CN111578693A - High-cleanliness roller furnace suitable for heat treatment of silicon carbide fibers - Google Patents
High-cleanliness roller furnace suitable for heat treatment of silicon carbide fibers Download PDFInfo
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- CN111578693A CN111578693A CN202010357455.4A CN202010357455A CN111578693A CN 111578693 A CN111578693 A CN 111578693A CN 202010357455 A CN202010357455 A CN 202010357455A CN 111578693 A CN111578693 A CN 111578693A
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- cleanliness
- heat treatment
- silicon carbide
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- carbide fibers
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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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
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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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
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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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/32—Casings
- F27B9/34—Arrangements of linings
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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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
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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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B2009/305—Particular conformation of the furnace
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention discloses a high-cleanliness roller furnace suitable for silicon carbide fiber heat treatment, which comprises a furnace shell and a refractory material built layer arranged on the inner side of the furnace shell, wherein metal enclosing plates are arranged on the inner side of the refractory material built layer, the metal enclosing plates enclose a hearth, and expansion joints are arranged at two ends of the hearth. The invention has the advantages of being beneficial to improving the cleanliness in the hearth, meeting the cleanliness requirement of the silicon carbide fiber heat treatment process in a harsh environment and the like.
Description
Technical Field
The invention relates to silicon carbide fiber heat treatment equipment, in particular to a high-cleanliness roller furnace suitable for heat treatment of silicon carbide fibers.
Background
At present, continuous production equipment which is suitable for the combination of a Polycarbosilane (PCS) fiber infusible treatment process and a thermal crosslinking treatment process in a silicon carbide fiber production process is not available in China, and the fibers require a production environment with higher cleanliness, particularly no dust. The hearth of the existing roller furnace is generally built by adopting refractory materials, the refractory materials are generally light or heavy insulating bricks, ceramic fiber boards and the like, dust can be generated in the using process, or tiny particles fall off from the bricks, so that the cleanliness of materials in a sagger is influenced, and therefore, the requirements of a Polycarbosilane (PCS) fiber treatment process on the production environment cannot be met. In addition, the existing roller furnace generally adopts a single independent heating element to be arranged at the upper side and the lower side of a hearth at a certain distance, saggars are conveyed and passed by a middle bearing material, because the heating elements are spaced, the influence of air flow in the furnace is superposed, the temperature of the saggars in the hearth is not uniform, in the production process of silicon carbide fibers, when the continuous production of a non-melting treatment process and a thermal crosslinking treatment process of intermediate products, namely Polycarbosilane (PCS) fibers is carried out, the requirement on process parameters is very high, the maximum use temperature of the non-melting treatment is about 250 ℃, the maximum use temperature of the thermal crosslinking treatment is about 500 ℃, and under the condition of low temperature, the temperature uniformity of the saggars in the hearth is very difficult to reach +/-5. Further, in order to improve the temperature uniformity in the furnace of the device, the number of elements is increased due to the small distance between the heating elements, and when the number of elements is large, each heating element needs to be installed and replaced one by one, which is time-consuming.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the roller furnace which has a simple and reliable structure, is beneficial to improving the cleanliness in a hearth and meets the cleanliness requirement of a silicon carbide fiber heat treatment process in a harsh environment.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a high cleanliness roller hearth furnace suitable for carborundum fibre heat treatment, includes the stove outer covering and locates the inboard refractory material of stove outer covering and build the layer, refractory material builds the layer inboard and is equipped with the metal bounding wall, the metal bounding wall encloses and closes and form furnace, furnace's both ends are equipped with the expansion joint.
As a further improvement of the above technical solution: the expansion joint comprises an elastic folding plate and connecting flanges which are respectively arranged at two ends of the elastic folding plate, end plates are fixedly arranged at the end parts of the metal enclosing plates, and one of the connecting flanges is fixedly connected with the end plates.
As a further improvement of the above technical solution: the part of the metal enclosing plate, through which the conveying roller rod passes, is provided with a through hole, a wear-resistant ring is arranged in the through hole, and the periphery of the wear-resistant ring is provided with a dust-blocking ring.
As a further improvement of the above technical solution: the middle point of the supporting structure is welded with the middle point of the metal enclosing plate.
