CN1883833A - Multi-roller multi-frame reversing cold mill and rolling method therefor - Google Patents
Multi-roller multi-frame reversing cold mill and rolling method therefor Download PDFInfo
- Publication number
- CN1883833A CN1883833A CN 200510077281 CN200510077281A CN1883833A CN 1883833 A CN1883833 A CN 1883833A CN 200510077281 CN200510077281 CN 200510077281 CN 200510077281 A CN200510077281 A CN 200510077281A CN 1883833 A CN1883833 A CN 1883833A
- Authority
- CN
- China
- Prior art keywords
- roll
- rolling
- mill
- roller
- reversible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Metal Rolling (AREA)
Abstract
The invention discloses a device for metal plate belt rolling and method of rolling the same, especially a multi-roller multi-frame reversible cold rolling mill and method of rolling the same. The device includes multi-roller reversible rolling mill set, which includes at least two multi-roller reversible mill with roller number not less than 10. First and second reversible coiler is separately located on two sides of the rolling mill set. The rolling mill can flexible deal with replacing and adjusting of variety and specification, is adapt for preparation of multi-steels, multi-specification batch product, and is easy to satisfy the demands of market. Profile shape of strip steel is straight, thickness difference of transverse section is smaller than +-0.003 mm, rolling speed reaches 1000 m/min, and forming ratio reaches 95 %.
Description
Technical field
The present invention relates to rolling equipment of a kind of metal plates and strips and milling method thereof, particularly a kind of multi-roller multi-frame reversing cold mill and milling method thereof.The pressure processing field that belongs to metal material.
Background technology
Arrange that from frame the old model of cold-rolling mill all is single chassis 2,4,6 roll form, production technology is the production of rolling reversible by individual production development.It is rolling that reversible rolling is that the band steel reciprocally carries out multi-pass on frame, like this each passage all will starting, acceleration and deceleration, parking and commutation.Therefore reversible rolling has limited the raising of mill speed and production capacity.
For pursuing high efficiency board rolling equipment and technology, developed the milling train tandem has been disposed.Make rolling stock flow to down operation from last operation, milling train is not shut down and thickness of slab is once changed to the continuous rolling mode of target size, i.e. tandem mill.The band tandem mill is that a kind of output is big, the cold-rolling mill that efficient is high, present large batch of low-carbon (LC) and structure cold-strip steel and tin plate processing are produced by four rollers or six-roll type cold continuous rolling with the band steel capital, rolling thickness adopts four frame tandem mills when big, rolling thickness adopts five frames or six frame tandem mills during than book.The shortcoming of band tandem mill is that investment is big, kind is more single.
For cost performance and the flexibility that improves cold-rolling mill, people attempt to improve the structure of existing milling train to satisfy different needs.JP-A-56-59507 discloses a kind of reversible mill frame of two frames, this rolling-mill housing has two pairs of coiling machines, first pair of coiling machine downtime, second pair of coiling machine handled and treated rolling steel plate, to keep milling equipment to continue running, after these mill milling 6 passages, the thickness that obtains sheet material is about 0.3-0.4mm.
ZL94103440 improves said structure, it relates to a kind of equipment and milling method of cold rolling banded rolled piece, the equipment of this cold rolling banded rolled piece comprises two reversible mill frames (2,3), this rolling-mill housing (2,3) the place ahead is provided with a reversible coiling machine (8), its rear is provided with a reversible coiling machine (9), for being rolled process, described reversible frame can be adjusted respectively corresponding to front and back passage in succession, and reversible mill frame (2,3) is equipped with the working roll quick replacement device for this reason, working roll with box structure working roll member can be changed, to change the working roll of different-diameter and/or different roughness.Concrete structure is referring to accompanying drawing 1, but only relates to the reversible two-shipper frame tandem mill milling train of 4 rollers and 6 rollers in its specification and the accompanying drawing.
The structure of 4 rollers and 6 roller mills itself and performance have determined can not be very thin through its rolling thickness that obtains product, therefore, adopts the reversible mill of ZL94103440 patented technology will expect very thin sheet material, needs the rolling of process multi-pass.Though this patent itself does not disclose the thickness of the rolling back of multi-pass product, but because this patent only is the quantity and the fast roll changing structure of coiling machine with respect to the improvement of JP-A-56-5950, therefore, can affirm, this milling train for the sheet material multi-pass rolling after, the thickness of sheet material will not have significant improvement.
Also there are the following problems for above-mentioned two patents: obtain the sheet metal that thickness is 0.3-0.4mm, need at least 6 passages rolling, because reversable mill is in every time the operation of rolling, all need through the starting--technical process of acceleration, deceleration--parking---commutation, mill speed and production capacity are all very limited, and the milling train of this structure is promptly uneconomical, and is long owing to the changeover portion time simultaneously, the section of thickening increases, and strip quality descends and is difficult to obtain the sufficiently high plate product of precision.
Summary of the invention
The object of the present invention is to provide a kind of multi-roller multi-frame reversing cold mill, this milling train can be according to steel, specification, the raw material quality is determined rolling pass, be easy to adapt to the material of rolled piece, width, thickness, the variation that volume is heavy, can deal with the replacing and the adjustment of different cultivars specification flexibly, be fit to many steel grades, many specifications, greatly, in, the production of be pilot, as rolling as thin as a wafer with the silicon steel of steel and distortion difficulty, stainless steel, and high-intensity chrome-nickel material, plate shape and quality are good, the lumber recovery height satisfies the demand in different market with a cover unit under low investment.
