CN1234476C - Plate shape and thickness-controlling rolling method and corresponding gap-less roller mill - Google Patents
Plate shape and thickness-controlling rolling method and corresponding gap-less roller mill Download PDFInfo
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- CN1234476C CN1234476C CN 02100585 CN02100585A CN1234476C CN 1234476 C CN1234476 C CN 1234476C CN 02100585 CN02100585 CN 02100585 CN 02100585 A CN02100585 A CN 02100585A CN 1234476 C CN1234476 C CN 1234476C
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- 238000005096 rolling process Methods 0.000 title abstract description 18
- 238000000034 method Methods 0.000 title abstract description 15
- 238000003801 milling Methods 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 12
- 238000010276 construction Methods 0.000 description 6
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- 230000001105 regulatory effect Effects 0.000 description 4
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- 230000005484 gravity Effects 0.000 description 1
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Abstract
The present invention provides a plate shape and thickness controlled rolling method and a gapless rolling mill for implementing the method. In the method, the roller gap is changed and the thickness and the shape of a plate are adjusted by horizontally moving work rollers and enabling the work rollers to symmetrical cross each other. The rolling mill of the present invention is a work roller moving type rolling mill which is abbreviated as an MWR rolling mill and comprises a mill frame, a screwdown device, an upper supporting roller device, an upper work roller device, a lower work roller device and a lower supporting roller device, wherein the side surfaces of the ends of work roller bearing seats are provided with a crossly moving device which comprises lumbar blocks and moving cylinders; the lumbar blocks are respectively arranged on the side surfaces of an upper work roller bearing seat and a lower work roller bearing seat; the moving cylinders are perpendicular to the work rollers, and are horizontally arranged between the lumbar blocks on the two adjacent sides of the upper work roller bearing seat and the lower work roller bearing seat. In the present invention, the crossly moving device can substitute for an automatic thickness control (AGC) device which is used at the present time and has high cost, so that the rolling mill has the advantages of simple structure, low cost, reduced resistance against the shape and thickness control of the plate, and increased accuracy of controlling the shape and the thickness of the plate. Moreover, pressing cylinders arranged on the side surfaces of the upper supporting roller device and the lower supporting roller device or on the mill frame, and the moving cylinders arranged on the lumbar blocks can realize the gapless roll milling among the roller bearing seats and the mill frame.
Description
Technical field
The present invention relates to the milling method of a kind of control panel shape of metallurgical machinery sector strips or plates and thickness of slab and be suitable for the no gap milling train of this method, promptly mobile working roller (Move Work Roll) milling train is called for short the MWR milling train.
Background technology
At present, the controlled thickness of slab and the plate shape four-high mill of domestic and international strips or plates, be external proprietary technology and capture, as: CVC (the Continuous Variable Crown) milling train that German western mark company produces, the PC of MIT (Pair Crossed rolls) milling train etc.The method of CVC milling train control panel shape is for adopting the upper working rolls and lower working rolls of S shape, and the working roll that axially relatively moves is adjusting plate shape, but this milling train needs the S roll forming of special purpose grinder and software grinding working roll, special-purpose control software, and its cost height, difficulty of processing are big.The PC milling train of MIT is realized adjusting plate shape by the forked working roller, but its skewing mechanism complexity, machining hole is a lot of on the frame, and intensity reduces or size increases the weight increase.The control of these two kinds of milling train thickness of slab precision all adopts the high thickness of precision to control (AGC) device automatically, promptly depress control thickness by hydraulic pressure, pressing down hydraulic jack directly acts on the back-up chock, also to overcome very big roll-force simultaneously and carry out the thickness of slab adjusting, this just requires hydraulic system to have the higher pressure and the hydraulic cylinder of large-size, simultaneously, because of needing control system, thickness of slab required precision higher position has very high positioning accuracy, therefore, cause thickness of slab regulating system pressure big, invest shortcomings such as big, so the high milling method of a kind of thickness control accuracy, and invest little, the pressure of control panel shape and thickness of slab reduces, precision improves.Simultaneously control structure is simple, that rack construction, intensity, a kind of milling train that stiffness effect is little are become the present technique field is required.
