CN106552907B - Improve the device and method of surface quality of casting belt - Google Patents
Improve the device and method of surface quality of casting belt Download PDFInfo
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- CN106552907B CN106552907B CN201510642924.6A CN201510642924A CN106552907B CN 106552907 B CN106552907 B CN 106552907B CN 201510642924 A CN201510642924 A CN 201510642924A CN 106552907 B CN106552907 B CN 106552907B
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Abstract
The invention discloses a kind of devices and method improving surface quality of casting belt, by cleaning crystallization roll to improve the surface quality of the Cast Strip, wherein, device includes the first brush roll and the second brush roll being distributed along the radial symmetric of the crystallization roll, the bristle density in planting of first brush roll is 30% 40%, the bristle density in planting of second brush roll is 10% 20%, the bristle of first brush roll and second brush roll is mixed by the coarse wool that hair diameter is 0.15 0.20mm and fine, soft fur that hair diameter is 0.08 0.12mm, the ratio of the coarse wool and the fine, soft fur is 6:4‑8:2.This device using the present invention and method, convenient for being cleared up crystallization roll to improve surface quality of casting belt.
Description
Technical field
The present invention relates to strip continuous casting technology field, it particularly relates to a kind of device improving surface quality of casting belt with
And the method for application device raising surface quality of casting belt.
Background technology
In recent years, the research activities of exploitation steel band direct pouring technology (i.e. the nearly end form processing technology of strip) is got over both at home and abroad
Come more active, with fastest developing speed is twin-roll thin strip continuous casting technology among these.Twin-roll thin strip continuous casting technology is Henry in 1865 earliest
Bessemer proposes (the US Patent of this idea:49053).Thin strap continuous casting by continuously casting, rolling, even heat treatment etc.
Process combines together, so that the strip base of production is slightly formed finished industrial product through follow-up rolling is just disposable, enormously simplifies from molten steel
To the production process of steel band, the production cycle is shortened, keeps Steel Production Flow Chart more compact, more continuous, more efficient, more environmentally friendly；Together
When production cost significantly reduce, and the strip product produced is not inferior to traditional handicraft in quality.Therefore, once this technology quilt
It breaks through, it will bring revolutionary impact to entire steel industry in the world.
Specifically, as shown in Figure 1, Twin-roll Strip Continuous Casting is typically：Directly hot molten steel is passed through from ladle 1
Tundish 2 and submersed nozzle 3 are crossed, the uniform cloth of molten steel is flowed to by a water cooling knot by two opposite direction rotatings by current distribution device 4
In the molten bath that brilliant roller 6 and side seal board 5 are formed, the Cast Strips 1~5mm 7 are cooled by water cooling crystallization roll 6, Cast Strip is by pinching
Roller 8 is sent into online milling train 9 strip for being rolled into 0.7-2.5mm, then by rollgang 10 and cooling controller 11,
Then it by the pinch roller 12 before batching, finally enters coiling machine 13 and coils into hot rolled strip.
To casting process, either tradition sheet billet continuous casting or sheet billet or strip casting process, Cast Strip solidification shape is influenced
The principal element of state is the resistance of throwing, i.e. frictional force between solidified shell and crystallization roll (crystallizer) when relative motion.It is thin
With continuous casting process due to having lacked the vibration of traditional continuous casting crystallizer vibration platform and the lubrication of covering slag, it is more prone to glue
Roller.When Cast Strip part roll banding occurs, it may appear that the defects of crackle, Cast Strip are torn, to influence surface quality of casting belt；Work as roll banding
When serious, i.e. the area of Cast Strip roll banding is larger, and Cast Strip adheres to roll surface and can encase crystallization roll, can cause crystallization roll stall, make knot
Brilliant roller apparatus damage.Crystallization roll is the core equipment of thin strap continuous casting, and the service life for improving crystallization roll, which is thin strap continuous casting, reduces cost
It is crucial.Common method is crystal roller surface coating, such as nickel plating, cobalt element in metallurgy, improves the wearability of crystallization roll, but
This method cannot fundamentally solve the problems, such as surface quality of casting belt.
