CN106552907A - 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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- CN106552907A CN106552907A CN201510642924.6A CN201510642924A CN106552907A CN 106552907 A CN106552907 A CN 106552907A CN 201510642924 A CN201510642924 A CN 201510642924A CN 106552907 A CN106552907 A CN 106552907A
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Abstract
The invention discloses a kind of device and method for improving surface quality of casting belt, by cleaning crystallization roll to improve the surface quality of the Cast Strip, wherein, device includes first brush roll and the second brush roll of the radial symmetric distribution along 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%, first brush roll is mixed for the fine, soft fur of 0.08-0.12mm by the coarse wool and hair footpath that hair footpath is 0.15-0.20mm with the bristle of second brush roll, the ratio of the coarse wool and the fine, soft fur is 6:4-8:2.Using this device and method of the present invention, it is easy to clear up so as to improve surface quality of casting belt crystallization roll.
Description
Technical field
The present invention relates to strip continuous casting technology field, it particularly relates to a kind of device for improving surface quality of casting belt and should
The method that surface quality of casting belt is improved with the device.
Background technology
In recent years, the research activities both at home and abroad to developing steel band direct pouring technology (i.e. the nearly end form process technology of strip) is got over
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 1865 earliest
Henry Bessemer propose (the US Patent of this idea:49053).Thin strap continuous casting by continuously casting, rolling,
The even operation such as heat treatment combines together, the strip base slightly Jing of production is subsequently rolled and forms finished industrial product with regard to disposable, greatly
Simplify greatly the production process from molten steel to steel band, shorten the production cycle, make Steel Production Flow Chart it is more compact, more continuous,
It is more efficient, more environmentally friendly；Production cost is significantly reduced simultaneously, and the strip product produced is not inferior to traditional handicraft in quality.
Therefore, this technology is once broken, it will bring revolutionary impact to whole steel industry in the world.
Specifically, as shown in figure 1, Twin-roll Strip Continuous Casting is typically：Directly by hot molten steel from ladle 1
Through tundish 2 and submersed nozzle 3, by current distribution device 4 by molten steel uniform cloth stream to one by two opposite direction rotatings
In the molten bath that water-cooled crystallization roll 6 and side seal board 5 are formed, 1～5mm Cast Strips 7 are cooled into through water-cooled crystallization roll 6,
Cast Strip is rolled into the strip of 0.7-2.5mm in pinch roll 8 sends into online milling train 9, then by rollgang 10
And cooling controller 11, then the pinch roll 12 before batching, finally enters coiling machine 13 and coils into hot-rolled steel
Band.
To casting process, either traditional sheet billet continuous casting, or sheet billet or strip casting process, affect Cast Strip solidification shape
The frictional force when principal element of state is relative motion between the resistance of throwing, i.e. solidified shell and crystallization roll (crystallizer).
Thin band continuous casting technique is due to having lacked the vibration of traditional continuous casting crystallizer vibration platform and the lubrication of covering slag, therefore easily produces
Raw roll banding.When Cast Strip local roll banding occurs, it may appear that the defect such as crackle, Cast Strip tear, so as to affect strip surface matter
Amount；When roll banding is 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 knot
Brilliant roller stall, makes crystallization roll equipment damage.Crystallization roll is the nucleus equipment of thin strap continuous casting, and the life-span for improving crystallization roll is thin
Key with continuous casting reduces cost.The method commonly used in metallurgy is crystal roller surface coating, such as the element such as nickel plating, cobalt,
The wearability of crystallization roll is improved, but the method can not fundamentally solve the problems, such as surface quality of casting belt.
Due to melting molten steel casting roll roll surface cooling velocity quickly, while having many metallic particles, metal oxide
Or nonmetal oxide is separated out and is cohered on crystallization roll roll surface.If these Particle distributions are uneven to affect casting roll roller
Face local heat conduction intensity, and then crack can strip surface, cause the mass defect of strip surface.To ensure Cast Strip
Surface quality, carries out roll surface cleaning using brush roll more than the dual-roller thin-band conticaster of countries in the world, and the form of brush roll is various more
Sample, the method for acting on casting roll roll surface are also different, and purpose is all to stick together composition granule using what brush roll was cleared up in 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.Abrasion of this method to casting roll roll surface is acute
It is strong, and limited by structure and can not clear up the small metal oxide of roll surface.
