CN114136092A - Novel integrated high-temperature sintering furnace top cover and manufacturing method thereof - Google Patents
Novel integrated high-temperature sintering furnace top cover and manufacturing method thereof Download PDFInfo
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- CN114136092A CN114136092A CN202111629035.8A CN202111629035A CN114136092A CN 114136092 A CN114136092 A CN 114136092A CN 202111629035 A CN202111629035 A CN 202111629035A CN 114136092 A CN114136092 A CN 114136092A
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- material layer
- insulating material
- molybdenum
- heat
- tungsten
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- 238000005245 sintering Methods 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000011810 insulating material Substances 0.000 claims abstract description 57
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 56
- 239000011733 molybdenum Substances 0.000 claims abstract description 56
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 49
- 239000010937 tungsten Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 abstract description 11
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/16—Layered products comprising a layer of metal next to a particulate layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/30—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
-
- 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
- F27D1/18—Door frames; Doors, lids or removable covers
- F27D1/1808—Removable covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
- B32B2264/1023—Alumina
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
- B32B2264/1024—Zirconia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Powder Metallurgy (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a novel integrated high-temperature sintering furnace top cover and a manufacturing method thereof, and the novel integrated high-temperature sintering furnace top cover comprises an integrated top cover body, wherein the integrated top cover body comprises an integrally formed conical tungsten or molybdenum bottom plate, an inner layer heat insulation material layer paved on the top surface of the integrally formed conical tungsten or molybdenum bottom plate, a middle layer heat insulation material layer paved on the top surface of the inner layer heat insulation material layer, and an outer layer heat insulation material layer paved on the top surface of the middle layer heat insulation material layer, and the edge of the outer ring of the integrally formed conical tungsten or molybdenum bottom plate is fixedly provided with a hem for surrounding the inner layer heat insulation material layer, the middle layer heat insulation material layer and the outer ring of the outer layer heat insulation material layer. The invention has simple structure and lower overall cost; the heat-resistant heat-insulating material layer is thin, has no special shape requirement and is easy to maintain; the whole body adopts a hoisting structure, the use is simple and convenient, the disassembly and the assembly are easy, and the disassembly and assembly efficiency is high; the method has good universality and can be used for top cover transformation of various circular vertical sintering furnaces.
Description
The technical field is as follows:
the invention relates to the technical field of target processing, in particular to a novel integrated high-temperature sintering furnace top cover and a manufacturing method thereof.
Background art:
the existing top cover of the sintering furnace is composed of fan-shaped small blocks made of independent high-temperature materials as shown in figures 1 and 2, wherein 1 ' is an observation hole, 2 ' is an outer-layer heat-insulating layer, and 3 ' is a high-temperature inner-layer heat-insulating layer; according to actual production and equipment, the high-temperature heat-insulating lining plate is generally divided into a high-temperature lining heat-insulating layer and an outer-layer heat-insulating layer; when in production, the high-temperature inner-layer heat-insulating layer is spliced one by one, and then the outer-layer heat-insulating layer is spliced; the whole manufacturing cost is high, and the replacement period is long; the assembly efficiency in production is low; and the sintering temperature difference is large, and the assembly is carried out for many times, so that the ceramic tile is easy to damage.
The invention content is as follows:
the invention aims to provide a novel integrated high-temperature sintering furnace top cover and a manufacturing method thereof, wherein the novel integrated high-temperature sintering furnace top cover is low in manufacturing cost, easy to assemble and convenient to maintain.
The invention is realized by the following technical scheme:
the invention provides a novel integrated high-temperature sintering furnace top cover, which comprises an integrated top cover body, wherein the center of the integrated top cover body is provided with an observation hole communicated with a sintering furnace and the outside, the integrated top cover body comprises an integrated conical tungsten or molybdenum bottom plate, an inner heat-insulating material layer paved on the top surface of the integrated conical tungsten or molybdenum bottom plate, a middle heat-insulating material layer paved outside the inner heat-insulating material layer, and an outer heat-insulating material layer paved outside the middle heat-insulating material layer, and the edge of the outer ring of the integrated conical tungsten or molybdenum bottom plate is fixed with an edge enclosure used for enclosing the inner heat-insulating material layer, the middle heat-insulating material layer and the outer ring of the outer heat-insulating material layer;
the inner layer heat-insulating material layer is formed by paving zirconia hollow balls, the middle layer heat-insulating material layer is formed by paving the zirconia hollow balls, and the outer layer heat-insulating material layer is formed by paving the alumina hollow balls.
