CN111187900A - Novel convection plate for bell-type annealing furnace - Google Patents
Novel convection plate for bell-type annealing furnace Download PDFInfo
- Publication number
- CN111187900A CN111187900A CN202010124771.7A CN202010124771A CN111187900A CN 111187900 A CN111187900 A CN 111187900A CN 202010124771 A CN202010124771 A CN 202010124771A CN 111187900 A CN111187900 A CN 111187900A
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- CN
- China
- Prior art keywords
- plate
- lamina membranacea
- annealing furnace
- type annealing
- hood
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
- C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention relates to a novel convection plate for a hood-type annealing furnace, which is characterized in that: including annular plate, last lamina membranacea, lower lamina membranacea and welt, it is fan-shaped to go up lamina membranacea, lower lamina membranacea and welt, go up lamina membranacea equipartition respectively, symmetry set up in the upper and lower surface of annular plate, still be provided with the welt between last lamina membranacea and the lower lamina membranacea. The invention has scientific and reasonable design, solves the problem that the smaller the contact area between the convection plate and the end face of the steel coil, the larger the pressure is, reduces the possibility of pressure bonding, and avoids the press damage and pressure bonding of edges and corners to the edge of the steel coil. In addition, the guide strips are arranged between the adjacent upper leaf plates on the upper surface of the annular plate, so that the convection of the end surface of the steel coil in the production process is more uniform.
Description
Technical Field
The invention belongs to the technical field of steel rolling processing, and relates to a novel convection plate for a hood-type annealing furnace.
Background
At present, a convection plate is needed when a steel coil is annealed by adopting a hood-type annealing furnace, but when a thin-specification steel coil is produced in a whole furnace, because the edge of the steel coil is not trimmed, after strip steel is coiled in the previous process, the edge of the strip steel forms a rugged surface, and the surface of the strip steel is more easily subjected to compression deformation under the action of pressure after annealing and stacking. Because the tension of the thin strip steel is smaller than that of the thick strip steel when the thin strip steel is coiled, the surface supporting force is not as good as that of the thick strip steel, and the thinner strip steel is easier to form pressure adhesion. In addition, the tension is most unstable at the beginning of strip steel coiling in the previous process, so that the strip steel core coiling part is most likely to be pressed and adhered. The more the furnace loading position is close to the lower part, the more serious the problem of pressing and sticking is, the more the method of reducing the furnace loading amount or supporting thin materials by thick materials can be adopted to improve the finished products at present, and the influence on the yield, the cost, the leveling speed and the blowing process is larger.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the novel convection plate for the hood-type annealing furnace, solves the problem of pressure adhesion when the hood-type annealing furnace is used for annealing a thin steel coil, reduces the production cost, ensures the product quality and improves the production efficiency.
The technical problem to be solved by the invention is realized by the following technical scheme:
a novel convection plate for a hood-type annealing furnace is characterized in that: including annular plate, last lamina membranacea, lower lamina membranacea and welt, it is fan-shaped to go up lamina membranacea, lower lamina membranacea and welt, go up lamina membranacea equipartition respectively, symmetry set up in the upper and lower surface of annular plate, still be provided with the welt between last lamina membranacea and the lower lamina membranacea.
Moreover, the radial length of the upper blade plate is greater than that of the lower blade plate.
And the fan blades of the upper blade plate and the lower blade plate are the same in shape.
Moreover, the circumferential width of the lining plate is larger than the circumferential widths of the upper blade plate and the lower blade plate.
Moreover, a gap is left between the lining plate and the annular plate.
Moreover, the outer edges of the upper blade plate, the lower blade plate and the lining plate are provided with rounded corners.
And a flow guide strip is arranged between the adjacent upper leaf plates on the upper surface of the annular plate.
And the upper surface of the upper blade plate and the lower surface of the lower blade plate are provided with grinding bevel angles close to the end part of the inner circle of the annular plate.
The invention has the advantages and beneficial effects that:
1. the convection plate obviously reduces damage and pressure adhesion to the edge of the steel coil due to reasonable design of quantity, width and shape and polishing treatment of corner positions, so that the leveling yield is greatly improved, and can reach 99.24% according to experimental results.
2. The convection plate can ensure the production speed of the leveling unit and play a promoting role in reducing plate surface blowing residues; particularly, when the rolling posture is neat, the situation that the edge part is extruded and deformed to be bonded to form a dead roll or cut waste when the old convection plate is used cannot occur.
3. The convection plate can also improve the stacking quantity of a single furnace in an annealing process, and can realize independent stacking of five rolls (4 rolls of the original convection plate, the hourly output is improved, the energy consumption is saved, the scheduling is more flexible, for example, the width of 1000mm, the charging quantity of four rolls of the original convection plate is 50-65 tons, and the charging quantity of 5 rolls of the new convection plate is 65-80 tons, so that the production efficiency is improved, and the energy consumption is reduced.
4. The invention has scientific and reasonable design, solves the problem that the smaller the contact area between the convection plate and the end surface of the steel coil, the larger the pressure is, reduces the possibility of pressure bonding, and avoids the press damage and pressure bonding of edges and corners to the edge of the steel coil. In addition, the guide strips are arranged between the adjacent upper leaf plates on the upper surface of the annular plate, so that the convection of the end surface of the steel coil in the production process is more uniform.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a view taken along line A-A of FIG. 1;
FIG. 3 is a view from the B-B direction of FIG. 1;
FIG. 4 is a view from the C-C direction of FIG. 1;
fig. 5 is a schematic structural view of the lower blade plate.
