CN110671936A - Square furnace core made of refractory material and used for 2500 ℃ tungsten-molybdenum sintering furnace - Google Patents
Square furnace core made of refractory material and used for 2500 ℃ tungsten-molybdenum sintering furnace Download PDFInfo
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- CN110671936A CN110671936A CN201910976846.1A CN201910976846A CN110671936A CN 110671936 A CN110671936 A CN 110671936A CN 201910976846 A CN201910976846 A CN 201910976846A CN 110671936 A CN110671936 A CN 110671936A
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- 239000011819 refractory material Substances 0.000 title claims abstract description 55
- 238000005245 sintering Methods 0.000 title claims abstract description 46
- MGRWKWACZDFZJT-UHFFFAOYSA-N molybdenum tungsten Chemical compound [Mo].[W] MGRWKWACZDFZJT-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000011449 brick Substances 0.000 claims description 579
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 34
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 description 8
- 230000006698 induction Effects 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
- F27B14/061—Induction furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/10—Monolithic linings; Supports therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a square furnace core for a 2500 ℃ tungsten-molybdenum sintering furnace made of refractory materials, which comprises an outer layer furnace core and an inner layer furnace core made of refractory materials, wherein the inner layer furnace core is filled in the outer layer furnace core, the center of the inner layer furnace core is provided with a through vent hole, the cross sections of the outer layer furnace core and the inner layer furnace core are both square, an expansion gap is arranged between the outer layer furnace core and the inner layer furnace core, the range of the expansion gap is 0.2 ~ 5mm, the furnace core is of a square structure, and a corresponding furnace lining is also of a square structure, so that a sintered tungsten-molybdenum plate blank product can be horizontally placed on a bottom support on the upper side of the furnace core, the top of the square furnace core is flush with the top of the bottom support, the bending deformation of the sintered tungsten-molybdenum plate blank product is improved to the maximum extent, the straightening and leveling procedures of the tungsten-molybdenum product are greatly reduced, the production cost is reduced, and the influence of heating and pressure processing in the shape correcting process on the quality of the.
Description
Technical Field
The invention belongs to the technical field of tungsten and molybdenum processing equipment, and particularly relates to a square furnace core made of refractory materials and used for a 2500 ℃ tungsten and molybdenum sintering furnace.
Background
The medium frequency induction sintering furnace is important equipment used for sintering special metals such as tungsten, molybdenum and the like, the highest temperature of the currently used tungsten-molybdenum sintering furnace is 2300 ℃, and because the environment and the temperature of different parts of the sintering furnace are different, the structure of the refractory material of the furnace core is different, so that the service life of the refractory material of each part is different.
At present, the hearth of a tungsten-molybdenum sintering furnace which is conventionally used is round, and when a plate blank is sintered, the space utilization rate is low, the energy consumption is high, the efficiency is low, and the requirement for large-scale sintering of the plate blank cannot be met. In addition, in the sintering process, due to insufficient charging, the slab is easy to deform in the sintering process, so that the subsequent processing and manufacturing are inconvenient, in order to save cost, the deformed slab needs to be heated and corrected, the production cost is increased, and the quality of the product is influenced by heating and pressure processing in the correction process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a square furnace core made of refractory materials and used for a 2500 ℃ tungsten-molybdenum sintering furnace, and overcomes the defects of the prior art that 1: the hearth of the tungsten-molybdenum sintering furnace which is conventionally used at present is round, and when a plate blank is sintered, the space utilization rate is low, the energy consumption is high, the efficiency is low, and the requirement for large-scale sintering of the plate blank cannot be met; 2: the prior sintering furnace plate blank is easy to deform in the sintering process, and is inconvenient for subsequent processing and manufacturing; 3: the deformed plate blank needs to be heated and corrected, so that the production cost is increased, and the quality of a product is influenced by heating and pressure processing in the correction process; 4: the prior art does not provide the problems of a corresponding square furnace core and the like for a square tungsten-molybdenum induction sintering furnace.
In order to solve the technical problem, the square furnace core for the 2500 ℃ tungsten-molybdenum sintering furnace made of refractory materials comprises an outer layer furnace core and an inner layer furnace core made of refractory materials, wherein the inner layer furnace core is filled in the outer layer furnace core, a through vent hole is formed in the center of the inner layer furnace core, the cross sections of the outer layer furnace core and the inner layer furnace core are square, an expansion gap is formed between the outer layer furnace core and the inner layer furnace core, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, the outer furnace core is formed by stacking an outer layer top layer brick, an outer layer upper layer brick, an outer layer middle layer brick and an outer layer bottom layer brick, wherein the outer layer middle layer brick of a plurality of layers is stacked on the upper end surface of the outer layer bottom layer brick, the outer layer upper layer brick is stacked on the uppermost end of the outer layer middle layer brick of the plurality of layers, and the outer layer top layer brick is stacked on the upper end surface of the outer layer upper layer brick.
Preferably, outer top layer brick includes square outer top layer brick and the outer top layer brick in turning, and wherein outer top layer brick includes square outer upper layer brick and the outer upper layer brick in turning, outer middle level brick includes square outer middle level brick and the outer middle level brick in turning, and wherein outer bottom layer brick includes square outer bottom layer brick and the outer bottom layer brick in turning, square outer top layer brick, square outer upper layer brick, square outer middle level brick and the outer bottom layer brick in square are used for building four limits of outer wick, and wherein outer top layer brick in turning, the outer upper layer brick in turning, the outer middle level brick in turning and the outer bottom layer brick in turning are used for building four angles of outer wick, and wherein the inner layer wick is filled in and is built inside the outer wick that forms by outer top layer brick, outer upper layer brick, outer middle level brick and outer bottom layer brick.
Preferably, the inner-layer furnace core is formed by stacking core bricks, wherein the core bricks are in a cube or cuboid structure, the core bricks are flatly stacked on the inner side of the outer-layer furnace core, and the expansion gap between every two adjacent core bricks is 0.2 ~ 5 mm.