Due to melting molten steel casting roll roll surface cooling velocity quickly, while have many metallic particles, metal oxidation
Object or nonmetal oxide are precipitated and cohere on crystallization roll roll surface.If these Particle distributions are uneven to influence casting roll roller
Face part heat conduction intensity, and then strip surface can be made to crack, lead to the mass defect of strip surface.To ensure strip surface
Quality, countries in the world dual-roller thin-band conticaster use brush roll to carry out roll surface cleaning more, and the form of brush roll is varied, effect
Also different in the method for casting roll roll surface, purpose is all to stick together composition granule using in brush roll cleaning casting roll.
A kind of roll surface cleaning device mentioned in Chinese patent CN200420107544.x, uses metallic spatula to be adjacent to
Roll surface scraping roll surface residue provides pressure using the spring at scraper rear portion.This method is violent to the abrasion of casting roll roll surface,
And it is limited by structure and cannot clear up the small metal oxide of roll surface.
Also a kind of casting roller surface, casting roll are placed in parallel in just like what is introduced in United States Patent (USP) US5307861 with row's hairbrush
Hairbrush can axially move when rotation, and the two forms relative motion and achievees the effect that clear up roll surface.
As described above, crystallization roll roll surface cleaning quality to entire thin strap continuous casting production technology stability play act foot it is light
The effect of weight.In thin strap continuous casting casting process, if roll surface cleaning device clears up unclean, crystallization roll roller to crystallization roll roll surface
Face can assemble more and more " allochthonous sediments ", be deposited on crystallization roll roll surface, and deposition thickness reaches a certain level, can be notable
Crystallization roll thermal coefficient is reduced, the generation of broken belt accident is directly resulted in when serious.If roll surface cleaning device is to crystallization roll roll surface
" too clean " of cleaning, illustrates that the roll surface cleaning device of setting is larger to the pressure of crystallization roll, can be to knot under the conditions of long-term work
Brilliant roller roll surface causes larger abrasion.
It can be seen that reasonably using brush roll, rational roll surface cleaning technology parameter is set, is to improve strip surface matter
One key link of amount.
Invention content
The technical problem to be solved in the present invention is, for deficiency of the prior art, provides a kind of raising Cast Strip
The device and method of surface quality can enhance the cleaning effect to crystallization roll and can avoid injury crystallization roll, to
Ensure the quality of Cast Strip.
In order to solve the above technical problems, technical program of the present invention lies in：A kind of device improving surface quality of casting belt, leads to
Cleaning crystallization roll is crossed to improve the surface quality of the Cast Strip, the device include along the crystallization roll radial symmetric be distributed the
The bristle density in planting of one brush roll and the second brush roll, first brush roll is 30%-40%, and the bristle density in planting refers to
It is planted on the percentage for the whole bristle occupied areas planted on area every square centimeter, the numerical value and area every square centimeter
Bristle radical is related with bristle diameter, and the bristle density in planting of second brush roll is 10%-20%, first brush roll with
The bristle of second brush roll is mixed by the coarse wool of a diameter of 0.15-0.20mm and the fine, soft fur of a diameter of 0.08-0.12mm
It closes, the ratio of the coarse wool and the fine, soft fur is 6:4-8:2.
Preferably, the ratio of the coarse wool and the fine, soft fur is 7：3.
Preferably, the bristle lengths of the bristle lengths of first brush roll and second brush roll are
40-50mm。
Preferably, it is both provided with pressure sensor in first brush roll and second brush roll, institute
State the first brush roll and second brush roll be connected with hydraulic cylinder, can by the Driven by Hydraulic Cylinder towards close or
Direction movement of the person far from the crystallization roll.
Preferably, the material of the bristle of first brush roll and second brush roll is stainless steel.
Preferably, the cleaning plant further includes dust collecting system, for collect first brush roll with
And generated dust when second brush roll work.
In addition, invention additionally discloses a kind of methods improving surface quality of casting belt, and for clearing up crystallization roll, the party
Method is that the first brush roll and the second brush roll, first brush roll and described second is arranged along the radial symmetric of crystallization roll
The bristle density in planting of brush roll is different, and its bristle is all made of coarse wool and is mixed with fine, soft fur, when crystallization roll rotates, first mao
Brush roll and the second brush roll respectively clear up it；The bristle density in planting refer to planted on area every square centimeter it is complete
The percentage of portion's bristle occupied area, the numerical value are related with the bristle radical and bristle diameter planted on area every square centimeter.