In order to ensure the paving tightness, the top surface of the integrally molded conical tungsten or molybdenum bottom plate is uniformly fixed with axial and radial protective molybdenum retaining rings used for separating the inner layer heat-insulating material layer, the middle layer heat-insulating material layer and the outer layer heat-insulating material layer into blocks.
In order to facilitate hoisting of the top cover and installation of the top cover on a sintering furnace or taking down of the top cover from the sintering furnace for maintenance, a plurality of lifting lugs are fixed at the edge of the outer ring of the integrally-formed conical tungsten or molybdenum bottom plate, and the top ends of the lifting lugs penetrate through the inner-layer heat-insulating material layer, the middle-layer heat-insulating material layer and the outer-layer heat-insulating material layer.
In order to avoid the influence of gaps at the joints of all the parts on the heat insulation performance, the joints of the integrally-formed conical tungsten or molybdenum bottom plate, the edge and the lifting lug are filled with molybdenum powder.
The invention also provides a manufacturing method of the novel integrated high-temperature sintering furnace top cover, which comprises the following steps:
(1) firstly, rolling a molybdenum blank or a tungsten blank into a square plate with proper size and thickness;
(2) cutting a square plate into a circular molybdenum plate or a circular tungsten plate with an observation hole in the middle;
(3) heating a circular molybdenum plate or a tungsten plate to a process temperature through a hydrogen heating furnace, discharging the circular molybdenum plate or the tungsten plate out of the furnace, transferring the circular molybdenum plate or the tungsten plate into a forging and pressing forming die, and then conveying the circular molybdenum plate or the tungsten plate into an oil press for hot press forming to obtain a conical tungsten or molybdenum bottom plate;
(4) mounting lifting lugs, side walls and axial and radial protective molybdenum retaining rings on the top surface of the formed conical tungsten or molybdenum bottom plate, filling molybdenum powder added with a binder into the joints after assembly and connection, putting the joints into a sintering furnace, and sintering the joints into a whole;
(5) then sequentially paving an inner layer heat-insulating material, a middle layer heat-insulating material and an outer layer heat-insulating material on the top surface of the conical tungsten or molybdenum bottom plate;
(6) and hoisting the assembled integrated high-temperature sintering furnace top cover for later use.
The invention has the beneficial effects that:
(1) the invention has simple structure and lower overall cost;
(2) the heat-resistant heat-insulating material layer is thin, has no special shape requirement and is easy to maintain;
(3) the whole body adopts a hoisting structure, the use is simple and convenient, the disassembly and the assembly are easy, and the disassembly and assembly efficiency is high;
(4) the method has good universality and can be used for top cover transformation of various circular vertical sintering furnaces.
Description of the drawings:
FIG. 1 is a top view of a prior art high temperature sintering furnace top cap;
FIG. 2 is a cross-sectional view of a prior art top cover of a high temperature sintering furnace;
FIG. 3 is a schematic perspective view of the novel integrated high-temperature sintering furnace top cover according to the present invention;
FIG. 4 is a front view of the novel integrated high temperature sintering furnace top cover of the present invention;
fig. 5 is a sectional view taken along line a-a of fig. 4.
