Graphite sagger and sintering furnace thereof
By designing the structure of the graphite cassette, an exhaust through hole is opened on the bottom plate close to the side plate, which solves the problems of large temperature difference in the cassette and unprotected product, achieving more uniform heat treatment and exhaust performance, improving product consistency and Insulation performance.
Patent Information
- Application Number
- CN202323395592.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-13
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2033-12-13
AI Technical Summary
The temperature at the opening and exhaust port of the existing cassette is much different from the temperature in other parts of the cassette, and the product at the opening and exhaust port cannot be protected and is easily directed by the heat source.
A graphite cassette bowl is designed, which includes a bottom plate and a plurality of end-to-end side plates configured on the edge of the bottom plate. An exhaust through hole is opened on the bottom plate, and the through hole is close to the side plate to form a structure with no obvious opening around to reduce the temperature difference and Protect the product.
It effectively reduces the temperature difference in the graphite cassette, improves the performance consistency of the product, enhances the insulation and exhaust performance, prevents rapid heat loss, and simplifies the preparation process, which is suitable for mass production.
Smart Images
Figure CN222352896U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of powder sintering, in particular to a graphite sagger and a sintering furnace thereof. Background Art
[0002] The existing sagger is square in shape, with exhaust ports on one side (single side) or evenly on the four sides. The temperature at the exhaust port of the existing sagger is much different from the temperature at other places in the sagger, which can reach 4°C at most, and the products at the exhaust port cannot be protected by the sagger and are easily directly exposed to the heat source. Utility Model Content
[0003] The utility model aims to provide a graphite sagger and a sintering furnace thereof, aiming to solve the technical problems that the temperature at the position of the exhaust port of the existing sagger is greatly different from the temperature of other places in the sagger and the product at the position of the exhaust port cannot be protected by the sagger and is easily directly irradiated by the heat source.
[0004] In order to solve the above problems, according to one aspect of the present application, an embodiment of the utility model provides a graphite sagger, which includes a bottom plate and a plurality of side plates connected end to end and constructed on the edge of the bottom plate, the bottom plate and the plurality of side plates are arranged to form a carrier area for mounting products, and an exhaust through hole is opened on the bottom plate, and the exhaust through hole is close to the side plate.
[0005] In some embodiments, the exhaust hole is opened at the connection between the two side panels.
[0006] In some embodiments, the bottom plate is a quadrilateral plate-shaped structure, the number of the side plates is four, the four side plates are connected end to end, and the four side plates are respectively connected to four sides of the bottom plate.
[0007] In some embodiments, the number of the exhaust through holes is four, and the four exhaust through holes are all opened on the bottom plate and are respectively located at four corners of the bottom plate.
[0008] In some embodiments, the bottom plate extends in all directions in a horizontal direction, and the side plates are arranged perpendicular to the bottom plate.
[0009] In some embodiments, two adjacent side panels are vertically arranged.
[0010] In some embodiments, the exhaust through hole is a square hole, and two adjacent side walls of the exhaust through hole are coplanar with two adjacent side plates, respectively.
[0011] According to another aspect of the present application, an embodiment of the utility model further provides a sintering furnace, which includes the graphite sagger as described above.
[0012] In some embodiments, multiple layers of the graphite saggers are provided in the sintering furnace, and the exhaust holes on two upper and lower adjacent graphite saggers are correspondingly provided.
[0013] In some embodiments, when the bottom plate is a quadrilateral plate structure, the four exhaust holes on the two upper and lower adjacent graphite saggers are respectively arranged in one-to-one correspondence.
[0014] Compared with the prior art, the graphite sagger of the utility model has at least the following beneficial effects:
[0015] The utility model embodiment discloses a graphite sagger, which includes a bottom plate and a plurality of side plates connected end to end and constructed on the edge of the bottom plate to enclose a carrier area for mounting products, and an exhaust hole is provided on the bottom plate and is located near the side plate. Since there are no obvious openings on all sides, the products sintered in the graphite sagger will not directly contact with the external heat source, nor will they directly contact with the medium of the sintering process, so the products can be effectively protected from external interference. Since the exhaust hole is located near the side plate, compared with a sagger with an exhaust port on one side (single side) or exhaust ports uniformly opened on four sides of the side, the position of the exhaust hole in the structure of the graphite sagger of the utility model improves the maximum temperature difference in the graphite sagger and reduces the temperature difference in the graphite sagger. The performance difference of the products after sintering in the graphite sagger is reduced, and the consistency of the products after sintering is improved.
