KR20140080163A - Apparatus for Cooling Hot Plate - Google Patents

Abstract

Provided is an apparatus for cooling a heated high-temperature material obtained by heating a target, such as a board (thick plate, thick material), to be cooled. The cooling apparatus includes a header for cooling a material; at least a pair of pinch rolls provided on a material transferred under the header to remove remaining water by sucking the remaining water between the rolls; and a transfer roll provided to support the transferred material and to spray the remaining water sucked into the pinch rolls. As described above, according to the present invention, the pinch roll performs a conventional function, and particularly performs a cooling function of sucking the remaining water between the rolls and spraying the remaining water to the bottom surface of the material through the transfer roll. Therefore, a cooling variation of the material resulting from the direct removal of the remaining water between the pinch rolls can be removed, and the sucked remaining water can be sprayed into the bottom surface of the material having lower cooling efficiency as compared with that of the top surface of the material. Accordingly, a cooling ability can be improved, thereby improving the cooling efficiency of the device, preventing the material from being deformed, and improving quality, which have improved effects.

Description

Apparatus for Cooling Hot Plate

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for cooling a heated high-temperature material such as a plate material (a thick plate, a post material) and the like, and more particularly, So as to reduce the cost of using the residual water and to eliminate the cooling fluctuation of the material caused by directly removing the residual water itself between the pinch rolls, The present invention relates to a cooling device capable of improving the cooling efficiency of the device and preventing the deformation of the material and improving the quality, because the staying water can be jetted to the lower surface of the material having lower cooling efficiency than the upper surface.

Steel products have their respective manufacturing processes according to the purpose of the material. Among them, cooling process is essential for the products that require high strength (TMCP, API, AHSS, etc.) to make the characteristics of the material.

In order to cool the steel material such as a steel plate, a method of cooling the material by adding (spraying or pouring) cooling water (water), air, gas or the like to the material is usually used.

At this time, in order to uniformly spray the required fluid in the longitudinal direction and the width direction of the material, an injection head equipped with a nozzle capable of jetting a cooling fluid is used.

However, when the cooling water (water) is injected or injected, unlike the lower part, there is inevitably a stay water in the upper part of the material.

However, since the water layer finally forms a water film layer on the material, even if the cooling fluid injected from the upper ejection head, that is, the spray water or liquid, normally collides with the surface of the material, Making material cooling difficult.

In addition, the staying water on the raw material acts as a cause of the supercooling which cools the upper surface of the material more than required while remaining on the material, and eventually causes a temperature deviation between the upper and lower portions of the material.

However, it is not easy to effectively remove the staying water such as the water that is generated on the thick plate during accelerated cooling of the thick plate. Normally, the high-pressure water is injected to block the staying water at a predetermined position, A pinch roll as shown in Fig. 3 below is used.

However, in the case of such a pinch roll, it is possible to block the water in the longitudinal direction and to make the water layer (thickness) of the material in the cooling section constant in each cooling section, but not to completely remove the water, When a lot of cooling water is used in the section, in the case of a heavy plate having a slow conveying speed, it is possible that accumulated water may accumulate to the extent that the pinch roll is overflowed. Therefore, a cooling difference between the upper and lower portions of the thick plate is generated, resulting in a poor flatness of the material.

Therefore, in the related art, while maintaining the function of the conventional pinch roll, particularly, by cooling the water sprayed between the rolls through the conveying roll at the bottom surface of the material, the cost can be reduced by using the staying water, It is possible to eliminate the cooling deviation of the material due to the direct removal of the staying water between the rolls and to inject the sucked staying water to the lower surface of the material having lower cooling efficiency than the upper part to increase the cooling capacity, There has been a demand for a cooling device capable of preventing the deformation of the material and improving the quality.