Also casting roller surface is placed in parallel in row's hairbrush just like the one kind introduced in United States Patent (USP) US5307861, casting roll turns
When dynamic, hairbrush can axially move, and the two forms the effect that relative motion reaches cleaning roll surface.
As described above, crystallization roll roll surface cleaning quality the technology stability that whole thin strap continuous casting is produced is played it is very important
Effect.In thin strap continuous casting casting cycle, if unclean, the crystallization roll that roll surface cleaning device is cleared up to crystallization roll roll surface
Roll surface can be assembled more and more " allochthonous sediment ", be deposited on crystallization roll roll surface, and deposit thickness reaches to a certain degree,
Crystallization roll thermal conductivity factor can be significantly reduced, the generation of broken belt accident when serious, is directly resulted in.If roll surface cleaning device is to knot
" too clean " of brilliant roller roll surface cleaning, illustrates that the roll surface cleaning device for arranging is larger to the pressure of crystallization roll, long-term work
Under the conditions of, larger abrasion can be caused to crystallization roll roll surface.
As can be seen here, reasonably using brush roll, rational roll surface cleaning technology parameter is set, is to improve strip surface matter
One key link of amount.
The content of the invention
The technical problem to be solved in the present invention is, for the deficiency existing for prior art, there is provided a kind of to improve strip surface
The device and method of quality, which can strengthen the cleaning effect to crystallization roll and can avoid injuring crystallization roll, so as to protect
The quality of card Cast Strip.
To solve above-mentioned technical problem, technical program of the present invention lies in：A kind of device for improving surface quality of casting belt, leads to
Cleaning crystallization roll is crossed to improve the surface quality of the Cast Strip, the device includes that the radial symmetric along the crystallization roll is distributed
First brush roll and the second brush roll, the bristle density in planting of first brush roll is 30%-40%, second brush roll
Bristle density in planting be 10%-20%, first brush roll with the bristle of second brush roll by hair footpath is
The coarse wool of 0.15-0.20mm and hair footpath are mixed for the fine, soft fur of 0.08-0.12mm, the coarse wool and the fine, soft fur
Ratio 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, pressure sensor is provided with first brush roll and second brush roll, it is described
First brush roll and second brush roll are connected with hydraulic cylinder, can by the Driven by Hydraulic Cylinder towards near or
Person is moved away from the direction of the crystallization roll.
Preferably, the material of the bristle of first brush roll and second brush roll is stainless steel.
Preferably, the cleaning plant also include dust collecting system, for collect first brush roll and
Second brush roll dust produced when working.
In addition, invention additionally discloses it is a kind of improve surface quality of casting belt method, for clearing up to crystallization roll, the party
Method is, the radial symmetric along crystallization roll arranges the first brush roll and the second brush roll, first brush roll and described the
The bristle density in planting of two brush rolls is different, and its bristle is mixed with fine, soft fur using coarse wool, when crystallization roll is rotated,
First brush roll and the second brush roll are cleared up to which respectively.
Preferably, first brush roll and second brush roll are adjusted respectively to the knot by hydraulic cylinder
The pressure of brilliant roller, and in order to ensure the effect of roll surface cleaning, need the bristle and the second brush roll of the first brush roll of guarantee
The amount of bow that bristle is pressed against on crystallization roll surface keeps constant, the pressure sensor that can be carried by roll surface cleaning device,
It is to adjust hydraulic cylinder action, constant to guarantee the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface, because with pouring
Casting is persistently carried out, and the bristle of brush roll can gradually be worn and shorten, at the same crystallization roll 6 also can gradually expanded by heating,
Actual distance between brush roll and crystallization roll roll surface is being continually changing.
Preferably, the direction of rotation of first brush roll and second brush roll with the crystallization roll
Direction of rotation is contrary.
Preferably, the first time brush roll and second brush roll are pressed against curved on the crystallization roll surface
Bent amount is 10-16mm.
Implement the device and method of the raising surface quality of casting belt of the present invention, have the advantages that：(1) present invention
By upper and lower knockdown first brush roll and the arrangement mode of the second brush roll, good roll surface cleaning effect is reached, and
And the bristle density in planting of the two is different, preferably can avoid damaging crystallization roll；(2) in the form of bristle is mixed, can
The cleaning of crystallization roll texture bottom is thoroughly realized, while bristle stiffness is appropriate, the infringement to crystallizing roll surface is effectively prevent；
(3) by brush roll pressure sensor controlling the stroke of hydraulic cylinder, it is ensured that the bristle of brush roll is pressed against crystallization roll surface
On amount of bow keep it is constant, it is possible to achieve roll surface cleaning process when long, stable, be effectively improved strip surface quality,
The occurrence probability of crackle is reduced, the stability for improving production process serves vital effect；(4) it is disposed with dust
Collection system, the dust and particulate matter for clearing to roll surface are collected, and can substantially improve operating environment；(5)
From the bigger stainless steel bristle of fusing point more high rigidity, in can avoiding production, bristle is dripped scaling loss by molten steel to the present invention.
Description of the drawings
Detailed description non-limiting example made with reference to the following drawings by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Process flow diagrams of the Fig. 1 for 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 for, in the present invention, brush roll is to crystallizing the pressure of roll surface and the curved line relation schematic diagram of bristle lengths；
Fig. 4 is crystallization roll according to the present invention and bristle close-up schematic view.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the common of this area
For technical staff, without departing from the inventive concept of the premise, some deformations and improvement can also be made.These all belong to
In protection scope of the present invention.
The device of a kind of raising surface quality of casting belt of the present invention, for clearing up to crystallization roll, to improve crystallization roll
Cleanliness factor, it is ensured that its working environment, so as to improve the quality of Cast Strip.
With reference to shown in Fig. 2, the device includes first brush roll 14 and the second hairbrush of the radial symmetric distribution along crystallization roll 6
Roller 16, as shown in FIG., crystallization roll 6 is two, Cast Strip 7 by passing through between two crystallization rolls 6, each crystallization roll 6
Outside be respectively provided with the first brush roll 14 and the second brush roll 16.The bristle of the first brush roll 14 and the second brush roll 16
Density in planting is different, wherein the bristle density in planting of the first brush roll 14 is 30%-40%, and the bristle of the second brush roll 16 is planted
Density is 10%-20%, in the present invention, the definition of bristle density in planting：Refer to the whole brushes planted on area every square centimeter
Area shared by hair, the numerical value are relevant with the bristle radical and bristle diameter planted on area every square centimeter.If all
From the brush roll combination that density in planting is larger, it is found that the test initial stage is also relatively good to the cleaning effect of crystallization roll roll surface, but
After long time running, it is found that crystallization roll roll surface has obvious wear trace, largely effect on the service life of crystallization roll；
And the brush roll flexible combination mode of " upper tightly lower sparse " (the first brush roll 14 is close, and the second brush roll 16 is dredged) is adopted,
Can take into account less to the effect of attrition of crystallization roll roll surface while roll surface cleaning effect is ensured.
The bristle of the first brush roll 14 and the second brush roll 16 by hair footpath for 0.15-0.20mm coarse wool and hair footpath be
The fine, soft fur of 0.08-0.12mm is mixed, and the two uniformly can mix, and forms mixed hair.In the present invention, coarse wool (hair footpath
For 0.15-0.20mm) it is 6 with the ratio of fine, soft fur (hair footpath be 0.08-0.12mm):4-8:2.Preferably, coarse wool with
The ratio of fine, soft fur is 7：3.It is to ensure brush roll (containing the first brush roll 14 and second from the purpose of coarse wool doping fine, soft fur
Brush roll 16) integral hardness while, fine, soft fur can be embedded into the bottom of 6 superficial makings of crystallization roll and be cleared up, improve
The cleaning effect of roll surface.During work, the direction of rotation of the first brush roll 14 and the second brush roll 16 is to 6 roll surface of crystallization roll
The effect of cleaning has a significant impact, therefore the direction of rotation of the first brush roll 14 and the second brush roll 16 should select and crystallization roll
6 direction of rotation is contrary.
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,
And capillary copper should not be selected, the fusing point of copper is relatively low, only 1080 DEG C, if selecting capillary copper, is attached in producing sometimes
The molten steel drop temperature of crystallization roll surface is higher, can destroy capillary copper, affect roll surface cleaning.The stainless steel can be selected as various,
For example, the stainless steel can be selected as 304 stainless steels or 316 stainless steels.
In addition, this device of the present invention also includes dust collecting system 15, the dust collecting system 15 is located at first mao
The top of brush roll 14 and the second brush roll 16, during for collecting the first brush roll 14 and the work of the second brush roll 16
Produced dust or particulate matter, improve the environment of crystallization roll operation.
In the present invention, the bristle lengths of the bristle lengths of the first brush roll 14 and the second brush roll 16 can select be
40-50mm.Preferably, pressure sensor is provided with the first brush roll 14 and the second brush roll 16,
The pressure sensor is used to sense the first brush roll 14 and the second brush roll 16 is applied to the pressure on crystallization roll 6, in order to
Ensure the effect of roll surface cleaning, need to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface keeps constant.The
One brush roll 14 and the second brush roll 16 are connected with hydraulic cylinder respectively, can by Driven by Hydraulic Cylinder towards near or
Move away from the direction of crystallization roll 6, in such manner, it is possible to guarantee 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 persistently carrying out for casting, the bristle of brush roll can gradually be worn and shorten, while knot
Brilliant roller 6 also can gradually expanded by heating, the actual distance between brush roll and crystallization roll roll surface is being continually changing.In order to
Ensure the effect of roll surface cleaning, need to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface keeps constant.Can
With the pressure sensor carried by roll surface cleaning device, hydraulic cylinder action is adjusted, to guarantee that the bristle of brush roll is pressed against
Amount of bow on crystallization roll surface is constant.Under the premise of this, as bristle lengths l gradually shorten, brush roll is pressed against
The pressure P of crystallization roll surface gradually increases, as shown in FIG..The amount of bow Δ l controls that bristle is pressed against on crystallization roll surface exist
10-16mm, as shown in Figure 4.When bristle lengths l are less than 30mm ± 2mm, larger mill can be caused to crystallization roll roll surface
Evil is damaged, should timely offline replacing brush roll.
A kind of method of raising surface quality of casting belt of the present invention, for clearing up to crystallization roll 6, the method is：Edge
The radial symmetric for crystallization roll 6 arranges the first brush roll 14 and the second brush roll 16.First brush roll 14 and the second hairbrush
The bristle density in planting of roller 16 is different, can specifically adopt aforesaid bristle density in planting scope, and its bristle using thick
Hair is mixed with fine, soft fur, and when crystallization roll 6 is rotated, the first brush roll 14 and the second brush roll 16 are carried out to which respectively
Cleaning.In this process, the 16 pairs of crystallizations of the first brush roll 14 and the second brush roll are adjusted respectively by hydraulic cylinder preferably
The pressure of roller 6, to ensure the roll surface of crystallization roll 6 is not injured while cleaning effect.Also, the first brush roll 14 with
And second brush roll 16 direction of rotation it is contrary with the direction of rotation of crystallization roll 6.
Embodiment 1
In production process, in the outside arrangement roll surface cleaning device of crystallization roll 6, roll surface cleaning device adopts row symmetrical above and below
The combined hairbrush roller of cloth is cleared up to crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller
Density in planting is 30%, and 16 density in planting of the second brush roll is 10%.
Bristle hybrid mode is uniformly mixed using the bristle in two kinds of hair footpaths of hair footpath 0.15mm doping hair footpath 0.10mm, is formed
Mixed hair, is fabricated to the brush roll of mixed wool type.The ratio of mixed hair is：Coarse wool (hair footpath 0.15mm):Fine, soft fur (hair footpath 0.10mm)
=7:3.
Bristle original length 45mm, with persistently carrying out for casting, the bristle of brush roll can gradually be worn and shorten, together
When crystallization roll also can gradually expanded by heating, in order to ensure the effect of roll surface cleaning, need the bristle for ensureing brush roll to be pressed against
Amount of bow on crystallization roll surface keeps constant.The pressure sensor that can be carried by roll surface cleaning device, adjusts hydraulic pressure
Cylinder action, it is constant to guarantee the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface.Under the premise of this, with brush
Staple length l gradually shortens, and brush roll is pressed against the pressure P of crystallization roll surface and gradually increases, as shown in Figure 3.Bristle is pressed against
Amount of bow Δ l on crystallization roll surface is controlled in 10-16mm.Bristle lengths l be less than 30mm ± 2mm when, answer it is offline more
Moult brush roll.
During work, the direction of rotation of brush roll is had a significant impact to the effect that crystallization roll roll surface is cleared up, the direction of rotation of brush roll
The direction contrary 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, dust collecting system 15 is disposed with, as shown in Fig. 2 being used in production to roll surface
The dust and particulate matter for clearing is collected, and can substantially improve operating environment.
After the selection of the type selecting and technological parameter of said brush roller, effect overall merit is carried out, roll surface cleaning effect is commented
Valency result shows：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 shows：After long time running test (>30min), abrasion of the brush roll to crystallization roll roll surface does not have shadow
Ring.
Comparative example 1
In production process, in the outside arrangement roll surface cleaning device of crystallization roll 6, roll surface cleaning device adopts row symmetrical above and below
The combined hairbrush roller of cloth is cleared up to crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller
Density in planting is 30%, and 16 density in planting of the second brush roll is 30%.
Bristle hybrid mode is uniformly mixed using the bristle in two kinds of hair footpaths of hair footpath 0.15mm doping hair footpath 0.10mm, is formed
Mixed hair, is fabricated to the brush roll of mixed wool type.The ratio of mixed hair is：Coarse wool (hair footpath 0.15mm):Fine, soft fur (hair footpath 0.10mm)
=7:3.
Bristle original length 45mm, with persistently carrying out for casting, the bristle of brush roll can gradually be worn and shorten, together
When crystallization roll also can gradually expanded by heating, in order to ensure the effect of roll surface cleaning, need the bristle for ensureing brush roll to be pressed against
Amount of bow on crystallization roll surface keeps constant.The pressure sensor that can be carried by roll surface cleaning device, adjusts hydraulic pressure
Cylinder action, it is constant to guarantee the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface.Under the premise of this, with brush
Staple length l gradually shortens, and brush roll is pressed against the pressure P of crystallization roll surface and gradually increases, as shown in Figure 3.Bristle is pressed against
Amount of bow Δ l on crystallization roll surface is controlled in 10-16mm.Bristle lengths l be less than 30mm ± 2mm when, answer it is offline more
Moult brush roll.
During work, the direction of rotation of brush roll is had a significant impact to the effect that crystallization roll roll surface is cleared up, the direction of rotation of brush roll
The direction contrary 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, dust collecting system 15 is disposed with, as shown in Fig. 2 being used in production to roll surface
The dust and particulate matter for clearing is collected, and can substantially improve operating environment.
After the selection of the type selecting and technological parameter of said brush roller, effect overall merit is carried out, roll surface cleaning effect is commented
Valency result shows：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 shows：After long time running test (>30min), brush roll has heavy wear trace to crystallization roll roll surface
Mark, this is that production is not permitted.
Comparative example 2
In production process, in the outside arrangement roll surface cleaning device of crystallization roll 6, roll surface cleaning device adopts row symmetrical above and below
The combined hairbrush roller of cloth is cleared up to crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller
Density in planting is 10%, and 16 density in planting of the second brush roll is 30%.
Bristle hybrid mode is uniformly mixed using the bristle in two kinds of hair footpaths of hair footpath 0.16mm doping hair footpath 0.10mm, is formed
Mixed hair, is fabricated to the brush roll of mixed wool type.The ratio of mixed hair is：Coarse wool (hair footpath 0.15mm):Fine, soft fur (hair footpath 0.10mm)
=5:5.
Bristle original length 45mm, with persistently carrying out for casting, the bristle of brush roll can gradually be worn and shorten, together
When crystallization roll also can gradually expanded by heating, in order to ensure the effect of roll surface cleaning, need the bristle for ensureing brush roll to be pressed against
Amount of bow on crystallization roll surface keeps constant.The pressure sensor that can be carried by roll surface cleaning device, adjusts hydraulic pressure
Cylinder action, it is constant to guarantee the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface.Under the premise of this, with brush
Staple length l gradually shortens, and brush roll is pressed against the pressure P of crystallization roll surface and gradually increases, as shown in Figure 3.Bristle is pressed against
Amount of bow Δ l on crystallization roll surface is controlled in 10-16mm.Bristle lengths l be less than 30mm ± 2mm when, answer it is offline more
Moult brush roll.
During work, the direction of rotation of brush roll is had a significant impact to the effect that crystallization roll roll surface is cleared up, the direction of rotation of brush roll
The direction contrary 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, dust collecting system 15 is disposed with, as shown in Fig. 2 being used in production to roll surface
The dust and particulate matter for clearing is collected, and can substantially improve operating environment.
After the selection of the type selecting and technological parameter of said brush roller, effect overall merit is carried out, roll surface cleaning effect is commented
Valency result shows：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 to show：After long time running test (>30min), abrasion of the brush roll to crystallization roll roll surface does not have
Affect.
