CN215467036U - Dust removal system for hot rolling leveling unit - Google Patents

Abstract

The utility model provides a dust removal system for a hot rolling leveling unit, which comprises an uncoiling dust removal device positioned at an uncoiler, a straightening dust removal device positioned at a straightener and a leveling dust removal device positioned in a frame of the leveler, wherein the uncoiling dust removal device is connected with the straightening dust removal device; the flattening dust removal device comprises a first blowing and sucking component and a second blowing and sucking component which are respectively arranged on the inlet side and the outlet side of the flattening machine. The utility model discloses a simple structure starts from hot rolling leveling unit overall equipment arrangement, produces the position and the mechanism of iron scale dust according to rolling in-process, has carried out contrastive analysis to each dust removal point, chooses for use different dust removal arrangement structure to different dust removal points to the position point that the utilization was arranged changes, adopts the mode that the pressure-vaccum combines, has realized better pressure-vaccum dust removal effect.

Description

Dust removal system for hot rolling leveling unit

Technical Field

The utility model belongs to the technical field of hot rolling leveling, and particularly relates to a dust removal system for a hot rolling leveling unit.

Background

The hot rolling leveling can improve the structure of a hot rolled product, effectively eliminate the yield platform of the strip steel, improve the plate shape and the surface quality and improve the competitiveness of a hot rolled plate strip product. In the processes of uncoiling, straightening and temper rolling of the surface of the strip steel, oxides on the surface of the strip steel can be separated from a strip steel matrix and fall off, and a dust removal system is arranged on a common hot rolling temper mill.

The production line of the hot rolling leveling unit generates a certain amount of iron oxide dust in the production process, and the dissipated superfine iron oxide dust not only seriously pollutes the working environment in a workshop, but also has great influence on the surface quality of a steel plate. In order to improve the working environment and the surface quality of a steel plate, the common design is that dust suction points are arranged at four positions of an inlet and an outlet of a deep bending roll, a straightening machine and a working roll of a leveling machine, smoke absorbed by air negative pressure is purified by a set of plastic sintered plate dust remover or a cloth bag dust remover and then is discharged out of a factory, and the environment-friendly requirement of low emission in production is met.

Although the dust removal set points are approximately distributed at several positions of uncoiling, straightening and leveling inlet and outlet, the specific arrangement points and structures of the dust removal set points have certain influence on the dust removal effect, such as: generally, a dust removing point is arranged at the front end of a roller of a deep bending roller for uncoiling and dust removal, the roller swings together with the deep bending roller, although the position is close to a dust generating position, the arrangement space of an air suction opening is limited, the length-width ratio of the air suction opening is large, sharp noise is easily generated, and in addition, the roller is easily scraped with strip steel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dust removal system for a hot rolling leveling unit, which starts from the whole equipment arrangement of the hot rolling leveling unit, performs comparative analysis on each dust removal point, selects different dust removal arrangement structures for different dust removal points, and utilizes more easily arranged position points to achieve the purpose of better blowing and sucking dust removal effects.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a dust removal system for a hot rolling leveling unit comprises an uncoiling dust removal device positioned at an uncoiler, a straightening dust removal device positioned at a straightener and a leveling dust removal device positioned in a frame of the leveler; the flattening dust removal device comprises a first blowing and sucking component and a second blowing and sucking component which are respectively arranged on the inlet side and the outlet side of the flattening machine.

Furthermore, the uncoiling dust removal device comprises a brush roll, a fixed frame for mounting the brush roll, a driving motor for driving the brush roll to rotate, a compression roller telescopic hydraulic cylinder for driving the brush roll to be telescopically pressed against the outer surface of the strip steel, and an uncoiling dust removal collecting pipe connected with the brush roll; one end of the uncoiling dust collection pipe, which is connected with the brush roll, completely wraps the non-working surface of the brush roll, and the other end of the uncoiling dust collection pipe is connected with a suction system.

Furthermore, the working surface of the brush roller is composed of steel wire brush sheets which are radially and tightly arranged on the surface of the mandrel.