In addition, existing milling train leaves certain clearance in order to change working roll and backing roll between working roll and back-up chock and the frame, therefore when rolling, easily produces vibration, influences the control accuracy of plate shape and thickness of slab simultaneously.
The content of invention
Primary and foremost purpose of the present invention provides the milling method of a kind of control panel shape and thickness of slab, simultaneously control panel shape, thickness of slab when strips or plates, and this method is simple, and controlled pressure is little, the control accuracy height.
Another object of the present invention provides a kind of no gap milling train that is suitable for said method, and this milling train be used for control panel shape and thickness of slab simple in structure, cost is low, controlled pressure is little; And when satisfying the control accuracy of thickness of slab, the device of its control thickness of slab, plate shape is little to rack construction, intensity, stiffness effect.
A further object of the present invention is to be to provide a kind of mobile working roller not have the gap milling train, when it is done to intersect or is offset at working roll, guarantee that working roll bearing block and back-up chock all do not have the gap and produce, to realize the purpose of the non-gap rolling between roll chock and frame.
For achieving the above object, the method of adjustment strip flatness and gauge of the present invention is by moving and forked working roller control thickness of slab and plate shape, moving and intersecting of described working roll is meant that upper and lower working roll and upper and lower backing roll center line intersection point are respectively by 1/2 place's symmetrical chiasma of rolled steel plate width, and two working rolls move to the same side horizontal cross at the intersection point place, and by the other end axis of the axis of the position at rolled steel plate both ends, top working roll one end and bottom working roll respectively with the axes intersect of backing roll.
The intersecting angle α of described upper and lower working roll is greater than 0 degree, smaller or equal to 1.5 degree; The side-play amount at the place, crosspoint of described upper and lower working roll is smaller or equal to 15mm greater than 0.
The technology used in the present invention solution is: a kind of mobile working roller does not have the gap milling train, comprising: frame, screwdown gear, top backing up roll device, top working roll device, bottom working roll device, lower support roller arrangement; The end sides that is positioned at central rack, working roll is equipped with the intersection mobile device, and this intersection mobile device comprises: waist piece and movable cylinder, described waist piece are installed on the two sides of bearing block of the upper and lower working roll of central rack respectively; The movable cylinder that is used for moving horizontally working roll perpendicular to working roll, be the adjacent both sides of bearing block of being located at waist piece and upper and lower working roll horizontally disposedly.
Best, slide plate is installed in the end of described movable cylinder, and described waist piece be provided with for described slide plate slides with the suitable chute of slide plate profile.
Preferably also be provided with the sphere slide plate in the end of working roll, the side of working roll bearing block, described sphere slide plate is a spherical side and contacts with the outer end of described slide plate.So that not producing with the end face of slide plate when intersecting, working roll do not interfere.
The side of upper and lower back-up chock or frame is respectively equipped with hold-down cylinder.So that working roll when skew, the gap between backing roll and the frame is eliminated up and down.
The movable cylinder that being used to of the described side that is located at each working roll bearing block moves horizontally working roll is 1 to 4.
The described hold-down cylinder that is located at the side of each back-up chock is 1 to 4.
