CN211926498U - Alumina ceramics high temperature annealing tool - Google Patents
Alumina ceramics high temperature annealing tool Download PDFInfo
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- CN211926498U CN211926498U CN201922358107.4U CN201922358107U CN211926498U CN 211926498 U CN211926498 U CN 211926498U CN 201922358107 U CN201922358107 U CN 201922358107U CN 211926498 U CN211926498 U CN 211926498U
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Abstract
The utility model discloses an alumina ceramics high temperature annealing tool, the drill press comprises a base station, the base station upper surface is provided with product bearing tray, be provided with the clearance between product bearing tray and the base station, product bearing tray contour line is corresponding to the setting of alumina ceramics contour line, the base station upper surface still is provided with the locating part, the locating part sets up along product bearing tray contour line, locating part perpendicular to base station setting. The alumina ceramic product is fixedly limited by the product bearing tray and the limiting part at the outer side of the product bearing tray, so that the shrinkage and deformation of the product in the high-temperature annealing process can be effectively controlled; meanwhile, the aluminum oxide ceramic product is erected away from the base platform through the support columns matched with the product bearing tray, so that the aluminum oxide ceramic product is heated and uniformly radiated on each surface in the high-temperature annealing process, and the occurrence of the condition that cracks are generated on the surface of the product is effectively reduced.
Description
Technical Field
The utility model belongs to the technical field of ceramic manufacture technique and specifically relates to an alumina ceramics high temperature annealing tool is related to.
Background
The alumina ceramic is a ceramic material with alpha- Al2O3 as main crystal. The composite material has the characteristics of high strength, high wear resistance, high insulation and corrosion resistance, and is widely applied to the fields of semiconductors, LEDs, medical treatment, new energy, aerospace and the like.
In the process of manufacturing alumina ceramics, high-temperature annealing treatment may be required according to the use requirements of products. When the annealing temperature is over 1200 deg.c, the alumina ceramic will shrink and soften, affecting the structure size and causing scrap. At present, aiming at the problems that alumina ceramics, silicon steel and the like are easy to shrink, soften and deform and crack on the surface in the temperature change process, the yield is reduced mainly by changing the process flow, for example, the 'annealing method of the ceramic rear cover' disclosed in Chinese patent literature has the publication number 'CN 107698278A', and comprises the following steps: placing the ceramic rear cover into an annealing furnace, heating to a middle-temperature area of 600-800 ℃, and preserving heat for 1-2 hours; after the heat preservation in the middle temperature area, heating to a high temperature area of 1000-1200 ℃, and preserving the heat in the high temperature area for 3-4 hours; after the high-temperature heat preservation is finished, cooling to 800-900 ℃, and controlling the time to be 1-2 hours; naturally cooling to room temperature, and discharging to finish annealing. The method adopts the gradient heating and cooling process, and the ceramic rear cover is kept for a certain time in two temperature areas through two times of heating and cooling, so that the aim of reducing the internal stress of the ceramic rear cover is achieved, but the method still cannot completely avoid the problems that alumina ceramics, silicon steel and the like are easy to shrink, soften and deform in the temperature change process and the like.
Disclosure of Invention
To among the prior art alumina ceramics, silicon steel etc. appear the shrink easily in the temperature variation process, soften the problem of deformation and surperficial crackle, the utility model provides an alumina ceramics high temperature annealing tool, through the product bearing tray that sets up rather than the contour line coincidence in alumina ceramics bottom to cooperation product bearing tray outside locating part carries out fixed spacing to alumina ceramics, makes the utility model discloses the shrink deformation problem of tool effective control annealing in-process product reduces because of being heated, the uneven surface crack problem that leads to of heat dissipation through the clearance between product bearing tray and the base station, has guaranteed that product final structure size accords with the design drawing requirement.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an alumina ceramics high temperature annealing tool, includes the base station, the base station upper surface is provided with the product and holds the tray, be provided with the clearance between product and hold the tray and the base station, product holds the tray contour line and corresponds to the setting of alumina ceramics contour line, the base station upper surface still is provided with the locating part, the locating part holds the tray contour line setting along the product, locating part perpendicular to base station setting. The product bearing tray is used for assisting the alumina ceramic product to be separated from the base station, so that the alumina ceramic product is uniformly heated and radiated on each surface in the high-temperature annealing process, and the condition that cracks are generated on the surface due to nonuniform temperature in the high-temperature annealing process is avoided; the limiting pieces are distributed along the contour lines of the product bearing tray, so that the product bearing tray and the alumina ceramic product body can be completely clamped and fixed in the high-temperature annealing process, and the shrinkage deformation of the alumina ceramic product possibly occurring in the high-temperature annealing process is effectively limited.
Preferably, a support column is arranged between the product bearing tray and the base platform, and the support column is detachably connected with the product bearing tray. The support column is used for erecting the product bearing tray and the alumina ceramic product to separate from the base station, and the influence of the temperature of the base station on the alumina ceramic product is reduced.