The specific implementation mode is as follows:
the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention. The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
3-5, the novel integrated high-temperature sintering furnace top cover comprises an integrated top cover body, wherein an observation hole 1 communicating an inner cavity of a sintering furnace with the outside is formed in the center of the integrated top cover body, the integrated top cover body comprises an integrated conical tungsten or molybdenum bottom plate 5, an inner heat-insulating material layer 6 paved on the top surface of the integrated conical tungsten or molybdenum bottom plate 5, a middle heat-insulating material layer 7 paved on the top surface of the inner heat-insulating material layer 6, and an outer heat-insulating material layer 8 paved on the top surface of the middle heat-insulating material layer 7, an annular edge 2 surrounding the inner heat-insulating material layer 6, the middle heat-insulating material layer 7 and the outer heat-insulating material layer 8 is fixed at the edge of the outer ring of the integrated conical tungsten or molybdenum bottom plate 5, a plurality of lifting lugs 3 are fixed at the edge of the outer ring of the integrated conical tungsten or molybdenum bottom plate 5, and a plurality of lifting lugs 3 for uniformly fixing the inner heat-insulating material layer 6, the outer heat-insulating material layer 6 at the top surface of the integrated conical tungsten or molybdenum bottom plate 5, The middle-layer heat-insulating material layer 7 and the outer-layer heat-insulating material layer 8 are divided into blocky axial and radial protection molybdenum check rings 4, the side wall 2, the lifting lug 3 and the molybdenum check ring 4 are preferably fixed with the integrally-formed conical tungsten or molybdenum bottom plate 5 in a welding mode, and molybdenum powder added with a binder is filled at the joint.
Wherein, integral type shaping toper tungsten or molybdenum bottom plate 5 can be able to bear or endure 2200 degrees high temperatures, inlayer insulation material layer 6 adopts the zirconia hollow ball foreshadowing to form, middle level insulation material layer adopts the zirconia hollow ball foreshadowing to form, outer insulation material layer adopts the alumina hollow ball foreshadowing to form, and its whole heat preservation and thermal insulation effect is better. Furthermore, the zirconia hollow ball or the alumina hollow ball can be replaced by zirconia or alumina broken bricks or chips.
The manufacturing method of the novel integrated high-temperature sintering furnace top cover comprises the following steps:
(1) firstly, rolling a molybdenum blank or a tungsten blank into a square plate with proper size and thickness;
(2) cutting a square plate into a circular molybdenum plate or a circular tungsten plate with an observation hole in the middle;
(3) heating a circular molybdenum plate or a tungsten plate to a process temperature through a hydrogen heating furnace, discharging the circular molybdenum plate or the tungsten plate out of the furnace, transferring the circular molybdenum plate or the tungsten plate into a forging and pressing forming die, and then conveying the circular molybdenum plate or the tungsten plate into an oil press for hot press forming to obtain a conical tungsten or molybdenum bottom plate;
(4) mounting lifting lugs, side walls and axial and radial protective molybdenum retaining rings on the top surface of the formed conical tungsten or molybdenum bottom plate, filling molybdenum powder added with a binder into the joints after assembly and connection, putting the joints into a sintering furnace, and sintering the joints into a whole;
(5) then sequentially paving an inner layer heat-insulating material, a middle layer heat-insulating material and an outer layer heat-insulating material on the top surface of the conical tungsten or molybdenum bottom plate;
(6) and hoisting the assembled integrated high-temperature sintering furnace top cover for later use.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The utility model provides a novel integral type high temperature sintering furnace top cap which characterized in that: the integrated top cover comprises an integrated top cover body, wherein an observation hole communicated with a sintering furnace and the outside is formed in the center of the integrated top cover body, the integrated top cover body comprises an integrated conical tungsten or molybdenum bottom plate, an inner heat-insulating material layer paved on the top surface of the integrated conical tungsten or molybdenum bottom plate, a middle heat-insulating material layer paved on the top surface of the inner heat-insulating material layer, and an outer heat-insulating material layer paved on the top surface of the middle heat-insulating material layer, and edges surrounding the inner heat-insulating material layer, the middle heat-insulating material layer and the outer heat-insulating material layer are fixed at the edge of the outer ring of the integrated conical tungsten or molybdenum bottom plate;
the inner layer heat-insulating material layer is formed by paving zirconia hollow balls, the middle layer heat-insulating material layer is formed by paving the zirconia hollow balls, and the outer layer heat-insulating material layer is formed by paving the alumina hollow balls.
2. The novel integrated high-temperature sintering furnace top cover according to claim 1, characterized in that: and the top surface of the integrally molded conical tungsten or molybdenum bottom plate is uniformly and fixedly provided with axial and radial protective molybdenum retaining rings used for separating the inner layer heat-insulating material layer, the middle layer heat-insulating material layer and the outer layer heat-insulating material layer into blocks.