Preferably, first brush roll and second brush roll are adjusted separately to described by hydraulic cylinder
The pressure of crystallization roll, and in order to ensure the effect of roll surface cleaning, need the bristle and second brush roll that ensure the first brush roll
The amount of bow that bristle is pressed against on crystallization roll surface is kept constant, and the pressure sensor that can be carried by roll surface cleaning device comes
Hydraulic cylinder action is adjusted, to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is constant, because with casting
Lasting to carry out, the bristle of brush roll can gradually be worn and shorten, at the same crystallization roll 6 also can gradual expanded by heating, brush roll with
Actual distance between crystallization roll roll surface is continually changing.
Preferably, the direction of rotation of first brush roll and second brush roll with the crystallization roll
Direction of rotation it is opposite.
Preferably, first brush roll and second brush roll are pressed against curved on the crystallization roll surface
Song amount is 10-16mm.
The device and method for implementing the raising surface quality of casting belt of the present invention, have the advantages that：(1) of the invention
By the arrangement mode of upper and lower knockdown first brush roll and the second brush roll, reach good roll surface cleaning effect, and
The bristle density in planting of the two is different, can preferably avoid damage crystallization roll；It (2), can be thoroughly real using the form for mixing bristle
The cleaning of existing crystallization roll texture bottom, while bristle stiffness is appropriate, effectively prevents the damage to crystallizing roll surface；(3) pass through hair
Brush roll pressure sensor controls the stroke of hydraulic cylinder, ensures that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is kept
It is constant, when may be implemented long, the roll surface cleaning process of stabilization, it is effectively improved strip surface quality, reduces the occurrence probability of crackle,
The stability of raising production process plays the role of vital；(4) it is disposed with dust collecting system, for clearing up roll surface
Dust and particulate matter out is collected, and can substantially improve operating environment；(5) present invention selects fusing point more high rigidity bigger
Stainless steel bristle, scaling loss can be dripped by molten steel to avoid bristle in production.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the process flow diagram of sheet-band continuous casting and rolling machine unit；
Fig. 2 is the schematic diagram of the device of the raising surface quality of casting belt of the present invention；
Fig. 3 is curved line relation schematic diagram of the brush roll to the pressure and bristle lengths of crystallization roll surface in the present invention；
Fig. 4 is crystallization roll of the present invention and bristle close-up schematic view.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
The device of a kind of raising surface quality of casting belt of the present invention, for clearing up crystallization roll, to improve crystallization
The cleanliness factor of roller ensures its working environment, to improve the quality of Cast Strip.
With reference to shown in Fig. 2, which includes the first brush roll 14 being distributed along the radial symmetric of crystallization roll 6 and the second hairbrush
Roller 16, as shown in the figure, crystallization roll 6 are two, and by being passed through between two crystallization rolls 6, the outside of each crystallization roll 6 is equal for Cast Strip 7
First brush roll 14 and the second brush roll 16 are set.First brush roll 14 is different from the bristle density in planting of the second brush roll 16,
In the first brush roll 14 bristle density in planting be 30%-40%, and the bristle density in planting of the second brush roll 16 be 10%-20%,
In the present invention, the definition of bristle density in planting：Refer to the percentage for the whole bristle occupied areas planted on area every square centimeter,
The numerical value is related with the bristle radical and bristle diameter planted on area every square centimeter.If all selecting density in planting larger
Brush roll combines, it is found that experiment initial stage is also relatively good to the cleaning effect of crystallization roll roll surface, but after long time running, finds
Crystallization roll roll surface has obvious wear trace, largely effects on the service life of crystallization roll；And use (first mao of " upper tightly lower sparse "
Brush roll 14 is close, the second brush roll 16 dredge) brush roll flexible combination mode, can be simultaneous while ensureing roll surface cleaning effect
It cares for smaller to the effect of attrition of crystallization roll roll surface.
The bristle of first brush roll 14 and the second brush roll 16 is by the coarse wool of a diameter of 0.15-0.20mm and a diameter of
The fine, soft fur of 0.08-0.12mm mixes, and the two can uniformly mix, and is formed and mixes hair.In the present invention, coarse wool (a diameter of 0.15-
It is 0.20mm) 6 with the ratio of fine, soft fur (a diameter of 0.08-0.12mm):4-8:2.Preferably, the ratio of coarse wool and fine, soft fur is 7：
3.It is to ensure brush roll (containing the first brush roll 14 and the second brush roll 16) integral hardness to select the purpose of coarse wool doping fine, soft fur
Meanwhile fine, soft fur can be embedded into the bottom of 6 surface texture of crystallization roll and be cleared up, and improve the cleaning effect of roll surface.When work, the
The effect that 6 roll surface of crystallization roll is cleared up in the direction of rotation of one brush roll 14 and the second brush roll 16 has a significant impact, therefore first mao
Brush roll 14 should select opposite with the direction of rotation of crystallization roll 6 with the direction of rotation of the second brush roll 16.