Description of the reference numerals
1-annular plate, 2-lower blade plate, 3-upper blade plate, 4-lining plate, 5-first guide strip, 6-second guide strip, 7-gap, 8-fillet and 9-grinding bevel.
Detailed Description
The present invention is further illustrated by the following specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
A novel convection plate for a hood-type annealing furnace is characterized in that: including annular plate 1, last lamina membranacea 3, lamina membranacea 2 and welt 4 down, it is fan-shaped to go up lamina membranacea, lamina membranacea and welt, go up lamina membranacea equipartition respectively, symmetry set up in the upper and lower surface of annular plate, still be provided with the welt between last lamina membranacea and the lamina membranacea. The number of the upper blade plate, the lower blade plate and the lining plates is 15, and the diameter of the inner circle of the annular plate is not less than 600 mm.
The radial length of the upper blade plate is greater than the radial length of the lower blade plate.
The fan blades of the upper blade plate and the lower blade plate are the same in shape.
The circumferential width of the lining plate is greater than the circumferential widths of the upper blade plate and the lower blade plate.
A gap 7 is left between the lining plate and the annular plate.
The outer edges of the upper blade plate, the lower blade plate and the lining plate are provided with rounding off corners 8.
A first guide strip 5 and a second guide strip 6 are arranged between the adjacent upper leaf plates on the upper surface of the annular plate, so that the convection of the end surface of the steel coil in the production process is more uniform.
And grinding bevels 9 are arranged on the upper surface of the upper blade plate and the lower surface of the lower blade plate close to the end part of the inner circle of the annular plate.
The working principle of the invention is as follows:
according to the invention, through reasonable design of the number, width and shape of the convection plates, the problem that the smaller the contact area between the convection plates and the end faces of the steel coil, the larger the pressure is solved, the possibility of pressure bonding is reduced, and the phenomena of press damage and pressure bonding of edges of the steel coil by edges are avoided; in addition, the guide strips are arranged between the adjacent upper leaf plates on the upper surface of the annular plate, so that the convection of the end surface of the steel coil in the production process is more uniform.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (8)
1. A novel convection plate for a hood-type annealing furnace is characterized in that: including annular plate, last lamina membranacea, lower lamina membranacea and welt, it is fan-shaped to go up lamina membranacea, lower lamina membranacea and welt, go up lamina membranacea equipartition respectively, symmetry set up in the upper and lower surface of annular plate, still be provided with the welt between last lamina membranacea and the lower lamina membranacea.
2. The novel convection plate for a hood-type annealing furnace according to claim 1, wherein: the radial length of the upper blade plate is greater than that of the lower blade plate.
3. The novel convection plate for a hood-type annealing furnace according to claim 1, wherein: the fan blades of the upper blade plate and the lower blade plate are the same in shape.
4. The novel convection plate for a hood-type annealing furnace according to claim 1, wherein: the circumferential width of the lining plate is greater than the circumferential widths of the upper blade plate and the lower blade plate.
5. The novel convection plate for a hood-type annealing furnace according to claim 1, wherein: and a gap is reserved between the lining plate and the annular plate.
6. The novel convection plate for a hood-type annealing furnace according to claim 1, wherein: and the outer edges of the upper blade plate, the lower blade plate and the lining plate are provided with rounded corners.
7. The novel convection plate for a hood-type annealing furnace according to claim 1, wherein: and a flow guide strip is arranged between the adjacent upper leaf plates on the upper surface of the annular plate.
8. The novel convection plate for a hood-type annealing furnace according to claim 1, wherein: and grinding oblique angles are arranged on the upper surface of the upper blade plate and the lower surface of the lower blade plate close to the end part of the inner circle of the annular plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010124771.7A CN111187900A (en) | 2020-02-27 | 2020-02-27 | Novel convection plate for bell-type annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010124771.7A CN111187900A (en) | 2020-02-27 | 2020-02-27 | Novel convection plate for bell-type annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111187900A true CN111187900A (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010124771.7A Withdrawn CN111187900A (en) | 2020-02-27 | 2020-02-27 | Novel convection plate for bell-type annealing furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN111187900A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116397090A (en) * | 2023-06-05 | 2023-07-07 | 山西鑫磁科技有限公司 | Iron core heat treatment device and process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205590764U (en) * | 2016-04-27 | 2016-09-21 | 天津轧一冷轧薄板有限公司 | Convection current board |
-
2020
- 2020-02-27 CN CN202010124771.7A patent/CN111187900A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205590764U (en) * | 2016-04-27 | 2016-09-21 | 天津轧一冷轧薄板有限公司 | Convection current board |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116397090A (en) * | 2023-06-05 | 2023-07-07 | 山西鑫磁科技有限公司 | Iron core heat treatment device and process |
| CN116397090B (en) * | 2023-06-05 | 2023-08-18 | 山西鑫磁科技有限公司 | Iron core heat treatment device and process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200522 |