Preferably, the terminal surface is equipped with protruding tang under the outer top layer brick, and wherein the protruding tang and the outer upper brick up end of outer top layer brick cooperate, an end face downside that outer top layer brick is close to the inlayer stove core is equipped with the spread groove, and wherein the height of spread groove is the same with the thickness of core brick, the spread groove is used for being connected with the core brick, and wherein the size of expansion joint between spread groove and the core brick is 0.2 ~ 5 mm.
Preferably, outer upper brick up end is equipped with the concave tang, and wherein the terminal surface also is equipped with the convex tang under the outer upper brick, an terminal surface downside that outer upper brick is close to the inlayer stove core also is equipped with the spread groove, and wherein the height of spread groove is the same with the thickness of core brick, the spread groove is used for being connected with the core brick, and wherein the size of expansion joint between spread groove and the core brick is 0.2 ~ 5mm, a terminal surface that outer upper brick kept away from the inlayer stove core is equipped with the inclined plane, and wherein the contained angle between inclined plane and the horizontal plane is 50 ~ 65, and wherein outer upper brick upper end size is less than the lower extreme size, the concave tang of outer upper brick cooperates with the convex tang of outer top layer brick, and wherein the convex tang of outer upper brick cooperates with outer middle layer brick up end, and wherein the expansion joint size between concave tang and the convex tang is 0.2 ~ 5 mm.
Preferably, outer middle level brick up end is equipped with the concave tang, and wherein the terminal surface also is equipped with the convex tang under the outer middle level brick, an end face downside that outer middle level brick is close to the inlayer stove core also is equipped with the spread groove, and wherein the height of spread groove is the same with the thickness of core brick, the spread groove is used for being connected with the core brick, and wherein the size of expansion joint between spread groove and the core brick is 0.2 ~ 5mm, a plurality of outer middle level bricks cooperate through concave tang and convex tang and build the multilayer, and wherein the concave tang of the outer middle level brick the superiors of multilayer cooperates with the convex tang of outer upper level brick, the convex tang of the outer middle level brick lower floor of multilayer cooperates with outer bottom brick up end, and wherein the expansion joint size between concave tang and the convex tang is 0.2 ~ 5 mm.
Preferably, outer bottom brick up end is equipped with the concave spigot, and wherein outer bottom brick is close to the terminal surface downside of inlayer stove core and also is equipped with the spread groove, and wherein the height of spread groove is the same with the thickness of core brick, the spread groove is used for being connected with the core brick, and wherein the size of expansion joint between spread groove and the core brick is 0.2 ~ 5mm, the concave spigot of outer bottom brick cooperates with the convex spigot of the outer middle level brick lower floor of multilayer.
Preferably, the weight range of each outer layer top brick, each outer layer upper brick, each outer layer middle brick, each outer layer bottom brick and each core brick is 5 ~ 15kg, wherein the outer layer top bricks and the outer layer upper bricks are made of zirconia and are used for resisting high temperature and supporting, the outer layer bottom bricks are made of alumina and are used for insulating and supporting, the parts of the outer layer middle bricks, which are close to the outer layer upper bricks, are made of zirconia, the parts of the outer layer middle bricks, which are close to the outer layer bottom bricks, are made of alumina, the upper half core bricks are made of zirconia, the lower half core bricks are made of alumina, the height of a square furnace core made of zirconia is greater than 200mm, the height of the square furnace core made of alumina is greater than 350mm, the length of the square furnace core is 1030mm, the width of the square furnace core is 1230mm, the height of the square furnace core is 600 ~ 800mm, the square furnace core is sleeved at the bottom of the inner side of the square furnace lining, and the upper end face of the square furnace core is flush with the furnace lining at the bottom.
Compared with the prior art, the invention has the advantages that:
(1) the furnace core is of a square structure, the corresponding furnace lining is also of a square structure, and the structure can enable the sintered tungsten-molybdenum plate blank product to be horizontally placed at the top of the square furnace core, wherein the top of the square furnace core is flush with the top of a bottom support of the furnace lining, so that the bending deformation of the sintered tungsten-molybdenum plate blank product is improved to the greatest extent, the straightening and leveling procedures of the tungsten-molybdenum product are greatly reduced, the production cost is reduced, and the influence of heating and pressure processing on the product quality in the shape correcting process is avoided;
(2) the upper half part of the furnace core is made of zirconia and used for resisting high temperature and supporting, the lower half part of the furnace core is made of alumina and used for insulating and supporting, wherein the height of the square furnace core made of zirconia is greater than 200mm, the height of the square furnace core made of alumina is greater than 350mm, the service life and the utilization rate of the furnace core can be prolonged by the refractory material, the energy consumption is reduced, and the square furnace core can be used for a long time at the temperature of 2500 ℃;
(3) the outer layer furnace core of the square furnace core is built by outer layer top layer bricks, outer layer upper layer bricks, outer layer middle layer bricks and outer layer bottom layer bricks, and the inner part of the square furnace core is filled by tiling the core bricks, wherein the outer layer top layer bricks, the outer layer upper layer bricks, the outer layer middle layer bricks and the outer layer bottom layer bricks are matched through the matching of the concave rabbet and the convex rabbet, so that the energy consumption is greatly reduced;
(4) the square furnace core and the square furnace lining are matched, so that the charging utilization rate of the furnace lining is greatly increased, the energy consumption is greatly reduced compared with a vertical round structure, the capacity is increased, and the market competitiveness of the product is effectively improved.
Drawings
FIG. 1 is a schematic sectional view of a square core for a 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material according to the present invention;
FIG. 2 is a schematic top view of a square core for a 2500 deg.C tungsten-molybdenum sintering furnace made of refractory material according to the present invention;
FIG. 3 is a schematic structural diagram of the upper layer of the outer layer brick of the square core for the 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material according to the present invention;
FIG. 4 is a schematic top view of an upper layer brick of a corner outer layer of a square furnace core for a 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material according to the present invention;
FIG. 5 is a schematic structural diagram of the outer layer bottom layer brick of the square furnace core for the 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material according to the present invention;
FIG. 6 is a schematic top view of a bottom brick at the corner of a square furnace core for a 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material according to the present invention;
FIG. 7 is a schematic diagram showing the use of a square core for a 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material according to the present invention.