Referring to Fig. 5, when last, bottom working roll moves and during symmetrical chiasma in the same way, and intersecting of an end of working roll axis with supporting roller bobbin thread end, like this, on, bottom working roll and last, the inter_curve of lower support roller is respectively curve 1 and curve 2 (referring to Fig. 5 b), on the XY coordinate plane, be projected as conic section, the coaxial end of this inter_curve and backing roll is the O point of conic section, because it is last, bottom working roll is a symmetrical chiasma, therefore curve 1 and 2 also is symmetrical, by curve 1 and the curve 2 synthetic change curves to roll gap is curve 3, curve 3 is that big centre, two ends is little, and the gap width at its two ends equates, and this curve is two ends, the left and right sides with respect to the point-symmetric negative convexity shape in centre (seeing Fig. 5 b).Yet roll is subjected to roll-force (to be assumed to be uniform load, top roll roller up and down is downward) time, its deformation curve is a quintic curve, change curve to roll gap is a curve 4, it is small in ends broad in the middle, being positive convexity (seeing Fig. 5 c), is that curve 4 also is the positive convexity shape with respect to central point uniformly if the load when rolling distributes.The monosymmetric curve 3 that is negative convexity shape has best effect for offsetting the monosymmetric curve 4 that is positive convexity shape, superimposed curves 3 and curve 4 comprehensively draw roller gap curve 5 (seeing Fig. 5 d), this shows that plate shape control effect is very obvious, convexity reduces greatly.Moving and intersecting of working roll of the present invention is symmetrical, and upper and lower working roll and upper and lower backing roll contact wear also are symmetrical, helps control panel shape and thickness of slab like this and realizes free rolling.
Owing to adopt technique scheme, by being located at the movable cylinder in the waist piece, roller realizes that the roll gap of upper working rolls and lower working rolls changes but level pushes the work forward, working roll and the axis relativity shift of backing roll, upper and lower working roll are intersected, thereby adjust strip material thickness and plate shape, automatically control (AGC) device thereby can replace complicated thickness, upper and lower backing roll device side is provided with hold-down cylinder simultaneously, and the movable cylinder on hold-down cylinder and the waist piece can be realized the non-gap rolling between roll chock and frame; The quantity of movable cylinder and hold-down cylinder can be made as 1-4 according to the size of working roll bearing block and back-up chock, and its quantity is many more, and the stability that promotes and compress is good more; Also be provided with vertically arranged balance roller cylinder in the waist piece, be used for the gravity of balance top backing up roll, balance roller cylinder also can be regulated the positive convexity of the caused plate shape of roll-force, therefore, and can the binding equilibrium roller cylinder and the mobile device control panel shape of intersecting.Advantages such as referring to table 1, table 1 is external CVC milling train and PC milling train and technology of the present invention contrast, and as can be seen from the table, that the present invention has is simple in structure, little to rack construction, intensity, stiffness effect, and the scope of adjustable plate slab-shaped is big, ability is strong.
Description of drawings
Fig. 1 is the end face structure schematic diagram that mobile working roller of the present invention does not have the gap milling train;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 A, 3B are respectively the location diagrams after working roll of the present invention and backing roll are in same vertical plane and working roll skew;
Fig. 4 A, 4B, 4C, 4D are respectively that working roll of the present invention moves intersection position of center line figure, upper working rolls and lower working rolls intersection position of center line figure, upper working rolls and lower working rolls Mobility Center line position figure and working roll and backing roll contact position figure;
Fig. 5 is a roll deformation curve synoptic diagram of the present invention.
The specific embodiment
Describe technical scheme of the present invention in detail below in conjunction with the drawings and specific embodiments:
The method of adjustment strip flatness and gauge of the present invention is by moving and forked working roller control thickness of slab and plate shape, moving and intersecting of described working roll is meant that upper and lower working roll and upper and lower backing roll center line intersection point are respectively by 1/2 place's symmetrical chiasma of rolled steel plate width, and two working rolls move to the same side horizontal cross at the intersection point place, and by the other end axis of the axis of the position at the both ends of rolled steel plate, top working roll one end and bottom working roll respectively with the axes intersect of backing roll.The intersecting angle α of described upper and lower working roll is greater than 0 degree, smaller or equal to 1.5 degree; The side-play amount at the place, crosspoint of described upper and lower working roll is smaller or equal to 15mm greater than 0.
