KR101316512B1 - Method using apparatus for cooling a strip - Google Patents
Method using apparatus for cooling a strip Download PDFInfo
- Publication number
- KR101316512B1 KR101316512B1 KR1020100135313A KR20100135313A KR101316512B1 KR 101316512 B1 KR101316512 B1 KR 101316512B1 KR 1020100135313 A KR1020100135313 A KR 1020100135313A KR 20100135313 A KR20100135313 A KR 20100135313A KR 101316512 B1 KR101316512 B1 KR 101316512B1
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- KR
- South Korea
- Prior art keywords
- plate
- cooling
- cooling water
- sheet
- coolant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The present invention relates to a sheet cooling apparatus and a sheet cooling method using the same, and more particularly, to a sheet cooling apparatus capable of adjusting the injection degree of the cooling water according to the state of the sheet and a sheet cooling method using the same. Plate cooling apparatus according to an embodiment of the present invention includes a first spraying portion provided on the conveying path of the sheet so that the cooling water is sprayed to the upper and lower surfaces of the heated sheet; A second spraying part provided on a conveying path of the sheet material so that the cooling water is sprayed onto the upper and lower surfaces of the heated sheet material; And a pinch roll provided in the conveyance path of the sheet material so that the coolant injected from the first or second jetting portion is uniformly distributed in the sheet material and provided to correct the shape of the sheet material.
Description
The present invention relates to a sheet cooling method using a sheet cooling device, and more particularly, to a sheet cooling method using a plate cooling device that can adjust the injection degree of the cooling water according to the state of the plate.
The high temperature material (slab) manufactured by the continuous casting process and subjected to the heating furnace produces thick plates having a predetermined thickness through rolling steps such as rough rolling mill and finishing mill. do.
For example, as shown in Figure 1, for example, slabs (Slab) produced by the continuous casting process is heated to the target temperature according to the steel grade in the heating furnace (110). After passing through the furnace, the rolling material is subjected to a
Next, as illustrated in FIG. 1, the thick plate material S primarily rolled to a predetermined plate thickness through a roughness rolling mill passes through an accelerated
Then, in order to increase the quality of the rolled product (thick plate product) through a leveling step through the leveler, and finally to the cooling table 150 is finished as a final product.
However, in the case where the thick plate product is not normally produced (rolled), as the demand level of the current consumer is stricter day by day, although not shown in a separate drawing, heat treatment or leveling work (plate calibration work) is performed again through a plate deformation measuring system. Finally, the product for which the plate deformation is compensated for, for example, a heavy plate product is shipped.
Therefore, when the cooling is completed, the material, that is, the non-corrective sheet material should be produced without the need for the post-treatment process after the rolling is completed, which affects the product productivity or the unit cost.
In other words, if the produced plate is deformed, it must undergo a separate calibration work, in which case the production cost is increased, as well as the customer delivery rate decreases due to the weight of the logistics load.
Thus, conventionally, in order to cool the thick plate, a laminar jet method, a multi jet method, and a slit slit jet method have been used. However, in the case of the melt-jet cooling method or the slant slit jet cooling method, there is a small variable range of cooling capacity according to the flow rate, and thus there is a problem in that it is difficult to obtain a desired cooling effect when a material or weak cooling is required.
Accordingly, an object of the present invention is to provide a plate cooling method using a plate cooling apparatus capable of adjusting the spraying degree of the coolant according to the state of the plate, which is devised to solve the above problems.
Plate cooling apparatus according to an embodiment of the present invention includes a first spraying portion provided on the conveying path of the sheet so that the cooling water is sprayed to the upper and lower surfaces of the heated sheet; A second spraying part provided on a conveying path of the sheet material so that the cooling water is sprayed onto the upper and lower surfaces of the heated sheet material; And a pinch roll provided in the conveyance path of the sheet material so that the coolant injected from the first or second jetting portion is uniformly distributed in the sheet material and provided to correct the shape of the sheet material.
In one embodiment of the present invention, it is preferred that the first and second spraying portions are operated to spray cooling water to the heated sheet, separately or simultaneously, depending on the state of the heated sheet.
In one embodiment of the present invention, it is preferable that the first injection unit is composed of a plurality of unit headers provided to jet a large amount of cooling water in a jet injection method.
In one embodiment of the present invention, it is preferable that the second injection portion has a spray type injection structure such that a small amount of cooling water is injected in the form of mist.
Plate cooling method according to an embodiment of the present invention, when the strong cooling needs to be applied to the plate passing through the transfer path, the first injection unit is operated to spray the coolant to the plate (S1); When it is necessary to apply a weak cooling to the plate passing through the transfer path, the second injection unit is operated to spray the coolant to the plate (S2); When it is necessary to apply super cooling to the plate passing through the conveyance path, the step of operating the first and second injection unit at the same time (S3); And in at least one of the steps S1 to S3, it is preferable to include a step (S4) in which the pinch roll is operated to uniformly distribute the cooling water along the width direction of the plate.
In addition, the plate cooling method according to an embodiment of the present invention further includes a step (S5) of operating the second injection unit to remove the residual water formed by cooling the plate after the step S4 and the remaining coolant stays on the plate. It is preferable.
The present invention can adjust the degree of injection of the cooling water in accordance with the state of the plate material, it is possible to effectively cool the plate material.
In addition, the present invention can improve the cooling effect by using the pinch roll to remove the remaining water remaining on the surface of the plate while allowing the cooling water to be distributed throughout the plate surface.
1 is a schematic process chart showing a production (rolling) process of a thick plate product.
Figure 2 schematically shows the configuration of the plate cooling apparatus according to an embodiment of the present invention.