Description of reference numerals:
1-outer layer furnace core, 2-inner layer furnace core, 3-vent hole, 4-outer layer top layer brick, 5-outer layer upper layer brick, 6-outer layer middle layer brick, 7-outer layer bottom layer brick, 8-core brick, 9-convex rabbet, 10-concave rabbet, 11-inclined plane and 12-connecting groove.
Detailed Description
The following describes embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes, and other elements shown in the specification are included for the purpose of understanding and reading only, and are not intended to limit the scope of the invention, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Example 1
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Example 2
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the outer furnace core 1 is formed by stacking an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom layer brick 7, wherein the outer layer middle layer brick 6 is stacked on the upper end surface of the outer layer bottom layer brick 7, the outer layer upper layer brick 5 is stacked on the uppermost end of the outer layer middle layer brick 6, and the outer layer top layer brick 4 is stacked on the upper end surface of the outer layer upper layer brick 5.
Example 3
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the outer furnace core 1 is formed by stacking an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom layer brick 7, wherein the outer layer middle layer brick 6 is stacked on the upper end surface of the outer layer bottom layer brick 7, the outer layer upper layer brick 5 is stacked on the uppermost end of the outer layer middle layer brick 6, and the outer layer top layer brick 4 is stacked on the upper end surface of the outer layer upper layer brick 5.
Preferably, as shown in fig. 1, the outer roof tiles 4 include square outer roof tiles and corner outer roof tiles, wherein the outer layer upper layer brick 5 comprises a square outer layer upper layer brick and a corner outer layer upper layer brick, the outer layer middle layer brick 6 comprises a square outer layer middle layer brick and a corner outer layer middle layer brick, wherein the outer bottom layer bricks 7 comprise square outer bottom layer bricks and corner outer bottom layer bricks, the square outer top layer bricks, the square outer upper layer bricks, the square outer middle layer bricks and the square outer bottom layer bricks are used for building four sides of the outer furnace core 1, wherein the corner outer layer top layer bricks, the corner outer layer upper layer bricks, the corner outer layer middle layer bricks and the corner outer layer bottom layer bricks are used for building four corners of the outer layer furnace core 1, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1 which is built by outer layer top layer bricks 4, outer layer upper layer bricks 5, outer layer middle layer bricks 6 and outer layer bottom layer bricks 7.
Example 4
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the outer furnace core 1 is formed by stacking an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom layer brick 7, wherein the outer layer middle layer brick 6 is stacked on the upper end surface of the outer layer bottom layer brick 7, the outer layer upper layer brick 5 is stacked on the uppermost end of the outer layer middle layer brick 6, and the outer layer top layer brick 4 is stacked on the upper end surface of the outer layer upper layer brick 5.
Preferably, as shown in fig. 1, the outer roof tiles 4 include square outer roof tiles and corner outer roof tiles, wherein the outer layer upper layer brick 5 comprises a square outer layer upper layer brick and a corner outer layer upper layer brick, the outer layer middle layer brick 6 comprises a square outer layer middle layer brick and a corner outer layer middle layer brick, wherein the outer bottom layer bricks 7 comprise square outer bottom layer bricks and corner outer bottom layer bricks, the square outer top layer bricks, the square outer upper layer bricks, the square outer middle layer bricks and the square outer bottom layer bricks are used for building four sides of the outer furnace core 1, wherein the corner outer layer top layer bricks, the corner outer layer upper layer bricks, the corner outer layer middle layer bricks and the corner outer layer bottom layer bricks are used for building four corners of the outer layer furnace core 1, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1 which is built by outer layer top layer bricks 4, outer layer upper layer bricks 5, outer layer middle layer bricks 6 and outer layer bottom layer bricks 7.
As shown in fig. 1 ~ 2, the inner layer furnace core 2 is built by core bricks 8, wherein the core bricks 8 are in a cube or cuboid structure, the core bricks 8 are laid on the inner side of the outer layer furnace core 1, and the expansion gap between two adjacent core bricks 8 is 0.2 ~ 5 mm.
Example 5
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the outer furnace core 1 is formed by stacking an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom layer brick 7, wherein the outer layer middle layer brick 6 is stacked on the upper end surface of the outer layer bottom layer brick 7, the outer layer upper layer brick 5 is stacked on the uppermost end of the outer layer middle layer brick 6, and the outer layer top layer brick 4 is stacked on the upper end surface of the outer layer upper layer brick 5.
Preferably, as shown in fig. 1, the outer roof tiles 4 include square outer roof tiles and corner outer roof tiles, wherein the outer layer upper layer brick 5 comprises a square outer layer upper layer brick and a corner outer layer upper layer brick, the outer layer middle layer brick 6 comprises a square outer layer middle layer brick and a corner outer layer middle layer brick, wherein the outer bottom layer bricks 7 comprise square outer bottom layer bricks and corner outer bottom layer bricks, the square outer top layer bricks, the square outer upper layer bricks, the square outer middle layer bricks and the square outer bottom layer bricks are used for building four sides of the outer furnace core 1, wherein the corner outer layer top layer bricks, the corner outer layer upper layer bricks, the corner outer layer middle layer bricks and the corner outer layer bottom layer bricks are used for building four corners of the outer layer furnace core 1, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1 which is built by outer layer top layer bricks 4, outer layer upper layer bricks 5, outer layer middle layer bricks 6 and outer layer bottom layer bricks 7.
As shown in fig. 1 ~ 2, the inner layer furnace core 2 is built by core bricks 8, wherein the core bricks 8 are in a cube or cuboid structure, the core bricks 8 are laid on the inner side of the outer layer furnace core 1, and the expansion gap between two adjacent core bricks 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the lower end face of the outer-layer top tile 4 is provided with a male end 9, wherein the male end 9 of the outer-layer top tile 4 is matched with the upper end face of the outer-layer upper tile 5, the lower side of one end face of the outer-layer top tile 4 close to the inner-layer furnace core 2 is provided with a connecting groove 12, wherein the height of the connecting groove 12 is the same as the thickness of the core tile 8, the connecting groove 12 is used for connecting with the core tile 8, and the size of an expansion gap between the connecting groove 12 and the core tile 8 is 0.2 ~ 5 mm.
