CN201565467U - Rolling mill working roll horizontal offset regulating and positioning device - Google Patents
Rolling mill working roll horizontal offset regulating and positioning device Download PDFInfo
- Publication number
- CN201565467U CN201565467U CN 200920293174 CN200920293174U CN201565467U CN 201565467 U CN201565467 U CN 201565467U CN 200920293174 CN200920293174 CN 200920293174 CN 200920293174 U CN200920293174 U CN 200920293174U CN 201565467 U CN201565467 U CN 201565467U
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- working roll
- rolling mill
- push rod
- roll
- horizontal offset
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Abstract
The utility model discloses a rolling mill working roll horizontal offset regulating and positioning device, which comprises a position control mechanism and a compaction balancing device, wherein the position control mechanism is installed on an upright post at the inlet side of a rolling mill stand (5) and arranged oppositely to bearing seats (4 and 1) at both ends of an upper working roll and a lower working roll of a rolling mill, and the compaction balancing device is installed on the upright post of the stand at the outlet side of the rolling mill and is opposite to the position control mechanism. The position control mechanism comprises an upper push rod (6) and a lower push rod (7), the upper push rod and the lower push rod penetrate through the upright post, one end of the upper push rod and one end of the lower rod are abutted against one side of the bearing seats of the upper working roll and the lower working roll, and the other ends thereof are connected with a push rod driving mechanism; and the compaction balancing device comprises an upper balancing hydraulic cylinder (3) and a lower balancing hydraulic cylinder (2). The utility model is applied to a four-roll or six-roll cold continuous rolling mill or a reversible cold rolling mill the working roll of which is not provided with a lateral support, the working roll can be correspondingly horizontally moved according to rolling parameters, and the horizontal offset of the working roll is regulated and positioned, so that the horizontal force of the working roll is reduced to obtain a working roll smaller than conventional design, and thin gauge strip steel is rolled.
Description
Technical field
The utility model relates to a kind of operation roll of mill and regulates positioner, particularly a kind of four rollers, six-roll cold mill device for adjusting and positioning horizontal offset for working rollers.
Background technology
Rolling mill for cold rolled steel strip commonly used has versions such as four rollers, six rollers, 12 rollers, 18 rollers and 20 rollers.The minimum thickness of rolled band steel is relevant with work roll diameter, and when roll material was steel, its empirical equation was:
h
min≈(1/1500～1/2000)D
w；
Wherein: h
MinIt is band steel minimum thickness; D
wIt is work roll diameter.
For the band steel of rolling thin specification, need to use the working roll of minor diameter.For four rollers, six-roll cold mill, band steel and backing roll or intermediate calender rolls will apply horizontal force to the working roll body of roll in the operation of rolling, and are delivered on the upright column of rolling mill by the upper working rolls and lower working rolls bearing block, and the working roll body of roll produces bending stress and flexural deformation simultaneously.If the excessive working roll of bending stress can rupture, if flexural deformation is crossed conference and influenced belt plate shape; That is: work roll diameter reduces to be subjected to body of roll bending stress and diastrophic restriction.The method that solves has at present: the first is born the horizontal force of working roll with two intermediate calender rolls, for example multi-roll mill such as 20 rollers, 12 rollers all is the horizontal force and the vertical force of bearing working roll by two larger-diameter intermediate calender rolls simultaneously, the multi-roll mill work roll diameter is more much smaller than the work roll diameter of conventional four rollers or six-roll cold mill, and working roll does not have bearing block.It two is on the basis of conventional four rollers or six-high cluster mill, the support roller of before and after working roll, bearing the working roll horizontal force along the rolling direction increase, ten mkw mills for example, ten mkw mills are under same case, and its work roll diameter is also much smaller than the work roll diameter of four rollers or six-roll cold mill.
At present, four rollers, six-roll cold mill are in the extensive use of band steel production field, but because working roll does not have the lateral support roller, that is: there is not additional roller system to bear the horizontal force of working roll, so its working roll size is bigger, reduce the restriction that work roll diameter is subjected to the working roll horizontal force, can not satisfy the rolling requirement of thin specification band steel.
The utility model content
The purpose of this utility model provides a kind of device for adjusting and positioning horizontal offset for working rollers of rolling mill of realizing rolling thin specification band steel.
The utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill, wherein: comprise being installed in position control mechanism on the rolling-mill housing entrance side column, that be oppositely arranged with the upper and lower working roll two end axles bearing of milling train, with be installed in milling train outlet side framework pillar on, relative with the position control mechanism balanced controls that compress, described position control mechanism comprises upper push-rod and lower push-rod, upper and lower push rod passes column, one end is resisted against a side of upper and lower working roll bearing block, and its other end is connected with the worm spiral propeller of push rod transmission mechanism; The described balanced controls that compress comprise that balance hydraulic cylinder reaches balance hydraulic cylinder down, and the piston rod end of balance hydraulic cylinder is pressed on the side of upper and lower working roll bearing block.
The utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill, wherein: set up a cover at the entrance side of the upper and lower working roll two end axles bearing of milling train and compress balanced controls, set up the position control mechanism that balanced controls are oppositely arranged that compresses of a cover and entrance side at the outlet side of the upper and lower working roll two end axles bearing of milling train.
The utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill, wherein: described push rod transmission mechanism comprises the engine with sensor, the output shaft of this engine is connected with the decelerator with brake, the output shaft of described decelerator is connected by the bevel gear decelerator of shaft coupling with the decelerator both sides that are placed in, and the bevel gear decelerator is connected with the worm spiral propeller that is positioned at the working roll two ends respectively.
The utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill, wherein: one in two output shafts of described decelerator is provided with differential attachment, and this differential attachment is connected with the engine with sensor by brake.
The utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill, wherein: described worm spiral propeller comprises propeller and following propeller, and both connect by shaft coupling, drive upper and lower push rod respectively.
The utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill, wherein: described engine is motor or hydraulic motor, and its afterbody is provided with encoder.
Device for adjusting and positioning horizontal offset for working rollers of rolling mill described in the utility model can be under identical rolling parameter duty, regulate four rollers, six-roll cold mill horizontal offset for working rollers, reduces the working roll horizontal force.It is applied on four rollers, six-roll cold mill of existing same size, and its work roll diameter is diminished, and its concrete advantage and beneficial effect are as follows:
1. employing said structure, owing to be provided with upper push-rod, lower push-rod and last balance hydraulic cylinder, balance hydraulic cylinder down respectively in the two sides of the bearing block of the upper and lower working roll transmission side of milling train and fore side, upper push-rod, lower push-rod transmission mechanism can make the offset of the relative intermediate calender rolls center line of working roll of the relative backing roll of working roll of 4-roller cold rolling mill or six-roll cold mill change, and make the working roll horizontal force be reduced to the numerical value of setting.That is: according to rolling parameters such as the draught pressure of each rolling pass, roll torque, front and back tension force, drafts, the kinds of drive, calculate the optimized migration amount Δ of relative backing roll of each operation roll of mill or intermediate calender rolls center line
BestWorking roll is moved horizontally to optimized migration amount place, make the working roll horizontal force be reduced to minimum, working roller bending stress and flexural deformation are reduced, thereby when the working roll that uses than minor diameter, can guarantee bending of work roll stress and flexural deformation in allowed band, realize the purpose of rolling thinner specification band steel.
Balance hydraulic cylinder is pushed down working roll bearing block from the opposite of push rod, keeps certain equalizing pressure, and when push rod stretched out forward, the piston rod of balance hydraulic cylinder pushed back; When push rod is return backward, the piston rod of balance hydraulic cylinder stretches out, that is: allow push rod abut against working roll bearing block all the time, making working roll bearing block be balanced hydraulic cylinder compresses, therefore, upper and lower working roll can not produce the displacement of horizontal direction in the operation of rolling, and the elimination bearing seat of operation roll of mill is adjacent the gap between the rolling-mill housing window, thereby can keep working roll to have advantages of higher stability.
In sum, four rollers, six roller cold continuous rolling or reversing cold mills with device for adjusting and positioning horizontal offset for working rollers of rolling mill of the present utility model, the cooperatively interacting of localization handspike by being arranged on upper and lower working roll two end axles bearing place and balance hydraulic cylinder, acting in conjunction, make working roll can after horizontal displacement, realize the location, the steady operation roller reduces the working roll level load; And when using the little working roll of diameter, still can guarantee bending of work roll stress and flexural deformation in allowed band, thereby reach the purpose of rolling thin specification band steel.