Further, straightening dust collector sweeps the roof beam including straightening dust removal dust cage and straightening, straightening dust removal dust cage is located the straightening machine under the lower roll system, the inlet scoop has been arranged in the straightening dust removal dust cage, the inlet scoop just arranges to the belted steel lower surface, the straightening sweeps the roof beam and is located the last roll system exit position of straightening machine, and is on a parallel with the axis of last roll and arranges, the straightening is swept and is equipped with a plurality of and is in line and interval distribution's tuyere on the roof beam, and each tuyere sweeps roof beam middle part by the straightening and arranges to both ends slope.

Furthermore, the inner diameter of the straightening dust-collecting cover is in a gradually reducing structure form from top to bottom.

Furthermore, the first blowing and sucking assembly comprises an inlet dust hood, two flat blowing beams arranged inside the inlet dust hood and an inlet dust removal collecting pipe connected with the inlet dust hood; the inlet dust cage covers the upper and lower working roll gap of the temper mill and is arranged, an inlet passage for strip steel to pass is arranged on the inlet dust cage, the inlet passage is formed in the inlet dust cage, the leveling sweeping beam is respectively arranged at the upper and lower working roll gap on the inlet side of the temper mill, the leveling sweeping beam and the working roll axis of the temper mill are arranged in parallel, a plurality of air nozzles which are arranged in a straight line and distributed at intervals are arranged on the leveling sweeping beam, and the air flow sweeping direction of each air nozzle on the leveling sweeping beam is formed by the middle of a corresponding working roll and the roll gap direction of the working roll at the two ends.

Furthermore, one side of the inlet dust hood, which is close to the roll surface of the working roll, is provided with two sections of connected arc-shaped guide plates, the shapes of the two sections of arc-shaped guide plates are respectively matched with the roll surfaces of the upper working roll and the lower working roll, and the arc-shaped guide plates of each section are opposite to the corresponding roll surface and are arranged with a certain gap with the roll surface.

Furthermore, the second blowing and sucking assembly comprises an outlet dust collection cover, three flat blowing beams arranged inside the outlet dust collection cover and an outlet dust removal collecting pipe connected with the outlet dust collection cover; the utility model discloses a leveling machine, including the levelling machine, export dust cage, last working roll gap and last working roll of levelling machine, the last exit passage who supplies the belted steel to pass is seted up to the roll gap of export dust cage upper and lower working roll gap and last supporting roll of covering the levelling machine, and three levels the roof beam that sweeps sets up respectively in last, lower working roll gap and last supporting roll gap department of levelling machine outlet side, level and sweep roof beam and working roll axis parallel arrangement, level and sweep and be equipped with a plurality of and be the tuyere that is in-line row and interval distribution on the roof beam, the air current that levels and sweep each tuyere on the roof beam sweeps the direction and is for being by corresponding the roll gap middle part along the roll gap direction at both ends.

Furthermore, one side of the outlet dust collection hood, which is close to the roller surface, is provided with three sections of arc-shaped guide plates which are sequentially connected from top to bottom, the shapes of the three sections of arc-shaped guide plates are respectively matched with the roller surfaces of the upper supporting roller, the upper working roller and the lower working roller, and the arc-shaped guide plates of all the sections are just opposite to the corresponding roller surfaces and are arranged with a certain gap between the arc-shaped guide plates and the roller surfaces.

Furthermore, the first blowing and sucking assembly and the second blowing and sucking assembly are both connected with a telescopic hydraulic cylinder for driving the first blowing and sucking assembly to be close to or far away from the roll surface of the temper mill.

Compared with the prior art, the utility model has the beneficial effects that:

the dust removal system for the hot rolling leveling unit starts from the arrangement of the whole equipment of the hot rolling leveling unit, carries out comparative analysis on each dust removal point according to the position and mechanism of iron oxide scale dust generated in the rolling process, selects different dust removal arrangement structures for different dust removal points, and realizes better blowing and sucking dust removal effects by using more easily arranged position points and adopting a blowing and sucking combined mode.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a dust removal system for a hot rolling mill train according to the present invention;

FIG. 2 is a schematic view of the structure of a purge beam according to the present invention.

