A crucible

Abstract

The utility model relates to the field of metal processing, especially relates to a crucible, including body and be used for the cushion block of heat insulation, the body is configured to the slot -like of top opening, the cushion block is connected to the bottom surface of body, the cushion block has the contact surface close to the body and the support surface opposite with the contact surface, and the support surface of cushion block is at least partially supported in the working surface. Through the installation cushion block to the bottom surface of body, under the heat insulation effect of cushion block, guarantee when cooling, the body will not directly contact with the working surface of lower temperature directly, thereby reduce the risk of the body and break because of local temperature sudden drop, thereby improve the security of operation.

Description

Technical Field

[0001] This utility model relates to the field of metal processing, and in particular to a crucible. Background Technology

[0002] When depositing a metal film onto a substrate surface, a boron nitride-based crucible is used to hold the metal powder, which is then added to the copper tube water jacket of the coating machine. The metal powder evaporates under vacuum and is transferred to the substrate surface for coating. After heating is stopped, the crucible and the remaining metal material are cooled by the copper tube water jacket. Because boron nitride is a brittle material, it is very easy for it to break when in direct contact with the cooler inner wall of the copper tube water jacket at high temperatures, which could pose a safety hazard. Utility Model Content

[0003] The purpose of this invention is to provide a crucible that prevents cracking during the cooling process.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A crucible includes a body and a heat-insulating pad, the body being configured as a groove with an open top, the pad being connected to the bottom surface of the body, the pad having a contact surface close to the body and a support surface opposite the contact surface, the support surface of the pad being at least partially supported on a working surface.

[0006] Optionally, the thickness of the pad is any value between 0.5 mm and 1.5 mm.

[0007] Optionally, the material of the pad includes graphite and / or aluminum oxide.

[0008] Optionally, the bottom of the body is formed with a mounting groove embedded in the body, and the contact surface of the pad is formed with a protruding snap-fit ​​portion, the structure of which is matched with the mounting groove for detachable connection of the pad.

[0009] Optionally, the pad has a rough surface structure.

[0010] Optionally, the supporting surface of the body may be raised or recessed to form a curved structure.

[0011] Optionally, the sidewall of the body near its opening is inclined away from the interior, with the inclination angle being any value between 10° and 15°.

[0012] Optionally, the crucible further includes a hanging kit for protecting the side wall of the body. The hanging kit has a hanging end and a suspended end that are disposed opposite to each other. The hanging end is used to support the top of the body. When the hanging kit is hung on the outside of the body, the suspended part is separated from the working surface.

[0013] Optionally, the hanging kit is constructed as a cylindrical shape with openings at both ends, and the inner wall diameter matches the outer wall of the body. The hanging end of the hanging kit tapers towards its central axis, forming a stepped structure with an inner diameter smaller than the outer diameter of the opening of the body.

[0014] Optionally, the wall thickness of the body is any value between 2mm and 4mm, and the vertical distance between the bottom inner wall of the body and its opening is any value between 11mm and 16mm.

[0015] The beneficial effects of this utility model are as follows: by installing pads on the bottom surface of the main body, the heat insulation effect of the pads ensures that the main body will not directly contact the lower temperature working surface during cooling, thereby reducing the risk of the main body breaking due to a sudden drop in local temperature and improving the safety of operation.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic cross-sectional view of the crucible shown in Embodiment 1 of this utility model;

[0018] Figure 2 This is a side view of the crucible shown in Embodiment 2 of this utility model;

[0019] Figure 3 This is a bottom view of the crucible shown in Embodiment 3 of this utility model.

[0020] Legend: 1-body, 11-mounting groove, 2-pad, 21-contact surface, 211-snap joint, 22-support surface, 3-hanging kit, 31-hanging end, 32-suspended end, 301-guard plate, 302-horizontal plate. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] This utility model application protects a crucible, including a body 1 and a heat insulation pad 2. The body 1 is constructed as a groove with an open top. The pad 2 is connected to the bottom surface of the body 1. The pad 2 has a contact surface 21 close to the body 1 and a support surface 22 opposite to the contact surface 21. The support surface 22 of the pad 2 is at least partially supported on the working surface.

[0026] By installing pad 2 on the bottom surface of the main body 1, the heat insulation effect of the pad 2 ensures that the main body 1 will not directly contact the lower temperature working surface during cooling, thereby reducing the risk of the main body 1 breaking due to a sudden drop in local temperature. This improves the safety of operation with low cost and simple structure.

[0027] In some embodiments, the thickness of the pad 2 is any value from 0.5mm to 1.5mm, for example, any value from 0.7mm, 0.9mm, 1.1mm, 1.3mm and 1.5mm. If the pad 2 is too thin, it will not be able to achieve sufficient heat insulation effect, while if the pad 2 is too thick, it will cause the bottom of the body 1 to be too far from the working surface, which will reduce the cooling rate.