2. owing between the decelerator of push rod transmission mechanism and a bevel gear decelerator, be provided with differential attachment, the push rod of move operation side or transmission side separately, the adjusting of realization working roll and backing roll or working roll and intermediate calender rolls horizontal direction parallel degree.
Description of drawings
Be described further below in conjunction with the specific embodiment of accompanying drawing the utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill.
Fig. 1 is the first embodiment schematic diagram that the utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill is used for four-high mill;
Fig. 2 is Fig. 1 left view;
Fig. 3 is the second embodiment schematic diagram that the utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill is used for four-high mill;
Fig. 4 is the first embodiment schematic diagram that the utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill is used for six-high cluster mill;
Fig. 5 is the second embodiment schematic diagram that the utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill is used for six-high cluster mill.
Wherein: 1 bottom working roll bearing block, 2 times balance hydraulic cylinders, balance hydraulic cylinder on 3,4 top working roll bearing blocks, 5 rolling-mill housing, 6 upper push-rods, 7 lower push-rods, 8 upper and lower working roll worm spiral propellers, 9 bevel gear decelerators, 10 differential attachments, 11 sensors, 12 engines, 13 brakes, 14 sensors, 15 decelerators, 16 engines, 17 brakes, 18 working rolls, 19 backing rolls, 20 band steel, 21 intermediate calender rolls.
The specific embodiment
Referring to Fig. 1, Fig. 2 and Fig. 4, device for adjusting and positioning horizontal offset for working rollers of rolling mill described in the utility model.Wherein: comprise being installed in position control mechanism on the rolling-mill housing 5 entrance side columns, that be oppositely arranged with the upper and lower working roll two end axles bearing 4,1 of milling train, be installed in milling train outlet side framework pillar on, relative with the position control mechanism balanced controls that compress.Described position control mechanism comprises upper push-rod 6 and lower push-rod 7, and upper and lower push rod 6,7 passes column, and an end is resisted against a side of upper and lower working roll bearing block 4,1, and its other end is connected with the worm spiral propeller 8 of push rod transmission mechanism; The described balance controlling organization that compresses comprises that balance hydraulic cylinder 3 reaches balance hydraulic cylinder 2 down, and the piston rod end of balance hydraulic cylinder 3,2 is pressed on the side of upper and lower working roll bearing block 4,1.
Such scheme is applied to constant and its working roll of belt steel rolling direction not to be had on four rollers of lateral support, the six roller cold continuous rollings.That is: thereon, the entrance side of each bearing block of bottom working roll is provided with upper and lower push rod 6,7, its outlet side is provided with upper and lower balance hydraulic cylinder 3,2, the upper and lower balance hydraulic cylinder 3,2 at two ends is installed on the column of rolling-mill housing 5 band steel exports sides.Like this, upper and lower push rod 6,7 and the upper and lower balance hydraulic cylinder 3,2 that lays respectively at the bearing block both sides cooperatively interacts, acting in conjunction, the side-play amount of the working roll 18 relative backing rolls 19 of restriction four-high mill or the working roll 18 relative intermediate calender rolls 21 of six-high cluster mill guarantees result of use of the present utility model.
For reversible four rollers, six-roll cold mill, rolling direction and working roll horizontal force direction alternately change by rolling pass.For the horizontal force that makes working roll bearing block can both be born by push rod, respectively design a cover at milling train entrance side and outlet side and compress balanced controls and position control mechanism, the push rod of position control mechanism bears the horizontal force of the working roll of one of them direction respectively, and by its be oppositely arranged separately compress balance hydraulic cylinder in the balanced controls will be wherein the working roll bearing block of a side be pressed against on the push rod, eliminate the gap, realize accurately location.