[0016] The graphite sagger of the utility model has good heat preservation performance and can effectively prevent the rapid loss of heat during the sintering process;
[0017] The graphite sagger of the utility model has good exhaust performance and can fully discharge binder during the sintering process.
[0018] The preparation process of the graphite sagger of the utility model is simple, with fewer parameters, and is conducive to mass production.
[0019] On the other hand, the sintering furnace provided by the utility model is based on the above-mentioned graphite sagger, and its beneficial effects refer to the beneficial effects of the above-mentioned graphite sagger, which will not be described one by one here.
[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the structure of a graphite sagger provided in an embodiment of the utility model;
[0023] Figure 2 A schematic structural diagram of a graphite sagger from another perspective provided in an embodiment of the utility model.
[0024] Description of reference numerals:
[0025] 1. Bottom plate; 11. Exhaust hole;
[0026] 2. Side panels. DETAILED DESCRIPTION
[0027] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.
[0028] In the description of the present invention, it should be clarified that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence; the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, and do not mean that the referred device or element must have a specific direction or position, and therefore cannot be understood as a limitation on the present invention.
[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] like Figure 1-2 As shown, an embodiment of the utility model provides a graphite sagger, which includes a bottom plate 1 and a plurality of side plates 2 connected end to end and constructed on the edge of the bottom plate 1, wherein the bottom plate 1 and the plurality of side plates 2 surround a carrier area for mounting products, and an exhaust through hole 11 is opened on the bottom plate 1, and the exhaust through hole 11 is close to the side plate 2.
[0031] In this embodiment, the graphite sagger includes a bottom plate 1 and a plurality of side plates 2 connected end to end and constructed on the edge of the bottom plate 1, wherein the bottom plate 1 and the plurality of side plates 2 surround a carrier area for mounting products, and an exhaust through hole 11 is opened on the bottom plate 1, and the exhaust through hole 11 is close to the side plate 2, that is, the exhaust through hole 11 is located at the edge of the bottom plate 1.
[0032] During the vacuum sintering process, the products to be sintered are evenly placed in the carrier area where the products are installed, and then the graphite saggers are stacked one by one (10-20 layers), and the top layer is only a graphite sagger without products to form a closed state. As the temperature rises, the organic matter in the product volatilizes from bottom to top along the exhaust through hole 11. Because there are no obvious openings around, the products sintered in the graphite sagger will not directly contact the external heat source, nor will they directly contact the sintering process medium, so the products can be effectively protected from external interference.
[0033] Since the exhaust hole 11 is located near the side plate 2, compared with a sagger with an exhaust port on one side (single side) or evenly opened on four sides of the side, the position of the exhaust hole 11 in the structure of the graphite sagger of the utility model improves the maximum temperature difference in the graphite sagger and reduces the temperature difference in the graphite sagger. The performance difference of the products after sintering in the graphite sagger is reduced, and the consistency of the products after sintering is improved.
[0034] The graphite sagger of the utility model has good heat preservation performance and can effectively prevent the rapid loss of heat during the sintering process;
[0035] The graphite sagger of the utility model has good exhaust performance and can fully discharge binder during the sintering process.
[0036] The preparation process of the graphite sagger of the utility model is simple, with fewer parameters, and is conducive to mass production.
[0037] In some embodiments, the exhaust hole 11 is opened at the connection between the two side panels 2 .
[0038] In this embodiment, the position of the exhaust hole 11 is relatively hidden, and the products sintered in the graphite sagger will not directly contact the external heat source, nor will they directly contact the sintering process medium, so the products can be effectively protected from external interference. The position of the exhaust hole 11 in the structure of the graphite sagger improves the maximum temperature difference in the graphite sagger and reduces the temperature difference in the graphite sagger. The performance difference of the products after sintering in the graphite sagger is reduced, and the consistency of the sintered products is improved.
[0039] In some embodiments, the bottom plate 1 is a quadrilateral plate-shaped structure, the number of the side plates 2 is four, the four side plates 2 are connected end to end, and the four side plates 2 are respectively connected to the four sides of the bottom plate 1 .
[0040] In this embodiment, the bottom plate 1 is a quadrilateral plate structure, the number of side plates 2 is four, the four side plates 2 are connected end to end, and the four side plates 2 are respectively connected to the four sides of the bottom plate 1 to form a graphite sagger with a square box structure.
[0041] In some embodiments, the number of the exhaust through holes 11 is four, and the four exhaust through holes 11 are all opened on the bottom plate 1 and are respectively located at four corners of the bottom plate 1 .
[0042] In this embodiment, there are four exhaust holes 11, which are all provided on the bottom plate 1 and are respectively located at the four corners of the bottom plate 1. Therefore, there are no obvious openings around the graphite sagger, and the products sintered in the graphite sagger will not directly contact with the external heat source or the sintering process medium, so the products can be effectively protected from external interference.