[0028] In some embodiments, the material of the pad 2 includes graphite and / or alumina, which helps to ensure that the pad 2 has high hardness, heat resistance and thermal insulation performance.

[0029] In some embodiments, a mounting groove 11 is formed at the bottom of the body 1, and a protruding snap-fit ​​portion 211 is formed on the contact surface 21 of the pad 2. The structure of the snap-fit ​​portion 211 is matched with the mounting groove 11 for detachable connection of the pad 2. Since the pad 2 is thin, the connection can be directly achieved through mechanical interference and friction between the mounting groove 11 and the snap-fit ​​portion 211. The simple structure can ensure that the pad 2 moves with the body 1.

[0030] In some embodiments, the pad 2 has a rough surface structure, which helps to reduce the contact area and increase friction.

[0031] In some embodiments, the support surface 22 of the body 1 has a raised or recessed curved structure, which helps to reduce the contact area between the pad 2 and the working surface and helps to reduce heat conduction.

[0032] In some embodiments, the sidewall of the body 1 is inclined away from the interior at one end near its opening, and the inclination cone angle is any value between 10° and 15°, for example, any value between 10°, 11°, 12°, 13°, 14° and 15°. This helps to reduce the area of ​​the bottom surface while ensuring the volume of the body 1, thereby reducing the risk of the body 1 breaking due to thermal stress concentration.

[0033] In some embodiments, the crucible further includes a hanging kit 3 for protecting the sidewalls of the main body 1. The hanging kit 3 has a hanging end 31 and a suspended end 32 disposed opposite to each other. The hanging end 31 is used to support the top of the main body 1. When the hanging kit 3 is hung on the outside of the main body 1, the suspended part is separated from the working surface. Since the sidewalls of the main body 1 are inclined outward, the diameter of the main body 1 is largest at the opening. Covering the outside of the opening of the main body 1 with the hanging kit 3 helps to ensure that the sidewalls of the main body 1 do not directly contact the inner sidewall of the copper tube water jacket, thus reducing the risk of breakage of the main body 1. Since the hanging kit 3 only covers the outside of the opening of the main body 1, it has little impact on the temperature rise and fall of the crucible.

[0034] In some embodiments, the hanging kit 3 is constructed as a cylinder with openings at both ends, and the inner wall diameter matches the outer wall of the body 1. The hanging end 31 of the hanging kit 3 tapers towards its central axis, forming a stepped structure with an inner diameter smaller than the outer diameter of the opening of the body 1. By forming a stepped structure at the hanging end 31 to achieve support, protection of the side wall of the body 1 is achieved with a simple structure.

[0035] In some embodiments, the wall thickness of the body 1 is any value from 2mm to 4mm, for example, any value from 2mm, 2.5mm, 3mm, 3.5mm, and 4mm. The vertical distance between the bottom inner wall of the body 1 and its opening is any value from 11mm to 16mm, for example, any value from 11mm, 12mm, 13mm, 14mm, 15mm, and 16mm. Excessive wall thickness of the body 1 leads to material waste, while insufficient wall thickness reduces the risk of breakage. Insufficient internal height of the body 1 also results in material waste and is not conducive to cost savings.

[0036] Please refer to the following examples for details.

[0037] Example 1:

[0038] Please see Figure 1 The crucible shown in a preferred embodiment of this application includes a body 1, a pad 2 and a hanging kit 3. It is used in a coating machine and placed inside a copper tube water jacket. Its bottom is supported on the inner wall of the bottom surface of the copper tube water jacket, i.e., the working surface.

[0039] The main body 1 is constructed of boron nitride-based material and has a circular groove-like structure with an open top. It has a wall thickness of 3 mm and a total height of 16 mm. The sidewalls of the main body 1 slope outwards from the bottom to the top, with a taper angle of 15°. The outer diameter of the top opening of the main body 1 is 39 mm, and all edges of the main body 1 are rounded. A mounting groove 11, coaxial with the main body 1, is formed at the bottom of the main body 1. The mounting groove 11 has an outer diameter of 18 mm, a width of 1 mm, and a depth of 1 mm, and is embedded in the bottom of the main body 1.

[0040] The pad 2 is annular, 5mm wide, 0.5mm thick, and has an outer diameter of 20mm. The pad 2 is made of graphite-doped alumina and has a corresponding annular contact surface 21 and a support surface 22, as well as a side surface connecting the contact surface 21 and the support surface 22. The support surface 22 of the pad 2 is concave upwards to form an arc-shaped structure, thereby reducing the contact area between the pad 2 and the working surface and reducing heat transfer. The center of the contact surface 21 of the pad 2 protrudes to form a snap-fit ​​portion 211 that fits into the mounting groove 11 of the body 1. The snap-fit ​​portion 211 is pressed into the mounting groove 11, allowing the pad 2 to be installed at the bottom of the body 1. Because the pad 2 is thin and lightweight, it can move with the body 1 under the action of friction alone. In this embodiment, the surface of the pad 2 is sandblasted and is relatively rough.