Description of reference numerals: 1. a drive motor; 2. a compression roller telescopic hydraulic cylinder; 3. uncoiling the dust removal collecting pipe; 4. a brush roll; 5. an uncoiler; 6. deep bending rolls; 7. straightening dust removal dust cage; 8. an air suction opening; 9. a straightening machine; 10. straightening the blowing beam; 11. an upper supporting roller; 12. an upper work roll; 13. an inlet dust cage; 14. an inlet dust removal header; 15. a lower working roll; 16. a lower support roll; 17. an outlet dust removal header; 18. a telescopic hydraulic cylinder; 19. an outlet dust cage; 20. flattening the blowing beam; 21. a scraper; 22. and a blast nozzle.

Detailed Description

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 "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in FIG. 1, the embodiment provides a dust removal system for a hot rolling temper mill, which comprises an uncoiling dust removal device positioned at an uncoiler 5, a straightening dust removal device positioned at a straightener 9, and a flattening dust removal device positioned in a frame of the temper mill; when the strip steel is uncoiled, under the action of tension, the hot-rolled strip steel with a certain thickness is continuously subjected to the action of bending moment in the process from bending to flattening, the bending moment is continuously increased along with the uncoiling of the strip steel, oxide scales on the surface layer of the strip steel can be separated and fall off, a common dust removing point is arranged at the front end of a roller of a deep bending roller 6 at an uncoiling outlet at the uncoiling position and swings along with the deep bending roller 6, although the position is close to a dust generating position, the arrangement space of an air suction opening is limited, the length-width ratio value of the air suction opening is large, sharp noise is easy to generate, and the sharp noise is easy to scrape on the strip steel, and on the basis, the uncoiling dust removal device is arranged at one side of an inlet of an uncoiler 5 in the embodiment, namely, at one side of the deep bending roller 6 at the outlet of the uncoiler 5; for the straightening machine 9, through repeated bending, the iron scale on the surface of the strip steel falls off, and the iron scale falling off from the lower surface of the strip steel falls under the action of gravity, so that the straightening dust removal device is arranged right below the straightening machine 9 in the embodiment, and the risk of iron scale dust entering the straightening machine can be reduced; for the leveling place, dust at the inlet of the leveling machine is concentrated at the roll gaps of the upper working roll and the lower working roll, dust at the outlet of the leveling machine is collected at the roll gaps of the upper working roll and the lower working roll, the four-roll leveling machine can be brought into the roll gaps of the upper working roll and the upper supporting roll along the rotation direction of a roll system, and the six-roll leveling machine is brought into the roll gaps of the upper working roll and the upper intermediate roll. The whole equipment of hot rolling leveling unit is arranged into the beginning from this embodiment, according to position and the mechanism that produces the iron scale dust in the rolling process, has carried out contrastive analysis to each dust removal point, chooses different dust removal arrangement structure for use to different dust removal points to the position point that the utilization was changeed and is arranged adopts the mode that the suction-blowing combines, has realized better suction-blowing dust removal effect.

One specific embodiment of the refining uncoiling dust removal device comprises a brush roll 4, a fixed frame for mounting the brush roll 4, a driving motor 1 for driving the brush roll 4 to rotate, a compression roller telescopic hydraulic cylinder 2 for driving the brush roll 4 to stretch and press against the outer surface of the strip steel, and an uncoiling dust removal collecting pipe 3 connected with the brush roll 4; one end of the uncoiling dust collection pipe 3, which is connected with the brush roller 4, completely wraps the non-working surface of the brush roller 4, and the other end of the uncoiling dust collection pipe 3 is connected with a suction system. When the uncoiling dust removal device works normally, the compression roller telescopic hydraulic cylinder 2 drives the brush roll 4 to compress strip steel, meanwhile, the driving motor 1 drives the brush roll 4 to rotate at a high speed against the running direction of the strip steel, iron oxide scales falling off from the surface of the strip steel are sucked into the uncoiling dust removal collecting pipe 3 from the gap of the roll surface of the brush roll 4 through suction and collected, and finally, the iron oxide scales can be sucked into a centralized dust removal processing station through a pipeline to avoid secondary environmental pollution. Specifically, the working surface of the brush roller 4 is composed of steel wire brush sheets which are radially and tightly arranged on the surface of the mandrel, and the iron oxide scales on the surface of the strip steel can be effectively stripped through the structure of the brush roller.