In order to accomplish the above-described needs, the present invention provides a method of manufacturing a semiconductor device, including: a header provided to cool a workpiece;

A retaining water suction pinch roll provided with at least one pair on a material conveyed to the lower side of the header, the retaining water suction pinch roll configured to suck and remove the water between rolls; And

A holding water delivery type roll provided so as to support the material to be conveyed and constructed so as to be capable of injecting the retained water in the pinch roll;

.

Preferably, the pinch roll further comprises retention water suction means provided symmetrically to the pinch roll either singly or bilaterally for sucking the remaining water between the rolls.

More preferably, the staying water sucking means comprises: a main suction passage formed in the roll body of the pinch roll; And a residence water suction passage formed at a distance along the length of the roll body to communicate with the main suction passage.

The residence water jet type transport roll further includes residence water jetting means for supplying the residence water sucked and supplied so as to be jetted to the material.

Preferably, the staying water jetting means comprises: a main passage formed in the roll body of the transport roll; And a residence water jetting passage formed at a distance from the main body along the length of the roll body to communicate with the main passage.

In this case, more preferably, between the retention water sucking means provided in the pinch roll and the retention water jetting means provided in the conveying roll, a retention water suction line and a retention water supply line are linked with each other from the tank, And the lines are provided with pumps for providing suction force and spraying force.

Preferably, the apparatus further comprises a lower header provided so as to concentrate the lower surface of the material between the transport rolls, and further between the tank and the lower header, a second residence water supply line for implementing header supply of the residence water is further connected will be.

On the other hand, the retention type suction type pinch roll is provided so as to be capable of idling in contact with a material, or a drive source is connected to one side to connect a retention water suction line to both sides or one side of the roll, The supply line is linked, and the drive source is connected to the other side.

Preferably, the passage extending portion is provided on the roll surface side of the staying water suction passage.

Or a slit portion provided on the roll surface side of the staying water suction passage and communicating with the staying water suction passages.

The inner diameter of the main passage of the residual water jet type transfer roll is gradually or stepwise decreased as the distance from the residence water supply side increases.

At this time, the object to be cooled is made of a plate material, and the device is provided as an accelerating cooler.

According to the present invention as described above, while maintaining the function of the conventional pinch roll, particularly, the cooling water is injected through the transfer roll at the bottom surface by sucking the remaining water between the rolls, thereby enabling cost reduction using the staying water .

Particularly, the present invention eliminates the cooling deviation of the material due to the direct removal of the staying water itself between the pinch rolls, and the sucked staying water can be sprayed on the lower surface of the material having lower cooling efficiency than the upper portion, Ultimately improving the cooling efficiency of the apparatus, preventing deformation of the material, and improving the quality.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an outline drawing showing a cooling process of a thick plate (product)
FIG. 2 is a detailed view showing the thick plate cooler in FIG.
Fig. 3 is a flow chart for explaining generation of a retentate during cooling of the thick plate
Figs. 4A and 4B are diagrams showing the state before and after use of the existing pinch roll for the retentate water treatment related to the present invention
FIG. 5 is an overall configuration diagram showing the apparatus for processing a retentate according to the present invention and a cooling apparatus including the same.
Fig. 6 is a perspective view showing the apparatus of the present invention shown in Fig.
Fig. 7 is a diagram showing the operating state of the apparatus of the present invention shown in Figs.
Fig. 8 is a diagram showing another modification of the apparatus of the present invention shown in Fig. 5
9A and 9B are diagrams showing another embodiment of the apparatus of the present invention
10 is a perspective view and a configuration diagram showing still another embodiment of the apparatus of the present invention

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described (with reference to the accompanying drawings). However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. (The shape and size of elements in the drawings may be exaggerated for clarity.)

1 and 2 show accelerated cooling of a thick plate as an example associated with a cooling device 1 and an accelerating cooler 200 according to the present invention, which will be described in detail in the following Figs. 5 to 10, And FIG. 4 shows a thick plate cooling process associated with a pinch roll, wherein the pinch roll for the retentate treatment according to the present invention is described in more detail herein than in the prior art.