[0041] The hanging assembly 3 is a cylindrical structure open at both ends. Its inner wall diameter is 39mm or slightly larger, its thickness is 0.5mm, and its axial length is approximately 3mm. The two ends of the hanging assembly 3 are a hanging end 31 and a suspended end 32. The inner wall of the hanging end 31 extends vertically inward, forming a ring-shaped structure with an inner diameter of 36mm. The hanging assembly 3 is fitted onto the opening of the main body 1, with the hanging end 31 supported by the side wall of the opening, and the suspended end 32 hanging freely. Because the hanging assembly 3 completely covers the outer edge of the opening of the main body 1, it ensures that the main body 1 will not directly contact the inner wall of the vertical cylindrical copper pipe water jacket. Since the axial length of the hanging assembly 3 is relatively small, only covering the opening, it has little impact on the temperature rise and fall of the main body 1.

[0042] By setting up pad 2 and hanging kit 3, it is ensured that the main body 1 will not come into direct contact with the inner wall of the copper pipe water jacket, thus suppressing the problem of breakage caused by drastic temperature changes and reducing safety risks.

[0043] Example 2:

[0044] Please see Figure 2 The only difference between this embodiment and Embodiment 1 is that the axial length of the hanging kit 3 is larger in this embodiment, which is 6mm, and it is hollowed out overall. The hanging kit 3 is cylindrical in shape and includes multiple protective plates 301 extending along its axial direction and horizontal plates 302 vertically connected between adjacent protective plates 301. Since the hanging kit 3 is hollowed out overall, it has a better heat transfer effect and therefore has a smaller impact on the temperature rise and fall of the body 1.

[0045] Example 3:

[0046] Please see Figure 3 The difference between this embodiment and Embodiment 1 is that in this embodiment, four pads 2 are provided, each pad 2 is constructed as a cylinder and is evenly arranged along a circumference coaxial with the body 1. The snap-fit ​​part 211 is coaxial with the pad 2 and its diameter is half that of the pad 2, and the mounting groove 11 is fitted into the snap-fit ​​part 211. By providing multiple small pads 2, it helps to further reduce the contact area.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A crucible, characterized in that, Includes a body (1) and a pad (2) for heat insulation, the body (1) being constructed as a groove with an open top, the pad (2) being connected to the bottom surface of the body (1), the pad (2) having a contact surface (21) close to the body (1) and a support surface (22) opposite to the contact surface (21), the support surface (22) of the pad (2) being at least partially supported on the working surface.

2. The crucible as described in claim 1, characterized in that, The thickness of the pad (2) is any value between 0.5 mm and 1.5 mm.

3. The crucible as described in claim 2, characterized in that, The material of the pad (2) includes graphite and / or alumina.

4. The crucible as described in claim 3, characterized in that, The bottom of the body (1) has a mounting groove (11) embedded in the body (1), and the contact surface (21) of the pad (2) has a protruding snap-fit ​​part (211). The structure of the snap-fit ​​part (211) is matched with the mounting groove (11) for the detachable connection of the pad (2).

5. The crucible as described in claim 4, characterized in that, The pad (2) has a rough surface structure.

6. The crucible as described in claim 4, characterized in that, The supporting surface (22) of the body (1) has a raised or recessed curved structure.

7. The crucible as claimed in claim 1, characterized in that, The sidewall of the body (1) is inclined at one end near its opening in a direction away from the interior, and the angle of the inclination is any value between 10° and 15°.

8. The crucible as claimed in claim 1, characterized in that, It also includes a hanging kit (3) for protecting the side wall of the body (1). The hanging kit (3) has a hanging end (31) and a suspended end (32) arranged opposite to each other. The hanging end (31) is used to support the top of the body (1). When the hanging kit (3) is hung on the outside of the body (1), the suspended part is separated from the working surface.

9. The crucible as described in claim 8, characterized in that, The hanging kit (3) is constructed as a cylindrical shape with openings at both ends, and the inner wall diameter matches the outer wall of the body (1). The hanging end (31) of the hanging kit (3) is tapered toward its central axis, forming a stepped structure with an inner diameter smaller than the outer diameter of the opening of the body (1).

10. The crucible as claimed in claim 1, characterized in that, The wall thickness of the body (1) is any value between 2mm and 4mm, and the vertical distance between the bottom inner wall of the body (1) and its opening is any value between 11mm and 16mm.

Images