As an implementation mode, the straightening and dust removing device comprises a straightening and dust removing dust hood 7 and a straightening purging beam 10, the straightening and dust removing dust hood 7 is positioned right below a lower roller system of a straightening machine 9, an air suction opening 8 is arranged in the straightening and dust removing dust hood 7, the air suction opening 8 is arranged right opposite to the lower surface of the strip steel, the straightening and dust removing dust hood 7 is in a negative pressure suction state through an external negative pressure suction system, and in the straightening process, oxidized dust falling from the surface of the strip steel is sucked into the straightening and dust removing dust hood 7 through the air suction opening 8 and collected under the action of self gravity and the negative pressure suction below the oxidized dust; preferably, the straightening dust-collecting hood 7 adopts a structure form that the inner diameter thereof is gradually reduced from top to bottom. And in order to better remove the oxidized dust on the upper surface of the strip steel, a straightening purging beam 10 is arranged at the outlet of an upper roll system of the straightening machine 9, the straightening purging beam 10 is arranged in parallel to the axis of the upper roll, a plurality of air nozzles 22 which are arranged in a straight row and are distributed at intervals are arranged on the straightening purging beam 10, and the air nozzles 22 are obliquely arranged from the middle part to the two ends of the straightening purging beam 10, as shown in fig. 2, the oxidized dust on the upper surface of the strip steel is blown into the air suction openings 8 from the middle part to the two ends of the strip steel through the purging effect of the straightening purging beam 10.

In a specific embodiment of the refining and dust removal method at the position of the temper mill, scrapers 21 are arranged at the roll surface outlets of an upper supporting roll 11 and a lower supporting roll 16 of the temper mill, blades of the scrapers are arranged against the rotating direction of a roll system, and the roll surface is cleaned and scraped regularly to avoid the risk that pollutants on the roll surface are copied to the surface of strip steel. Specifically, the first blowing and sucking assembly comprises an inlet dust hood 13, two flat blowing beams 20 arranged inside the inlet dust hood 13, and an inlet dust removal header 14 connected with the inlet dust hood 13; because dust at the inlet of the temper mill is concentrated at the roll gaps of the upper and lower working rolls, the inlet dust hood 13 covers the roll gaps of the upper working roll 12 and the lower working roll 15 of the temper mill, the inlet dust hood 13 is arranged in the full width, an inlet channel is formed in the inlet dust hood 13, strip steel can pass through the inlet channel without influencing the normal production of the strip steel, the two leveling purging beams 20 are respectively arranged at the roll gaps of the upper working roll 12 and the lower working roll 15 at the inlet side of the temper mill, the leveling purging beams 20 are arranged in parallel with the axial line of the working rolls of the temper mill, a plurality of air nozzles 22 which are arranged in a straight row and are distributed at intervals are arranged on the leveling purging beams 20, and as shown in fig. 2, the air flow purging direction of each air nozzle 22 on the leveling purging beams 20 is along the roll gap direction of the working rolls from the middle part of the corresponding working roll to the two ends. When the leveling machine works normally, two leveling purging beams 20 on the inlet side of the leveling machine are opened in a leveling rolling mode, dust generated in the leveling process is blown up through purging, the dust is prevented from falling to the surface of the strip steel, meanwhile, the inlet dust hood 13 is closed due to the upper portion and the lower portion of the inlet dust hood, and the blown dust is sucked away by the suction effect of the inlet dust collection pipe 14 in the inlet dust hood 13, so that closed dust collection is realized, and the dust collection effect on the inlet side of the leveling machine is improved.