That is, as shown in Figs. 1 and 2, the slabs produced by the continuous casting process are heated to the target temperature according to the steel type in the heating furnace 310, and the rolled material S, which has passed through the heating furnace, The rolled material is rolled up to a predetermined thickness, for example, the indicated thickness of the final product through the rolling step (320) of the rolling mill and the finish rolling mill to produce a rear plate material.

After the rough rolling, the plate material S is subjected to a leveling step through a leveler 330 through a cooling system, that is, an accelerating cooler 200, for controlling the grain refinement or transformation texture, ) Is finished in the final product.

As shown in FIG. 2, the accelerator cooler 200 includes four to seven banks 210a to 210d, and four to six upper and lower cooling headers 220 230).

3, in the case of the upper cooling header 220, cooling water is supplied to the tank 226 through the pump 222 and the supply pipe 224, and one tank 226 is provided with a plurality of upper cooling headers 220 And the water column (liquid W) injected from the upper cooling header 220 falls down to the conveying material, that is, the thick plate S, and is cooled. Of course, the cooling water may be injected at a high pressure through the upper cooling header 220 to cool the cooling water.

However, as shown in FIG. 3, when cooling the thick plate, the cooling plate is cooled through the entire cooling header. However, the operation of the cooling header is controlled depending on the product thickness, feed speed, Cooling may be performed through the main water only in the cooling header of the cooling water.

That is, as shown in FIG. 3, in the case of the thick plate S, in particular, in the case of the thin plate having a thin thickness, all of the entire upper cooling header 220 is operated to feed the cooling header The cooling headers 220 are turned ON and the cooling headers 220 of the remaining number-of-weeks section Y are turned OFF to control the cooling range.

The cooling water control in the main part interval X and the non-number part interval Y is controlled by opening and closing the control valves V provided in the connection pipe 228 connected between the tank 222 and the cooling header 220, The supply of the cooling water is supplied or cut off according to ON or OFF as shown in FIG.

However, as shown in FIG. 3, since the number of weeks is not provided in the number-of-weeks section (Y), the temperature difference between the top and bottom of the thick plate is generated due to the number of residues W ' , So that the tip of the thick plate is bent.

For example, when the thick plate is moved from the main interval to the no-rim interval, there is no main water (or injection) of cooling water, so there is no elimination factor such as pushing out the water on the plate, A cooling unevenness in which the upper surface of the thick plate S is cooled more than the lower surface is generated, and therefore, there is a problem that the tip portion of the thick plate is deformed as shown in Fig. Such a stay water not only deforms the tip of the thick plate but also deepens the cooling deviation inside the thick plate, thereby affecting the quality of the product.

4a and Fig. 4b, it is possible to prevent the problem of the number of residues W 'on the thick plate S from being transferred to the top of the thick plate conveying roll 250, Rolls 260 are provided so that the retention number W 'is not formed on the thick plate beyond at least the unit section.

However, as shown in FIGS. 4A and 4B, in the case of such a pinch roll 260, the retention number W 'is blocked in the longitudinal direction of the thick plate, and the staying layer (thickness) However, since the residual water is not completely removed, there is a residual water and there is a temperature difference between the upper and lower portions of the thick plate.

Particularly, when a large amount of cooling water is used in a short cooling interval between the pinch rolls 260, or when the running speed of the thick plate is low according to the cooling condition, the stay water W 'overflows beyond the pinch roll 260 .

Further, since the pinch roll serves as a dam, the total cooling water must be relatively reduced, resulting in a deterioration of the facility performance.

Next, a description will be given of a cooling device 1 in which a holding water W 'formed on a material to be cooled according to the present invention is subjected to a suction process and sprayed from the material conveying roll, based on FIGS. 5 to 10 do.