As a further improvement of the above technical solution: the metal enclosing plate is a 304 stainless steel plate or a 301 stainless steel plate.
As a further improvement of the above technical solution: an upper heating assembly, a lower heating assembly, an upper separation baffle and a lower separation baffle are arranged in the hearth, the upper separation baffle is arranged below the upper heating assembly, and the lower separation baffle is arranged above the lower heating assembly.
As a further improvement of the above technical solution: the lower heating assembly and the lower separation partition plate are provided with a preheating buffer layer, and the lower separation partition plate is provided with a plurality of vent holes uniformly.
As a further improvement of the above technical solution: the area of the upper heating assembly covering the upper separation partition plate and the area of the lower heating assembly covering the lower separation partition plate are not less than 85%.
As a further improvement of the above technical solution: the upper heating assembly and the lower heating assembly respectively comprise a drawer box, heating resistance wires, supporting tubes and positioning bricks, the drawer box is provided with a track, the positioning bricks are respectively arranged at two ends of the drawer box, a plurality of positioning grooves are uniformly formed in the positioning bricks, the supporting tubes are provided with a plurality of positioning grooves corresponding to the end portions one to one, and the heating resistance wires are wound on the supporting tubes.
As a further improvement of the above technical solution: the supporting tube is a corundum tube.
Compared with the prior art, the invention has the advantages that: the invention discloses a high-cleanliness roller furnace suitable for heat treatment of silicon carbide fibers, wherein metal enclosing plates are arranged on the inner side of a refractory material layer and enclose a hearth, so that the hearth and the refractory material layer can be isolated by the metal enclosing plates, dust and particles generated by the refractory material cannot enter the hearth in the use process, and the metal enclosing plates are not easy to generate dust and particles in the use process, so that higher cleanliness in the hearth can be maintained, and the harsh requirement of a heat treatment process of the silicon carbide fibers is met; furthermore, the metal coaming has more expansion after being heated, and the expansion joints are arranged at the two ends, so that the extrusion degree between the front and the rear adjacent furnace bodies can be adaptively adjusted, the phenomenon of furnace arching is avoided, and the structure is simple and reliable.
Drawings
FIG. 1 is a schematic front view of a roller furnace with high cleanliness suitable for heat treatment of silicon carbide fiber according to the present invention.
FIG. 2 is a schematic side view of a roller hearth furnace with high cleanliness for heat treatment of silicon carbide fiber according to the present invention.
Fig. 3 is an enlarged perspective view of the expansion joint of the present invention.
Fig. 4 is an enlarged schematic view of the wear-resistant ring and the dust-blocking ring of the present invention.
Fig. 5 is a schematic structural view of a lower separation separator in the present invention.
Fig. 6 is a perspective view of the heating unit according to the present invention.
The reference numerals in the figures denote: 1. an upper heating assembly; 2. a lower heating assembly; 3. an upper separation baffle; 4. a lower separation baffle; 41. a vent hole; 42. preheating a buffer layer; 5. a hearth; 6. a drawer box; 61. a track; 7. heating resistance wires; 8. supporting a tube; 9. positioning the brick; 91. positioning a groove; 10. a furnace shell; 20. building a refractory material layer; 30. a metal coaming; 301. an end plate; 302. a through hole; 303. a wear ring; 304. a dust ring; 40. an expansion joint; 401. an elastic folding plate; 402. a connecting flange; 50. conveying the roller rod; 60. a support structure; 70. and (6) blocking strips.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
Fig. 1 to 6 show an embodiment of a high-cleanliness roller bed furnace suitable for heat treatment of silicon carbide fibers according to the present invention, which includes a furnace shell 10 and a refractory material layer 20 disposed inside the furnace shell 10, wherein a metal fence 30 is disposed inside the refractory material layer 20, the metal fence 30 surrounds a hearth 5, and expansion joints 40 are disposed at two ends of the hearth 5. The refractory material course 20 may be, for example, a ceramic fiber board; for the non-melting section furnace body, the use temperature is relatively low, the metal coaming 30 can adopt a 304 stainless steel plate, for the thermal-adhesive joint section furnace body, the use temperature is relatively high, and the metal coaming 30 can adopt a 301 stainless steel plate.
