CN109539797B - Non-water cooling cantilever roller in furnace - Google Patents
Non-water cooling cantilever roller in furnace Download PDFInfo
- Publication number
- CN109539797B CN109539797B CN201811601980.5A CN201811601980A CN109539797B CN 109539797 B CN109539797 B CN 109539797B CN 201811601980 A CN201811601980 A CN 201811601980A CN 109539797 B CN109539797 B CN 109539797B
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- furnace
- roller
- section
- cavity
- roller shaft
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- 238000001816 cooling Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 7
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 9
- 230000009970 fire resistant effect Effects 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- F27D5/00—Supports, screens, or the like for the charge within the furnace
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/007—Cooling of charges therein
- F27D2009/0081—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)
- F27D2009/0083—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge) the fluid being water
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention provides an in-furnace water-free cooling cantilever roller, which comprises a furnace roller and a roller shaft, wherein a first end of the furnace roller is positioned in a furnace, a second end of the furnace roller penetrates through a furnace wall and extends out of the furnace to be connected with the first end of the roller shaft, the interior of the furnace roller is separated to form a first cavity and a second cavity, the first cavity is positioned in the furnace, the second cavity extends out of the furnace from a position close to the inner surface of the furnace wall, and a fireproof heat insulation element is filled in the second cavity. The furnace roller and the roller shaft are connected outside the furnace, and compared with the condition that the furnace roller and the shaft are connected in the furnace in the prior art, the temperature of the roller shaft can be greatly reduced, so that the strength of the roller shaft is ensured; meanwhile, the first cavity and the second cavity are formed by separating the inside of the furnace roller, and the fireproof heat insulation element is arranged in the second cavity extending from the inner side surface of the furnace wall to the outside of the furnace, so that the temperature in the furnace can be effectively prevented from being transferred to the outside of the furnace through the furnace roller, the transfer of heat in the furnace to the roller shaft is further reduced, and the heat loss in the furnace is reduced while the temperature rise of the roller shaft is avoided.
Description
Technical Field
The invention relates to an in-furnace cantilever roller way in the metallurgical industry, in particular to an in-furnace non-water cooling cantilever roller.
Background
In-furnace cantilever rolls used in the current industrial furnaces are mostly roll surface cooling cantilever rolls and roll shaft cooling cantilever rolls. The first end of axle is together stretched into to the stove with stove roller cover, and the second end of axle is connected outside the stove with the bearing box and drives stove roller through motor drive and rotate, wherein, for guaranteeing the intensity of axle, need the counter shaft to cool off, the cooling method that above-mentioned two kinds of cantilever rollers adopted all sets up condenser tube in the inside of axle, lets in the condenser tube through condenser tube to the inside of axle to reach the counter shaft and cool down, with the effect of guaranteeing the intensity of axle.
However, the cantilever rollers in the two furnaces are cooled by water, heat is carried away from the furnaces, a low-temperature area is formed around the furnace rollers, so that temperature deviation can be caused in the length direction of a billet due to uneven heating of the billet in a period of time before discharging and feeding the billet into a roller way, the quality of products is affected, and meanwhile, the energy consumption of the heating furnace is increased. In particular, for heat treatment furnaces (quenching, normalizing and tempering treatment) for steel pipes, the temperature of the heat treatment for steel pipes is about 1000 ℃ or lower, and there is a very high requirement for the uniformity of the temperature of the steel pipes, the quenching requirement being within plus or minus 5 ℃. Quenching is required to be within plus or minus 3 ℃. Therefore, along with the progress of technology, the requirement of energy saving and the requirement of continuously improving the product quality, how to ensure the strength of the shaft and the temperature of the furnace roller becomes a problem to be solved by the technicians in the field.
Disclosure of Invention
The invention aims to provide a water-free cantilever roller in a furnace, which can achieve the effects of ensuring the strength of a roller shaft, ensuring the temperature of a part of the furnace roller positioned in the furnace and reducing heat loss in the furnace.
In order to achieve the above purpose, the invention provides an in-furnace water-free cooling cantilever roller, wherein the in-furnace water-free cooling cantilever roller comprises a furnace roller and a roller shaft, a first end of the furnace roller is positioned in a furnace, a second end of the furnace roller penetrates through a furnace wall to extend out of the furnace to be connected with the first end of the roller shaft, the interior of the furnace roller is separated to form a first cavity and a second cavity, the first cavity is positioned in the furnace, the second cavity extends to the outside of the furnace from a position close to the inner surface of the furnace wall, and a fireproof heat insulation element is filled in the second cavity.