Preferably, the support columns are of a double-layer structure, the bottom layers of the support columns are of single-column structures and are connected with the base platform, the top layers of the support columns are of multi-column structures and are connected with the product bearing tray, and vertexes of the top layers of the support columns are arranged in the same horizontal plane. The single-column structure at the bottom layer of the supporting column can improve the stability of the product bearing tray after being erected; the multi-column structure on the top layer of the support column is used for reducing the contact area between the support column and the product tray, and further reducing the influence of the temperature of the base station on the alumina ceramic product; the top points of the top layers of the support columns are arranged in the same horizontal plane to ensure the excellent flatness of the product bearing tray, and the flatness of the annealed alumina ceramic product is ensured.
Preferably, a plug board is arranged between the supporting column and the base platform, a mounting groove is formed in the plug board, and the supporting column is in interference connection with the mounting groove. The plugboard has ensured the stability of support column under the condition of not destroying base station surface structure, the support column is connected with the mounting groove interference, further improves in the high temperature annealing process the utility model discloses the stability of tool.
Preferably, one side of the limiting part, which is close to the product bearing tray, is of an arc surface structure, and the arc surface structure is attached to the aluminum oxide ceramic product. The cambered surface structure laminating alumina ceramics product sets up and forms the face contact, can ensure that alumina ceramics product can not produce stress concentration when contacting with the locating part in the high temperature annealing process, and then has improved the surface effect of annealing back alumina ceramics product.
Preferably, the product bearing tray is of a sheet structure, and the product bearing tray is a molybdenum alloy part. The molybdenum alloy still has higher strength at high temperature (1200-1650 ℃), can realize the purpose of supporting the alumina ceramic product, and simultaneously has good heat-conducting property, and can reduce the heat influence on the alumina ceramic product to the minimum by matching with the sheet structure.
Preferably, the limiting member is an alumina ceramic member. The limiting piece and the alumina ceramic product are made of the same material and have the same thermal performance in the high-temperature annealing process, the design can ensure that the limiting piece changes along with the shape change of the alumina ceramic product, and the high-precision limiting of the limiting piece on the alumina ceramic product is ensured.
Therefore, the utility model discloses following beneficial effect has: (1) the alumina ceramic product is fixedly limited by the product bearing tray and the limiting part at the outer side of the product bearing tray, so that the shrinkage and deformation of the product in the high-temperature annealing process can be effectively controlled; (2) the aluminum oxide ceramic product is lifted off the base platform through the support columns in cooperation with the product bearing tray, so that the aluminum oxide ceramic product is uniformly heated and radiated on each surface in the high-temperature annealing process, and the occurrence of cracks on the surface of the product is effectively reduced; (3) the support columns with the double-layer structure can increase the stability of the product bearing tray after being erected, and can also effectively reduce the contact area between the support columns and the product bearing tray, thereby further reducing the influence of the temperature of the base on the alumina ceramic product; (4) the bearing plate made of the molybdenum alloy product has good heat-conducting property, and can reduce the heat influence on the alumina ceramic product to the minimum by matching with the sheet structure; (5) the limiting piece and the alumina ceramic product are made of the same material, so that the high-precision limiting of the limiting piece on the alumina ceramic product is ensured; (6) simple structure, spacing effectual.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a front view of the present invention.
In the figure: 1. the device comprises a base platform, 2, a product bearing tray, 3, a limiting piece, 31, an arc surface structure, 4, a supporting column, 41, a bottom layer, 42, a top layer, 5, a plug board, 6 and an alumina ceramic product.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
As shown in fig. 1 and 2, an alumina ceramic high-temperature annealing jig comprises a base station 1, wherein a product bearing tray 2 is arranged on the upper surface of the base station 1, a gap is formed between the product bearing tray 2 and the base station 1, the outline of the product bearing tray 2 corresponds to the outline of alumina ceramic, a limiting part 3 is further arranged on the upper surface of the base station 1, the limiting part 3 is arranged along the outline of the product bearing tray 2, and the limiting part 3 is perpendicular to the base station. The product bearing tray 2 is used for assisting the alumina ceramic product 6 to be separated from the base station, so that the alumina ceramic product 6 is heated and uniformly radiated on each surface in the high-temperature annealing process, and the condition that cracks are generated on the surface due to uneven temperature in the high-temperature annealing process is avoided; the limiting pieces 3 are distributed along the contour lines of the product bearing tray 2, so that the product bearing tray 2 and the alumina ceramic product 6 body can be completely clamped and fixed in the high-temperature annealing process, and the shrinkage deformation of the alumina ceramic product 6 possibly occurring in the high-temperature annealing process is effectively limited.