Another object of the present invention is to provide a kind of multi-roller multi-frame reversible cold-rolling milling method, this method drafts is big, rolled products cost and energy consumption is low, be suitable for face width.
To achieve these goals, the technical solution used in the present invention is: multi-roller multi-frame reversible cold-rolling unit, described cold rolling unit comprises the reversible mill unit, the both sides of reversible mill unit are provided with the first and second reversible coiling machines respectively, described reversible mill group comprises at least two reversible mills, described reversible mill is the multi-roll mill of roll number more than or equal to 10 rollers, and the quantity of milling train is the 2-4 platform.
Multi-roll mill of the present invention comprises that rolling-mill housing, upper and lower roller base, upper and lower roll roller system are separately positioned in the upper and lower roller base, at least two screwdown gears of at least one side setting of upper and lower roller base, described screwdown gear is arranged on above and/or under the roller base, and makes and be arranged on depressing power to small part and being applied to position outside the width that is rolled sheet material of outermost two screwdown gears.Adopt this screw-down structure, upper working rolls and lower working rolls is being depressed under the power effect, can form a closed parabola pass, and rolled piece is enclosed in the working roll, has controlled strip sideslip, broken belt effectively, helps the raising of plate rolling speed simultaneously.
Depress the undue attenuate of limit portion that causes and the defective of kink shape though this pressure part has overcome roll neck in the prior art, it in fact also exists band steel mid portion to depress than narrowing toward each end, and just limit portion is still thin partially than the middle part.
In order to overcome the undue attenuate of limit portion that above-mentioned screw-down structure also exists, among the present invention, between above-mentioned two screwdown gears, also be provided with at least one the 3rd screwdown gear, above-mentioned screwdown gear evenly distributes on roller base.The 3rd screwdown gear reduces the interior thickness of sheet material, like this, because reducing of the limit portion of plate and middle part and whole horizontal thickness difference improved the overall precision of strip.
Roll in this multi-roll mill is the tower rollers system with respect to the upper and lower symmetrical distribution of rolled piece, and described tower rollers is to comprise working roll, middle support rollers and outer backing roll, and this skin backing roll is a backing cloth bearing roller.Wherein, the diameter of outside backing roll like this, can more reasonably distribute roll-force greater than the diameter of medial support roller in the preferred outer backing roll, prolongs the service life of backing roll.For example, for the 12 roller tower rollers system that 1-2-3 distributes, adopt the backing cloth bearing roller of two large diameter backing cloth bearing rollers and a minor diameter in its outermost layer backing cloth bearing roller.
Multi-roll mill among the present invention is the use of uniting of 12 rollers, 20 rollers or 30 roller mills and above-mentioned multi-roll mill, wherein 12 roller mills are particularly suitable for rolling low carbon steel strip, 20 roller mills are particularly suitable for rolling stainless or silicon steel thin belt, and 30 roller mills are particularly suitable for rolling functional material and are with steel as thin as a wafer; Certainly, count that uniting of milling train uses and multi-pass rolling, can enlarge the adjustable type of the present invention and the scope of application by identical or different roll.
The quantity of milling train is preferably the 2-4 platform among the present invention, passes through 2-3 rolling process like this, and promptly 2-12 passage is rolling, promptly can obtain product as thin as a wafer.This milling train takes up an area of that face machine is few, small investment, recruitment is few, energy consumption is low, and the cost of sheet material per ton reduces 15%--30% at least, and the output of the output of two All-China Federation of Taiwan Compatriots's milling trains and two single reversing mills is suitable.
Among the present invention, the roll number of milling train is identical in the preferred unit, but in some cases, it also is significant adopting different roll numbers respectively, for example 12--20 roller two-shipper, three machines or four machines and 12-12-20-30 roller reversible cold-rolling mill.
For more convenient change roll number on existing unit, rolling-mill housing of the present invention can be multi-functional rolling-mill housing, and this frame can change the quantity of roll as required.
Multi-roll mill of the present invention also comprises shape adjusting device, and described template adjusting device comprises one of following shape adjusting device or its combination:
(1) the outer backing roll in the upper and lower roll roller system is the roll that multisection type back lining bearing and mandrel are assembled;
(2) supporting roller bearing is to there being roll crown adjusting devices such as gear eccentric bushing;
(3) first intermediate calender rolls play mechanisms;
(4) intermediate calender rolls roller.
Template adjusting device among the present invention is preferably in the top roll case or in the lower roll case, at least one place is provided with direct acting type plate shape control device, described template control device is a hydraulic cylinder, and the piston of this hydraulic cylinder is applied directly to active force on the mandrel in the backing cloth bearing roller.
Preferred this direct acting type plate shape control device comprises a hydraulic pressure seat, be provided with several hydraulic cylinders in this hydraulic pressure seat, each hydraulic cylinder has a piston rod, the piston rod that this hydraulic pressure stretches out is applied directly to active force the mandrel of backing cloth bearing roller on by a top board active force, perhaps the piston rod that stretches out of this hydraulic cylinder is applied directly to active force on the mandrel of backing cloth bearing roller, by changing the active force of hydraulic cylinder and piston at the same time or separately, directly adjust the deflection deformation of roll.
Direct acting type plate shape control device of the present invention also can be several hydraulic cylinders, each hydraulic cylinder has a piston rod, the piston rod that this hydraulic pressure stretches out is applied directly to active force the mandrel of backing cloth bearing roller on by a top board active force, perhaps the piston rod that stretches out of this hydraulic cylinder is applied directly to active force on the mandrel of backing cloth bearing roller, by changing the active force of hydraulic cylinder and piston at the same time or separately, directly adjust the deflection deformation of roll.