Referring to Fig. 3 A, 3B and Fig. 4 A-4D, Fig. 3 A, 3B are respectively the axis projection figure of the position relation of working roll and backing roll center line; Fig. 4 A-4D is the horizontal projection of the position relation of working roll and backing roll center line.Under the motionless condition of backing roll, the side-play amount that changes working roll will change the gap values between rollers between the working roll, plays the effect that changes drafts, changes the side-play amount of working roll by mobile working roller flatly, promptly can reach the purpose of regulating thickness of slab.When working roll center line during with respect to the backing roll disalignment, gap between working roll is changed, reach the purpose of regulating thickness of slab, when working roll is symmetrical chiasma, therefore both can make the slit of the slit at working roll two ends, can regulate because pressure causes the problem of the strip crown that working roll generation flexible deformation brings greater than the centre position.Can draw following formula by geometrical analysis:
When upper and lower working roll side-play amount was respectively X1, X2, convexity h1, the h2 of its upper and lower working roll were respectively:
h1＝(D1+D2)/2-SQRT(((D1+D2)/2)((D1+D2)/2)-X1X1)
h2＝(D1+D2)/2-SQRT(((D1+D2)/2)((D1+D2)/2)-X2X2)
The convexity h12 of upper working rolls and lower working rolls is:
h12＝SQRT((D+h1+h2)(D2+h1+h2)+(X1-X2)(X1-X2))-D1
Because working roll moves, the horizontal force of upper and lower roll is when rolling:
F1＝f1＝P(TAN(ASIN(X1/((D1+D2)/2))))
Wherein: D1: backing roll diameter D2: work roll diameter
X1: top working roll side-play amount h1: go up roll crown
X2: bottom working roll side-play amount h2: following roll crown
H12: upper working rolls and lower working rolls convexity P: maximum rolling force
Analyze the geometrical curve more complicated with mathematical formulae, but use numerical computation method, the angle of the crossing of given working roll and body of roll position, can be in order to go out each roll gap of mainly putting of the body of roll with the calculating computer, referring to table 2-table 4, table 2-table 4 has provided when adopting the different angles of the crossing and side-play amount, when roll-force is 17529KN each gap values between rollers of mainly putting of the body of roll respectively; Parameter as can be known in the summary analysis, upper and lower working roll and upper and lower backing roll center line intersection point are respectively at the B/2 place of both sides, about symmetrical chiasma angle 0.5 degree and at middle part intersection points B/2 places, symmetry moves horizontally about 5mm in the same way, can satisfy milling train plate shape and the requirement of thickness of slab control accuracy.From table 2-table 4, it can also be seen that, when intersecting angle adopted 1.5 to spend, the negative convex value of its control panel shape can reach 2.3461mm, and promptly the two ends of plate are than the thick 2.3461mm in centre position, just explanation adopts the method for symmetrical chiasma working roll control panel shape easy, simple in structure, control ability is strong for this.Though the intersection of working roll and the meeting of moving produce certain axial force, but because intersecting angle value and movement value are all very little, the axial force of working roll can use mounting spherical pressing plate between frame, working roll and back-up chock (at the upper and lower side of Fig. 2) to wait the structure of other similar milling trains to overcome.
