CN219713961U - Vacuum furnace for sintering silicon carbide roller - Google Patents
Vacuum furnace for sintering silicon carbide roller Download PDFInfo
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- CN219713961U CN219713961U CN202223610865.9U CN202223610865U CN219713961U CN 219713961 U CN219713961 U CN 219713961U CN 202223610865 U CN202223610865 U CN 202223610865U CN 219713961 U CN219713961 U CN 219713961U
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- heating
- furnace
- silicon carbide
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- sintering
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- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 64
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000005245 sintering Methods 0.000 title claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 138
- 239000000463 material Substances 0.000 claims abstract description 17
- 230000000712 assembly Effects 0.000 claims description 27
- 238000000429 assembly Methods 0.000 claims description 27
- 230000005855 radiation Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
The utility model discloses a vacuum furnace for sintering silicon carbide rollers, which comprises a furnace shell, furnace doors arranged at two ends of the furnace shell and a furnace lining arranged in the furnace shell and surrounding a furnace chamber, wherein a material bearing table for bearing materials is arranged at the bottom of the furnace chamber, more than two groups of heating components for heating the materials in the furnace chamber are arranged in the furnace chamber, and the more than two groups of heating components are sequentially arranged along the length direction from one end of the furnace door to the other end of the furnace door. The vacuum furnace for sintering the silicon carbide roller has the advantages of being applicable to the same furnace sintering of various types of silicon carbide rollers, ensuring the sintering quality, being good in compatibility and the like.
Description
Technical Field
The utility model relates to the technical field of heat treatment kiln equipment, in particular to a vacuum furnace for sintering silicon carbide rollers.
Background
As a vacuum heat treatment device, the vacuum furnace has the characteristics of no oxidization and decarbonization, high efficiency, energy conservation and the like, and is widely applied to the production and manufacture of parts in the fields of aviation, aerospace, weapon industry, nuclear industry and the like. The reaction sintering silicon carbide roller is a silicon carbide ceramic product, has good high-temperature strength, excellent thermal shock resistance and good corrosion resistance, and has very wide application in a lithium battery material sintering roller kiln, and the roller is usually sintered by a vacuum furnace.
In recent years, as the width of a roller kiln is larger and larger, the length of a main stream product is gradually increased from four rows to six rows, the length of a corresponding silicon carbide roller is also longer and longer, and the length of a sintering zone is gradually increased from 2.5 meters to 3-4 meters, and because of the main stream vacuum furnace for reaction sintering silicon carbide, the length of the sintering zone is between 3 and 5 meters, so that only one roller can be placed in the length direction, and the sintering utilization rate of the roller of the vacuum furnace is very low. The existing large-size vacuum furnace is only provided with one group of heating assemblies in the direction from the head to the tail of the furnace body, the heating assemblies comprise a plurality of heating rods which are arranged at intervals around the heating furnace chamber, each heating rod extends along the length direction of the whole heating furnace chamber (extends from the furnace head to the furnace tail), and even two stacks of roller rods can be accommodated, but because the roller rods of different types are different in length, the roller rods of different lengths correspond to different thicknesses, the requirements of the roller rods of different thicknesses on heating power are different, the intensity of the roller rods is reduced due to overhigh or overlow heating power, and sintering quality cannot be ensured. Therefore, the existing large-size vacuum furnace cannot sinter more than two types of roller bars in the same furnace.
Disclosure of Invention
The utility model aims to solve the technical problems of overcoming the defects existing in the prior art and providing the vacuum furnace for sintering the silicon carbide roller rods, which is applicable to the same-furnace sintering of the silicon carbide roller rods with various models, can ensure the sintering quality and has good compatibility.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a vacuum furnace for sintering of carborundum roller stick, includes the stove outer covering, locates the furnace gate at stove outer covering both ends and locates in the stove outer covering and enclose into furnace's furnace wall, furnace's bottom is equipped with the material-bearing platform that is used for bearing the weight of the material, install more than two sets of heating element to the material in the furnace, more than two sets of heating element arrange in proper order along the length direction of one end furnace gate to the other end furnace gate.