The water-free cantilever roller in the furnace comprises a first section, a second section, a third section, a fourth section and a fifth section which are sequentially connected along the direction from the first end of the furnace roller to the second end of the furnace roller, wherein the first cavity is formed by the inside of the first section, the inside of the second section and the inside of the third section, the second cavity is formed by the inside of the fourth section, and the fifth section is detachably connected with the first end of the roller shaft.
The water-free cantilever roller in the furnace, wherein the first section is a cone with gradually reduced diameter, the second section is a cone with gradually increased diameter, the third section is a straight cylinder with unchanged diameter, the fourth section is a cone with gradually reduced diameter and the fifth section is a straight cylinder with unchanged diameter along the direction from the first end of the furnace roller to the second end of the furnace roller.
The furnace water-free cooling cantilever roller is characterized in that the two ends of the fourth section are respectively provided with the detachable partition plates, the two partition plates and the inner wall of the fourth section are enclosed to form the second cavity, and the fireproof heat-insulating element is respectively connected with the two partition plates in a detachable mode.
The in-furnace water-free cooling cantilever roller as described above, wherein the refractory and heat-insulating element comprises a refractory fiber blanket and a retainer, the retainer is disposed inside the second cavity along the axis of the furnace roller, and the refractory fiber blanket is wound on the retainer and fills the second cavity.
The furnace water-free cantilever roller is characterized in that the first end of the furnace roller is detachably provided with the end cover, and a plurality of through holes extending along the axial direction of the furnace roller are formed in the end cover.
The water-free cantilever roller in the furnace is of a tubular structure with a hollow inside, and a plurality of radiating holes extending radially are formed in the side wall of the roller.
The water-free cantilever roller in the furnace, as described above, wherein the roller shaft is rotatably connected with a bearing box, and the second end of the roller shaft is connected with a driving motor.
Compared with the prior art, the invention has the following advantages:
According to the non-water cooling cantilever roller in the furnace, the furnace roller and the roller shaft are connected outside the furnace, and compared with the condition that the furnace roller and the shaft are connected in the furnace in the prior art, the temperature of the roller shaft can be greatly reduced, so that the strength of the roller shaft is ensured; meanwhile, the first cavity and the second cavity are formed by separating the inside of the furnace roller, and the fireproof heat insulation element is arranged in the second cavity extending from the inner side surface of the furnace wall to the outside of the furnace, so that the temperature in the furnace can be effectively prevented from being transferred to the outside of the furnace through the furnace roller, the transfer of heat in the furnace to the roller shaft is further reduced, and the heat loss in the furnace is reduced while the temperature rise of the roller shaft is avoided.
Drawings
The following drawings are only for purposes of illustration and explanation of the present invention and are not intended to limit the scope of the invention. Wherein:
FIG. 1 is a schematic view of the structure of an in-furnace water-free cooled cantilever roller provided by the invention;
FIG. 2 is a schematic cross-sectional view of an in-furnace water-free chilled cantilever roll provided by the invention;
FIG. 3 is a schematic cross-sectional view of a furnace roller without a water-cooled cantilever roller in the furnace according to the present invention.
Reference numerals illustrate:
1. A furnace roller;
11. a first cavity;
12. a second cavity;
121. a partition plate;
13. a first section;
131. an end cap;
1311. A through hole;
14. a second section;
15. a third section;
16. a fourth section;
17. a fifth section;
2. A roll shaft;
21. a heat radiation hole;
3. a refractory and heat insulating element;
31. a retainer;
32. A fire resistant fibrous blanket;
4. A bearing housing;
5. A driving motor;
6. Furnace wall
Detailed Description
For a clearer understanding of the technical solutions, objects and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1 to 3, the invention provides an in-furnace water-free cantilever roller, wherein the in-furnace water-free cantilever roller comprises a furnace roller 1 and a roller shaft 2, a first end of the furnace roller 1 is positioned in a furnace, and a second end of the furnace roller 1 extends out of the furnace through a furnace wall 6 to be connected with the first end of the roller shaft 2, so that the furnace roller 1 is connected with the roller shaft 2 outside the furnace, and compared with the arrangement mode that a central shaft extends into the furnace and is connected with the furnace roller 1 in the prior art, the roller shaft 2 can be always in a room temperature environment, the temperature of the roller shaft 2 is effectively reduced, and the strength of the roller shaft 2 is ensured; the inside of furnace roller 1 separates and forms first cavity 11 and second cavity 12, and first cavity 11 is located the stove, and second cavity 12 extends to the stove outside by the position that is close to the internal surface of furnace wall 6, and refractory and heat insulating element 3 has been packed to the inside of second cavity 12, through setting up refractory and heat insulating element 3 in second cavity 12, can effectively keep apart the heat in the stove, reduces and even avoids the heat in the stove to pass through furnace roller 1 to the transmission outside the stove, still further guarantees the temperature and the intensity of roller 2, has reduced the loss of heat in the stove simultaneously.