Comparative example 3
In production process, in the outside arrangement roll surface cleaning device of crystallization roll 6, roll surface cleaning device adopts row symmetrical above and below
The combined hairbrush roller of cloth is cleared up to crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller
Density in planting is 10%, and 16 density in planting of the second brush roll is 10%.
Bristle hybrid mode is uniformly mixed using the bristle in two kinds of hair footpaths of hair footpath 0.15mm doping hair footpath 0.10mm, is formed
Mixed hair, is fabricated to the brush roll of mixed wool type.The ratio of mixed hair is：Coarse wool (hair footpath 0.15mm):Fine, soft fur (hair footpath 0.10mm)
=6:4.
Bristle original length 45mm, with persistently carrying out for casting, the bristle of brush roll can gradually be worn and shorten, together
When crystallization roll also can gradually expanded by heating, in order to ensure the effect of roll surface cleaning, need the bristle for ensureing brush roll to be pressed against
Amount of bow on crystallization roll surface keeps constant.The pressure sensor that can be carried by roll surface cleaning device, adjusts hydraulic pressure
Cylinder action, it is constant to guarantee the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface.Under the premise of this, with brush
Staple length l gradually shortens, and brush roll is pressed against the pressure P of crystallization roll surface and gradually increases, as shown in Figure 3.Bristle is pressed against
Amount of bow Δ l on crystallization roll surface is controlled in 10-16mm.Bristle lengths l be less than 30mm ± 2mm when, answer it is offline more
Moult brush roll.
During work, the direction of rotation of brush roll is had a significant impact to the effect that crystallization roll roll surface is cleared up, the direction of rotation of brush roll
The direction contrary 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, dust collecting system 15 is disposed with, as shown in Fig. 2 being used in production to roll surface
The dust and particulate matter for clearing is collected, and can substantially improve operating environment.
After the selection of the type selecting and technological parameter of said brush roller, effect overall merit is carried out, roll surface cleaning effect is commented
Valency result shows：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 to show：After long time running test (>30min), abrasion of the brush roll to crystallization roll roll surface does not have
Affect.
Comparative example 4
In production process, in the outside arrangement roll surface cleaning device of crystallization roll 6, roll surface cleaning device adopts row symmetrical above and below
The combined hairbrush roller of cloth is cleared up to crystallization roll roll surface, as shown in Figure 2.First brush roll 14 of combined hairbrush roller
Density in planting is 40%, and 16 density in planting of the second brush roll is 10%.
Bristle of the bristle using hair footpath 0.15mm；Bristle original length 46mm, with persistently carrying out for casting, brush roll
Bristle can gradually be worn and shorten, while crystallization roll also can gradually expanded by heating, in order to ensure the effect of roll surface cleaning,
Need to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface keeps constant.Can be by roll surface cleaning device certainly
The pressure sensor of band, adjusts hydraulic cylinder action, to guarantee that the bristle of brush roll is pressed against the amount of bow crystallized on roll surface
It is constant.Under the premise of this, as bristle lengths l gradually shorten, brush roll is pressed against the pressure P of crystallization roll surface gradually
Increase, 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.Bristle lengths l
During less than 30mm ± 2mm, offline replacing brush roll is answered.
During work, the direction of rotation of brush roll is had a significant impact to the effect that crystallization roll roll surface is cleared up, the direction of rotation of brush roll
The direction contrary 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, dust collecting system 15 is disposed with, as shown in Fig. 2 being used in production to roll surface
The dust and particulate matter for clearing is collected, and can substantially improve operating environment.
After the selection of the type selecting and technological parameter of said brush roller, effect overall merit is carried out, roll surface cleaning effect is commented
Valency result shows：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 to show：After long time running test (>30min), brush roll has heavy wear to crystallization roll roll surface
Vestige, this is that production is not permitted.
Comparative example 5
In production process, in the outside arrangement roll surface cleaning device of crystallization roll 6, roll surface cleaning device adopts row symmetrical above and below
The combined hairbrush roller of cloth is cleared up to crystallization roll roll surface, as shown in Figure 2.The first time brush roll of combined hairbrush roller
14 density in planting are 30%, and 16 density in planting of the second brush roll is 10%.