As a further improvement of the above technical scheme:
the heating assembly comprises a plurality of heating rods which are arranged around the hearth at intervals, and each heating rod extends along the length direction.
In each heating assembly, the number of heating rods positioned at the lower part of the hearth is smaller than that of the heating rods positioned at the upper part of the hearth.
Three groups of heating components are arranged in the furnace shell, and the lengths of heating rods of the three groups of heating components are the same.
Three groups of heating components are arranged in the furnace shell, and the length of a heating rod of the heating component positioned in the middle is longer than that of the heating rods of the heating components positioned at two ends.
Three groups of heating components are arranged in the furnace shell, and the length of the heating rods of the heating components at two ends is longer than that of the heating rods of the heating components in the middle.
Three groups of heating components are arranged in the furnace shell, and the lengths of heating rods of the three groups of heating components are reduced group by group along the length direction.
The size of the hearth in the length direction is 6m-10m.
Compared with the prior art, the utility model has the advantages that: according to the vacuum furnace for sintering the silicon carbide roller rods, more than two groups of heating assemblies which are sequentially arranged along the length direction are arranged in the furnace chamber, so that the vacuum furnace can be used for sintering silicon carbide roller rods of more than two different types in the same furnace, the sintering quality can be ensured, when the vacuum furnace is used, the silicon carbide roller rods of more than two different types can be sequentially placed in the furnace chamber along the length direction, the heating power requirements of the silicon carbide roller rods of various types can be sequentially met along the length direction by controlling the heating assemblies of each group, and further, the silicon carbide roller rods of various types can be heated by the heating power corresponding to each type under the same sintering time of the same furnace, the sintering quality of the silicon carbide roller rods of various types can be ensured, and the vacuum furnace has good compatibility.
Drawings
Fig. 1 is a schematic diagram of a front view of a vacuum furnace for sintering silicon carbide rolls.
Fig. 2 is a schematic side sectional structure of a vacuum furnace for sintering silicon carbide rolls.
FIG. 3 is a schematic view of a structure in which three sets of heating assemblies are disposed within a furnace.
Fig. 4 is a schematic structural view of a three-group heating assembly arrangement.
Legend description:
1. a furnace shell; 2. a furnace door; 3. a furnace lining; 4. a furnace; 5. a material bearing table; 6. a heating assembly; 61. and (5) heating the rod.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the specific examples.
As shown in fig. 1 to 4, the vacuum furnace for sintering silicon carbide roller bars of the embodiment comprises a furnace shell 1, furnace doors 2 arranged at two ends of the furnace shell 1 and a furnace lining 3 arranged in the furnace shell 1 and enclosing a furnace cavity 4, wherein a material bearing table 5 for bearing materials is arranged at the bottom of the furnace cavity 4, more than two groups of heating assemblies 6 for heating the materials in the furnace cavity 4 are arranged in the furnace cavity 4, and the more than two groups of heating assemblies 6 are sequentially arranged along the length direction from one end furnace door 2 to the other end furnace door 2. This a vacuum furnace for sintering of carborundum roller stick, owing to install the heating element 6 that two sets of more along length direction arranged in proper order in furnace 4, can be used to the same stove sintering of carborundum roller stick of more than two kinds of different models, and can guarantee sintering quality, can place the carborundum roller stick of more than two kinds of different models in proper order in furnace 4 along length direction during the use, through each heating element of control, can satisfy the heating power demand of each kind of carborundum roller stick in proper order along length direction, and then guarantee under the equal sintering time with the stove, heat each kind of carborundum roller stick with the heating power that corresponds respectively, can ensure the sintering quality of each kind of carborundum roller stick, its compatibility is good.
In this embodiment, the heating assembly 6 includes a plurality of heating rods 61 arranged at intervals around the furnace 4, each heating rod 61 extending in the longitudinal direction.