Multi-roller multi-frame reversible cold-rolling milling method of the present invention comprises the steps:
(1) blank takes the lead to stretch out from the first coiling machine uncoiling, and is wound into second coiling machine of outlet side behind many mill roll-gaps by closure or openness, and forms suitable tension force;
(2) defeat down screwdown gear according to depressing of setting, starting multi-roller multi rolling mill, it is rolling that raising speed is carried out first rolling process;
(3) when coil of strip is about to roll, the milling train ramp to stop makes magnetic tape trailer off-position on the entrance side coiler mandrel;
(4) adjust the second rolling process drafts, roll gap, tension force, raising speed then, it is rolling that milling train carries out the commutation of second rolling process;
(5) repeat said process to reaching finished product thickness.
Multi-roller multi-frame reversible cold-rolling milling method of the present invention, also can adopt following steps:
(1) roll gap with first milling train opens slightly, blank takes the lead to stretch out from the first coiling machine uncoiling, during to the working roll of first milling train, by starting multi-roller multi rolling mill, defeat down screwdown gear according to depressing of setting, make rolled piece pass through corresponding multi-roller multi rolling mill down successively, and be wound into second coiling machine of outlet side, form suitable tension force and continue the operation of rolling rolling;
(2) when coil of strip is about to roll, the milling train ramp to stop makes magnetic tape trailer off-position on the entrance side coiler mandrel;
(3) adjust the second rolling process drafts, roll gap, tension force, raising speed then, it is rolling that milling train carries out the commutation of second rolling process;
(4) repeat said process to reaching finished product thickness.
In the rolling method, described suitable tensile stress size is 10-20kg/mm
2
Though disclose the reversible mill machine of 2-6 roller two frames in the prior art and adopted the milling method of this milling train, and the single chassis multiple roll reversible mill greater than 10 rollers is used widely industrial having obtained, but, can not directly prior art be applied to the multi-roll mill of roll number, and obtain multi-roller multi-frame reversible cold-rolling unit of the present invention more than or equal to 10 rollers.This is that its nip angle can realize nipping of first passage and rolling because working roll, the backing roll of four-high mill are very big; And the work roll diameter of multi-roll mill is all less, generally between Φ 10～200mm, barrel length reaches 10～25 with the diameter ratio, because multi-roll mill can not be nipped voluntarily, and be difficult to preset roll gap, when exploitation multi-roller multi stand reversible rolling mill, what at first face is the problem of how blank being taken the lead to enter multi-roll mill.In addition, when also needing to overcome each passage end, take the lead to bite the bigger problem of yield loss that reel causes for making.
The multi-roller multi stand reversible rolling mill neither simple two or many multiple roll reversible mills combination.Multi-roller multi stand reversible rolling mill of the present invention except that the advantage with general two-shipper stand reversible cold-rolling mill, more can be dealt with the replacing and the adjustment of description flexibly, is fit to the production of many steel grades, many specifications bulk article, satisfies the demand in market easily.After the eighties in 20th century, the specialization of producing along with stainless steel, and the order of market demands small lot, many kinds, many specifications, the steel grade that milling train of the present invention is produced is more, can both produce as carbon steel, low-alloy steel, mild steel, silicon steel, high-strength steel etc.The profile straight, thick poor (being deviation) that shuts out wide flat steel is less than ± 0.003 or 0.005mm, and mill speed can reach 1000m/min or higher, and lumber recovery reaches 95%, the production capacity height; And multi-roller multi stand reversible rolling mill of the present invention depresses power and power reduces 1/3---1/2 than 4,6 reversible mills, and energy consumption reduces 20-50%, and milling train volume of the present invention is little, in light weight, only is the 1/3-1/2 of 4 or 6 roller mills.
Describe the present invention in detail below in conjunction with drawings and Examples, described enforcement is used in understands the present invention rather than restriction the present invention.
Description of drawings
Accompanying drawing 1, the schematic diagram of the two-shipper stand reversible rolling mill of prior art;
Accompanying drawing 2,12 roller Double Housing Reversible Cold Rolling mill schematic diagrames of the present invention;
Accompanying drawing 3,20 roller Double Housing Reversible Cold Rolling mill schematic diagrames of the present invention;
Accompanying drawing 4,12 rollers, three frame reversable cold-rolling machine schematic diagrames of the present invention;
Accompanying drawing 5,12-12-20-30 roller four frame reversable cold-rolling machine schematic diagrames of the present invention;
Accompanying drawing 6, screwdown gear of the present invention and backing cloth bearing roller schematic diagram;
Accompanying drawing 7, multiple spot screwdown gear schematic diagram of the present invention;
Accompanying drawing 8, roll crown adjusting device schematic diagrames such as gear eccentric bushing of the present invention;
Accompanying drawing 9, the various plate shape schematic diagrames of depressing;
A, roll neck depress the plate shape that obtains; B moves the plate shape that obtains in depressing;
Two of c the present invention depress the plate shape that obtains, and d, multiple spot of the present invention depress the plate shape that obtains;
Accompanying drawing 10, the first intermediate calender rolls play structural scheme of mechanism of the present invention;
Accompanying drawing 11, direct acting type plate shape control device of the present invention;
Accompanying drawing 12, multi-roller multi rolling mill of the present invention roll the milling method flow chart:
Referring to accompanying drawing, wherein accompanying drawing 6,7,10,11 is equivalent to the cutaway view at a milling train middle part among Fig. 2.Accompanying drawing 1 is the schematic diagram of the disclosed two-shipper stand reversible of ZL94103440 cold-rolling mill, and it is made up of two reversible mill frames 2,3.Rolling-mill housing 2,3 is the four-high mill frame, comprises work roll 4,4 '; 5,5 ' and backing roll 6,6 '; 7,7 '.These two reversible mill frames 2,3 are located between two coiling machines 8,9, and they can bring Necessary Tensility for batching with uncoiling in reversible work, and 10 is uncoiler.The milling train of this patent is the reversible two-shipper frame tandem mill milling train of 4 rollers and 6 rollers, is suitable for producing the production of thickness less than the 0.3-0.4mm metal plates and strips.
