounting bracket (3), the bottom of inner tooling body (2) is provided with openable and closable bottom plate, the inside of inner tooling body (2) is provided with placing rack (25); The adjusting stress subassembly includes heating pipe (12), the heating pipe (12) is located between outer tooling body (1) and inner tooling body (2), the shape of heating pipe (12) is provided as thread, and the size of heating pipe (12) is sequentially increased from top to bottom, the inner wall of inner tooling body (2) is provided with flow guide groove one (21), the inner wall of inner tooling body (2) is provided with flow guide groove two (22), flow guide groove one (21) and flow guide groove two (22) are connected in penetration, the top of inner tooling body (2) is provided with inlet.
2. The stress reduction tooling for large thickness crystals of claim 1, wherein, The top of inner tooling body (2) is rotatably connected with sealing plug (35), sealing plug (35) blocks or opens inlet.
3. The stress reduction tooling for large thickness crystals of claim 1, wherein, The inside of inner tooling body (2) is rotatably connected with threaded pipe (23), the outer side of threaded pipe (23) is screw-connected with sliding block (24), sliding block (24) is fixedly connected with placing rack (25).
4. The stress reduction tooling for large thickness crystals of claim 3, wherein, The top of outer tooling body (1) is rotatably connected with gear two (34), gear two (34) is fixedly connected with threaded pipe (23), the top of outer tooling body (1) is rotatably connected with gear one (33), gear one (33) is meshingly connected with gear two (34).
5. The stress reduction tooling for large thickness crystals of claim 4, wherein, The top of mounting bracket (3) is fixedly installed with motor (31), the bottom of mounting bracket (3) is rotatably connected with electric telescopic rod (32), the output end of electric telescopic rod (32) is fixedly connected with gear one (33).