In the present embodiment, in each heating module 6, the number of heating rods 61 located in the lower portion of the furnace 4 is smaller than the number of heating rods 61 located in the upper portion of the furnace 4. Because under the vacuum state, the heating rod 61 is heated by transmitting energy to the silicon carbide roller rod in a radiation mode, and the silicon carbide roller rod is carried on the material bearing table 5 for sintering, the heat radiation of the lower heating rod 61 can heat the material bearing table 5, the material bearing table 5 generates secondary heat radiation again, and the secondary heat radiation irradiates to the non-roller rod position, so that the heating efficiency is low, and under the condition that the number of the heating rods 61 is fixed, the number of the heating rods 61 at the lower part of the hearth 4 is small, the situation can be reduced, the heating efficiency is improved, and meanwhile, the condition that the temperature difference at the lower part is overlarge due to the fact that the heating rods 61 are not arranged at the lower part of the hearth 4 can be avoided, and the sintering quality and the sintering efficiency are influenced.
In this embodiment, as shown in fig. 3 and 4, three groups of heating elements 6 are provided in the furnace shell 1, and the heating rods 61 of the three groups of heating elements 6 have the same length. Under the conditions of adopting the heating rods 61 with the same size and ensuring convenient manufacturing and assembly, the method is applicable to sintering at least three types of silicon carbide rollers simultaneously, and the length of any one type of silicon carbide roller among the three types of silicon carbide rollers is not more than the total length of the two groups of heating assemblies 6. For example, when three groups of heating assemblies 6 are sequentially divided into a first assembly, a second assembly and a third assembly from one end to the other end, and when three types of silicon carbide roller rods can be just positioned in the heating sections corresponding to the three groups of heating assemblies 6, the respective heating powers of the three groups of heating assemblies 6 can be controlled respectively, and the three types of silicon carbide roller rods can be heated correspondingly; when the first type silicon carbide roller rod simultaneously stretches into the first component, the second component and the second type silicon carbide roller rod simultaneously stretches into the second component, the third component and the third type silicon carbide roller rod which are positioned in a heating interval corresponding to the third component, the heating power of the third component meeting the third type silicon carbide roller rod can be controlled firstly, then the heating power of the first component is combined, the heating power of the second component meeting the second type silicon carbide roller rod is controlled, and then the heating power of the second component is combined, and the heating power of the first component meeting the first type silicon carbide roller rod is controlled; when the first type silicon carbide roller rod is positioned in the heating interval corresponding to the first component, the second type silicon carbide roller rod simultaneously stretches into the first component, the second component and the third component, and the third type silicon carbide roller rod is positioned in the heating interval corresponding to the third component, the first component and the third component can be controlled respectively, the heating power of the first type and the third type silicon carbide roller rod can be met respectively, and the heating power of the first component and the heating power of the third component are combined, so that the heating power of the second component can be controlled, and the heating power of the second type silicon carbide roller rod can be met; when the first type silicon carbide roller rod simultaneously stretches into the first component and the second type silicon carbide roller rod is positioned in a heating zone corresponding to the second component and the third type silicon carbide roller rod simultaneously stretches into the second component and the third component, the heating power of the second component and the second type silicon carbide roller rod can be controlled firstly, then the heating power of the second component is combined, the heating power of the first component and the heating power of the second component are controlled, and the heating power of the third component and the heating power of the third type silicon carbide roller rod are controlled.
In other embodiments, the lengths of the heating rods 61 of the three groups of heating assemblies 6 can be set to respectively correspond to the lengths of the three types of silicon carbide rollers according to the actual heating power requirements of the three types of silicon carbide rollers sintered in the same furnace, so that each type of silicon carbide roller is exactly corresponding to the heating section of one group of heating assemblies 6. For example, on the basis of three sets of heating elements 6 provided in the furnace shell 1, the length of the heating rod 61 of the heating element 6 positioned in the middle is made longer than the length of the heating rod 61 of the heating element 6 positioned at both ends. Or on the basis that three groups of heating assemblies 6 are arranged in the furnace shell 1, the length of the heating rods 61 of the heating assemblies 6 positioned at two ends is longer than that of the heating rods 61 of the heating assemblies 6 positioned in the middle. Or on the basis of arranging three groups of heating assemblies 6 in the furnace shell 1, the lengths of the heating rods 61 of the three groups of heating assemblies 6 are reduced group by group along the length direction.