Accompanying drawing 2 is 12 roller Double Housing Reversible Cold Rolling mill schematic diagrames of the present invention; It comprises two 12 cold mills 100,200, and the both sides of reversible mill unit are provided with the first and second reversible coiling machines 101 and 102,103 uncoilers respectively; Milling train 100 comprises that rolling-mill housing 110, upper and lower roller base 120, upper and lower roll roller system are separately positioned in the upper and lower roller base, at least one side of upper and lower roller base 120 is provided with two screwdown gears 130, described screwdown gear 130 is arranged on the roller base 120 or descends, also can be provided with simultaneously, can adjust roll line more neatly like this upper and lower; Described roll is with respect to the tower rollers of rolled piece 50 upper and lower symmetrical distributions system, and described tower rollers system comprises working roll 140, two middle support rollers 150 and three outer backing rolls 160, and this skin backing roll 160 is a backing cloth bearing roller, referring to accompanying drawing 6.Outer backing roll 160 employing backing cloth bearing rollers can be adjusted plate shape and roll-force more flexibly, effectively.Outer backing roll 160 comprises 3 backing cloth bearing rollers---be positioned at two backing cloth bearing rollers 161 in the outside and be positioned at middle backing cloth bearing roller 162, wherein, the diameter of two backing cloth bearing rollers 161 outside being positioned at is greater than the backing cloth bearing roller 162 in the middle of being positioned at.Like this, roll-force more reasonably can be distributed, prolong the service life of backing roll.Correspondingly, milling train 200 is provided with frame 210, upper and lower roller base 220, screwdown gear 230, working roll 240, middle support rollers 250 and outer backing roll 260, this skin backing roll 260 is the backing cloth bearing roller with accompanying drawing 8, outer backing roll 260 comprises two backing cloth bearing rollers that are positioned at the outside and is positioned at middle backing cloth bearing roller, wherein, be positioned at the diameter of two backing cloth bearing rollers in the outside greater than the backing cloth bearing roller in the middle of being positioned at.Above-mentioned tower rollers is to support, and rigidity is big, rolling thinner, product precision height.
Accompanying drawing 3 is 20 rollers, three frame reversable cold-rolling machine schematic diagrames of the present invention; It comprises the cold-rolling mill 300 of 2 20 roller serial connections, 400, same 301 and 302 is the first and second reversible coiling machines, milling train 300 comprises frame 310, on, lower roller base 320, screwdown gear 330, the structure of this milling train and design and accompanying drawing 2 basic identical, difference is that the roll of this milling train 300 is with respect on the rolled piece 50, be the tower rollers system that 1-2-3-4 is symmetrically distributed down, this tower rollers system comprises working roll 340, middle support rollers 350 and 351, outer backing roll 360, this skin backing roll 360 is the backing cloth bearing roller with accompanying drawing 6, outer backing roll 360 comprises two backing cloth bearing rollers 361 that are positioned at the outside and is positioned at two middle backing cloth bearing rollers 362, wherein, be positioned at the diameter of two backing cloth bearing rollers 361 in the outside greater than two backing cloth bearing rollers 362 in the middle of being positioned at.Milling train 400 correspondences are provided with structure and the connected mode identical with milling train 300.
The diameter of the back lining bearing among the present invention also can be identical.
Accompanying drawing 4 is 12 rollers, three frame reversable cold-rolling machine schematic diagrames of the present invention; Its composition, structure and connected mode and accompanying drawing 2 are basic identical.
Accompanying drawing 5 is 12-12-20-30 roller four frame reversable cold-rolling machine schematic diagrames of the present invention; It is equivalent to the combination of accompanying drawing 2,3.This reversible mill is particularly suitable for the compound steel of rolling ultra-thin high strength.
Among the present invention, work roll diameter is Φ 10～150mm, and barrel length is 10～40 with the diameter ratio; The ratio of the diameter of backing roll and work roll diameter is 3-10, the rigidity of roller system increases greatly like this, the roller base of cooperation high stiffness, the complete machine rigidity increases greatly, therefore multi-roller multi rolling mill of the present invention can rolling thickness be the strip material of 0.2mm even thinner surfacing, and the flakiness ratio of band can be 10000--36000.
The multi-roll mill of company such as Sendzimir, Mitsubishi is partly depressed at roll neck usually in the prior art, forms parabola shaped enclosed construction between roll neck.The advantage that roll neck is depressed is that roller system is stable, is not prone to sideslip and broken belt, and still, roll neck is depressed owing to advocate to be applied to roll neck, and rolled piece is bigger at the thickness deviation of width, and there is the defective of undue attenuate of limit portion and kink shape in plate shape.But it in fact also exists band steel mid portion to depress than narrowing toward each end, and just limit portion is still thin partially than the middle part.Depress the problems referred to above of existence in order to overcome roll neck, trial above and/or under in just having screwdown gear the sixties, moving and be arranged on the roller base, as US4212504, GB2199275, US2907237, ZL89101393 etc., but, above-mentioned trial is many to be arranged on screwdown gear within the width of rolled piece, and the plate that obtains is a W shape on width, has deviation equally; Simultaneously, in the mode of depressing of moving cause the opening hole shape, be prone to strip sideslip and broken belt, downtime is long, production efficiency is low.