As shown in fig. 2, be provided with support column 4 between product bearing tray 2 and the base station 1, adopt four support columns 4 to support product bearing tray 2 in this embodiment, support column 4 is for dismantling with product bearing tray 2 and being connected, support column 4 is bilayer structure, the bottom 41 of support column 4 is connected with base station 1 for single-column structure, the top layer 42 of bottom column support column 4 is many column structures and is connected with product bearing tray 2, and top layer 42 adopts three-column structure in this embodiment, three columns are evenly traded and are established at bottom 41 upper surface, the summit of each support column top layer 42 all sets up in same horizontal plane. The support columns 4 are used for erecting the product bearing tray 2 and the alumina ceramic product 6 to separate from the base platform 1, and influence of the temperature of the base platform 1 on the alumina ceramic product 6 is reduced. The single-column structure of the bottom layer 41 of the support column 4 can increase the stability of the product bearing tray 2 after being erected; the multi-column structure of the support column top layer 42 is used for reducing the contact area between the support column 4 and the product tray, and further reducing the influence of the temperature of the base station 1 on the alumina ceramic product 6; the top points of the top layers 42 of the support columns 4 are all arranged in the same horizontal plane to ensure the excellent flatness of the product bearing tray 2 and ensure the flatness of the annealed alumina ceramic product 6. Be provided with plugboard 5 between support column 4 and the base station 1, be provided with the mounting groove on the plugboard 5, support column 4 is connected with the mounting groove interference. The inserted board 5 has ensured the stability of support column 4 under the condition of not destroying 1 surface structure of base station, support column 4 is connected with the mounting groove interference, further improves in the high temperature annealing process the utility model discloses the stability of tool.
In this embodiment, three position limiting members 3 are adopted to limit the product bearing tray 2 and the alumina ceramic product 6 thereon, one side of the position limiting member 3 close to the product bearing tray 2 is an arc-shaped structure 31, and the arc-shaped structure 31 is attached to the alumina ceramic product 6. Cambered surface structure 31 laminating alumina ceramics product 6 sets up and forms the face contact, can ensure that alumina ceramics product 6 can not produce stress concentration when contacting with locating part 3 among the high temperature annealing process, and then has improved the surface effect of annealing back alumina ceramics product 6. The product bearing tray 2 is of a sheet structure, and the product bearing tray 2 is a molybdenum alloy part. The molybdenum alloy still has higher strength at high temperature (1200-1650 ℃), can realize the purpose of bearing the alumina ceramic product 6, and simultaneously has good heat-conducting property, and can reduce the heat influence on the alumina ceramic product 6 to the minimum by matching with the sheet structure. The limiting piece 3 is an alumina ceramic piece. The limiting piece 3 and the alumina ceramic product 6 are made of the same material, have the same thermal performance and shrinkage rate and are consistent in softening degree in the high-temperature annealing process, the design can ensure that the limiting piece 3 changes along with the shape change of the alumina ceramic product 6, and the high-precision limiting of the limiting piece 3 on the alumina ceramic product 6 is ensured.
In addition to the above embodiments, the technical features of the present invention can be re-selected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention which are not described in detail should be regarded as the specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (7)
1. The utility model provides an alumina ceramics high temperature annealing tool, includes base station (1), characterized by, base station (1) upper surface is provided with product bearing tray (2), be provided with the clearance between product bearing tray (2) and base station (1), product bearing tray (2) contour line is corresponding to the setting of alumina ceramics product contour line, base station (1) upper surface still is provided with a plurality of locating parts (3), locating part (3) set up along product bearing tray (2) contour line, locating part (3) perpendicular to base station (1) sets up.
2. The alumina ceramic high-temperature annealing fixture according to claim 1, wherein a plurality of support columns (4) are arranged between the product bearing tray (2) and the base table (1), and the support columns (4) are detachably connected with the product bearing tray (2).
3. The alumina ceramic high-temperature annealing jig as claimed in claim 2, wherein the supporting columns (4) are of a double-layer structure, the bottom layers (41) of the supporting columns (4) are of a single-column structure and are connected with the base platform (1), the top layers (42) of the supporting columns (4) are of a multi-column structure and are connected with the product bearing tray (2), and the vertexes of the top layers (42) of the supporting columns (4) are all arranged in the same horizontal plane.
4. The alumina ceramic high-temperature annealing jig according to claim 2, wherein a plug board (5) is arranged between the supporting column (4) and the base platform (1), a mounting groove is arranged on the plug board (5), and the supporting column (4) is in interference connection with the mounting groove.
5. The alumina ceramic high-temperature annealing jig according to any one of claims 1 to 4, wherein one side of the limiting member (3) close to the product bearing tray (2) is provided with an arc-shaped structure (31), and the arc-shaped structure (31) is arranged in a manner of being attached to the alumina ceramic product.
6. The alumina ceramic high-temperature annealing fixture as claimed in claim 1, wherein the product bearing tray (2) is of a sheet structure, and the product bearing tray (2) is made of molybdenum alloy.
7. The alumina ceramic high-temperature annealing fixture according to claim 1, wherein the limiting member (3) is an alumina ceramic member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922358107.4U CN211926498U (en) | 2019-12-24 | 2019-12-24 | Alumina ceramics high temperature annealing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922358107.4U CN211926498U (en) | 2019-12-24 | 2019-12-24 | Alumina ceramics high temperature annealing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211926498U true CN211926498U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922358107.4U Active CN211926498U (en) | 2019-12-24 | 2019-12-24 | Alumina ceramics high temperature annealing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211926498U (en) |
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- 2019-12-24 CN CN201922358107.4U patent/CN211926498U/en active Active
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