Preferably, one side of the inlet dust hood 13, which is close to the roll surface of the working roll, is provided with two sections of connected arc-shaped guide plates, the shapes of the two sections of arc-shaped guide plates are respectively matched with the roll surfaces of the upper working roll and the lower working roll, and each section of arc-shaped guide plate is over against the corresponding roll surface and is arranged with a certain gap between the arc-shaped guide plate and the roll surface. Through design arc guide plate on the entry dust cage for the entry dust cage can be closer to the roller face and arrange, thereby can suck away the dust on the roller face, and the compressed air who thoughtlessly has the dust that sweeps the production simultaneously also can be leading-in to entry dust cage 13 in through this arc guide plate, takes away the dust through 14 suction effect of entry dust removal collector pipe, has effectively avoided sweeping the air current field and has formed the turbulent flow under the influence of reflecting air current, has further improved dust removal effect.

As for the specific structure and function of the second blowing and sucking assembly, reference can be made to the first blowing and sucking assembly, specifically, the second blowing and sucking assembly comprises an outlet dust hood 19, three flat blowing beams 20 arranged inside the outlet dust hood 19, and an outlet dust removal header 17 connected with the outlet dust hood 19; export dust cage 19 covers the upper and lower working roll gap of levelling machine and the roll gap of upper work roll 12 and upper supporting roll 11 arranges, sets up the exit passage that supplies the belted steel to pass on the export dust cage 19, and three levels and sweeps roof beam 20 and sets up respectively in the upper and lower working roll gap of levelling machine outlet side and upper supporting roll 11 roll gap department, level and sweep roof beam 20 and working roll axis parallel arrangement, level and sweep and be equipped with a plurality of and be the tuyere 22 that is in-line row and interval distribution on the roof beam 20, the air current that levels and sweep each tuyere 22 on the roof beam 20 sweeps the direction and is for being followed the roll gap direction by corresponding roll gap middle part to both ends. Also, preferably, three sections of arc-shaped guide plates which are sequentially connected are arranged on one side, close to the roller surface, of the outlet dust collection hood 19 from top to bottom, the shapes of the three sections of arc-shaped guide plates are respectively matched with the roller surfaces of the upper supporting roller 11, the upper working roller 12 and the lower working roller 15, and the arc-shaped guide plates of all the sections are opposite to the corresponding roller surfaces and are arranged with a certain gap from the roller surfaces.

Furthermore, the first blowing and sucking component and the second blowing and sucking component are both connected with a telescopic hydraulic cylinder 18 for driving the first blowing and sucking component to be close to or far away from the roll surface of the temper mill, the dust hood of the corresponding blowing and sucking component is driven to retreat to a safe position through the telescopic hydraulic cylinder 18 when the roll is changed or overhauled, and the dust hood is pushed to a position close to the roll surface during normal work, so that a closed dust collection effect is realized.

In the embodiment, the straightening purging beam 10 and the straightening purging beam 20 can be divided according to the middle section and the edge section, and the main function is to optimally select the number of air nozzles of the purging beam to be purged according to the width of the strip steel without opening all the air nozzles, so that the consumption of compressed air is reduced; meanwhile, the pressure of the purging beam can be adjusted according to the field condition, the purging beam can be operated in a low-pressure state meeting the production requirement as much as possible, and the noise and the energy consumption are reduced. In addition, the dust collected by the uncoiling dust collector, the straightening dust collector and the flattening dust collector can be connected with a plastic burning plate dust collector or a cloth bag filter through pipelines and is discharged to outdoor air through a high-pressure centrifugal fan.

In summary, the dust removal system for the hot rolling mill train provided by the utility model has a simple structure, and starts from the whole equipment arrangement of the hot rolling mill train, contrasts and analyzes each dust removal point according to the position and mechanism of iron oxide scale dust generated in the rolling process, selects different dust removal arrangement structures for different dust removal points, and realizes a better blowing and sucking dust removal effect by using the position points which are easier to arrange and adopting a blowing and sucking combined mode.

The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the utility model, which is intended to be covered by the claims and any design similar or equivalent to the scope of the utility model.

Claims (10)

1. A dust removal system for a hot rolling leveling unit is characterized by comprising an uncoiling dust removal device positioned at an uncoiler, a straightening dust removal device positioned at a straightening machine and a leveling dust removal device positioned in a rack of the leveling machine; the flattening dust removal device comprises a first blowing and sucking component and a second blowing and sucking component which are respectively arranged on the inlet side and the outlet side of the flattening machine.