Among the present invention, two screw-downs 131,132 in the screwdown gear 130 are arranged on above and/or under the roller base 120, and make the outermost of screw-down 131,132 partly be wider than rolled piece 50, referring to Fig. 6, wherein 170 is milling train and frame.Like this, the power of partly depressing is applied to the position outside the width that is rolled sheet material, like this, upper and lower working roll is being depressed under the power effect, form a closed parabola pass, rolled piece is enclosed in the closed pass of working roll formation, has controlled strip sideslip, broken belt effectively, help the raising of plate rolling speed simultaneously; On the other hand, if the stage area of screwdown gear is enough big, can solve the problem of product transverse thickness difference substantially.In addition, at least one the 3rd screwdown gear 133 can be set further also, above-mentioned screwdown gear evenly distributes on roller base, referring to Fig. 7.The 3rd screwdown gear reduces the interior thickness of sheet material, like this, because reducing of the limit portion of plate and middle part and whole horizontal thickness difference improved the overall precision of strip, a plurality of screwdown gear (not shown) can also be set with further adjustment plate shape.Fig. 9 has illustrated the shape of the various sheet materials of depressing that obtain, and wherein, Fig. 9 a is the plate shape that roll neck is depressed the undue attenuation of limit portion that obtains; Fig. 9 b moves the W pass that obtains in depressing; Fig. 9 c depresses the parabola pass that obtains for two of the present invention, and Fig. 9 d depresses the pass that obtains for multiple spot of the present invention.Among the present invention, described screwdown gear preferably adopts hydraulic pressure to depress.
Accompanying drawing 6 has also been illustrated the structure of the back lining bearing that adopts among the present invention simultaneously, and it comprises mandrel 165 and be arranged on a plurality of back lining bearings 164 on the mandrel that this backing cloth bearing roller is sat mutually with roll according to the known mode of prior art and assembled.
In the prior art, in order to improve the precision of sheet material, various shape adjusting devices have been adopted, for example: previously described outer backing roll is the roll that multisection type back lining bearing and mandrel are assembled, Fig. 8 has illustrated the further correspondence of supporting roller bearing that roll crown adjusting devices 180 such as gear eccentric bushing are set, and this roll crown adjusting device 180 is also controlled by a hydraulic means.On behalf of this place, the arrow that Fig. 8 plants also can be provided with roll crown adjusting device as 180.Figure 10 has illustrated the first intermediate calender rolls play mechanism and control corresponding system and hydraulic jack 600 schematic diagrames, and the intermediate calender rolls axial moving mechanism can make two intermediate calender rolls move axially symmetrically, thereby reaches the purpose of adjusting template.
Intermediate calender rolls roll-bending device of the present invention is generally at the two ends of intermediate calender rolls hydraulic jack is set, and adjusts template by the active force of adjusting hydraulic jack.
Disclosed shape adjusting device in the prior art all is that active force is acted on saddle or other structure so that the deflection deformation of breaker roll is adjusted indirectly, and its effect is very limited.Among the present invention, preferably in the top roll case and/or in the lower roll case, at least one place is provided with direct acting type plate shape control device 500, this direct acting type plate shape control device comprises a hydraulic pressure seat 510, it is provided with several hydraulic cylinders 513, each hydraulic cylinder has a piston rod 511, referring to accompanying drawing 11, the piston rod 511 that this hydraulic cylinder 513 stretches out is applied directly to active force the mandrel 165 of backing cloth bearing roller 160 on by a top board 512 active force, perhaps the piston rod 511 that stretches out of this hydraulic cylinder 513 is applied directly to active force (not shown) on the mandrel 165 of backing cloth bearing roller 160, by changing the active force of hydraulic cylinder 510 and piston 511 at the same time or separately, directly adjust the deflection deformation of roll.The active force of adjusting deflection deformation is not suffered a loss substantially like this, can more effectively control the deflection deformation of roll, and in one embodiment of the invention, preferred described top board 512 is stuck on the mandrel 165 of backing cloth bearing roller 160 for fork-shaped.
Accompanying drawing 12 rolls the milling method flow chart for multi-roller multi rolling mill of the present invention: for obtaining plate, the band that thickness is 0.1-0.6mm, the thickness of blank is 2-5mm, blank is taken the lead to batch 101 machine uncoilings from first stretch out, second coiling machine 102 that can be wound into outlet side by many mill roll-gaps of closure or openness forms suitable tension force; This tension force is generally 10-20kg/mm
2, this process is also referred to as wears band, and its speed is generally 10-30m/min far below mill speed, and low speed can make crossing process stable; After wearing the band back and forming suitable tension force, defeat down screwdown gear 130 according to depressing of setting, simultaneously speed is elevated to predetermined speed, general draught pressure is 800-15000KN, mill speed is 500-1600m/min, when judging that by second coiling machine, 102 strip layer counting numbers coil of strip is about to roll, and the milling train ramp to stop, make magnetic tape trailer off-position on the entrance side coiler mandrel, it is rolling to finish first rolling process; Adjust the second rolling process drafts, roll gap, tension force, raising speed then, it is rolling that the process that milling train etc. repeat above-mentioned first rolling process is carried out the commutation of second rolling process; Repeat said process to reaching finished product thickness.