Further, as shown in fig. 1 to 3, the present invention provides an in-furnace water-cooling-free cantilever roller, wherein, along the direction from the first end of the furnace roller 1 to the second end of the furnace roller 1, the furnace roller 1 includes a first section 13, a second section 14, a third section 15, a fourth section 16 and a fifth section 17 which are sequentially connected, the inside of the first section 13, the inside of the second section 14 and the inside of the third section 15 form a first cavity 11, the inside of the fourth section 16 forms a second cavity 12, and the fifth section 17 is detachably connected with the first end of the roller shaft 2; it should be noted that, the specific structure of the furnace roller 1 without the water cooling cantilever roller in the furnace provided by the invention includes only the number of sections in the preferred embodiment of the invention, and those skilled in the art can set the number of sections to other values, so long as the requirements of the invention, that is, the requirements of processing in the furnace and connecting the furnace outer side with the roller shaft 2, can be met, and the invention is not limited thereto.
Still further, as shown in fig. 1 to 3, the present invention provides an in-furnace water-cooling cantilever roller, wherein, along the direction from the first end of the furnace roller 1 to the second end of the furnace roller 1, the first section 13 is a tapered cylinder with gradually reduced diameter, the second section 14 is a tapered cylinder with gradually increased diameter, the third section 15 is a straight cylinder with constant diameter, the fourth section 16 is a tapered cylinder with gradually reduced diameter and the fifth section 17 is a straight cylinder with constant diameter, the first section 13 and the second section 14 form a V-shaped or arc-shaped roller surface together to support and position steel in the furnace, the third section 15 is a transition section between the second section 14 and the fourth section 16 for connecting the part of the furnace roller 1 located in the furnace with the part located outside the furnace, the fourth section 16 is a thermal barrier section for forming the second cavity 12 to accommodate the refractory heat insulation element 3, preventing heat in the furnace from being transferred outside the furnace, and the fifth section 17 is also a transition section for connecting the furnace roller 1 with the roller shaft 2.
The fourth section 16 is a tapered cylinder with a diameter gradually reduced from the first end of the furnace roller 1 to the second end of the furnace roller 1, so that the hole in the furnace wall 6 for installing the fourth section 16 is a tapered hole with a diameter gradually reduced along the direction from the inside of the furnace to the outside of the furnace, that is, the inner wall of the tapered hole has a trend towards the inside of the furnace, when the radiant heat in the furnace is conducted onto the inner wall of the tapered hole, the inner wall of the tapered hole can refract and reflect the heat, and the outward diffusion of the heat is reduced, thereby reducing the loss of the heat in the furnace.
Further, as shown in fig. 2 and 3, the water-cooling-free cantilever roller in a furnace provided by the invention, wherein the two ends of the fourth section 16 are respectively provided with a detachable partition plate 121, the two partition plates 121 and the inner wall of the fourth section 16 enclose to form a second cavity 12, and the fire-resistant heat-insulating element 3 is respectively detachably connected with the two partition plates 121. The two partition plates 121 are provided for the purpose of mounting the fire-resistant heat insulating element 3 and also for a certain heat-resistant barrier.