2. The system of claim 1, wherein the uncoiling dust collector comprises a brush roll, a fixed frame on which the brush roll is mounted, a driving motor for driving the brush roll to rotate, a roller-retracting hydraulic cylinder for driving the brush roll to retract and press against the outer surface of the strip, and an uncoiling dust-collecting header connected to the brush roll; one end of the uncoiling dust collection pipe, which is connected with the brush roll, completely wraps the non-working surface of the brush roll, and the other end of the uncoiling dust collection pipe is connected with a suction system.

3. The system of claim 2, wherein the brush roll comprises steel wire brush segments radially closely spaced on the mandrel surface.

4. The dust removal system for the hot rolling leveling unit as claimed in claim 1, wherein the straightening dust removal device comprises a straightening dust removal dust collection cover and a straightening purging beam, the straightening dust collection cover is located under a lower roller system of the straightening machine, an air suction port is arranged in the straightening dust collection cover, the air suction port is arranged right opposite to the lower surface of the strip steel, the straightening purging beam is located at an outlet position of an upper roller system of the straightening machine and is arranged parallel to an axis of the upper roller, a plurality of air nozzles which are arranged in a straight row and are distributed at intervals are arranged on the straightening purging beam, and each air nozzle is obliquely arranged from the middle of the straightening purging beam to two ends.

5. The system of claim 4, wherein the inner diameter of the straightening dust-collecting hood is tapered from top to bottom.

6. The system of claim 1, wherein the first blower assembly comprises an inlet dust cage, two flattening purge beams disposed inside the inlet dust cage, and an inlet dust collector connected to the inlet dust cage; the inlet dust cage covers the upper and lower working roll gap of the temper mill and is arranged, an inlet passage for strip steel to pass is arranged on the inlet dust cage, the inlet passage is formed in the inlet dust cage, the leveling sweeping beam is respectively arranged at the upper and lower working roll gap on the inlet side of the temper mill, the leveling sweeping beam and the working roll axis of the temper mill are arranged in parallel, a plurality of air nozzles which are arranged in a straight line and distributed at intervals are arranged on the leveling sweeping beam, and the air flow sweeping direction of each air nozzle on the leveling sweeping beam is formed by the middle of a corresponding working roll and the roll gap direction of the working roll at the two ends.

7. The system of claim 6, wherein the dust collecting hood is provided with two connected arc deflectors on a side close to the roll surfaces of the work rolls, the two arc deflectors are respectively matched with the roll surfaces of the upper and lower work rolls in shape, and each arc deflector is opposite to the corresponding roll surface and is arranged with a certain gap from the roll surface.

8. The system of claim 1, wherein the second blow-and-suction assembly comprises an outlet dust cage, three leveling purge beams disposed inside the outlet dust cage, and an outlet dust collection header connected to the outlet dust cage; the utility model discloses a leveling machine, including the levelling machine, export dust cage, last working roll gap and last working roll of levelling machine, the last exit passage who supplies the belted steel to pass is seted up to the roll gap of export dust cage upper and lower working roll gap and last supporting roll of covering the levelling machine, and three levels the roof beam that sweeps sets up respectively in last, lower working roll gap and last supporting roll gap department of levelling machine outlet side, level and sweep roof beam and working roll axis parallel arrangement, level and sweep and be equipped with a plurality of and be the tuyere that is in-line row and interval distribution on the roof beam, the air current that levels and sweep each tuyere on the roof beam sweeps the direction and is for being by corresponding the roll gap middle part along the roll gap direction at both ends.

9. The system of claim 8, wherein the dust collecting hood is provided with three consecutive arc deflectors from top to bottom on a side close to the roll surface, the three arc deflectors are respectively matched with the roll surfaces of the upper support roll, the upper work roll and the lower work roll in shape, and each arc deflector is opposite to the corresponding roll surface with a certain gap therebetween.

10. The system of claim 1, wherein the first and second blow-and-suction assemblies are each coupled to a telescoping hydraulic cylinder that drives the first and second blow-and-suction assemblies toward and away from the roll surface of the temper mill.

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