Among the present invention, also can not adopt the method for wearing band, but the roll gap of first milling train is opened slightly, blank takes the lead to stretch out from 101 uncoilings of first coiling machine, during to the working roll of first milling train 100, and starting multi-roller multi rolling mill, under low speed, defeat screwdown gear down according to depressing of setting, make rolled piece rolling down successively by corresponding multi-roller multi rolling mill, and be wound into second coiling machine of outlet side, form suitable tension force after raising speed continue the aforesaid operation of rolling.Be provided with the strip guider between the frame, not shown in the figures.
Claims (11)
1. multi-roller multi-frame reversible cold-rolling unit, described cold rolling unit comprises the reversible mill unit, the both sides of reversible mill unit are provided with the first and second reversible coiling machines respectively, described reversible mill is provided with the roll line adjusting device corresponding to the passage of front and back, it is characterized in that described reversible mill group comprises at least two reversible mills, described reversible mill is the multi-roll mill of roll number more than or equal to 10 rollers.
2. cold rolling unit according to claim 1, it is characterized in that described multi-roll mill comprises that rolling-mill housing, upper and lower roller base, upper and lower roll roller system are separately positioned in the upper and lower roller base, at least two screwdown gears of at least one side setting of upper and lower roller base, described screwdown gear is arranged on above and/or under the roller base, and makes and be arranged on depressing power to small part and being applied to position outside the width that is rolled sheet material of outermost two screwdown gears.
3. cold rolling unit according to claim 2 is characterized in that also being provided with at least one the 3rd screwdown gear between described two screwdown gears, and above-mentioned screwdown gear evenly distributes on roller base.
4. cold rolling unit according to claim 1 is characterized in that the roll in the described multi-roll mill is the tower rollers system with respect to the upper and lower symmetrical distribution of rolled piece, and described tower rollers is to comprise working roll, middle support rollers and outside backing roll.
5. cold rolling unit according to claim 1 is characterized in that described multi-roll mill is 12 rollers, 20 rollers or 30 roller mills.
6. cold rolling unit according to claim 1 is characterized in that the roll number of every milling train in the described multi-roll mill unit is identical or different.
7. cold rolling unit according to claim 1, the quantity that it is characterized in that milling train is the 2-4 platform.
8. according to any one described cold rolling unit of claim 1-3, it is characterized in that described multi-roll mill comprises shape adjusting device, described shape adjusting device comprises one of following structure or its combination:
(1) the outer backing roll in the upper and lower roll roller system is multisection type back lining bearing and the mandrel roll that is assembled;
(2) supporting roller bearing is to there being roll crown adjusting devices such as gear eccentric bushing;
(3) first intermediate calender rolls play mechanisms;
(4) intermediate calender rolls roll-bending device.
9. according to any one described cold rolling unit of claim 1-3, the shape adjusting device that it is characterized in that described multi-roll mill is in the top roll case or in the lower roll case, at least one place is provided with the hydraulic cylinder of direct acting type plate shape control device, and this hydraulic cylinder is applied directly to active force on the mandrel in the backing roll back lining bearing.
10. multi-roller multi-frame reversible cold-rolling milling method comprises the steps:
(1) blank is from the first coiling machine unwinding, takes the lead by raising or closed roll gap is wound into second coiling machine of outlet side, and forms suitable tension force;
(2) defeat down screwdown gear according to depressing of setting, starting multi-roller multi rolling mill, it is rolling that raising speed is carried out first passage;
(3) when coil of strip is about to roll, the milling train ramp to stop makes magnetic tape trailer off-position on the entrance side coiler mandrel;
(4) adjust second reduction in pass, roll gap, tension force, raising speed then, it is rolling that milling train carries out the commutation of second road;
(5) repeat said process to reaching finished product thickness.