Preferably, in the present invention, the material of the bristle of the first brush roll 14 and the second brush roll 16 is stainless steel,
Without that should select capillary copper, the fusing point of copper is relatively low, only 1080 DEG C, if selecting capillary copper, crystallization is attached in producing sometimes
The molten steel drop temperature of roll surface is higher, can destroy capillary copper, influence roll surface cleaning.The stainless steel can be selected as it is a variety of, for example, this is not
Rust steel can be selected as 304 stainless steels either 316 stainless steels.
In addition, this device of the present invention further includes dust collecting system 15, which is located at first mao
The top of brush roll 14 and the second brush roll 16, it is produced when for collecting the first brush roll 14 and the work of the second brush roll 16
Dust or particulate matter, improve crystallization roll operation environment.
In the present invention, the bristle lengths of the bristle lengths of the first brush roll 14 and the second brush roll 16 can be selected as
40-50mm.Preferably, it is both provided with pressure sensor in the first brush roll 14 and the second brush roll 16, the pressure
Sensor is used to incude the first brush roll 14 and the second brush roll 16 is applied to the pressure on crystallization roll 6, in order to ensure that roll surface is clear
The effect of reason needs to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is kept constant.First brush roll 14 with
And second brush roll 16 be connected respectively with hydraulic cylinder, can by Driven by Hydraulic Cylinder towards close to or far from crystallization roll 6 side
To movement, in such manner, it is possible to ensure that the amount of bow that bristle is pressed against on crystallization roll roll surface is constant.
With reference to shown in Fig. 3, with the lasting progress of casting, the bristle of brush roll can gradually be worn and shorten, tie simultaneously
Brilliant roller 6 also can gradual expanded by heating, the actual distance between brush roll and crystallization roll roll surface is continually changing.In order to ensure
The effect of roll surface cleaning needs to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is kept constant.It can pass through
The included pressure sensor of roll surface cleaning device, to adjust hydraulic cylinder action, to ensure that the bristle of brush roll is pressed against crystallization roll
Amount of bow on face is constant.Under the premise of this, as bristle lengths l gradually shortens, brush roll is pressed against the pressure of crystallization roll surface
Power P gradually increases, as shown in the figure.The amount of bow Δ l that bristle is pressed against on crystallization roll surface is controlled in 10-16mm, such as Fig. 4 institutes
Show.When bristle lengths l is less than 30mm ± 2mm, larger wear damage can be caused to crystallization roll roll surface, offline in time should more be moulted
Brush roll.
A kind of method of raising surface quality of casting belt of the present invention, for clearing up crystallization roll 6, this method is：Edge
The first brush roll 14 and the second brush roll 16 is arranged in the radial symmetric for crystallization roll 6.First brush roll 14 and the second brush roll 16
Bristle density in planting it is different, bristle density in planting range above-mentioned specifically may be used, and its bristle is all made of coarse wool and fine, soft fur
It mixes, when crystallization roll 6 rotates, the first brush roll 14 and the second brush roll 16 respectively clear up it.In the process
In, the pressure of the first brush roll 14 and the second brush roll 16 to crystallization roll 6 is preferably adjusted separately by hydraulic cylinder, it is clear to ensure
The roll surface of crystallization roll 6 is not injured while managing effect.Also, the direction of rotation of the first brush roll 14 and the second brush roll 16 is equal
It is opposite with the direction of rotation of crystallization roll 6.
Embodiment 1
In production process, arrange that roll surface cleaning device, roll surface cleaning device use row symmetrical above and below in the outside of crystallization roll 6
The combined hairbrush roller of cloth clears up crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller is planted close
Degree is 30%, and 16 density in planting of the second brush roll is 10%.