According to the high-cleanliness roller furnace suitable for silicon carbide fiber heat treatment, the metal enclosing plates 30 are arranged on the inner sides of the refractory material layers 20, and the metal enclosing plates 30 enclose the hearth 5, so that the hearth 5 and the refractory material layers 20 can be isolated by the metal enclosing plates 30, dust and particles generated by the refractory material layers 20 cannot enter the hearth 5 in the use process, and the metal enclosing plates 30 are not prone to generating dust and particles in the use process, so that high cleanliness in the hearth 5 can be maintained, and the harsh requirements of a silicon carbide fiber heat treatment process are met; furthermore, the metal coaming 30 has more expansion after being heated, and the expansion joints 40 are arranged at the two ends, so that the extrusion degree between the front and the rear adjacent furnace bodies can be adaptively adjusted, the furnace arching phenomenon is avoided, and the structure is simple and reliable.
Further, in this embodiment, the expansion joint 40 includes an elastic folding plate 401 and connecting flanges 402 respectively disposed at two ends of the elastic folding plate 401, the end plate 301 is fixedly disposed at an end portion of the metal enclosing plate 30, and one of the connecting flanges 402 is fixedly connected with the end plate 301. When the metal surrounding plate 30 expands due to heating and extrudes the elastic folding plate 401, the elastic folding plate 401 can contract, and after the metal surrounding plate 30 is cooled, the elastic folding plate 401 extends to always keep the sealing connection between the front and rear furnace bodies. As the preferred technical scheme, the connecting flange 402 is provided with an inner threaded hole, the end plate 301 is provided with a round through hole, and the expansion joint 40 is connected inside the hearth 5 by using a fastener, so that the mounting difficulty of the expansion joint 40 is reduced.
Further, in this embodiment, a through hole 302 is provided at a portion of the metal enclosing plate 30 through which the conveying roller 50 passes (specifically, at the middle upper portion of the metal enclosing plates 30 on the left and right sides), a wear-resistant ring 303 is provided in the through hole 302, and a dust-blocking ring 304 is provided on the periphery of the wear-resistant ring 303. Through wear-resisting ring 303 and dust blocking ring 304, prevent that the dust from getting into in furnace 5, simple structure, reliable. The wear-resistant ring 303 and the dust-blocking ring 304 can be made of the same material as the metal enclosing plate 30, and the wear-resistant ring 303 and the dust-blocking ring are welded into a whole. Preferably, the metal enclosing plates 30 on the left and right sides are provided with the barrier strips 70, and the barrier strips 70 are higher than the working surface of the conveying roller rod 50, so that a guiding function can be provided, and the saggars can be prevented from deviating and impacting the metal enclosing plates 30 on the left and right sides.
Further, in this embodiment, the roller furnace with high cleanliness suitable for heat treatment of silicon carbide fibers further includes a supporting structure 60, and a midpoint of the supporting structure 60 is welded to a midpoint of the metal shroud 30, so that the metal shroud 30 extends from the midpoint of the furnace body to two ends when being heated and extended.
Further, in this embodiment, an upper heating assembly 1, a lower heating assembly 2, an upper separation barrier 3, and a lower separation barrier 4 are disposed in the furnace chamber 5, the upper separation barrier 3 is disposed below the upper heating assembly 1, and the lower separation barrier 4 is disposed above the lower heating assembly 2. The upper side and the lower side of a hearth 5 are respectively covered completely by an upper separation clapboard 3 and a lower separation clapboard 4, the upper separation clapboard 3 is used for separating the hearth 5 from an upper heating assembly 1, the lower separation clapboard 4 is used for separating the hearth 5 from a lower heating assembly 2, the upper heating assembly 1 and the lower heating assembly 2 do not directly heat materials in the hearth 5, the corresponding separation clapboards are firstly heated in a radiation mode, the materials in the hearth 5 are heated in a whole-plate heat transfer radiation mode after the separation clapboards are heated, the harsh technological environment requirements of silicon carbide fiber production are met, the temperature uniformity around a box bowl in the hearth 5 is smaller than or equal to +/-5 ℃ between the process use temperature of 250 ℃ and 500 ℃ in the hearth 5, and the higher the temperature is after the temperature in the hearth exceeds 500 ℃, the better the temperature uniformity in the hearth 5 is, and the integral structure is simple and reliable.