Example 6
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the outer furnace core 1 is formed by stacking an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom layer brick 7, wherein the outer layer middle layer brick 6 is stacked on the upper end surface of the outer layer bottom layer brick 7, the outer layer upper layer brick 5 is stacked on the uppermost end of the outer layer middle layer brick 6, and the outer layer top layer brick 4 is stacked on the upper end surface of the outer layer upper layer brick 5.
Preferably, as shown in fig. 1, the outer roof tiles 4 include square outer roof tiles and corner outer roof tiles, wherein the outer layer upper layer brick 5 comprises a square outer layer upper layer brick and a corner outer layer upper layer brick, the outer layer middle layer brick 6 comprises a square outer layer middle layer brick and a corner outer layer middle layer brick, wherein the outer bottom layer bricks 7 comprise square outer bottom layer bricks and corner outer bottom layer bricks, the square outer top layer bricks, the square outer upper layer bricks, the square outer middle layer bricks and the square outer bottom layer bricks are used for building four sides of the outer furnace core 1, wherein the corner outer layer top layer bricks, the corner outer layer upper layer bricks, the corner outer layer middle layer bricks and the corner outer layer bottom layer bricks are used for building four corners of the outer layer furnace core 1, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1 which is built by outer layer top layer bricks 4, outer layer upper layer bricks 5, outer layer middle layer bricks 6 and outer layer bottom layer bricks 7.
As shown in fig. 1 ~ 2, the inner layer furnace core 2 is built by core bricks 8, wherein the core bricks 8 are in a cube or cuboid structure, the core bricks 8 are laid on the inner side of the outer layer furnace core 1, and the expansion gap between two adjacent core bricks 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the lower end face of the outer-layer top tile 4 is provided with a male end 9, wherein the male end 9 of the outer-layer top tile 4 is matched with the upper end face of the outer-layer upper tile 5, the lower side of one end face of the outer-layer top tile 4 close to the inner-layer furnace core 2 is provided with a connecting groove 12, wherein the height of the connecting groove 12 is the same as the thickness of the core tile 8, the connecting groove 12 is used for connecting with the core tile 8, and the size of an expansion gap between the connecting groove 12 and the core tile 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 3 ~, the upper end face of the outer upper brick 5 is provided with a concave seam allowance 10, wherein the lower end face of the outer upper brick 5 is also provided with a convex seam allowance 9, the lower side of one end face of the outer upper brick 5, which is close to the inner furnace core 2, is also provided with a connecting groove 12, the height of the connecting groove 12 is the same as the thickness of the core brick 8, the connecting groove 12 is used for being connected with the core brick 8, the size of an expansion seam between the connecting groove 12 and the core brick 8 is 0.2 ~ mm, one end face of the outer upper brick 5, which is far away from the inner furnace core 2, is provided with an inclined plane 11, the included angle between the inclined plane 11 and the horizontal plane is 50 ~ °, the upper end size of the outer upper brick 5 is smaller than the lower end size, the concave seam allowance 10 of the outer upper brick 5 is matched with the convex seam allowance 9 of the outer brick 4, wherein the convex seam allowance 9 of the outer upper brick 5 is matched with the upper end face of the outer brick 6, and the size of the top layer is 0.2 mm ~ mm.
Example 7
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the outer furnace core 1 is formed by stacking an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom layer brick 7, wherein the outer layer middle layer brick 6 is stacked on the upper end surface of the outer layer bottom layer brick 7, the outer layer upper layer brick 5 is stacked on the uppermost end of the outer layer middle layer brick 6, and the outer layer top layer brick 4 is stacked on the upper end surface of the outer layer upper layer brick 5.
Preferably, as shown in fig. 1, the outer roof tiles 4 include square outer roof tiles and corner outer roof tiles, wherein the outer layer upper layer brick 5 comprises a square outer layer upper layer brick and a corner outer layer upper layer brick, the outer layer middle layer brick 6 comprises a square outer layer middle layer brick and a corner outer layer middle layer brick, wherein the outer bottom layer bricks 7 comprise square outer bottom layer bricks and corner outer bottom layer bricks, the square outer top layer bricks, the square outer upper layer bricks, the square outer middle layer bricks and the square outer bottom layer bricks are used for building four sides of the outer furnace core 1, wherein the corner outer layer top layer bricks, the corner outer layer upper layer bricks, the corner outer layer middle layer bricks and the corner outer layer bottom layer bricks are used for building four corners of the outer layer furnace core 1, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1 which is built by outer layer top layer bricks 4, outer layer upper layer bricks 5, outer layer middle layer bricks 6 and outer layer bottom layer bricks 7.
As shown in fig. 1 ~ 2, the inner layer furnace core 2 is built by core bricks 8, wherein the core bricks 8 are in a cube or cuboid structure, the core bricks 8 are laid on the inner side of the outer layer furnace core 1, and the expansion gap between two adjacent core bricks 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the lower end face of the outer-layer top tile 4 is provided with a male end 9, wherein the male end 9 of the outer-layer top tile 4 is matched with the upper end face of the outer-layer upper tile 5, the lower side of one end face of the outer-layer top tile 4 close to the inner-layer furnace core 2 is provided with a connecting groove 12, wherein the height of the connecting groove 12 is the same as the thickness of the core tile 8, the connecting groove 12 is used for connecting with the core tile 8, and the size of an expansion gap between the connecting groove 12 and the core tile 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 3 ~, the upper end face of the outer upper brick 5 is provided with a concave seam allowance 10, wherein the lower end face of the outer upper brick 5 is also provided with a convex seam allowance 9, the lower side of one end face of the outer upper brick 5, which is close to the inner furnace core 2, is also provided with a connecting groove 12, the height of the connecting groove 12 is the same as the thickness of the core brick 8, the connecting groove 12 is used for being connected with the core brick 8, the size of an expansion seam between the connecting groove 12 and the core brick 8 is 0.2 ~ mm, one end face of the outer upper brick 5, which is far away from the inner furnace core 2, is provided with an inclined plane 11, the included angle between the inclined plane 11 and the horizontal plane is 50 ~ °, the upper end size of the outer upper brick 5 is smaller than the lower end size, the concave seam allowance 10 of the outer upper brick 5 is matched with the convex seam allowance 9 of the outer brick 4, wherein the convex seam allowance 9 of the outer upper brick 5 is matched with the upper end face of the outer brick 6, and the size of the top layer is 0.2 mm ~ mm.