Bristle hybrid mode is uniformly mixed, is formed using the bristle of diameter 0.15mm doping diameter two kinds of diameters of 0.10mm
Mixed hair, is fabricated to the brush roll of mixed wool type.The ratio of mixed hair is：Coarse wool (diameter 0.15mm):Fine, soft fur (diameter 0.10mm)=7:
3。
Bristle original length 45mm, with the lasting progress of casting, the bristle of brush roll can gradually be worn and shorten, together
When crystallization roll also can gradual expanded by heating, in order to ensure roll surface cleaning effect, need ensure brush roll bristle be pressed against knot
Amount of bow on brilliant roll surface is kept constant.The pressure sensor that can be carried by roll surface cleaning device, it is dynamic to adjust hydraulic cylinder
Make, to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is constant.Under the premise of this, with bristle lengths l
It gradually shortens, the pressure P that brush roll is pressed against crystallization roll surface gradually increases, as shown in Figure 3.Bristle is pressed against on crystallization roll surface
The l controls of amount of bow Δ are in 10-16mm.When bristle lengths l is less than 30mm ± 2mm, offline replacement brush roll is answered.
The effect that crystallization roll roll surface is cleared up in the direction of rotation of brush roll when work has a significant impact, the rotation side of brush roll
To the direction opposite with crystallization roll direction of rotation should be selected.The bristle of 304 stainless steel of material selection of brush roll bristle.
In the top of roll surface cleaning device, it is disposed with dust collecting system 15, as shown in Fig. 2, to roll surface in being used to produce
The dust and particulate matter cleared is collected, and can substantially improve operating environment.
After the selection of the type selecting of said brush roller and technological parameter, effect overall merit, roll surface cleaning effect are carried out
Evaluation result is shown：This kind of technique and method have reached the index request of roll surface cleaning；Abrasion of the brush roll to crystallization roll roll surface
Evaluation result is shown：After long time running is tested (>30min), brush roll does not influence the abrasion of crystallization roll roll surface.
Comparative example 1
In production process, arrange that roll surface cleaning device, roll surface cleaning device use row symmetrical above and below in the outside of crystallization roll 6
The combined hairbrush roller of cloth clears up crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller is planted close
Degree is 30%, and 16 density in planting of the second brush roll is 30%.
Bristle hybrid mode is uniformly mixed, is formed using the bristle of diameter 0.15mm doping diameter two kinds of diameters of 0.10mm
Mixed hair, is fabricated to the brush roll of mixed wool type.The ratio of mixed hair is：Coarse wool (diameter 0.15mm):Fine, soft fur (diameter 0.10mm)=7:
3。
Bristle original length 45mm, with the lasting progress of casting, the bristle of brush roll can gradually be worn and shorten, together
When crystallization roll also can gradual expanded by heating, in order to ensure roll surface cleaning effect, need ensure brush roll bristle be pressed against knot
Amount of bow on brilliant roll surface is kept constant.The pressure sensor that can be carried by roll surface cleaning device, it is dynamic to adjust hydraulic cylinder
Make, to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is constant.Under the premise of this, with bristle lengths l
It gradually shortens, the pressure P that brush roll is pressed against crystallization roll surface gradually increases, as shown in Figure 3.Bristle is pressed against on crystallization roll surface
The l controls of amount of bow Δ are in 10-16mm.When bristle lengths l is less than 30mm ± 2mm, offline replacement brush roll is answered.
The effect that crystallization roll roll surface is cleared up in the direction of rotation of brush roll when work has a significant impact, the rotation side of brush roll
To the direction opposite with crystallization roll direction of rotation should be selected.The bristle of 304 stainless steel of material selection of brush roll bristle.
In the top of roll surface cleaning device, it is disposed with dust collecting system 15, as shown in Fig. 2, to roll surface in being used to produce
The dust and particulate matter cleared is collected, and can substantially improve operating environment.
After the selection of the type selecting of said brush roller and technological parameter, effect overall merit, roll surface cleaning effect are carried out
Evaluation result is shown：This kind of technique and method have reached the index request of roll surface cleaning；Abrasion of the brush roll to crystallization roll roll surface
Evaluation result is shown：After long time running is tested (>30min), trace is seriously worn to crystallization roll roll surface in brush roll, this
It is that production is not permitted.
Comparative example 2
In production process, arrange that roll surface cleaning device, roll surface cleaning device use row symmetrical above and below in the outside of crystallization roll 6
The combined hairbrush roller of cloth clears up crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller is planted close
Degree is 10%, and 16 density in planting of the second brush roll is 30%.