Furthermore, in the present embodiment, a preheating buffer layer 42 is disposed between the lower heating element 2 and the lower separation plate 4, and a plurality of vent holes 41 are uniformly disposed on the lower separation plate 4. The process atmosphere is fully preheated by the preheating buffer layer 42 and then uniformly dispersed into the hearth 5 through the vent holes 41 on the lower separation partition plate 4, which is beneficial to preventing the process atmosphere from influencing the temperature uniformity in the hearth 5. Preferably, the upper separation partition 3 is also uniformly provided with a plurality of vent holes 41.
As a preferable technical solution, in the present embodiment, the area of the upper heating module 1 covering the upper separation barrier 3 and the area of the lower heating module 2 covering the lower separation barrier 4 are not less than 85%.
Furthermore, in this embodiment, each of the upper heating element 1 and the lower heating element 2 includes a drawer box 6, a heating resistor wire 7, a supporting tube 8 and a positioning brick 9, the drawer box 6 is provided with a track 61, the positioning bricks 9 are respectively disposed at two ends of the drawer box 6, a plurality of positioning grooves 91 are uniformly disposed on the positioning bricks 9, the supporting tube 8 is provided with a plurality of corresponding supporting grooves 91, the ends of the supporting tubes are in one-to-one correspondence, and the heating resistor wire 7 is wound around each supporting tube 8. The drawer box 6 is matched with the rail 61, so that the modular rapid replacement of the upper heating assembly and the lower heating assembly 2 can be realized, and the efficiency is improved; set up constant head tank 91 on the locating brick 9, 8 tip of stay tube are positioned in constant head tank 91, and heating resistor silk 7 twines on stay tube 8, and overall structure is simple, the reliability is high and be convenient for maintain. In the present embodiment, the support tube 8 is a corundum tube.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a high cleanliness roller hearth furnace suitable for carborundum fibre heat treatment, includes stove outer covering (10) and locates stove outer covering (10) inboard refractory material layer (20), its characterized in that: the refractory material layer (20) inboard is equipped with metal bounding wall (30), metal bounding wall (30) enclose and close and form furnace (5), the both ends of furnace (5) are equipped with expansion joint (40).
2. The high-cleanliness roller hearth furnace suitable for heat treatment of silicon carbide fibers according to claim 1, wherein: the expansion joint (40) comprises an elastic folding plate (401) and connecting flanges (402) which are respectively arranged at two ends of the elastic folding plate (401), the end part of the metal enclosing plate (30) is fixedly provided with an end plate (301), and one of the end plate and the connecting flange (402) is fixedly connected with the end plate (301).
3. The high-cleanliness roller hearth furnace suitable for heat treatment of silicon carbide fibers according to claim 1, wherein: the part of the metal enclosing plate (30) for the conveying roller rod (50) to pass through is provided with a through hole (302), a wear-resistant ring (303) is arranged in the through hole (302), and the periphery of the wear-resistant ring (303) is provided with a dust blocking ring (304).
4. The high-cleanliness roller hearth furnace suitable for heat treatment of silicon carbide fibers according to claim 1, wherein: the metal enclosing plate further comprises a supporting structure (60), and the middle point of the supporting structure (60) is welded with the middle point of the metal enclosing plate (30).
5. The high-cleanliness roller hearth furnace suitable for heat treatment of silicon carbide fibers according to claim 1, wherein: the metal enclosing plate (30) is a 304 stainless steel plate or a 301 stainless steel plate.
6. The high-cleanliness roller hearth furnace suitable for heat treatment of silicon carbide fibers according to any one of claims 1 to 5, wherein: be equipped with heating element (1), lower heating element (2), go up separation baffle (3) and lower separation baffle (4) in furnace (5), it locates to go up separation baffle (3) go up heating element (1) below, lower separation baffle (4) are located heating element (2) top down.