Referring to Fig. 1-Fig. 2, showed among the figure that a kind of mobile working roller does not have the gap milling train, it comprises: frame 12, screwdown gear 1, top backing up roll device 30, top working roll device 40, bottom working roll device 50, lower support roller arrangement 60; Top backing up roll device 30 comprises top backing up roll 3 and top backing up roll bearing block 4, top working roll device 40 comprises top working roll 5 and top working roll bearing block 6, bottom working roll device 50 comprises bottom working roll 8 and bottom working roll bearing 9, and lower support roller arrangement 60 comprises lower support roller 10 and lower support roll bearing seat 11; The end sides that is positioned at frame 12 middle parts and upper and lower working roll 5,8 is equipped with intersection mobile device 20, this intersection mobile device 20 also comprises: waist piece 7 and 4 movable cylinders 13, described waist piece 7 are installed on the two sides of bearing block 6,9 of upper and lower working roll at the middle part of frame 12 respectively; Movable cylinder 13 perpendicular to working roll 5,8, be and be located at bearing block waist piece 7 and upper and lower working roll 6,9 adjacent both sides horizontally disposedly, this movable cylinder 13 is used to move horizontally working roll, realizes the skew and the intersection of working roll.In the end of described movable cylinder 13 slide plate 15 is installed, and described waist piece 7 is provided with the chute 19 that slides for described slide plate 15, the effect of slide block 15 is to be convenient to repair and replacement after the wearing and tearing.Also be provided with sphere slide plate 16 in the end of working roll, the side of working roll bearing block 6,9, described sphere slide plate 16 is a spherical side and contacts with the outer end of described slide plate 15.The sphere slide plate 16 that movable cylinder 13 promotes on the upper working rolls and lower working rolls bearing block 6,9 moves, and realizes moving and intersection of working roll.The sphere of sphere slide plate pushes the work forward roller when working roll is intersected at movable cylinder, avoids the side of working roll and the end face interference of slide plate.Top backing up roll 3 and lower support roller 10 support top working roll 5 and bottom working roll 8 respectively, and the bearing in lower support roll bearing seat 11 and the top backing up roll bearing block 4 bears roll-force.Screwdown gear 1 is positioned at the top of top backing up roll bearing block 4.
Referring to Fig. 1 and Fig. 2, be respectively equipped with 1 hold-down cylinder 17 on the side of upper and lower back-up chock 4,11 or the frame.The effect of hold-down cylinder 17 and movable cylinder 13 is the non-gap rollings that are to make between roll and frame.On described waist piece 7, be provided with balance roller cylinder 14 perpendicular to horizontal plane.Balance roller cylinder 14 realizes that the gravitational equilibrium and the upper working rolls and lower working rolls of top working roll 5 and top backing up roll 3 compress the roller effect.
If desired, this milling train also can further be provided with thickness control device 2, is used to adjust thickness of slab, and described thickness control device 2 is positioned at the top of top backing up roll bearing block 4, and can adopt general control device in the prior art.
Described mobile working roller mill also is provided with and is used to drive upper and lower working roll and divides other motor and connect axle; And oil pumping system; Automatic electrical control system etc. is arranged, all similar to prior art.
External CVC milling train of table 1 and PC milling train and the contrast of mobile working roller mill technology
| Sequence number | Project | The CVC milling train | The PC milling train | Mobile working roller (MWR) | Remarks | ||
| 1 | Plate shape control principle | Working roll S roll forming moves axially | Working roll intersects in pairs with backing roll | The mobile working roller also intersects | |||