[0043] The position of the exhaust through hole 11 of the structure of the graphite sagger of the utility model improves the maximum temperature difference in the graphite sagger, reduces the temperature difference in the graphite sagger, reduces the performance difference of the products after sintering in the graphite sagger, and improves the consistency of the products after sintering, as can be seen from the data in Table 1 and Table 2.
[0044] Table 1 shows the measured temperature results at various points in the graphite sagger:
[0045]
[0046] Table 1
[0047] Description: This test is carried out at a sintering temperature of 1000℃ in a vacuum furnace for 2 hours. Graphite saggers of different structures (with an overall size of 200mm*200mm*30mm, and a wall thickness and bottom thickness of 10mm) are used to measure the temperature with a temperature measuring ring (the temperature measuring ring manufacturer is FERRO, and the temperature measuring ring test range is 850℃-1000℃). The first to fourth points are the four corners close to the bottom plate 1, and the fifth point is the center point of the graphite sagger. The unit of the temperature data of each point in Table 1 is ℃.
[0048] Table 2 is a comparison of the dimensional consistency of products sintered in graphite saggers:
[0049] Serial number Size range Size mean Within standard deviation Remark 1 9.95-10.53 10.22 0.168 Single side opening 2 10.00-10.48 10.25 0.147 Four-side opening 3 10.13-10.41 10.28 0.086 Optimized products
[0050] Table 2
[0051] The unit of the dimensional data obtained by the test in Table 2 is mm, and the optimized product is the product obtained by sintering the graphite sagger of this embodiment.
[0052] From the data in Table 1 and Table 2, it can be seen that the structure of the graphite sagger of the utility model is mainly to change the position of the exhaust port of the sintering carrier to achieve uniform heating and heat dissipation of the sintering carrier without affecting the exhaust function.
[0053] In some embodiments, the bottom plate 1 extends in all directions along the horizontal direction, and the side plates 2 are arranged perpendicular to the bottom plate 1 .
[0054] In some embodiments, two adjacent side panels 2 are vertically arranged.
[0055] In some embodiments, the exhaust through hole 11 is a square hole, and two adjacent side walls of the exhaust through hole 11 are coplanar with two adjacent side panels 2 respectively. This structure is convenient for manufacturing and processing.
[0056] Example 2
[0057] The embodiment of the utility model provides a sintering furnace, and the sintering furnace comprises the graphite sagger of embodiment 1.
[0058] In some embodiments, multiple layers of the graphite saggers are provided in the sintering furnace, and the exhaust holes 11 on two upper and lower adjacent graphite saggers are provided correspondingly.
[0059] In some embodiments, when the bottom plate 1 is a quadrilateral plate structure, the four exhaust holes 11 on the two upper and lower adjacent graphite saggers are respectively provided with a sintering furnace in a one-to-one correspondence.
[0060] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous technical features can be freely combined and superimposed.
[0061] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A graphite sagger, characterized in that: The graphite sagger comprises a bottom plate and a plurality of side plates connected end to end and constructed on the edge of the bottom plate, the bottom plate and the plurality of side plates are arranged to form a carrier area for mounting products, an exhaust through hole is provided on the bottom plate, the exhaust through hole is close to the side plate; the exhaust through hole is provided at the connection between two side plates; the bottom plate is a quadrilateral plate-shaped structure, the number of the side plates is four, the four side plates are connected end to end, and the four side plates are respectively connected to the four sides of the bottom plate; the number of the exhaust through holes is four, the four exhaust through holes are all provided on the bottom plate, and are respectively located at the four corners of the bottom plate; two adjacent side plates are arranged vertically; the exhaust through hole is a square hole, and two adjacent side walls of the exhaust through hole are respectively coplanar with two adjacent side plates.
2. The graphite sagger according to claim 1, characterized in that: The bottom plate extends in all directions along the horizontal direction, and the side plates are arranged perpendicularly to the bottom plate.
3. A sintering furnace, characterized in that: The sintering furnace comprises the graphite sagger according to any one of claims 1-2.
4. The sintering furnace according to claim 3, characterized in that: The sintering furnace is provided with multiple layers of the graphite saggers, and the exhaust through holes on two upper and lower adjacent graphite saggers are correspondingly arranged.
5. The sintering furnace according to claim 3, characterized in that: When the bottom plate is a quadrilateral plate structure, the four exhaust through holes on the two upper and lower adjacent graphite saggers are respectively arranged in one-to-one correspondence.