Preferably, as shown in fig. 1, the up end of the outer middle layer brick 6 is equipped with the female spigot 10, wherein the up end also is equipped with the male spigot 9 under the outer middle layer brick 6, an end downside that outer middle layer brick 6 is close to inlayer stove core 2 also is equipped with the spread groove 12, wherein the height of spread groove 12 is the same with the thickness of core brick 8, spread groove 12 is used for being connected with core brick 8, wherein the size of expansion joint between spread groove 12 and the core brick 8 is 0.2 ~ 5mm, a plurality of outer middle layer bricks 6 are cooperated through female spigot 10 and male spigot 9 and are built into the multilayer, wherein the female spigot 10 of the outer middle layer brick 6 the superiors of multilayer cooperates with the male spigot 9 of outer upper layer brick 5, the male spigot 9 of the outer middle layer brick 6 lower floor of multilayer cooperates with outer bottom brick 7 up end, wherein the seam size between female spigot 10 and the male spigot 9 is 0.2 ~ 5 mm.
Example 8
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the outer furnace core 1 is formed by stacking an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom layer brick 7, wherein the outer layer middle layer brick 6 is stacked on the upper end surface of the outer layer bottom layer brick 7, the outer layer upper layer brick 5 is stacked on the uppermost end of the outer layer middle layer brick 6, and the outer layer top layer brick 4 is stacked on the upper end surface of the outer layer upper layer brick 5.
Preferably, as shown in fig. 1, the outer roof tiles 4 include square outer roof tiles and corner outer roof tiles, wherein the outer layer upper layer brick 5 comprises a square outer layer upper layer brick and a corner outer layer upper layer brick, the outer layer middle layer brick 6 comprises a square outer layer middle layer brick and a corner outer layer middle layer brick, wherein the outer bottom layer bricks 7 comprise square outer bottom layer bricks and corner outer bottom layer bricks, the square outer top layer bricks, the square outer upper layer bricks, the square outer middle layer bricks and the square outer bottom layer bricks are used for building four sides of the outer furnace core 1, wherein the corner outer layer top layer bricks, the corner outer layer upper layer bricks, the corner outer layer middle layer bricks and the corner outer layer bottom layer bricks are used for building four corners of the outer layer furnace core 1, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1 which is built by outer layer top layer bricks 4, outer layer upper layer bricks 5, outer layer middle layer bricks 6 and outer layer bottom layer bricks 7.
As shown in fig. 1 ~ 2, the inner layer furnace core 2 is built by core bricks 8, wherein the core bricks 8 are in a cube or cuboid structure, the core bricks 8 are laid on the inner side of the outer layer furnace core 1, and the expansion gap between two adjacent core bricks 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the lower end face of the outer-layer top tile 4 is provided with a male end 9, wherein the male end 9 of the outer-layer top tile 4 is matched with the upper end face of the outer-layer upper tile 5, the lower side of one end face of the outer-layer top tile 4 close to the inner-layer furnace core 2 is provided with a connecting groove 12, wherein the height of the connecting groove 12 is the same as the thickness of the core tile 8, the connecting groove 12 is used for connecting with the core tile 8, and the size of an expansion gap between the connecting groove 12 and the core tile 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 3 ~, the upper end face of the outer upper brick 5 is provided with a concave seam allowance 10, wherein the lower end face of the outer upper brick 5 is also provided with a convex seam allowance 9, the lower side of one end face of the outer upper brick 5, which is close to the inner furnace core 2, is also provided with a connecting groove 12, the height of the connecting groove 12 is the same as the thickness of the core brick 8, the connecting groove 12 is used for being connected with the core brick 8, the size of an expansion seam between the connecting groove 12 and the core brick 8 is 0.2 ~ mm, one end face of the outer upper brick 5, which is far away from the inner furnace core 2, is provided with an inclined plane 11, the included angle between the inclined plane 11 and the horizontal plane is 50 ~ °, the upper end size of the outer upper brick 5 is smaller than the lower end size, the concave seam allowance 10 of the outer upper brick 5 is matched with the convex seam allowance 9 of the outer brick 4, wherein the convex seam allowance 9 of the outer upper brick 5 is matched with the upper end face of the outer brick 6, and the size of the top layer is 0.2 mm ~ mm.
Preferably, as shown in fig. 1, the up end of the outer middle layer brick 6 is equipped with the female spigot 10, wherein the up end also is equipped with the male spigot 9 under the outer middle layer brick 6, an end downside that outer middle layer brick 6 is close to inlayer stove core 2 also is equipped with the spread groove 12, wherein the height of spread groove 12 is the same with the thickness of core brick 8, spread groove 12 is used for being connected with core brick 8, wherein the size of expansion joint between spread groove 12 and the core brick 8 is 0.2 ~ 5mm, a plurality of outer middle layer bricks 6 are cooperated through female spigot 10 and male spigot 9 and are built into the multilayer, wherein the female spigot 10 of the outer middle layer brick 6 the superiors of multilayer cooperates with the male spigot 9 of outer upper layer brick 5, the male spigot 9 of the outer middle layer brick 6 lower floor of multilayer cooperates with outer bottom brick 7 up end, wherein the seam size between female spigot 10 and the male spigot 9 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 5 ~ 6, the upper end face of the outer bottom brick 7 is provided with a female spigot 10, wherein the lower side of one end face of the outer bottom brick 7 close to the inner furnace core 2 is also provided with a connecting groove 12, wherein the height of the connecting groove 12 is the same as the thickness of the core brick 8, the connecting groove 12 is used for connecting with the core brick 8, wherein the size of the expansion gap between the connecting groove 12 and the core brick 8 is 0.2 ~ 5mm, and the female spigot 10 of the outer bottom brick 7 is matched with the male spigot 9 at the lowest layer of the multi-layer outer middle brick 6.