| 2 | Thickness control accuracy mm | The AGC device, pressure is big, precision height, big (about 1,000 ten thousand yuan) ± 0.03 of investment | The mobile working roller, mobile accuracy requires low, roll gap precision height, pressure is little,, invest little.± 0.03 | ||||
| 3 | Plat control system | Working roll S roll forming axial moving device; S roll forming Grinding Software and control software; Simple in structure, little to rack construction, intensity, stiffness effect; Add roll-bending device | Skewing mechanism mechanical transmission structure complexity; Big to rack construction, intensity, stiffness effect.Add roll-bending device | The mobile working roller arrangement can utilize roll-bending device, simple in structure, little to rack construction, intensity, stiffness effect; | |||
| 4 | Range of application | Various strip- | |||||
| 5 | Plate shape control ability mm | 0～0.5 (adding roll-bending device 0.6) | 0～1.0 | 0～1.0 | |||
| 6 | Axial force kN | About 1000 | (0.05～0.1) P | About (0.05～0.1) | |||
| 7 | Roll intersection or degree of excursion or mm | Move axially ± 100 | Intersect 0～1 | Intersection 0～0.5～1 moves horizontally about 0～5～15 | |||
| 8 | Applicable cases | About more than 70 of the whole world | About more than 70 of the whole world | Do not have | |||
Table 2 upper working rolls and lower working rolls is 1.5 convexity and varied in thickness parameters of spending at symmetrical chiasma angle, two sides B/2 place respectively with backing roll center line intersection point up and down
| Sequence number | Title | Code name | Unit | Calculated | Remarks | ||||||
| 1 | The backing roll | D1 | mm | 1300 | |||||||
| 2 | Work roll diameter | D2 | mm | 610 | |||||||
| 3 | Barrel length | L1 | mm | 1450 | |||||||
| 4 | The roller bearing distance between seats from | | mm | 2500 | |||||||
| 5 | Steel plate | B | mm | 1300 | |||||||
| 6 | The upper working rolls and lower working rolls intersecting angle | α | Degree | 0 | (the top roll intersection point is at left B/2 place) 1.5 (the lower roll intersection point is at right B/2 place) | Intersecting angle is too big | |||||
| 7 | The top working roll side-play amount | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | ||||
| 8 | X1 | mm | 0 | 0 | 8.5104 | 17.0209 | 25.5313 | 34.0417 | |||
| 9 | Last roll crown | h1 | mm | 0 | 0 | 0.1745 | 0.6982 | 1.5721 | 2.7977 | ||
| 10 | The bottom working roll side-play amount | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | ||||
| 11 | X2 | mm | 0 | 34.0417 | 25.5313 | 17.0209 | 8.5104 | 0 | |||
| 12 | Following roll crown | h2 | mm | 0 | 2.7977 | 1.5721 | 0.6982 | 0.1745 | 0 | ||
| 13 | The upper working rolls and lower working rolls convexity | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | ||||
| 14 | h12 | mm | 3.7425 | 1.9833 | 1.3964 | 1.9833 | 3.7425 | The roll gap variable quantity | |||
| 15 | h | mm | 0 | 2.3461 | 0.5869 | 0 | 0.5869 | 2.3461 | Relative convexity | ||
| 16 | Maximum rolling force | P | kN | 30000 (17529kN, middle part convexitys 0.1536) | |||||||
| 17 | The upper and lower roll horizontal force | F1 | kN | 0 | 157 | 314 | 471 | 628 | 786 | ||
| 18 | The working roll bearing block side-play amount | X3 | mm | 0 | A left side: last 15.7, following 49.8 | Right: last 49.8,15.7 | |||||
| 19 | Intersection roller axial force | F3 | kN | About 0.1*P | |||||||
Table 3 upper working rolls and lower working rolls is 0.5 convexity and the varied in thickness parameter of spending at symmetrical chiasma angle, two sides B/2 place respectively with backing roll center line intersection point up and down
| Sequence number | Title | Code name | Unit | Calculated | Remarks | |||||
| 1 | The backing roll | D1 | mm | 1300 | ||||||
| 2 | Work roll diameter | D2 | mm | 610 | ||||||
| 3 | Barrel length | L1 | mm | 1450 | ||||||
| 4 | The roller bearing distance between seats from | | mm | 2500 | ||||||
| 5 | Steel plate | B | mm | 1300 | ||||||
| 6 | The upper working rolls and lower working rolls intersecting angle | α | Degree | (the top roll intersection point is at left B/2 place) 0.5 (the lower roll intersection point is at right B/2 place) | ||||||
| 7 | The top roll side-play amount | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | |||
| 8 | X1 | mm | 0 | 2.8362 | 5.6725 | 8.5087 | 11.3449 | |||