In the embodiment, the dimension of the hearth 4 in the length direction is 6m-10m, and the method is applicable to the common two or three types of common silicon carbide roller rod in the prior art.
Other structural components of the vacuum furnace for sintering the silicon carbide roller in the embodiment adopt the prior art, and for example, the vacuum furnace further comprises an air inlet system, a degumming system, a cooling system, a control system and the like for normal operation of the vacuum furnace. Wherein, the hearth 4 is a cuboid structure with a rectangular section, and the section size is preferably 700X 700 mm-1200X 1200 mm. The furnace lining 3 is made of graphite felt as a heat insulation layer.
The above description is merely a preferred embodiment of the present utility model, and the scope of the present utility model is not limited to the above examples. Modifications and variations which would be obvious to those skilled in the art without departing from the spirit of the utility model are also considered to be within the scope of the utility model.
Claims (8)
1. The utility model provides a vacuum furnace for sintering of carborundum roller stick, includes stove outer covering (1), locates furnace gate (2) at stove outer covering (1) both ends and locates in stove outer covering (1) and enclose into furnace lining (3) of furnace (4), the bottom of furnace (4) is equipped with and is used for bearing material hold material platform (5), its characterized in that: more than two groups of heating assemblies (6) for heating materials in the hearth (4) are arranged in the hearth (4), and the more than two groups of heating assemblies (6) are sequentially arranged along the length direction from one end furnace door (2) to the other end furnace door (2).
2. The vacuum furnace for sintering silicon carbide rolls according to claim 1, wherein: the heating assembly (6) comprises a plurality of heating rods (61) which are arranged around the hearth (4) at intervals, and each heating rod (61) is arranged in an extending mode along the length direction.
3. The vacuum furnace for sintering silicon carbide rolls according to claim 2, wherein: in each heating assembly (6), the number of heating rods (61) positioned at the lower part of the hearth (4) is smaller than the number of heating rods (61) positioned at the upper part of the hearth (4).
4. The vacuum furnace for sintering silicon carbide rolls according to claim 2, wherein: three groups of heating components (6) are arranged in the furnace shell (1), and the lengths of heating rods (61) of the three groups of heating components (6) are the same.
5. The vacuum furnace for sintering silicon carbide rolls according to claim 2, wherein: three groups of heating assemblies (6) are arranged in the furnace shell (1), and the length of a heating rod (61) of the heating assembly (6) positioned in the middle is larger than that of the heating rods (61) of the heating assemblies (6) positioned at two ends.
6. The vacuum furnace for sintering silicon carbide rolls according to claim 2, wherein: three groups of heating assemblies (6) are arranged in the furnace shell (1), and the lengths of heating rods (61) of the heating assemblies (6) at two ends are longer than those of heating rods (61) of the heating assemblies (6) in the middle.
7. The vacuum furnace for sintering silicon carbide rolls according to claim 2, wherein: three groups of heating assemblies (6) are arranged in the furnace shell (1), and the lengths of heating rods (61) of the three groups of heating assemblies (6) are reduced group by group along the length direction.
8. The vacuum furnace for sintering silicon carbide rolls according to any one of claims 1 to 7, wherein: the size of the hearth (4) in the length direction is 6m-10m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223610865.9U CN219713961U (en) | 2022-12-30 | 2022-12-30 | Vacuum furnace for sintering silicon carbide roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223610865.9U CN219713961U (en) | 2022-12-30 | 2022-12-30 | Vacuum furnace for sintering silicon carbide roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219713961U true CN219713961U (en) | 2023-09-19 |
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ID=88015385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223610865.9U Active CN219713961U (en) | 2022-12-30 | 2022-12-30 | Vacuum furnace for sintering silicon carbide roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219713961U (en) |
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2022
- 2022-12-30 CN CN202223610865.9U patent/CN219713961U/en active Active
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