Bristle of the bristle using hair footpath 0.10mm；Bristle original length 40mm, with persistently carrying out for casting, brush roll
Bristle can gradually be worn and shorten, while crystallization roll also can gradually expanded by heating, in order to ensure the effect of roll surface cleaning,
Need to ensure that the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface keeps constant.Can be by roll surface cleaning device certainly
The pressure sensor of band, adjusts hydraulic cylinder action, to guarantee that the bristle of brush roll is pressed against the amount of bow crystallized on roll surface
It is constant.Under the premise of this, as bristle lengths l gradually shorten, brush roll is pressed against the pressure P of crystallization roll surface gradually
Increase, 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.Bristle lengths l
During less than 30mm ± 2mm, offline replacing brush roll is answered.
During work, the direction of rotation of brush roll is had a significant impact to the effect that crystallization roll roll surface is cleared up, the direction of rotation of brush roll
The direction contrary 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, dust collecting system 15 is disposed with, as shown in Fig. 2 being used in production to roll surface
The dust and particulate matter for clearing is collected, and can substantially improve operating environment.
After the selection of the type selecting and technological parameter of said brush roller, effect overall merit is carried out, roll surface cleaning effect is commented
Valency result shows：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 to show：After long time running test (>30min), abrasion of the brush roll to crystallization roll roll surface does not have
Affect, while finding there is hair down and local wear phenomenon using the outward flange bristle of the brush roll of fine, soft fur
In sum, only presently preferred embodiments of the present invention, not for limiting the scope of present invention enforcement, it is all according to
The impartial change carried out by shape, construction, feature and spirit described in scope of the invention as claimed and modification, all should include
In scope of the presently claimed invention.
Claims (10)
1. it is a kind of improve surface quality of casting belt device, by clean crystallization roll to improve the surface quality of the Cast Strip, its
It is characterised by, including the first brush roll and second brush roll of the radial symmetric distribution along the crystallization roll, described first mao
The bristle density in planting of brush roll is 30%-40%, and the bristle density in planting of second brush roll is 10%-20%, described first mao
Brush roll is 0.08-0.12mm by the coarse wool and hair footpath that hair footpath is 0.15-0.20mm with the bristle of second brush roll
Fine, soft fur mix, the ratio of the coarse wool and the fine, soft fur is 6:4-8:2.
2. it is according to claim 1 improve surface quality of casting belt device, it is characterised in that the coarse wool with it is described
The ratio of fine, soft fur is 7：3.
3. it is according to claim 1 improve surface quality of casting belt device, it is characterised in that first brush roll
Bristle lengths and the bristle lengths of second brush roll be 40-50mm.
4. it is according to claim 1 improve surface quality of casting belt device, it is characterised in that first brush roll
And be provided with pressure sensor in second brush roll, first brush roll and second brush roll with
Hydraulic cylinder is connected, and can be moved towards close or away from the crystallization roll direction by the Driven by Hydraulic Cylinder.
5. it is according to claim 1 improve surface quality of casting belt device, it is characterised in that first brush roll
And the material of the bristle of second brush roll is stainless steel.
6. it is according to claim 1 improve surface quality of casting belt device, it is characterised in that the cleaning plant is also
Including dust collecting system, the powder produced when working for collecting first brush roll and second brush roll
Dirt.
7. it is a kind of improve surface quality of casting belt method, for clearing up to crystallization roll, it is characterised in that along crystallization
The radial symmetric of roller arranges the first brush roll and the second brush roll, the bristle of first brush roll and second brush roll
Density in planting is different, and its bristle is mixed with fine, soft fur using coarse wool, during crystallization roll rotation, the first brush roll and
Second brush roll is cleared up to which respectively.
8. it is according to claim 7 improve surface quality of casting belt method, it is characterised in that by hydraulic cylinder distinguish
The pressure of first brush roll and second brush roll to the crystallization roll is adjusted, by pressure sensor, is adjusted
Section hydraulic cylinder action, it is constant to guarantee the amount of bow that the bristle of brush roll is pressed against on crystallization roll surface.
9. it is according to claim 8 improve surface quality of casting belt method, it is characterised in that first brush roll
And the direction of rotation of second brush roll is contrary with the direction of rotation of the crystallization roll.
10. it is according to claim 7 improve surface quality of casting belt method, it is characterised in that the first time hair
The amount of bow that brush roll and second brush roll are 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 CN106552907B (en) | 2018-08-10 |
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| 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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| CN106552907B (en) | 2018-08-10 |
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