| 9 | Last roll crown | h1 | mm | 0 | 0.0194 | 0.0774 | 0.1744 | 0.3101 | ||
| 10 | The lower roll side-play amount | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | |||
| 11 | X2 | mm | 11.3449 | 8.5087 | 5.6725 | 2.8362 | 0 | |||
| 12 | Following roll crown | h2 | mm | 0.3101 | 0.1744 | 0.0774 | 0.0194 | 0 | ||
| 13 | The up-down rollers convexity | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | |||
| 14 | h12 | mm | 0.3102 | 0.2211 | 0.1548 | 0.2211 | 0.3102 | The roll gap variable quantity | ||
| 15 | h | mm | 0.1554 | 0.0663 | 0 | 0.0663 | 0.1554 | Relative convexity | ||
| 16 | Maximum rolling force | P | kN | 30000 (17529kN, middle part convexitys 0.1536) | ||||||
| 17 | The upper and lower roll horizontal force | F1 | kN | 157 | 314 | 471 | 628 | 786 | ||
| 18 | The working roll bearing block side-play amount | X3 | mm | A left side: last 5.236, down 16.581 | Right: last 16.581, down 5.236 | |||||
| 19 | Intersection roller axial force | F3 | kN | About 0.05*P | ||||||
Table 4 upper working rolls and lower working rolls 0.5 is spent at symmetrical chiasma angle, two sides B/2 place respectively with backing roll center line intersection point up and down
With the convexity and the varied in thickness parameter that move horizontally 5mm at the B/2 place in the same way
| Sequence number | Title | Code name | Calculated | Remarks | |||||||||
| 1 | The backing roll diameter | D1 | | 1300 | |||||||||
| 2 | Work roll diameter | D2 | mm | 610 | |||||||||
| 3 | Barrel length | L1 | mm | 1450 | |||||||||
| 4 | The roller bearing distance between seats from | | mm | 2500 | |||||||||
| 5 | Steel plate | B | mm | 1300 | |||||||||
| 6 | The upper working rolls and lower working rolls intersecting angle | α | Degree | 0 | (the top roll intersection point is at left B/2 place) 0.5 (the lower roll intersection point is at right B/2 place) | ||||||||
| 7 | The top roll side-play amount | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | ||||||
| 8 | | mm | 5 | 5 | 7.8362 | 10.6725 | 13.5087 | 16.3449 | |||||
| 9 | Last roll crown | h1 | mm | 0.0131 | 0.0131 | 0.1479 | 0.2744 | 0.4397 | 0.6438 | ||||
| 10 | The lower roll side-play amount | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | ||||||
| 11 | | mm | 5 | 16.3449 | 13.5087 | 10.6725 | 7.8362 | 5 | |||||
| 12 | Following roll crown | h2 | mm | 0.0131 | 0.6438 | 0.4397 | 0.2744 | 0.1479 | 0.0131 | ||||
| 13 | The up-down rollers convexity | The position | Left side B/2 | Left side B/4 | The middle part | Right B/4 | Right B/2 | ||||||
| 14 | h12 | mm | 0.0262 | 0.7623 | 0.6140 | 0.5488 | 0.6140 | 0.7623 | The roll gap variable quantity | ||||
| 15 | h | mm | 0.2135 | 0.0652 | 0 | 0.0652 | 0.2135 | Relative convexity | |||||
| 16 | Maximum rolling force | P | kN | 30000 (17529kN, middle part convexitys 0.1536) | |||||||||
| 17 | The upper and lower roll horizontal force | F1 | kN | 157 | 314 | 471 | 628 | 786 | |||||
| 18 | The working roll bearing block side-play amount | X3 | mm | A left side: last 10.236, down 21.581 | Right: last 21.581, down 11.236 | ||||||||
| 19 | Intersection roller axial force | F3 | kN | About 0.05*P | |||||||||
Claims (10)
1. the milling method of control panel shape and thickness of slab, be by moving and forked working roller control thickness of slab and plate shape, it is characterized in that moving and intersect and being meant that upper and lower working roll and upper and lower backing roll center line intersection point are respectively by middle part 1/2 place's symmetrical chiasma of rolled steel plate width of described working roll, and two working rolls move to the same side horizontal cross at the intersection point place, and by the other end axis of the axis of the position at the both ends of rolled steel plate, top working roll one end and bottom working roll respectively with the axes intersect of backing roll.
2. the milling method of control panel shape according to claim 1 and thickness of slab is characterized in that: the intersecting angle α of described upper and lower working roll is for spending, spend smaller or equal to 1.5 greater than 0; Described upper and lower working roll is smaller or equal to 15mm greater than 0 in the side-play amount at place, crosspoint.