Figure 3 schematically shows a flow chart for a plate cooling method according to an embodiment of the present invention.
Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the plate cooling apparatus and the plate cooling method using the same according to an embodiment of the present invention.
As shown in FIG. 2, the
Here, the
In one embodiment of the present invention, the
However, in one embodiment of the present invention, for convenience of description, the first injection unit for injecting the cooling water (W C ) to the upper surface of the plate (S) is referred to as the first
In one embodiment of the present invention, the first
Here, approximately 1000 or more nozzles provided in the
When the first
On the other hand, in one embodiment of the present invention, the first
Next, in one embodiment of the present invention, the second jetting part is installed on the transport path at a position adjacent to the first jetting part, and together with or separately from the first jetting part, the cooling water W C is used as the sheet S. It is a member provided to cool the board | plate material S by spraying.
However, in one embodiment of the present invention, for convenience of description, the second injection portion for injecting the cooling water (W C ) to the upper surface of the plate (S) is referred to as a second
In one embodiment of the present invention, the second
Hereinafter, with reference to FIG. 3, a plate cooling method according to an embodiment of the present invention will be described.
First, the plate (S) rolled out of the heating furnace through the rolling roll is moved along the feed roll (11), and cooled while passing through the plate cooling apparatus (10).
At this time, according to the temperature of the plate S passing through the
For example, when it is determined that strong cooling needs to be applied to the plate S passing through the transport path, as in step S1, the first
Simultaneously with the above process, the plate S passing through the
For this reason, the
On the other hand, as in step S2, when it is determined that weak cooling needs to be applied to the plate S passing through the transfer path, the first
At this time, the second
In addition, the
And, as in step S3, when it is determined that the plate S passing through the conveying path needs to be supercooled very strongly, the first
Even when the first
And finally, in order to remove the residual water W R remaining on the plate S, the second
In the sheet cooling method according to an embodiment of the present invention, according to the state of the plate (S), the degree of injection of the cooling water (W C ) is determined (for example, cold, weak, or super cold), the cooling water to the plate (S) By injecting (W C ), the board member S can be cooled efficiently. In addition, it does not waste the cooling water (W C ) required for cooling, it is possible to reduce the production cost of the plate (S).
The exemplary embodiments described above are intended to be illustrative, not limiting, in all aspects of the invention. Accordingly, the invention is capable of many modifications and detail in the art, which may be obtained from the teachings contained herein by those skilled in the art. All such modifications and variations are to be considered within the scope and spirit of the present invention as defined by the following claims.
10: plate cooling device 20: first upper injection part
30: first lower part injection part 40: second upper part injection part
50: second lower part sand 60: pinch roll
Claims (6)
According to the plate passing through the conveying path,
A step (S1) in which coolant is injected into the plate by operating the first spraying unit;
The second spraying unit is operated to spray cooling water onto the plate (S2);
Simultaneously operating the first and second spray units (S3); One step is performed according to the amount of cooling,
In the step S1 to step S3, the pinch roll is operated to distribute the cooling water uniformly along the width direction of the plate (S4); plate cooling method performed.
After the step of uniformly distributing the cooling water, further comprising the step (S5) of operating the second injection unit to remove the remaining water formed by cooling the plate and the remaining cooling water stays on the plate. Cooling method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100135313A KR101316512B1 (en) | 2010-12-27 | 2010-12-27 | Method using apparatus for cooling a strip |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100135313A KR101316512B1 (en) | 2010-12-27 | 2010-12-27 | Method using apparatus for cooling a strip |
Publications (2)
Publication Number | Publication Date |
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KR20120073521A KR20120073521A (en) | 2012-07-05 |
KR101316512B1 true KR101316512B1 (en) | 2013-10-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020100135313A KR101316512B1 (en) | 2010-12-27 | 2010-12-27 | Method using apparatus for cooling a strip |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101536906B1 (en) * | 2014-05-28 | 2015-07-16 | 현대제철 주식회사 | Cooling apparatus for material |
KR101848168B1 (en) * | 2016-11-11 | 2018-04-12 | 오창영 | Cooling apparatus for heat treatment of metals |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08192218A (en) * | 1995-01-17 | 1996-07-30 | Nippon Steel Corp | Cooling device for hot rolled steel strip |
JPH11347629A (en) * | 1998-06-09 | 1999-12-21 | Nkk Corp | Straightening and cooling device for high temperature steel plate and its straightening and cooling method |
JP2002121616A (en) | 2000-10-12 | 2002-04-26 | Nkk Corp | Method and device for dewatering high temperature plate to be cooled |
KR20080091393A (en) * | 2006-03-03 | 2008-10-10 | 제이에프이 스틸 가부시키가이샤 | Cooling apparatus for hot rolled steel band and method of cooling the steel band |
-
2010
- 2010-12-27 KR KR1020100135313A patent/KR101316512B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08192218A (en) * | 1995-01-17 | 1996-07-30 | Nippon Steel Corp | Cooling device for hot rolled steel strip |
JPH11347629A (en) * | 1998-06-09 | 1999-12-21 | Nkk Corp | Straightening and cooling device for high temperature steel plate and its straightening and cooling method |
JP2002121616A (en) | 2000-10-12 | 2002-04-26 | Nkk Corp | Method and device for dewatering high temperature plate to be cooled |
KR20080091393A (en) * | 2006-03-03 | 2008-10-10 | 제이에프이 스틸 가부시키가이샤 | Cooling apparatus for hot rolled steel band and method of cooling the steel band |
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KR20120073521A (en) | 2012-07-05 |
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