Bristle hybrid mode is uniformly mixed, is formed using the bristle of diameter 0.16mm doping diameter two kinds of diameters of 0.10mm
Mixed hair, is fabricated to the brush roll of mixed wool type.The ratio of mixed hair is：Coarse wool (diameter 0.15mm):Fine, soft fur (diameter 0.10mm)=5:
5。
Bristle original length 45mm, with the lasting progress of casting, the bristle of brush roll can gradually be worn and shorten, together
When crystallization roll also can gradual expanded by heating, in order to ensure roll surface cleaning effect, need ensure brush roll bristle be pressed against knot
Amount of bow on brilliant roll surface is kept constant.The pressure sensor that can be carried by roll surface cleaning device, it is dynamic to adjust hydraulic cylinder
Make, to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is constant.Under the premise of this, with bristle lengths l
It gradually shortens, the pressure P that brush roll is pressed against crystallization roll surface gradually increases, as shown in Figure 3.Bristle is pressed against on crystallization roll surface
The l controls of amount of bow Δ are in 10-16mm.When bristle lengths l is less than 30mm ± 2mm, offline replacement brush roll is answered.
The effect that crystallization roll roll surface is cleared up in the direction of rotation of brush roll when work has a significant impact, the rotation side of brush roll
To the direction opposite with crystallization roll direction of rotation should be selected.The bristle of 304 stainless steel of material selection of brush roll bristle.
In the top of roll surface cleaning device, it is disposed with dust collecting system 15, as shown in Fig. 2, to roll surface in being used to produce
The dust and particulate matter cleared is collected, and can substantially improve operating environment.
After the selection of the type selecting of said brush roller and technological parameter, effect overall merit, roll surface cleaning effect are carried out
Evaluation result is shown：This kind of technique and method are unable to reach the index request of roll surface cleaning；Mill of the brush roll to crystallization roll roll surface
Damage evaluation result is shown：After long time running is tested (>30min), brush roll does not influence the abrasion of crystallization roll roll surface.
Comparative example 3
In production process, arrange that roll surface cleaning device, roll surface cleaning device use row symmetrical above and below in the outside of crystallization roll 6
The combined hairbrush roller of cloth clears up crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller is planted close
Degree is 10%, and 16 density in planting of the second brush roll is 10%.
Bristle hybrid mode is uniformly mixed, is formed using the bristle of diameter 0.15mm doping diameter two kinds of diameters of 0.10mm
Mixed hair, is fabricated to the brush roll of mixed wool type.The ratio of mixed hair is：Coarse wool (diameter 0.15mm):Fine, soft fur (diameter 0.10mm)=6:
4。
Bristle original length 45mm, with the lasting progress of casting, the bristle of brush roll can gradually be worn and shorten, together
When crystallization roll also can gradual expanded by heating, in order to ensure roll surface cleaning effect, need ensure brush roll bristle be pressed against knot
Amount of bow on brilliant roll surface is kept constant.The pressure sensor that can be carried by roll surface cleaning device, it is dynamic to adjust hydraulic cylinder
Make, to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is constant.Under the premise of this, with bristle lengths l
It gradually shortens, the pressure P that brush roll is pressed against crystallization roll surface gradually increases, as shown in Figure 3.Bristle is pressed against on crystallization roll surface
The l controls of amount of bow Δ are in 10-16mm.When bristle lengths l is less than 30mm ± 2mm, offline replacement brush roll is answered.
The effect that crystallization roll roll surface is cleared up in the direction of rotation of brush roll when work has a significant impact, the rotation side of brush roll
To the direction opposite with crystallization roll direction of rotation should be selected.The bristle of 304 stainless steel of material selection of brush roll bristle.
In the top of roll surface cleaning device, it is disposed with dust collecting system 15, as shown in Fig. 2, to roll surface in being used to produce
The dust and particulate matter cleared is collected, and can substantially improve operating environment.
After the selection of the type selecting of said brush roller and technological parameter, effect overall merit, roll surface cleaning effect are carried out
Evaluation result is shown：This kind of technique and method are unable to reach the index request of roll surface cleaning；Mill of the brush roll to crystallization roll roll surface
Damage evaluation result is shown：After long time running is tested (>30min), brush roll does not influence the abrasion of crystallization roll roll surface.