However, in the following embodiment, the cooling material is referred to as a thick plate S, the cooling device 1 will be described as the accelerator cooler 200 described in FIGS. 1 and 2, and the accelerator cooler The related components, that is, the upper and lower headers 220 and 230 are denoted by the same reference numerals, and detailed description of the accelerator cooler 200 in the following embodiment is omitted.

In the following embodiment, the material will be described as a thick plate S.

5 to 7 show the overall configuration of the cooling device 1 according to the present invention in a configuration, a perspective view, and an operating state diagram.

5 to 7, the cooling apparatus 1 according to the present invention basically includes a header 220 provided to cool a material, that is, an upper header, and a material image transferred to the lower side of the header (10) which is provided with at least one pair of rolls (10, 10) and is configured to suck and remove the retained water (W ') between the rolls, And a residence water jet type transport roll 30 configured to enable jetting.

Therefore, as shown in Figs. 5 and 7, the cooling device 1 of the present invention basically has the function of the pinch roll like the pinch roll of Fig. 4, that is, when the staying water W ' The retention rolls are not simply transferred to the thick plate, and the retention number of the retention rolls is not simply transferred to the retention rolls, So that it can be sprayed from the lower part of the thick plate as cooling water.

2, the actual accelerating cooler 200 is connected to the corresponding unit tanks by a substantial number of the headers, so that the actual number of rotations Is sucked and recycled to the injection cooling water in the lower portion of the thick plate, the cost savings due to the use of cooling water is excellent.

However, in the following embodiment, the pinch roll 10 and the delivery roll 30 will be briefly described as the pinch roll 10 and the retentate-water delivery type transfer roll 30 described above.

5 to 7, the pinch roll 10 of the present invention has a structure in which the retained water W 'between the rolls is supplied to the pinch roll either singly or in a symmetrical manner on both sides, (50).

That is, the staying water sucking means 50 provided in the pinch roll of the present invention has the main suction passage 52 formed in the roll body 12 of the pinch roll 10, and the main suction passage 32 And a residence water suction passage 54 formed at intervals along the length of the roll body so as to communicate with the roll body.

5, the pinch roll 10 may be provided as an idle pinch roll in contact with a thick plate, or may be provided with a power application type in which a driving source such as a motor (M in FIG. 7) The retention water W 'confined in the retention rollers 30 is sucked rapidly through the retention water suction passages 54 (holes) of the retention water sucking means 50, .

As a result, in the case of the cooling device 1 of the present invention, it is not necessary to cut off the remaining water between the rolls through other injection means or the like or to push it out to the side of the thick plate, And is sucked and removed uniformly and quickly through the passages 54 (holes) at a time, so that the effect of substantially removing the residual water is excellent.

Particularly, since the cooling device 1 of the present invention effectively removes the staying water and injects the cooling water rather than the upper part, the remaining water is sprayed in addition to the lower header 230 in the lower part of the lower plate, Cooling variations of the lower plate and the lower plate are reduced and control of the cooling of the thick plate can be performed by controlling the suction water sucking capacity and the spraying capacity through the pumps P1 and P2 as shown in Figs.

This will enable the cooling control of the heavy plate passing through the cooling device of the present invention to enable the production of higher quality heavy plate products.

6 and 7, the pinch roll 10 of the present invention has a structure in which the retentate is sucked from both sides. However, the present invention is not limited thereto. It is also possible that the pinion roll 10 is provided with a power application type in which a drive source such as a motor M is applied. In the following embodiment, however, suction is performed on both sides of the pinch roll 10 in order to enhance the suction force.

That is, a main suction passage 52 penetrating from both sides of the roll body 12 is formed at the center of the inside of the pinch roll 10, and the residence water suction passages 54 are radially passed through the roll in conformity with the main suction passage So that the suction force of the staying water is applied on both sides of the roll to smooth the suction of the staying water.

5 and 7, the main suction passage 52 of the retention water sucking means 50 of the pinch roll 10 is connected to the retention water suction line 92 between the tanks T, In the line, the fingers P1 are provided.