11. multi-roller multi-frame reversible cold-rolling milling method comprises the steps:
(1) roll gap with first milling train opens slightly, blank takes the lead to stretch out from the first coiling machine uncoiling, during to the working roll of first milling train, starting multi-roller multi rolling mill, defeat down screwdown gear according to depressing of setting, make rolled piece pass through corresponding multi-roller multi rolling mill down successively, and be wound into second coiling machine of outlet side, form suitable tension force and continue the operation of rolling rolling;
(2) when coil of strip is about to roll, the milling train ramp to stop makes magnetic tape trailer off-position on the entrance side coiler mandrel;
(3) adjust the second rolling process drafts, roll gap, tension force, raising speed then, it is rolling that milling train carries out the commutation of second rolling process;
(4) repeat said process to reaching finished product thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510077281 CN1883833A (en) | 2005-06-21 | 2005-06-21 | Multi-roller multi-frame reversing cold mill and rolling method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510077281 CN1883833A (en) | 2005-06-21 | 2005-06-21 | Multi-roller multi-frame reversing cold mill and rolling method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1883833A true CN1883833A (en) | 2006-12-27 |
Family
ID=37582207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510077281 Pending CN1883833A (en) | 2005-06-21 | 2005-06-21 | Multi-roller multi-frame reversing cold mill and rolling method therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1883833A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389897A (en) * | 2011-10-08 | 2012-03-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Rolling method used for rolling strip steel of reversible mill |
| CN102527717A (en) * | 2012-01-06 | 2012-07-04 | 无锡华精新型材料有限公司 | Cold-rolling method for increasing cold-rolling yield of oriented silicon steel strip |
| CN103143587A (en) * | 2013-03-18 | 2013-06-12 | 济钢集团国际工程技术有限公司 | Device and method suitable for improving yield of welding leading tape of double-stander cold rolling mill |
| CN103394527A (en) * | 2013-08-02 | 2013-11-20 | 河北省首钢迁安钢铁有限责任公司 | Method for improving yield of rolled high-silicon non-oriented electrical steel |
| CN104148383A (en) * | 2014-06-28 | 2014-11-19 | 济钢集团有限公司 | Closed roller gap threading and rolling method for double-rack cold-rolling mill |
| CN104438318A (en) * | 2013-09-16 | 2015-03-25 | 钱钢 | Multi-roller exchangeable cold rolling mill |
| CN105880291A (en) * | 2016-06-12 | 2016-08-24 | 张家港浦项不锈钢有限公司 | Method for switching on upper working roller and lower working roller during stop of slab rough mill |
| CN108043881A (en) * | 2017-12-12 | 2018-05-18 | 中冶南方工程技术有限公司 | A kind of thickness of single-stand cold-rolling machine and the decoupling control method of tension and system |
| CN108500060A (en) * | 2018-03-27 | 2018-09-07 | 中冶陕压重工设备有限公司 | A kind of zirconium plate, the rolling mill practice arrangement with cold mill complex and milling method |
| CN110586658A (en) * | 2019-09-27 | 2019-12-20 | 北京科技大学设计研究院有限公司 | Control method for shortening rolling pass interval time of reversible roughing mill |
| CN111774422A (en) * | 2020-07-16 | 2020-10-16 | 北京首钢冷轧薄板有限公司 | Method for reducing stop loss of continuous rolling mill |
| CN111822521A (en) * | 2020-07-23 | 2020-10-27 | 北京博创朔方科技有限公司 | Continuously rolled cold rolled steel production equipment for steel plant |
| CN112317538A (en) * | 2020-09-21 | 2021-02-05 | 山西太钢不锈钢股份有限公司 | Stainless steel rolling control method of twenty-roller reversible cold rolling mill |
| CN112517663A (en) * | 2020-12-28 | 2021-03-19 | 江苏大力神科技股份有限公司 | Pressing device installed behind roller |
| CN112969540A (en) * | 2018-11-23 | 2021-06-15 | 考克利尔维修工程有限责任公司 | Flexible cold rolling mill and conversion method thereof |
| CN113477705A (en) * | 2021-07-08 | 2021-10-08 | 承德建龙特殊钢有限公司 | Rolling device for replacing blanks with different specifications and rolling method thereof |
| CN114260316A (en) * | 2020-09-16 | 2022-04-01 | 宝山钢铁股份有限公司 | Driven roller shape of second intermediate roller of sendzimir mill |
| CN114951293A (en) * | 2022-04-02 | 2022-08-30 | 中国重型机械研究院股份公司 | Accurate stop and automatic reversing control method for high-speed precise strip steel cold rolling mill |
| CN114951294A (en) * | 2022-04-02 | 2022-08-30 | 中国重型机械研究院股份公司 | Accurate stop and automatic reversing control system of high-speed accurate belted steel cold rolling mill |
-
2005
- 2005-06-21 CN CN 200510077281 patent/CN1883833A/en active Pending
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389897A (en) * | 2011-10-08 | 2012-03-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Rolling method used for rolling strip steel of reversible mill |
| CN102527717A (en) * | 2012-01-06 | 2012-07-04 | 无锡华精新型材料有限公司 | Cold-rolling method for increasing cold-rolling yield of oriented silicon steel strip |
| CN103143587A (en) * | 2013-03-18 | 2013-06-12 | 济钢集团国际工程技术有限公司 | Device and method suitable for improving yield of welding leading tape of double-stander cold rolling mill |
| CN103143587B (en) * | 2013-03-18 | 2015-09-16 | 济钢集团国际工程技术有限公司 | The welding band-leading being applicable to compact cold strip mill improves the device and method of lumber recovery |
| CN103394527A (en) * | 2013-08-02 | 2013-11-20 | 河北省首钢迁安钢铁有限责任公司 | Method for improving yield of rolled high-silicon non-oriented electrical steel |
| CN103394527B (en) * | 2013-08-02 | 2016-01-13 | 北京首钢股份有限公司 | A kind of method improving high silicon non-oriented electrical steel rolling lumber recovery |