3. The novel integrated high-temperature sintering furnace top cover according to claim 1, characterized in that: a plurality of lifting lugs are fixed at the edge of the outer ring of the integrally-formed conical tungsten or molybdenum bottom plate, and the top ends of the lifting lugs penetrate through the inner-layer heat-insulating material layer, the middle-layer heat-insulating material layer and the outer-layer heat-insulating material layer.
4. The novel integrated high-temperature sintering furnace top cover according to claim 3, characterized in that: and the joints of the integrally molded conical tungsten or molybdenum bottom plate, the edge margins and the lifting lugs are filled with molybdenum powder.
5. The method for manufacturing the novel integrated high-temperature sintering furnace top cover as claimed in any one of claims 1 to 4, characterized by comprising the following steps:
(1) firstly, rolling a molybdenum blank or a tungsten blank into a square plate with proper size and thickness;
(2) cutting a square plate into a circular molybdenum plate or a circular tungsten plate with an observation hole in the middle;
(3) heating a circular molybdenum plate or a tungsten plate to a process temperature through a hydrogen heating furnace, discharging the circular molybdenum plate or the tungsten plate out of the furnace, transferring the circular molybdenum plate or the tungsten plate into a forging and pressing forming die, and then conveying the circular molybdenum plate or the tungsten plate into an oil press for hot press forming to obtain a conical tungsten or molybdenum bottom plate;
(4) mounting lifting lugs, side walls and axial and radial protective molybdenum retaining rings on the top surface of the formed conical tungsten or molybdenum bottom plate, filling molybdenum powder added with a binder into the joints after assembly and connection, putting the joints into a sintering furnace, and sintering the joints into a whole;
(5) then sequentially paving an inner layer heat-insulating material, a middle layer heat-insulating material and an outer layer heat-insulating material on the top surface of the conical tungsten or molybdenum bottom plate;
(6) and hoisting the assembled integrated high-temperature sintering furnace top cover for later use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111629035.8A CN114136092A (en) | 2021-12-28 | 2021-12-28 | Novel integrated high-temperature sintering furnace top cover and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111629035.8A CN114136092A (en) | 2021-12-28 | 2021-12-28 | Novel integrated high-temperature sintering furnace top cover and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114136092A true CN114136092A (en) | 2022-03-04 |
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| CN202111629035.8A Pending CN114136092A (en) | 2021-12-28 | 2021-12-28 | Novel integrated high-temperature sintering furnace top cover and manufacturing method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203037070U (en) * | 2012-11-23 | 2013-07-03 | 中钢集团洛阳耐火材料研究院有限公司 | Furnace liner structure of top cover of tungsten molybdenum sintering furnace |
| CN105135883A (en) * | 2015-08-27 | 2015-12-09 | 北京矿冶研究总院 | Intermediate frequency furnace high temperature sintering is with thermal-insulated frock |
| CN207865966U (en) * | 2017-11-11 | 2018-09-14 | 郑州方铭高温陶瓷新材料有限公司 | Metal molybdenum smelting furnace closure insulation |
| CN218296714U (en) * | 2021-12-28 | 2023-01-13 | 常州苏晶电子材料有限公司 | Novel integral type high temperature fritting furnace top cap |
-
2021
- 2021-12-28 CN CN202111629035.8A patent/CN114136092A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203037070U (en) * | 2012-11-23 | 2013-07-03 | 中钢集团洛阳耐火材料研究院有限公司 | Furnace liner structure of top cover of tungsten molybdenum sintering furnace |
| CN105135883A (en) * | 2015-08-27 | 2015-12-09 | 北京矿冶研究总院 | Intermediate frequency furnace high temperature sintering is with thermal-insulated frock |
| CN207865966U (en) * | 2017-11-11 | 2018-09-14 | 郑州方铭高温陶瓷新材料有限公司 | Metal molybdenum smelting furnace closure insulation |
| CN218296714U (en) * | 2021-12-28 | 2023-01-13 | 常州苏晶电子材料有限公司 | Novel integral type high temperature fritting furnace top cap |
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