Comparative example 4
In production process, arrange that roll surface cleaning device, roll surface cleaning device use row symmetrical above and below in the outside of crystallization roll 6
The combined hairbrush roller of cloth clears up crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller is planted close
Degree is 40%, and 16 density in planting of the second brush roll is 10%.
Bristle uses the bristle of diameter 0.15mm；Bristle original length 46mm, with the lasting progress of casting, brush roll
Bristle can gradually be worn and shorten, at the same crystallization roll also can gradual expanded by heating, in order to ensure roll surface cleaning effect, need
Ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is kept constant.The pressure that can be carried by roll surface cleaning device
Force snesor, to adjust hydraulic cylinder action, to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is constant.At this
Under the premise of a, as bristle lengths l gradually shortens, the pressure P that brush roll is pressed against crystallization roll surface gradually increases, as shown in Figure 3.
The amount of bow Δ l that bristle is pressed against on crystallization roll surface is controlled in 10-16mm.When bristle lengths l is less than 30mm ± 2mm, answer offline
Replace brush roll.
The effect that crystallization roll roll surface is cleared up in the direction of rotation of brush roll when work has a significant impact, the rotation side of brush roll
To the direction opposite with crystallization roll direction of rotation should be selected.The bristle of 316 stainless steel of material selection of brush roll bristle.
In the top of roll surface cleaning device, it is disposed with dust collecting system 15, as shown in Fig. 2, to roll surface in being used to produce
The dust and particulate matter cleared is collected, and can substantially improve operating environment.
After the selection of the type selecting of said brush roller and technological parameter, effect overall merit, roll surface cleaning effect are carried out
Evaluation result is shown：This kind of technique and method are unable to reach the index request of roll surface cleaning；Mill of the brush roll to crystallization roll roll surface
Damage evaluation result is shown：After long time running is tested (>30min), trace is seriously worn to crystallization roll roll surface in brush roll,
This is that production is not permitted.
Comparative example 5
In production process, arrange that roll surface cleaning device, roll surface cleaning device use row symmetrical above and below in the outside of crystallization roll 6
The combined hairbrush roller of cloth clears up crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller is planted close
Degree is 30%, and 16 density in planting of the second brush roll is 10%.
Bristle uses the bristle of diameter 0.10mm；Bristle original length 40mm, with the lasting progress of casting, brush roll
Bristle can gradually be worn and shorten, at the same crystallization roll also can gradual expanded by heating, in order to ensure roll surface cleaning effect, need
Ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is kept constant.The pressure that can be carried by roll surface cleaning device
Force snesor, to adjust hydraulic cylinder action, to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is constant.At this
Under the premise of a, as bristle lengths l gradually shortens, the pressure P that brush roll is pressed against crystallization roll surface gradually increases, as shown in Figure 3.
The amount of bow Δ l that bristle is pressed against on crystallization roll surface is controlled in 10-16mm.When bristle lengths l is less than 30mm ± 2mm, answer offline
Replace brush roll.
The effect that crystallization roll roll surface is cleared up in the direction of rotation of brush roll when work has a significant impact, the rotation side of brush roll
To the direction opposite with crystallization roll direction of rotation should be selected.The bristle of 316 stainless steel of material selection of brush roll bristle.
In the top of roll surface cleaning device, it is disposed with dust collecting system 15, as shown in Fig. 2, to roll surface in being used to produce
The dust and particulate matter cleared is collected, and can substantially improve operating environment.
After the selection of the type selecting of said brush roller and technological parameter, effect overall merit, roll surface cleaning effect are carried out
Evaluation result is shown：This kind of technique and method are unable to reach the index request of roll surface cleaning；Mill of the brush roll to crystallization roll roll surface
Damage evaluation result is shown：After long time running is tested (>30min), brush roll does not influence the abrasion of crystallization roll roll surface,
Find that the outer edge bristle using the brush roll of fine, soft fur has hair down and local wear phenomenon simultaneously
In conclusion only presently preferred embodiments of the present invention, is not used for limiting the scope of implementation of the present invention, it is all according to
The equivalent changes and modifications carried out by shape, construction, feature and spirit described in scope of the invention as claimed should all be included in this
In the right of invention.