As shown in fig. 2 and 3, the water-cooled cantilever roller in a furnace provided by the invention is preferable, wherein the refractory and heat-insulating element 3 comprises a refractory fiber blanket 32 and a retainer 31, the retainer 31 is arranged inside the second cavity 12 along the axis of the furnace roller 1, simply, the retainer 31 may be a cross rod, two ends of the cross rod are respectively connected with two partition plates 121, the refractory fiber blanket 32 is wound on the retainer 31 and fills the second cavity 12, it should be noted that the retainer 31 and the refractory fiber blanket 32 are adopted as the refractory and heat-insulating element 3 only in the preferred embodiment of the invention, a plurality of refractory fiber gaskets are also adopted to be overlapped along the axial direction of the furnace roller 1 to form the refractory and heat-insulating element 3, or other refractory fiber blocks with other shapes can be adopted to fill the second cavity 12 as the refractory and heat-insulating element 3, and the invention is not limited thereto.
As shown in fig. 2 and 3, the water-cooled cantilever roller in a furnace provided by the invention is preferable, wherein an end cover 131 is detachably arranged at a first end of the furnace roller 1, a plurality of through holes 1311 extending along the axial direction of the furnace roller 1 are formed in the end cover 131, the through holes 1311 are used for communicating the first cavity 11 with the furnace, and radiant heat in the furnace can enter the first cavity 11 through the through holes 1311, so that the temperature inside and outside a roller surface corresponding to the first cavity 11 is balanced.
Preferably, as shown in fig. 2, the water-free cantilever roller in the furnace provided by the invention has the advantages that the roller shaft 2 is of a hollow tubular structure, the side wall of the roller shaft 2 is provided with a plurality of radiating holes 21 extending radially, so that the ventilation of the inner side and the outer side of the roller shaft 2 is ensured, the temperature of the roller shaft 2 is further reduced, and the strength of the roller shaft 2 is ensured.
Further, as shown in fig. 1, the present invention provides an in-furnace water-free cantilever roller, wherein a roller shaft 2 is rotatably connected with a bearing box 4, the bearing box 4 is used for supporting the roller shaft 2, a second end of the roller shaft 2 is connected with a driving motor 5, and the driving motor 5 is used for driving the roller shaft 2 to drive the furnace roller 1 to rotate.
Compared with the prior art, the invention has the following advantages:
According to the non-water cooling cantilever roller in the furnace, the furnace roller and the roller shaft are connected outside the furnace, and compared with the condition that the furnace roller and the shaft are connected in the furnace in the prior art, the temperature of the roller shaft can be greatly reduced, so that the strength of the roller shaft is ensured; meanwhile, the first cavity and the second cavity are formed by separating the inside of the furnace roller, and the fireproof heat insulation element is arranged in the second cavity extending from the inner side surface of the furnace wall to the outside of the furnace, so that the temperature in the furnace can be effectively prevented from being transferred to the outside of the furnace through the furnace roller, the transfer of heat in the furnace to the roller shaft is further reduced, and the heat loss in the furnace is reduced while the temperature rise of the roller shaft is avoided.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this invention, and are intended to be within the scope of this invention.
Claims (6)
1. The water-free cooling cantilever roller in the furnace is characterized by comprising a furnace roller and a roller shaft, wherein a first end of the furnace roller is positioned in the furnace, a second end of the furnace roller penetrates through a furnace wall and extends out of the furnace to be connected with the first end of the roller shaft, a first cavity and a second cavity are formed by internal separation of the furnace roller, the first cavity is positioned in the furnace, the second cavity extends to the outside of the furnace from a position close to the inner surface of the furnace wall, and a fireproof heat insulation element is filled in the second cavity;
The furnace roller comprises a thermal barrier section with the diameter gradually shrinking from the inside of the furnace to the outside of the furnace;
the two ends of the thermal barrier section are respectively provided with a detachable partition plate, the two partition plates and the inner wall of the thermal barrier section are enclosed to form the second cavity, and the fire-resistant heat insulation element is respectively connected with the two partition plates in a detachable manner;
The fire-resistant heat-insulating element comprises a fire-resistant fiber blanket and a retainer, the retainer is arranged in the second cavity along the axis of the furnace roller, the retainer is a cross rod, two ends of the cross rod are respectively connected with two partition plates, and the fire-resistant fiber blanket is wound on the retainer and fills the second cavity.
2. The in-furnace water-free cantilever roll according to claim 1, wherein the furnace roll comprises a first section, a second section, a third section, the thermal barrier section and a fifth section connected in sequence along a direction from a first end of the furnace roll to a second end of the furnace roll, wherein the interior of the first section, the interior of the second section and the interior of the third section constitute the first cavity, and wherein the fifth section is removably connected to the first end of the roll shaft.