3. a no gap milling train that is suitable for the milling method of described control panel shape of claim 1 and thickness of slab comprises: frame, screwdown gear, top backing up roll device, top working roll device, bottom working roll device, lower support roller arrangement; It is characterized in that: the end sides that is positioned at central rack, working roll bearing block is separately installed with the intersection mobile device, this intersection mobile device comprises: waist piece and movable cylinder, described waist piece are installed on the two sides of upper and lower working roll bearing block at the middle part of frame respectively; The movable cylinder that is used for moving horizontally working roll perpendicular to working roll, be and be located at the waist piece horizontally disposedly, be positioned at the both sides of upper and lower working roll bearing block.
4. no gap according to claim 3 milling train, it is characterized in that: the pistons end at described movable cylinder is equipped with slide plate, and described waist piece be provided with for described slide plate slides guiding with the suitable chute of slide plate profile.
5. no gap according to claim 4 milling train is characterized in that: the side at working roll bearing block also is provided with the sphere slide plate, and described sphere slide plate is a spherical side and contacts with the outer end of described slide plate.
6. according to claim 3 or 4 or 5 each described no gap milling train wherein, it is characterized in that: the side of upper and lower back-up chock is respectively equipped with the hold-down cylinder that is used for laterally compressing back-up chock, and described hold-down cylinder is fixed on back-up chock or the frame.
7. according to claim 3 or 4 or 5 each described no gap milling train wherein, it is characterized in that: on described waist piece, be provided with balance roller cylinder perpendicular to horizontal plane.
8. no gap according to claim 6 milling train is characterized in that: be provided with balance roller cylinder perpendicular to horizontal plane on described waist piece.
9. according to claim 3 or 4 or 5 each described no gap milling train wherein, it is characterized in that: the movable cylinder that being used to of the described side that is located at each working roll bearing block moves horizontally working roll is 1 to 4.
10. no gap according to claim 6 milling train is characterized in that: the described hold-down cylinder that is located at the side of each back-up chock is 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02100585 CN1234476C (en) | 2002-02-06 | 2002-02-06 | Plate shape and thickness-controlling rolling method and corresponding gap-less roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02100585 CN1234476C (en) | 2002-02-06 | 2002-02-06 | Plate shape and thickness-controlling rolling method and corresponding gap-less roller mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1436613A CN1436613A (en) | 2003-08-20 |
| CN1234476C true CN1234476C (en) | 2006-01-04 |
Family
ID=27627165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02100585 Expired - Lifetime CN1234476C (en) | 2002-02-06 | 2002-02-06 | Plate shape and thickness-controlling rolling method and corresponding gap-less roller mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1234476C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101683659B (en) * | 2008-09-28 | 2012-05-30 | 宝山钢铁股份有限公司 | Integrated control method of cold-rolling strip steel flatness and lateral thickness difference |
| CN101745541B (en) * | 2008-12-02 | 2012-02-01 | 苏州有色金属研究院有限公司 | Closed loop speed compensation method for thickness control system of aluminum cold rolling mill |
| CN101992220B (en) * | 2009-08-20 | 2012-09-19 | 宝山钢铁股份有限公司 | Method for controlling rigidity of mill housing |
| JP5631481B2 (en) * | 2011-03-18 | 2014-11-26 | 株式会社日立製作所 | Rolling control device, rolling control method, and rolling control program |
| CN104550327B (en) * | 2014-12-19 | 2017-01-04 | 秦皇岛首秦金属材料有限公司 | A kind of hot plate-straightening machine roll gap establishing method based on plastic deformation rate |
| KR101726088B1 (en) * | 2015-12-22 | 2017-04-12 | 주식회사 포스코 | Strip shape controller and method of the same |
-
2002
- 2002-02-06 CN CN 02100585 patent/CN1234476C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1436613A (en) | 2003-08-20 |
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