Example 9
As shown in figure 1 ~ 2, the invention discloses a square furnace core made of refractory material and used for a 2500 ℃ tungsten-molybdenum sintering furnace, which comprises an outer layer furnace core 1 and an inner layer furnace core 2 made of refractory material, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, a through vent hole 3 is arranged at the center of the inner layer furnace core 2, the cross sections of the outer layer furnace core 1 and the inner layer furnace core 2 are both square, an expansion gap is arranged between the outer layer furnace core 1 and the inner layer furnace core 2, and the range of the expansion gap is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the outer furnace core 1 is formed by stacking an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom layer brick 7, wherein the outer layer middle layer brick 6 is stacked on the upper end surface of the outer layer bottom layer brick 7, the outer layer upper layer brick 5 is stacked on the uppermost end of the outer layer middle layer brick 6, and the outer layer top layer brick 4 is stacked on the upper end surface of the outer layer upper layer brick 5.
Preferably, as shown in fig. 1, the outer roof tiles 4 include square outer roof tiles and corner outer roof tiles, wherein the outer layer upper layer brick 5 comprises a square outer layer upper layer brick and a corner outer layer upper layer brick, the outer layer middle layer brick 6 comprises a square outer layer middle layer brick and a corner outer layer middle layer brick, wherein the outer bottom layer bricks 7 comprise square outer bottom layer bricks and corner outer bottom layer bricks, the square outer top layer bricks, the square outer upper layer bricks, the square outer middle layer bricks and the square outer bottom layer bricks are used for building four sides of the outer furnace core 1, wherein the corner outer layer top layer bricks, the corner outer layer upper layer bricks, the corner outer layer middle layer bricks and the corner outer layer bottom layer bricks are used for building four corners of the outer layer furnace core 1, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1 which is built by outer layer top layer bricks 4, outer layer upper layer bricks 5, outer layer middle layer bricks 6 and outer layer bottom layer bricks 7.
As shown in fig. 1 ~ 2, the inner layer furnace core 2 is built by core bricks 8, wherein the core bricks 8 are in a cube or cuboid structure, the core bricks 8 are laid on the inner side of the outer layer furnace core 1, and the expansion gap between two adjacent core bricks 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 1, the lower end face of the outer-layer top tile 4 is provided with a male end 9, wherein the male end 9 of the outer-layer top tile 4 is matched with the upper end face of the outer-layer upper tile 5, the lower side of one end face of the outer-layer top tile 4 close to the inner-layer furnace core 2 is provided with a connecting groove 12, wherein the height of the connecting groove 12 is the same as the thickness of the core tile 8, the connecting groove 12 is used for connecting with the core tile 8, and the size of an expansion gap between the connecting groove 12 and the core tile 8 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 3 ~, the upper end face of the outer upper brick 5 is provided with a concave seam allowance 10, wherein the lower end face of the outer upper brick 5 is also provided with a convex seam allowance 9, the lower side of one end face of the outer upper brick 5, which is close to the inner furnace core 2, is also provided with a connecting groove 12, the height of the connecting groove 12 is the same as the thickness of the core brick 8, the connecting groove 12 is used for being connected with the core brick 8, the size of an expansion seam between the connecting groove 12 and the core brick 8 is 0.2 ~ mm, one end face of the outer upper brick 5, which is far away from the inner furnace core 2, is provided with an inclined plane 11, the included angle between the inclined plane 11 and the horizontal plane is 50 ~ °, the upper end size of the outer upper brick 5 is smaller than the lower end size, the concave seam allowance 10 of the outer upper brick 5 is matched with the convex seam allowance 9 of the outer brick 4, wherein the convex seam allowance 9 of the outer upper brick 5 is matched with the upper end face of the outer brick 6, and the size of the top layer is 0.2 mm ~ mm.
Preferably, as shown in fig. 1, the up end of the outer middle layer brick 6 is equipped with the female spigot 10, wherein the up end also is equipped with the male spigot 9 under the outer middle layer brick 6, an end downside that outer middle layer brick 6 is close to inlayer stove core 2 also is equipped with the spread groove 12, wherein the height of spread groove 12 is the same with the thickness of core brick 8, spread groove 12 is used for being connected with core brick 8, wherein the size of expansion joint between spread groove 12 and the core brick 8 is 0.2 ~ 5mm, a plurality of outer middle layer bricks 6 are cooperated through female spigot 10 and male spigot 9 and are built into the multilayer, wherein the female spigot 10 of the outer middle layer brick 6 the superiors of multilayer cooperates with the male spigot 9 of outer upper layer brick 5, the male spigot 9 of the outer middle layer brick 6 lower floor of multilayer cooperates with outer bottom brick 7 up end, wherein the seam size between female spigot 10 and the male spigot 9 is 0.2 ~ 5 mm.
Preferably, as shown in fig. 5 ~ 6, the upper end face of the outer bottom brick 7 is provided with a female spigot 10, wherein the lower side of one end face of the outer bottom brick 7 close to the inner furnace core 2 is also provided with a connecting groove 12, wherein the height of the connecting groove 12 is the same as the thickness of the core brick 8, the connecting groove 12 is used for connecting with the core brick 8, wherein the size of the expansion gap between the connecting groove 12 and the core brick 8 is 0.2 ~ 5mm, and the female spigot 10 of the outer bottom brick 7 is matched with the male spigot 9 at the lowest layer of the multi-layer outer middle brick 6.