At the same time, as to the structure of the pinch roll 10, the bearing 56a is assembled to both sides of the roll body 12 of the pinch roll, the bearing 56 is fastened to the bearing, The suction hose 58 connected with the suction water suction line 92 is fastened.

Therefore, the water remaining between the pinch rolls during the operation of the pump is collected in the retention water storage tank T through the path of the suction passage-> main passage-> connector-> suction hose-> suction line.

Of course, it is natural that the suction line, the tank T and the pump are provided in accordance with the suction capacity of the staying water.

Next, as shown in Figs. 5 and 7, the conveying roll 30 may further include residence water injecting means 70 supplied with the sucked-up retentate water to be sprayed from the lower portion of the thick plate.

At this time, the residence water injecting means 70 also has a main passage 72 which passes through one side of the roll body 32 of the pinch roll like the residence water sucking means and a main passage 72 which communicates with the main passage 72 (Holes) formed at predetermined intervals along the circumferential direction of the housing.

7, the conveying roll 30 needs to be supplied with power because the conveying roll 30 feeds the thick plate. Therefore, in the case of the conveying roll, the main passage 72 is formed by the one side shaft portion 30a of the roll and the roll body 32, and the driving shaft of the motor M is connected to the opposite roll shaft portion 30b.

At the same time, on both side roll shaft portions of the conveying roll, the rotation is supported by the bearing blocks 76 and the stay water supply line 94 is connected to the one main passage 72 via the rotary joint 78 .

5 and 7, the retention water of the tank T, which is collected by the suction of the retentate, is supplied to the main passage (not shown) of the retention water injector 70 through the supply line during operation of the pump P2 provided in the supply line 72 and the retention water jetting passage 74, the retentate is jetted in a uniform distribution in the width direction of the thick plate.

Of course, it is also possible to arrange a pair of transport rolls corresponding to the lower side of the pinch roll, but this is merely an example, and the transport roll need not always be arranged with the pinch roll, and in any case, The residual water can be supplied to the lower portion of the thick plate which is fed through the feed roll.

5, the staying water according to the present invention can substantially reduce the cost by supplying the staying water in conjunction with the lower header 230 performing the cooling of the lower part of the plate, for example, The second residence water supply line 96 having the pump P3 is installed in the tank T to be assembled and the second residence water supply line 96 is connected to the main supply line of the lower header 230 in a branched form It is possible to reduce the amount of water during cooling water injection in the lower header, thereby enabling cost reduction.

Next, as shown in Fig. 8, it is also preferable to further form an extended portion 54a at the passage entrance side on the roll surface side of the retention water suction passage 54 provided in the pinch roll 10. [

Therefore, in consideration of the fact that the contact area of the retentate water is enlarged, and as a result, a considerable number of retentate aspiration passages 54 are formed in the unit roll, since the entrance area of the retentate water suction passage (hole) of the retentate water is expanded , And the suction performance of the staying water as a whole is improved.

Alternatively, as shown in Figs. 9A and 9B, in the cooling device of the present invention, the retention water suction passages 54 (holes) communicate with the roll surface side of the retention water suction passage 34 of the pinch roll 10 It is also possible to integrally provide the slit portion 34b in accordance with the formation interval of the staying water suction passage by elongating the slit portion 34b in the longitudinal direction of the roll.

Therefore, in this case, although processing of the roll must be added, it will be possible to suck the staying water more smoothly.

Of course, the inner diameter of the retention water suction passage 54 and the main suction passage 52 of the pinch roll, the main passage 72 of the transport roll, and the retention water injection passages 74, which have been described so far, However, considering the cooling condition of the thick plate and the amount of the generated water, it is sufficient to set the number of the water suction passages to be installed.