3. The in-furnace water-free cantilever roll according to claim 2, wherein the first section is a tapered cylinder of gradually decreasing diameter, the second section is a tapered cylinder of gradually increasing diameter, the third section is a straight cylinder of constant diameter, and the fifth section is a straight cylinder of constant diameter, in a direction from the first end of the furnace roll to the second end of the furnace roll.
4. A water-cooled free cantilever roll in a furnace according to any one of claims 1 to 3, wherein the first end of the furnace roller is detachably provided with an end cover, and the end cover is provided with a plurality of through holes extending along the axial direction of the furnace roller.
5. A water-free cantilever roller in a furnace according to any one of claims 1 to 3, wherein the roller shaft is of a tubular structure with a hollow interior, and a plurality of heat dissipation holes extending radially are formed in the side wall of the roller shaft.
6. A water-cooled cantilever roller in a furnace according to any one of claims 1 to 3, wherein the roller shaft is rotatably connected to a bearing housing and the second end of the roller shaft is connected to a drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811601980.5A CN109539797B (en) | 2018-12-26 | 2018-12-26 | Non-water cooling cantilever roller in furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811601980.5A CN109539797B (en) | 2018-12-26 | 2018-12-26 | Non-water cooling cantilever roller in furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109539797A CN109539797A (en) | 2019-03-29 |
| CN109539797B true CN109539797B (en) | 2024-05-14 |
Family
ID=65858357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811601980.5A Active CN109539797B (en) | 2018-12-26 | 2018-12-26 | Non-water cooling cantilever roller in furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN109539797B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102983B (en) * | 2019-06-01 | 2023-12-22 | 浙江明贺钢管有限公司 | High-temperature-resistant dry cantilever roller and preparation process thereof |
| CN113621775B (en) * | 2021-08-13 | 2023-08-15 | 浙江鸿达炉业科技有限公司 | Energy-saving roller hearth furnace |
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| CN201476579U (en) * | 2009-08-31 | 2010-05-19 | 浦杰 | Furnace roller with novel structure |
| CN201704374U (en) * | 2010-05-20 | 2011-01-12 | 北京京诚凤凰工业炉工程技术有限公司 | Cooling-free furnace roller device |
| JP2012207245A (en) * | 2011-03-29 | 2012-10-25 | Kyushu Institute Of Technology | Roller for use in heating furnace |
| CN102889786A (en) * | 2012-11-07 | 2013-01-23 | 何学才 | Cantilever roller bed used inside stepping heating furnace |
| CN203132337U (en) * | 2013-03-04 | 2013-08-14 | 中国兵器工业新技术推广研究所 | Furnace roller of roller bottom type thermal treatment furnace with internal heat insulation device |
| CN203904393U (en) * | 2014-06-16 | 2014-10-29 | 中冶京诚(扬州)冶金科技产业有限公司 | Water-cooling-free deformation-resistant furnace roller |
| CN209326369U (en) * | 2018-12-26 | 2019-08-30 | 北京京诚凤凰工业炉工程技术有限公司 | Non-water-cooled overhang roll in furnace |
-
2018
- 2018-12-26 CN CN201811601980.5A patent/CN109539797B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476579U (en) * | 2009-08-31 | 2010-05-19 | 浦杰 | Furnace roller with novel structure |
| CN201704374U (en) * | 2010-05-20 | 2011-01-12 | 北京京诚凤凰工业炉工程技术有限公司 | Cooling-free furnace roller device |
| JP2012207245A (en) * | 2011-03-29 | 2012-10-25 | Kyushu Institute Of Technology | Roller for use in heating furnace |
| CN102889786A (en) * | 2012-11-07 | 2013-01-23 | 何学才 | Cantilever roller bed used inside stepping heating furnace |
| CN203132337U (en) * | 2013-03-04 | 2013-08-14 | 中国兵器工业新技术推广研究所 | Furnace roller of roller bottom type thermal treatment furnace with internal heat insulation device |
| CN203904393U (en) * | 2014-06-16 | 2014-10-29 | 中冶京诚(扬州)冶金科技产业有限公司 | Water-cooling-free deformation-resistant furnace roller |
| CN209326369U (en) * | 2018-12-26 | 2019-08-30 | 北京京诚凤凰工业炉工程技术有限公司 | Non-water-cooled overhang roll in furnace |
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| CN109539797A (en) | 2019-03-29 |
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