| CN104438318A (en) * | 2013-09-16 | 2015-03-25 | 钱钢 | Multi-roller exchangeable cold rolling mill |
| CN104438318B (en) * | 2013-09-16 | 2016-04-27 | 钱钢 | The interchangeable cold-rolling mill of a kind of multiple roll |
| CN104148383A (en) * | 2014-06-28 | 2014-11-19 | 济钢集团有限公司 | Closed roller gap threading and rolling method for double-rack cold-rolling mill |
| CN104148383B (en) * | 2014-06-28 | 2016-01-13 | 济钢集团有限公司 | Compact cold strip mill closes roll gap threading milling method |
| CN105880291A (en) * | 2016-06-12 | 2016-08-24 | 张家港浦项不锈钢有限公司 | Method for switching on upper working roller and lower working roller during stop of slab rough mill |
| CN105880291B (en) * | 2016-06-12 | 2017-08-01 | 张家港浦项不锈钢有限公司 | The slab rough rolling machine method that upper and lower working roll is opened when shutting down |
| CN108043881B (en) * | 2017-12-12 | 2019-03-29 | 中冶南方工程技术有限公司 | A kind of thickness of single-stand cold-rolling machine and the decoupling control method and system of tension |
| CN108043881A (en) * | 2017-12-12 | 2018-05-18 | 中冶南方工程技术有限公司 | A kind of thickness of single-stand cold-rolling machine and the decoupling control method of tension and system |
| CN108500060A (en) * | 2018-03-27 | 2018-09-07 | 中冶陕压重工设备有限公司 | A kind of zirconium plate, the rolling mill practice arrangement with cold mill complex and milling method |
| CN108500060B (en) * | 2018-03-27 | 2024-04-09 | 中冶陕压重工设备有限公司 | Rolling process arrangement and rolling method of zirconium plate and strip cold rolling unit |
| CN112969540A (en) * | 2018-11-23 | 2021-06-15 | 考克利尔维修工程有限责任公司 | Flexible cold rolling mill and conversion method thereof |
| CN112969540B (en) * | 2018-11-23 | 2023-11-03 | 考克利尔维修工程有限责任公司 | Flexible cold rolling mill and conversion method thereof |
| CN110586658A (en) * | 2019-09-27 | 2019-12-20 | 北京科技大学设计研究院有限公司 | Control method for shortening rolling pass interval time of reversible roughing mill |
| CN110586658B (en) * | 2019-09-27 | 2020-09-11 | 北京科技大学设计研究院有限公司 | Control method for shortening rolling pass interval time of reversible roughing mill |
| CN111774422A (en) * | 2020-07-16 | 2020-10-16 | 北京首钢冷轧薄板有限公司 | Method for reducing stop loss of continuous rolling mill |
| CN111774422B (en) * | 2020-07-16 | 2022-05-03 | 北京首钢冷轧薄板有限公司 | Method for reducing stop loss of continuous rolling mill |
| CN111822521A (en) * | 2020-07-23 | 2020-10-27 | 北京博创朔方科技有限公司 | Continuously rolled cold rolled steel production equipment for steel plant |
| CN114260316A (en) * | 2020-09-16 | 2022-04-01 | 宝山钢铁股份有限公司 | Driven roller shape of second intermediate roller of sendzimir mill |
| CN114260316B (en) * | 2020-09-16 | 2024-04-05 | 宝山钢铁股份有限公司 | Driven roller of second intermediate roller of Sendzimir mill |
| CN112317538A (en) * | 2020-09-21 | 2021-02-05 | 山西太钢不锈钢股份有限公司 | Stainless steel rolling control method of twenty-roller reversible cold rolling mill |
| CN112517663A (en) * | 2020-12-28 | 2021-03-19 | 江苏大力神科技股份有限公司 | Pressing device installed behind roller |
| CN113477705A (en) * | 2021-07-08 | 2021-10-08 | 承德建龙特殊钢有限公司 | Rolling device for replacing blanks with different specifications and rolling method thereof |
| CN114951293A (en) * | 2022-04-02 | 2022-08-30 | 中国重型机械研究院股份公司 | Accurate stop and automatic reversing control method for high-speed precise strip steel cold rolling mill |
| CN114951294A (en) * | 2022-04-02 | 2022-08-30 | 中国重型机械研究院股份公司 | Accurate stop and automatic reversing control system of high-speed accurate belted steel cold rolling mill |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1883833A (en) | Multi-roller multi-frame reversing cold mill and rolling method therefor | |
| US7665339B2 (en) | Method for increasing the range of production of a metal product rolling installation and installation therefor | |
| CN1261243C (en) | Rolling method for plate mill and rolling equipment for plate | |
| CN101602067B (en) | On-line integrated control method of plate shape and plate crown of UCM continuous cold mill train with five machine frames | |
| CN100361759C (en) | Multi-roller steel plate-flattening machine | |
| CN101522326A (en) | Rolling mill and method for controlling a rolling mill | |
| CN1262363C (en) | Roll stand for producing plane roll strips having a desired strip profile superelevation | |
| CN109332389B (en) | Method for cross rolling of magnesium alloy | |
| LT5223B (en) | Method and instalation for the production of an aluminum sheet with a textured surface | |
| CN107252822A (en) | A kind of eighteen-high mill | |
| CN201399466Y (en) | Endless rolling cold continuous rolling device | |
| CN105964691A (en) | Novel ten-roller steel plate cold-rolling mill structure | |
| CN1871076A (en) | Rolling mill for hot-rolling metal, in particular, aluminium, and hot-rolling method | |
| CN1090064C (en) | Heavy unit weight hot rolling method for sheet bars, and steel milling equipment therefor | |
| WO1988000863A1 (en) | Multistage rolling mill | |
| CN207138503U (en) | A kind of eighteen-high mill | |
| AU757096B2 (en) | A rolling mill with roll deflection bi-dimensionally controlled | |
| CN1020072C (en) | Continuous rotting mill for cold-roeled threaded reinforcing bar | |
| CN2865897Y (en) | Steel plate multiroll leveling machine | |
| CN1974042A (en) | Steel rolling guide roll unit | |
| CN212238621U (en) | Coiler clamping and conveying device for full-headless hot-rolled strip steel production line | |
| CN1894053A (en) | Combined operating modes and frame types in tandem cold rolling mills | |
| CN201002100Y (en) | Supporting roller with shape-regulating mechanism | |
| CN219851437U (en) | Material guiding device with auxiliary press roller | |
| CN114535296B (en) | EDT surface rolling method for aluminum plate strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |