CN110586667A - Forced cooling device for cooling bed and cooling bed adopting same - Google Patents
Forced cooling device for cooling bed and cooling bed adopting same Download PDFInfo
- Publication number
- CN110586667A CN110586667A CN201910827920.3A CN201910827920A CN110586667A CN 110586667 A CN110586667 A CN 110586667A CN 201910827920 A CN201910827920 A CN 201910827920A CN 110586667 A CN110586667 A CN 110586667A
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- air
- cooling
- straightening plate
- cooling bed
- bed
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- 238000001816 cooling Methods 0.000 title claims abstract description 116
- 229910000831 Steel Inorganic materials 0.000 abstract description 38
- 239000010959 steel Substances 0.000 abstract description 38
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 3
- 230000034655 secondary growth Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention relates to a forced cooling device of a cooling bed and the cooling bed adopting the forced cooling device. This cooling bed forced cooling device includes the leveling board, and the leveling board is the fretwork leveling board, is equipped with a plurality of cooling unit in fretwork leveling board below, and the cooling unit includes: air supply arrangement, wind channel, plenum and wind area. The forced cooling device of the cooling bed effectively avoids the secondary growth of steel grains, and the performance of the steel is improved by about 20 MPa; after the cooling bed forced cooling device is started, the straightening plate and the stepping rack of the cooling bed are effectively cooled, so that the thermal expansion deformation of the straightening plate and the stepping rack is favorably reduced, and the flatness of steel is improved; the shearing quality of the steel is improved due to the reduction of the temperature of the lower cooling bed of the steel.
Description
Technical Field
The invention relates to a forced cooling device of a cooling bed and the cooling bed adopting the forced cooling device.
Background
The cooling bed is a stepping rack structure, the input side is steel feeding in a skirt plate mode, after the steel enters the skirt plate, the steel is connected at a low position and slides at a middle position or directly rises to a high position, and then slides to a straightening plate for natural cooling, at present, the cooling process of the straightening plate mainly has the following defects:
the steel is naturally cooled on a cooling bed straightening plate at 850-plus-950 ℃, effective cooling means is not adopted subsequently, large-size steel is cooled only by natural cooling, the speed is slow, the subsequent tempering temperature is high, the structure crystal grains are tempered and grown, and the crystal grain size of the steel is coarsened, so that the performance is reduced; in addition, the straightening plate and the rack are in a high-temperature hot expansion state for a long time and are easy to deform, so that the steel is bent and deformed, particularly, the cooling speed of a large specification is too low, so that an elbow or burr appears during cold shearing, and quality complaints are generated.
Disclosure of Invention
The invention provides a forced cooling device of a cooling bed and the cooling bed adopting the device in order to make up for the defects of the prior art, and solves the problems in the prior art.
The invention is realized by the following technical scheme:
the utility model provides a cold bed forced cooling device, includes the leveling board, the leveling board is the fretwork leveling board, is equipped with a plurality of cooling unit in fretwork leveling board below, cooling unit includes: the air supply device, the air duct, the air chamber and the air belt;
the inlet of the air duct is connected with the air supply device, and the outlet of the air duct is connected with the inlet of the air chamber; the outlet of the air chamber is connected with a plurality of air belts which are longitudinally arranged in parallel; the outlet of the wind belt is arranged close to the bottom surface of the hollow straightening plate;
and an air volume adjusting valve is arranged on the air duct and used for adjusting the air volume, the air pressure and the air direction in the air duct.
The hollow straightening plate is a plurality of through holes which are regularly or irregularly distributed on the plate surface of the straightening plate and are arranged in a penetrating way from top to bottom; the cooling unit comprises a plurality of groups which are arranged below the hollowed-out straightening plate and are uniformly arranged along the longitudinal direction of the cooling bed at intervals.
The hollow straightening plate is a plurality of through holes which are regularly distributed on the surface of the straightening plate and are arranged in a penetrating way up and down. The through holes are rectangular through holes which are uniformly and alternately arranged on the surface of the straightening plate.
The air supply device is a variable-frequency centrifugal fan; the outlet part of the wind belt is arranged in a flared bell mouth.
The distance between the wind belt outlet and the bottom surface of the straightening plate is 5-10 cm.
The air volume regulating valve is an electric control pneumatic regulating valve. Through set up automatically controlled pneumatic control valve on the wind channel, amount of wind, wind pressure in the regulation wind channel that can be convenient are convenient for adjust the straightening plate cooling effect according to the difference of operating mode at every turn. In the earlier stage of the process, the temperature on the straightening plate is in the gradual rising process, at the moment, the low air volume and the low air pressure are conveyed through the regulation and control of the air volume regulating valve, the rapid rising of the temperature of the straightening plate is avoided, the temperature of the steel on the straightening plate is cooled in time, and the coarsening of the grain size of the steel caused by the fact that the temperature cannot be cooled in time is avoided. In the production process, the temperature of the straightening plate is accumulated continuously, and at the moment, the large air volume and the high air pressure are conveyed through the regulation and control of the air volume regulating valve, so that the problem of reduction of the cooling effect of steel caused by continuous temperature increase of the temperature of the straightening plate is solved.
The air chamber comprises a plurality of air chambers which are arranged below the hollowed-out straightening plate and are uniformly arranged at intervals along the longitudinal direction of the cooling bed.
The number of the air chambers is designed according to the longitudinal specification of the cooling bed in actual production, and generally meets the cooling range that one air chamber supplies each hollow straightening plate within at least 2/3 areas.
6 air belts are connected above each air chamber and are arranged in parallel at even intervals.
Each wind zone was 1.5m long and 1m wide.
The cooling bed forced cooling device is arranged below the straightening plate of the cooling bed, the straightening plate is a hollow straightening plate, and the structure enables steel cooled by the straightening plate to be reduced by at least 100 ℃ when the steel is fed into the cooling bed, so that the quality of the steel is improved, and the performance of the straightening plate is ensured.
The invention has the beneficial effects that:
the forced cooling device of the cooling bed is characterized in that under the condition that the temperature of the cooling bed on the steel is 850-950 ℃, the temperature of the steel in the straightening plate area is rapidly reduced by over 100 ℃ after forced cooling, the secondary growth of large-size steel grains is effectively avoided, and the performance of the steel is improved by about 20 MPa; after the forced cooling device is started, the straightening plate and the stepping rack of the cooling bed are effectively cooled, so that the thermal expansion deformation of the straightening plate and the stepping rack is favorably reduced, and the flatness of steel is improved; the shearing quality of steel is improved due to the reduction of the temperature of the lower cooling bed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of a partial structure of the present invention;
FIG. 3 is a schematic structural diagram of the cooling bed of the present invention.
In the figure, 1 a hollow straightening plate, 2 an air supply device, 3 air ducts, 4 air chambers, 5 air belts and 6 air volume adjusting valves.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in the figures 1-2, the forced cooling device of the cooling bed is an improvement on the basis of the existing cooling bed, the forced cooling device is mainly added at the position of the straightening plate, meanwhile, the structure of the straightening plate is optimally designed, the problem that the quality of steel materials is reduced due to the fact that the steel materials enter the cooling bed insufficiently at the position of the straightening plate due to insufficient cooling of the steel materials is solved by optimizing the existing natural cooling to be forced cooling when the steel materials are at the position of the straightening plate, the effective cooling of the straightening plate and the stepping rack is guaranteed, and the service life of the cooling bed is prolonged.
Specifically, the cooling bed forced cooling device comprises a hollow straightening plate 1, wherein the hollow straightening plate is a plurality of through holes which are arranged in a vertically through manner and are regularly arranged on the surface of the straightening plate on the basis of the existing straightening plate; be equipped with a plurality of cooling unit below fretwork straightener, the cooling unit includes: the air supply device 2, the air duct 3, the air chamber 4 and the air belt 5; through the arrangement of the through holes, the straightening plate and steel on the straightening plate can be cooled more effectively by being matched with the cooling unit below the through holes.
The inlet of the air duct 3 is connected with the air supply device 2, and the outlet of the air duct 3 is connected with the inlet of the air chamber 4; the outlet of the air chamber 4 is connected with a plurality of air belts 5 which are longitudinally arranged in parallel; the outlet of the wind belt 5 is arranged close to the bottom surface of the hollow straightening plate 1; an air volume adjusting valve 6 is installed on the air duct 3, and the air volume adjusting valve 6 is used for adjusting air volume, air pressure and air direction in the air duct 3.
The cooling unit comprises a plurality of groups which are arranged below the hollowed-out straightening plate and are uniformly arranged along the longitudinal direction of the cooling bed at intervals. And the air supply device, the air duct, the air chamber and the air belt form 1 group of cooling units, and a plurality of groups of cooling devices are uniformly arranged below the longitudinal hollow straightening plate of the cooling bed so as to ensure the cooling uniformity of the hollow straightening plate.
The hollow straightening plate is a plurality of through holes which are regularly distributed on the surface of the straightening plate and are arranged in a penetrating way up and down. The through holes are rectangular through holes which are uniformly and alternately arranged on the surface of the straightening plate.
The air supply device is a variable-frequency centrifugal fan; the outlet part of the wind belt is arranged in a flared bell mouth.
The distance between the wind belt outlet and the bottom surface of the straightening plate is 5-10 cm.
The air volume regulating valve is an electric control pneumatic regulating valve. Through set up automatically controlled pneumatic control valve on the wind channel, amount of wind, wind pressure in the regulation wind channel that can be convenient are convenient for adjust the straightening plate cooling effect according to the difference of operating mode at every turn. In the earlier stage of the process, the temperature on the straightening plate is in the gradual rising process, at the moment, the low air volume and the low air pressure are conveyed through the regulation and control of the air volume regulating valve, the rapid rising of the temperature of the straightening plate is avoided, the temperature of the steel on the straightening plate is cooled in time, and the coarsening of the grain size of the steel caused by the fact that the temperature cannot be cooled in time is avoided. In the production process, the temperature of the straightening plate is accumulated continuously, and at the moment, the large air volume and the high air pressure are conveyed through the regulation and control of the air volume regulating valve, so that the problem of reduction of the cooling effect of steel caused by continuous temperature increase of the temperature of the straightening plate is solved.
The air chamber comprises a plurality of air chambers which are arranged below the straightening plate and are uniformly arranged at intervals along the longitudinal direction of the cooling bed. The number of the air chambers is designed according to the longitudinal specification of the cooling bed in actual production, and generally meets the cooling range that one air chamber supplies each hollow straightening plate within at least 2/3 areas.
6 wind belts which are uniformly arranged in parallel at intervals are connected above each wind chamber.
As shown in figure 3, the forced cooling device is arranged below the straightening plate of the cooling bed, so that the steel cooled by the straightening plate can be reduced by at least 100 ℃ when being loaded on the cooling bed, the quality of the steel is improved, and the performance of the straightening plate is ensured.
When the air conditioner is designed and used, firstly, the existing straightening plate is improved into a hollowed straightening plate 1, 66 air belts are longitudinally positioned and installed along a cooling bed under the hollowed straightening plate to serve as cooling air belts, each section of the cooling air belt is 1.5 meters long and 1 meter wide, the cooling air belts are uniformly and densely distributed along the longitudinal direction of the cooling bed, 1 air chamber is connected with 6 air belts, and 11 air chambers are designed. The air chamber is connected with an air channel, namely a cold air channel, the air channel is additionally provided with an electric control pneumatic regulating valve, so that the automatic adjustment of the air intake, the air pressure and the air direction is realized, the air channel is connected with a variable frequency centrifugal fan, and the variable frequency centrifugal fan is fixed on a basic platform below the cooling bed.
The arrangement of the forced cooling device of the cooling bed reduces the addition of steel alloy caused by temperature rise in summer, although a fan generates certain power consumption in the use of the device, the cost is calculated, and the cost is offset, and meanwhile, the economic cost of the product with reduced alloy addition and improved quality is still reduced compared with the prior device which is not arranged, namely, the additionally arranged device achieves the cooling purpose and improves the product quality.
The electrically controlled pneumatic regulating valves of the air channels are connected with an external controller, and the controller can respectively control and regulate the electrically controlled pneumatic regulating valves to cool and supply air below the hollowed-out straightening plate.
The cooling bed forced cooling device of the embodiment can also be provided with the temperature measuring instruments at the inlet and outlet positions of the cooling bed, so that the real-time temperature measurement monitoring of the temperature nodes is realized. The device is used for controlling the temperature of the steel after the steel is cooled on the cooling bed, thereby being beneficial to improving the comprehensive performance of the steel, eliminating the martensite structure and ensuring the stability of the performance. Meanwhile, the influence of high-temperature environment on equipment and process is eliminated, and the quality of steel is ensured.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (7)
1. The utility model provides a cold bed forced cooling device, includes the leveling board, its characterized in that, the leveling board is the fretwork leveling board, is equipped with a plurality of cooling unit in fretwork leveling board below, cooling unit includes: the air supply device, the air duct, the air chamber and the air belt;
the inlet of the air duct is connected with the air supply device, and the outlet of the air duct is connected with the inlet of the air chamber; the outlet of the air chamber is connected with a plurality of air belts which are longitudinally arranged in parallel; the outlet of the wind belt is arranged close to the bottom surface of the hollow straightening plate;
and an air volume adjusting valve is arranged on the air duct and used for adjusting the air volume, the air pressure and the air direction in the air duct.
2. The forced cooling device of the cooling bed as claimed in claim 1, wherein the hollowed-out straightening plate is a plurality of through holes which are regularly or irregularly arranged on the plate surface of the straightening plate and are arranged to penetrate through from top to bottom; the cooling unit comprises a plurality of groups which are arranged below the hollowed-out straightening plate and are uniformly arranged along the longitudinal direction of the cooling bed at intervals.
3. The cooling bed forced cooling device of claim 1, wherein the air supply device is a variable frequency centrifugal fan; the outlet part of the wind belt is arranged in a flared bell mouth.
4. The cooling bed forced cooling device according to claim 1, wherein the air volume adjusting valve is an electrically controlled pneumatic adjusting valve.
5. The forced cooling device of the cooling bed as claimed in claim 1, wherein the air chamber comprises a plurality of air chambers which are arranged below the hollow straightening plate and are evenly spaced along the longitudinal direction of the cooling bed.
6. The apparatus of claim 1, wherein 6 air belts are connected above each air chamber, and each air belt is arranged in parallel at regular intervals.
7. A cooling bed is characterized in that the forced cooling device of the cooling bed as claimed in any one of claims 1 to 6 is arranged below a straightening plate of the cooling bed, and the straightening plate is a hollow straightening plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827920.3A CN110586667A (en) | 2019-09-03 | 2019-09-03 | Forced cooling device for cooling bed and cooling bed adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827920.3A CN110586667A (en) | 2019-09-03 | 2019-09-03 | Forced cooling device for cooling bed and cooling bed adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110586667A true CN110586667A (en) | 2019-12-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910827920.3A Withdrawn CN110586667A (en) | 2019-09-03 | 2019-09-03 | Forced cooling device for cooling bed and cooling bed adopting same |
Country Status (1)
| Country | Link |
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| CN (1) | CN110586667A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333484A (en) * | 2021-05-27 | 2021-09-03 | 安徽首矿大昌金属材料有限公司 | Technological method for improving phenomenon of shearing bend of bar hot-rolled ribbed steel bar |
-
2019
- 2019-09-03 CN CN201910827920.3A patent/CN110586667A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333484A (en) * | 2021-05-27 | 2021-09-03 | 安徽首矿大昌金属材料有限公司 | Technological method for improving phenomenon of shearing bend of bar hot-rolled ribbed steel bar |
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| Date | Code | Title | Description |
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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: 20191220 |