Preferably, as shown in fig. 1 and 7, the weight range of each of the outer layer top brick 4, the outer layer upper brick 5, the outer layer middle brick 6, the outer layer bottom brick 7 and the core brick 8 is 5 ~ 15kg, wherein the outer layer top brick 4 and the outer layer upper brick 5 are made of zirconia and are used for high temperature resistance and support, the outer layer bottom brick 7 is made of alumina and is used for insulation and support, the part of the outer layer middle brick 6 close to the outer layer upper brick 5 is made of zirconia, the part of the outer layer middle brick 6 close to the outer layer bottom brick 7 is made of alumina, the upper half core brick 8 is made of zirconia, the lower half core brick 8 is made of alumina, the height of the square furnace core made of zirconia is greater than 200mm, the height of the square furnace core made of alumina is greater than 350mm, the length of the square furnace core is 1030mm, the width of 1230mm and the height of 600 mm 600 ~ 800mm, and the square furnace core is sleeved on the inner bottom of the square furnace lining, and the upper end face of the square furnace lining is flush with the bottom of the square bottom support.
The zirconia and the alumina are both the existing refractory materials.
The working principle of the invention is as follows:
as shown in figure 1, the invention provides a square furnace core structure for a 2500 ℃ tungsten-molybdenum sintering furnace made of refractory materials, a square crucible is used as a heating body, a square induction coil is used for induction heating, the temperature of equipment reaches 2500 ℃ and is kept by the square refractory materials, the induction coil is ensured to be used, the square refractory materials comprise a square furnace core, a square furnace lining and a top cover, the invention mainly discloses the square furnace core, the square furnace core comprises an outer layer furnace core 1 and an inner layer furnace core 2 which are made of refractory materials and mainly comprise two refractory materials of zirconium oxide and aluminum oxide, wherein the inner layer furnace core 2 is filled in the outer layer furnace core 1, all gaps are ensured to be staggered, corners of an outer layer top layer brick 4, an outer layer upper layer brick 5, an outer layer middle layer brick 6 and an outer layer bottom brick 7 are rounded, the product forming is convenient, the service life is prolonged, and the outer layer top layer brick 4, the square crucible and the, The outer layer upper layer brick 5, the outer layer middle layer brick 6 and the outer layer bottom layer brick 7 are occluded through the convex seam allowance 9 and the concave seam allowance 10, stability and reliability are guaranteed, the outer layer upper layer brick 5 cannot be affected due to temperature change during sintering, a certain gap is required to be reserved during occlusion, the outer layer middle layer brick 6 and the outer layer bottom layer brick 7 can be protected from being burnt out due to temperature change, a certain gap is required to be reserved between every two bricks when the core brick 8 is spliced, the same layer refractory materials can freely expand and contract, stress concentration among the same layer refractory materials is reduced, and the outer layer top layer brick 4 and the outer layer upper layer brick 5 cannot be affected in a high-temperature section, in order to prolong the service life of the furnace core, the weight of each furnace core brick is controlled within the range of 10-15kg, thereby not only reducing the processing difficulty of the refractory material of a single furnace core, but also prolonging the service life of the square furnace core.
As shown in figure 7, the furnace core of the invention is of a square structure, the corresponding furnace lining is also of a square structure, and the structure can enable the sintered tungsten-molybdenum plate blank product to be horizontally placed at the top of the square furnace core, wherein the top of the square furnace core is flush with the top of a bottom support of the furnace lining, so that the bending deformation of the sintered tungsten-molybdenum plate blank product is improved to the maximum extent, the straightening and leveling procedures of the tungsten-molybdenum product are greatly reduced, the production cost is reduced, and the influence of heating and pressure processing on the product quality in the shape correcting process is avoided.
The upper half part of the furnace core is made of zirconia and used for resisting high temperature and supporting, the lower half part of the furnace core is made of alumina and used for insulating and supporting, wherein the height of the square furnace core made of zirconia is larger than 200mm, the height of the square furnace core made of alumina is larger than 350mm, the service life and the utilization rate of the furnace core can be prolonged by the refractory material, the energy consumption is reduced, and the square furnace core can be used for a long time at the temperature of 2500 ℃.
The outer layer furnace core of the square furnace core is built by outer layer top layer bricks, outer layer upper layer bricks, outer layer middle layer bricks and outer layer bottom layer bricks, and the inner part of the square furnace core is filled by tiling the core bricks, wherein the outer layer top layer bricks, the outer layer upper layer bricks, the outer layer middle layer bricks and the outer layer bottom layer bricks are matched through the matching of the concave rabbet and the convex rabbet, so that the energy consumption is greatly reduced; the square furnace core and the square furnace lining are matched, so that the charging utilization rate of the furnace lining is greatly increased, the energy consumption is greatly reduced compared with a vertical round structure, the capacity is increased, and the market competitiveness of the product is effectively improved.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (9)
1. The square furnace core for the 2500 ℃ tungsten-molybdenum sintering furnace is characterized by comprising an outer layer furnace core (1) and an inner layer furnace core (2) which are made of refractory materials, wherein the inner layer furnace core (2) is filled in the outer layer furnace core (1), a through vent hole (3) is formed in the center of the inner layer furnace core (2), the cross sections of the outer layer furnace core (1) and the inner layer furnace core (2) are square, an expansion gap is formed between the outer layer furnace core (1) and the inner layer furnace core (2), and the range of the expansion gap is 0.2 ~ 5 mm.
2. The square furnace core made of refractory material for the 2500 ℃ tungsten-molybdenum sintering furnace according to claim 1, is characterized in that: outer wick (1) is built by outer top layer brick (4), outer upper brick (5), outer middle level brick (6) and outer bottom brick (7) and forms, wherein outer middle level brick of multilayer (6) build in outer bottom brick (7) up end, wherein outer upper brick (5) build in outer middle level brick of multilayer (6) top, wherein outer top layer brick (4) build in outer upper brick (5) up end.
3. The square furnace core made of refractory material for the 2500 ℃ tungsten-molybdenum sintering furnace according to claim 2, is characterized in that: the outer-layer top layer brick (4) comprises a square outer-layer top layer brick and a corner outer-layer top layer brick, wherein the outer-layer upper layer brick (5) comprises a square outer-layer upper layer brick and a corner outer-layer upper layer brick, the outer layer middle layer brick (6) comprises a square outer layer middle layer brick and a corner outer layer middle layer brick, wherein the outer bottom layer bricks (7) comprise square outer bottom layer bricks and corner outer bottom layer bricks, the square outer top layer bricks, the square outer upper layer bricks, the square outer middle layer bricks and the square outer bottom layer bricks are used for building four edges of the outer furnace core (1), wherein the corner outer layer top layer brick, the corner outer layer upper layer brick, the corner outer layer middle layer brick and the corner outer layer bottom layer brick are used for building four corners of the outer layer furnace core (1), wherein the inner layer furnace core (2) is filled in the outer layer furnace core (1) which is built by outer layer top layer bricks (4), outer layer upper layer bricks (5), outer layer middle layer bricks (6) and outer layer bottom layer bricks (7).