10, in the case of the conveying roll 30 of the present invention, the inner diameter gradually increases (not shown) as the main passage 72 of the staying water injecting means 70 moves away from the staying water supply side It is also possible to provide a stepwise decreasing stepped shape.

In other words, since the driving source of the motor is connected to one side of the conveying roll, the main passage 72 is formed to penetrate from one side of the main passage 72, As a result, if the inner diameter is dampened, the jetting gradient of the retentate in the longitudinal direction of the transport roll becomes uniform, thus enabling a uniform jet of water in the width direction of the thick plate.

Accordingly, in the case of the cooling apparatus of the present invention as described so far, the direct aspiration of the residual water and the retention water sucked and stored at the same time are sprayed to the lower portion of the thick plate from both sides of the lower header 230 through the transport roll, The upper and lower cooling deviations are eliminated, uniform cooling is achieved, and costs can be reduced due to the circulation and reuse of the stagnant water.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be obvious to those of ordinary skill in the art.

1 .... Cooling unit 10 .... Retained water Suction type pinch roll
30 .... water jet type transfer roll 50 .... staying water suction means
70 .... residence water injection means 200 .... accelerated cooler
220 .... (upper) header 230 .... lower header

Claims (12)

A header 220 provided to cool the material;
A retaining water suction type pinch roll (10) provided with at least one pair on a material conveyed to a lower side of the header, the retention water suction type pinch roll (10) configured to remove the retained water (W ') between the rolls; And
A retentate injection type transport roll (30) provided so as to support the material to be transported, configured to enable retentional water injection sucked from the pinch roll;
.
The method according to claim 1,
The retained water suction type pinch roll (10) comprises retention water suction means (50) provided symmetrically to the pinch roll either singly or bilaterally for the purpose of sucking the retained water between the rolls;
Further comprising:
3. The method of claim 2,
The staying water sucking means (50) comprises a main suction passage (52) formed in the roll body (12) of the pinch roll; And
A retention water suction passage (54) formed at a distance along the length of the roll body to communicate with the main suction passage (32);
And a cooling device.
3. The method of claim 2,
The residual water jetting type transport roll (30) includes a retentate water jetting means (70) supplied with the retentate water sucked and supplied to the material to be jetted;
Further comprising:
5. The method of claim 4,
The staying water jetting means (70) comprises a main passage (72) formed in the roll body (32) of the transfer roll; And
A retaining water injection passage (74) formed at a distance along the length of the roll body to communicate with the main passage (72);
And a cooling device.
6. The method of claim 5,
A retention water suction line 92 and a retention water supply line 94 are provided between the retention water suction means 50 provided on the pinch roll and the retention water injection means 70 provided on the transport roll from the tank T, And a control unit for controlling the flow of the material,
Wherein the lines are provided with pumps (P1, P2) for providing suction force and spraying force.
The method according to claim 6,
Further comprising a lower header (230) provided to concentrate the lower surface of the material between the transport rolls,
Characterized in that a second residence water supply line (96) is provided between the tank (T) and the lower header (230) to implement header supply of the residence water.
The method according to claim 6,
The retentive suction-type pinch roll 10 is provided so as to be capable of idling in contact with a work or connected to a drive source on one side to connect the retention water suction line 92 to both sides or one side of the roll,
Characterized in that the retentate injection type transport roll (30) is connected to a retentate supply line (94) on one side and a drive source is connected on the other side.
The method of claim 3,
A passage extending portion 54a provided on the roll surface side of the staying water suction passage 54;
Further comprising:
The method of claim 3,
A slit portion 54b provided on the roll surface side of the staying water suction passage 54 and communicating with the staying water suction passages;
Further comprising:
6. The method of claim 5,
Characterized in that the inner diameter of the main passage (72) of the staying water jet type transfer roll is gradually or stepwise decreased as it is further away from the staying water supply side.
The method according to any one of claims 1 to 11,
Wherein the cooled material is made of a plate material and provided to an accelerating cooler (200).

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