7. The high-cleanliness roller hearth furnace suitable for heat treatment of silicon carbide fibers according to claim 6, wherein: a preheating buffer layer (42) is arranged between the lower heating assembly (2) and the lower separation partition plate (4), and a plurality of vent holes (41) are uniformly formed in the lower separation partition plate (4).
8. The high-cleanliness roller hearth furnace suitable for heat treatment of silicon carbide fibers according to claim 6, wherein: the area of the upper heating assembly (1) covering the upper separation partition plate (3) and the area of the lower heating assembly (2) covering the lower separation partition plate (4) are not less than 85%.
9. The high-cleanliness roller hearth furnace suitable for heat treatment of silicon carbide fibers according to claim 6, wherein: go up heating element (1) and lower heating element (2) and all include drawer box (6), heating resistor silk (7), stay tube (8) and location brick (9), drawer box (6) set track (61), location brick (9) branch is located the both ends of drawer box (6), evenly seted up a plurality of constant head tanks (91) on location brick (9), stay tube (8) are equipped with and locate a plurality ofly with just tip one-to-one locate in constant head tank (91), heating resistor silk (7) are around locating each on stay tube (8).
10. The high cleanliness roller hearth furnace for heat treatment of silicon carbide fibers according to claim 9, wherein: the supporting tube (8) is a corundum tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357455.4A CN111578693A (en) | 2020-04-29 | 2020-04-29 | High-cleanliness roller furnace suitable for heat treatment of silicon carbide fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357455.4A CN111578693A (en) | 2020-04-29 | 2020-04-29 | High-cleanliness roller furnace suitable for heat treatment of silicon carbide fibers |
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| CN111578693A true CN111578693A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010357455.4A Pending CN111578693A (en) | 2020-04-29 | 2020-04-29 | High-cleanliness roller furnace suitable for heat treatment of silicon carbide fibers |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201104095Y (en) * | 2007-10-15 | 2008-08-20 | 大连方圆复合材料轴承有限责任公司 | Composite material sintering electric furnace |
| CN103629922A (en) * | 2012-08-22 | 2014-03-12 | 上海仙佳化工有限公司 | Internal combustion type high-temperature rotary furnace |
| CN105466209A (en) * | 2015-12-30 | 2016-04-06 | 江苏和腾热工装备科技有限公司 | Heat-insulated efficient energy-saving bottom discharge vertical vacuum calcination annealing furnace for zirconia fiber boards |
| CN108328910A (en) * | 2018-04-11 | 2018-07-27 | 四川名微晶科技股份有限公司 | Microwave thermal bend kiln and the method for preparing hot bending devitrified glass using microwave heating |
| CN207793058U (en) * | 2017-12-26 | 2018-08-31 | 合肥恒力装备有限公司 | A kind of kiln chamber structure |
| CN108844369A (en) * | 2018-06-11 | 2018-11-20 | 中国电子科技集团公司第四十八研究所 | For simulating the batch-type furnace of anode material of lithium battery sintering experiment |
-
2020
- 2020-04-29 CN CN202010357455.4A patent/CN111578693A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201104095Y (en) * | 2007-10-15 | 2008-08-20 | 大连方圆复合材料轴承有限责任公司 | Composite material sintering electric furnace |
| CN103629922A (en) * | 2012-08-22 | 2014-03-12 | 上海仙佳化工有限公司 | Internal combustion type high-temperature rotary furnace |
| CN105466209A (en) * | 2015-12-30 | 2016-04-06 | 江苏和腾热工装备科技有限公司 | Heat-insulated efficient energy-saving bottom discharge vertical vacuum calcination annealing furnace for zirconia fiber boards |
| CN207793058U (en) * | 2017-12-26 | 2018-08-31 | 合肥恒力装备有限公司 | A kind of kiln chamber structure |
| CN108328910A (en) * | 2018-04-11 | 2018-07-27 | 四川名微晶科技股份有限公司 | Microwave thermal bend kiln and the method for preparing hot bending devitrified glass using microwave heating |
| CN108844369A (en) * | 2018-06-11 | 2018-11-20 | 中国电子科技集团公司第四十八研究所 | For simulating the batch-type furnace of anode material of lithium battery sintering experiment |
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Application publication date: 20200825 |