4. The square furnace core for the 2500 ℃ tungsten-molybdenum sintering furnace made of refractory materials is characterized in that the inner furnace core (2) is built by core bricks (8), wherein the core bricks (8) are of a cubic or rectangular structure, the core bricks (8) are flatly laid and built on the inner side of the outer furnace core (1), and the expansion gap between two adjacent core bricks (8) ranges from 0.2 ~ 5 mm.
5. The square furnace core for the 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material is characterized in that the lower end surface of the outer layer top layer brick (4) is provided with a convex spigot (9), wherein the convex spigot (9) of the outer layer top layer brick (4) is matched with the upper end surface of the outer layer upper layer brick (5), the lower side of one end surface of the outer layer top layer brick (4) close to the inner layer furnace core (2) is provided with a connecting groove (12), the height of the connecting groove (12) is the same as the thickness of the core brick (8), the connecting groove (12) is used for being connected with the core brick (8), and the size of an expansion joint between the connecting groove (12) and the core brick (8) is 0.2 ~ 5 mm.
6. The square furnace core for the 2500 ℃ tungsten-molybdenum sintering furnace made of refractory materials is characterized in that a concave spigot (10) is arranged on the upper end face of an outer layer upper layer brick (5), a convex spigot (9) is also arranged on the lower end face of the outer layer upper layer brick (5), a connecting groove (12) is also arranged on the lower side of one end face, close to an inner layer furnace core (2), of the outer layer upper layer brick (5), the height of the connecting groove (12) is the same as the thickness of the core brick (8), the connecting groove (12) is used for being connected with the core brick (8), the size of an expansion gap between the connecting groove (12) and the core brick (8) is 0.2 ~ mm, a slope (11) is arranged on one end face, far away from the inner layer furnace core (2), the included angle between the slope (11) and the horizontal plane is 50 ~ degrees, the size of the upper end of the outer layer upper layer brick (5) is smaller than that of the lower end face of the outer layer upper layer brick (5), the concave spigot (10) of the outer layer upper layer brick (5) is matched with the size of the convex spigot (9) of a top layer brick (4), and the convex spigot (5) is matched with the size of the convex spigot (2), and the size of the convex spigot (5) is 0.2).
7. The square furnace core for the 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material is characterized in that a concave spigot (10) is arranged on the upper end face of the outer middle layer brick (6), a convex spigot (9) is also arranged on the lower end face of the outer middle layer brick (6), a connecting groove (12) is also arranged on the lower side of one end face of the outer middle layer brick (6) close to the inner furnace core (2), wherein the height of the connecting groove (12) is the same as the thickness of the core brick (8), the connecting groove (12) is used for being connected with the core brick (8), the size of an expansion gap between the connecting groove (12) and the core brick (8) is 0.2 ~ mm, the outer middle layer bricks (6) are made into a plurality of layers through matching of the concave spigot (10) and the convex spigot (9), the concave spigot (10) of the outer middle layer brick (6) is matched with the convex spigot (9) of the upper layer brick (5), the concave spigot (9) of the outer middle layer brick (6) is matched with the convex spigot (7) of the bottom layer brick (84 mm, and the convex spigot (84) is matched with the convex spigot (2).
8. The square furnace core for the 2500 ℃ tungsten-molybdenum sintering furnace made of refractory materials is characterized in that a concave spigot (10) is arranged on the upper end face of the outer bottom layer brick (7), a connecting groove (12) is also arranged on the lower side of one end face, close to the inner furnace core (2), of the outer bottom layer brick (7), the height of the connecting groove (12) is the same as the thickness of the core brick (8), the connecting groove (12) is used for being connected with the core brick (8), the size of an expansion gap between the connecting groove (12) and the core brick (8) is 0.2 ~ 5mm, and the concave spigot (10) of the outer bottom layer brick (7) is matched with the convex spigot (9) of the lowest layer of the multilayer outer middle layer brick (6).
9. The square core for a 2500 ℃ tungsten-molybdenum sintering furnace made of refractory material according to claim 8, characterized in that the weight of each of said outer top bricks (4), outer top bricks (5), outer middle bricks (6), outer bottom bricks (7) and core bricks (8) is in the range of 5 ~ 15kg, wherein the outer top bricks (4) and outer top bricks (5) are made of zirconia for high temperature resistance and support, wherein the outer bottom bricks (7) are made of alumina for insulation and support, the portion of said outer middle bricks (6) near the outer top bricks (5) is made of zirconia, wherein the portion of the outer middle bricks (6) near the outer bottom bricks (7) is made of alumina, said upper half of the square core bricks (8) is made of zirconia, wherein the lower half of the square core bricks (8) is made of alumina, wherein the height of the square core made of zirconia is greater than 200mm, wherein the height of the square core made of alumina is greater than 350mm, the square core is made of alumina, the square core is a square core with a square bottom lining with a height of 600 ~ 800mm, and the square core is a square bottom lining with a bottom of 800mm, wherein the square core is flush with a bottom surface of a bottom of 800 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910976846.1A CN110671936A (en) | 2019-10-15 | 2019-10-15 | Square furnace core made of refractory material and used for 2500 ℃ tungsten-molybdenum sintering furnace |
Applications Claiming Priority (1)
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| JP2017065985A (en) * | 2015-09-30 | 2017-04-06 | Ａｇｃセラミックス株式会社 | Refractory, method for manufacturing refractory and melting furnace |
| CN210980776U (en) * | 2019-10-15 | 2020-07-10 | 西安成航炉业有限公司 | Square furnace core made of refractory material and used for 2500 ℃ tungsten-molybdenum sintering furnace |
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