Claims (10)
1. a kind of device improving surface quality of casting belt, special by cleaning crystallization roll to improve the surface quality of the Cast Strip
Sign is, includes the first brush roll and the second brush roll being distributed along the radial symmetric of the crystallization roll, first brush roll
Bristle density in planting be 30%-40%, the bristle density in planting refers to shared by whole bristles for being planted on area every square centimeter
The percentage of area, the numerical value is related with the bristle radical and bristle diameter planted on area every square centimeter, described second mao
The bristle density in planting of brush roll is 10%-20%, and the bristle of first brush roll and second brush roll is by a diameter of
The fine, soft fur of the coarse wool of 0.15-0.20mm and a diameter of 0.08-0.12mm mix, the ratio of the coarse wool and the fine, soft fur
It is 6:4-8:2.
2. the device according to claim 1 for improving surface quality of casting belt, which is characterized in that the coarse wool and the fine, soft fur
Ratio be 7：3.
3. the device according to claim 1 for improving surface quality of casting belt, which is characterized in that the brush of first brush roll
The bristle lengths of staple length and second brush roll are 40-50mm.
4. it is according to claim 1 improve surface quality of casting belt device, which is characterized in that first brush roll and
It is both provided with pressure sensor in second brush roll, first brush roll and second brush roll are and hydraulic cylinder
It is connected, can be moved towards the direction close to or far from the crystallization roll by the Driven by Hydraulic Cylinder.
5. it is according to claim 1 improve surface quality of casting belt device, which is characterized in that first brush roll and
The material of the bristle of second brush roll is stainless steel.
6. the device according to claim 1 for improving surface quality of casting belt, which is characterized in that described device further includes dust
Collection system, generated dust when for collecting first brush roll and second brush roll work.
7. a kind of method improving surface quality of casting belt, for clearing up crystallization roll, which is characterized in that along crystallization roll
The first brush roll and the second brush roll, the bristle density in planting of first brush roll and second brush roll is arranged in radial symmetric
Difference, and its bristle is all made of coarse wool and is mixed with fine, soft fur, when crystallization roll rotates, the first brush roll and the second brush roll
It is cleared up respectively；The bristle density in planting refers to the hundred of the whole bristle occupied areas planted on area every square centimeter
Divide ratio, the numerical value related with the bristle radical and bristle diameter planted on area every square centimeter.
8. the method according to claim 7 for improving surface quality of casting belt, which is characterized in that adjusted separately by hydraulic cylinder
First brush roll and second brush roll are to the pressure of the crystallization roll, by pressure sensor, to adjust hydraulic pressure
Cylinder acts, to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface is constant.
9. it is according to claim 8 improve surface quality of casting belt method, which is characterized in that first brush roll and
The direction of rotation of second brush roll is opposite with the direction of rotation of the crystallization roll.
10. it is according to claim 7 improve surface quality of casting belt method, which is characterized in that first brush roll with
And the amount of bow that second brush roll is pressed against on the crystallization roll surface is 10-16mm.
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| CN201510642924.6A CN106552907B (en) | 2015-09-30 | 2015-09-30 | Improve the device and method of surface quality of casting belt |
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| CN201510642924.6A CN106552907B (en) | 2015-09-30 | 2015-09-30 | Improve the device and method of surface quality of casting belt |
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| CN106552907B true CN106552907B (en) | 2018-08-10 |
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| CN201436107U (en) * | 2009-03-26 | 2010-04-07 | 宝山钢铁股份有限公司 | Double-roller thin-belt continuous casting roller surface cleaning device |
| CN201632607U (en) * | 2010-01-28 | 2010-11-17 | 宝钢工程技术集团有限公司 | Thin-strip continuous casting roll surface cleaning device |
| CN101927324A (en) * | 2009-06-25 | 2010-12-29 | 宝山钢铁股份有限公司 | Method and device for improving surface quality of casting belt |
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| CN85203408U (en) * | 1985-08-19 | 1986-07-09 | 北京钢铁学院 | Continuous casting machine with a wheel and steel belt |
| JPH05261485A (en) * | 1992-03-16 | 1993-10-12 | Nippon Steel Corp | Method for coating roll in roll type strip continuous casting machine |
| CN2402422Y (en) * | 2000-01-31 | 2000-10-25 | 北京市钢成冶金机械技术开发公司 | Double roll continuous casting machine |
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| CN106552907A (en) | 2017-04-05 |
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