The position control mechanism that is positioned at the milling train outlet side is identical with the structure of the position control mechanism of entrance side, described upper and lower push rod 6,7 passes the column of rolling-mill housing 5 too, one end is resisted against the side of upper and lower working roll bearing block 4,1 and is oppositely arranged with the upper and lower balance hydraulic cylinder 3,2 that is positioned at upper and lower working roll bearing block 4,1 opposite side, upper and lower push rod 6,7 other ends are connected with the worm spiral propeller 8 that is driven by the push rod transmission mechanism, as Fig. 3, shown in Figure 5.Like this, when band steel 20 when a certain direction is rolled, be positioned at the band steel upper and lower push rod 6,7 that enters the mouth and can be resisted against a side of upper and lower working roll bearing block 4,1, the upper and lower balance hydraulic cylinder 3,2 that is positioned at band steel exports side can be pressed on working roll bearing block on the upper and lower push rod 6,7; Equally, when band steel 20 when other direction is rolled, because the Way out of band steel changes, the upper and lower push rod 6,7 that then is positioned at this rolling pass band steel entrance side can be resisted against the opposite side of upper and lower working roll bearing block 4,1, and the upper and lower balance hydraulic cylinder 3,2 that is positioned at band steel exports side can be pressed on working roll bearing block on the upper and lower push rod 6,7.That is: upper and lower push rod 6,7 and the upper and lower balance hydraulic cylinder 3,2 that is positioned at the bearing block both sides cooperatively interact, acting in conjunction, can be along with the change of rolling direction, alternating action by upper and lower push rod 6,7 that lays respectively at the bearing block both sides and upper and lower balance hydraulic cylinder 3,2, the side-play amount of the working roll 18 relative backing rolls 19 of control four-high mill or the working roll 18 relative intermediate calender rolls 21 of six-high cluster mill, guarantee result of use of the present utility model, realize the purpose of this utility model.
Described worm spiral propeller 8 comprises propeller and following propeller, and both connect by shaft coupling, drives upper and lower push rod 6,7 simultaneously and rotates.
Described worm spiral propeller 8 can change the horizontal offset of upper and lower working roll by upper and lower push rod 6,7, control the horizontal force of its working roll, that is: according to rolling parameters such as the draught pressure of each rolling pass, roll torque, front and back tension force, drafts, the kinds of drive, theoretical side-play amount when calculating upper and lower working roll horizontal force and be zero, revise according to knowhow, determine the optimized migration amount Δ of upper and lower working roll
BestFinish adjusting by the worm spiral propeller by upper and lower push rod 6,7, and by upper and lower balance hydraulic cylinder 3,2 location, thereby the working roll horizontal force reduced.Therefore be applied to four rollers, six-roll cold mill, because horizontal force reduces, when using than the littler working roll of conventional design, bending of work roll stress and flexural deformation are still in the scope of variation allowable.
Described push rod transmission mechanism comprises the engine 16 with sensor 14, and the output of this engine is connected with the decelerator 15 with brake 17.The output shaft of described decelerator 15 is connected by the bevel gear decelerator 9 of shaft coupling with decelerator 15 both sides that are placed in, and bevel gear decelerator 9 is connected with the worm spiral propeller 8 that is positioned at the working roll two ends respectively.Two bevel gear decelerators 9 drive the worm screw rotation of the worm spiral propeller 8 of both sides respectively, worm screw drives worm gear and rotates, make upper and lower push rod 6,7 stretch out forward or return backward along rolling direction, promoting upper and lower working roll moves horizontally, and under the effect of upper and lower balance hydraulic cylinder 3,2, upper and lower working roll is pressed against respectively on the upper and lower push rod 6,7, eliminates the gap, realize accurately location.
In order to make device for adjusting and positioning horizontal offset for working rollers of rolling mill applying flexible of the present utility model, one in two output shafts of device decelerator 14 described in the utility model is provided with differential attachment 10, and this differential attachment 10 is connected with the engine 12 that is provided with sensor 11 by brake 13.Like this, the upper working rolls and lower working rolls bearing block that can make working roll operating side or driving end separately moves simultaneously, so as to regulate working roll with respect to backing roll or working roll with respect to the intermediate calender rolls depth of parallelism in the horizontal direction.
According to actual conditions, push rod transmission mechanism and differential attachment can be directly installed on the crossbeam of rolling-mill housing, also other corresponding position can be installed.Wherein the engine 12 of the engine 16 of push rod transmission mechanism and differential attachment can be motor or hydraulic motor.
In order to improve the control level of the utility model device for adjusting and positioning horizontal offset for working rollers of rolling mill, be respectively arranged with encoder at the afterbody of the engine 12 of the engine 16 of push rod transmission mechanism and differential attachment 10.Like this, can show and control the stroke of upper and lower working roll push rod 6,7, i.e. the horizontal offset of upper and lower working roll.
The utility model is based on changing the 4-roller cold rolling mill working roll will cause the variation of working roll horizontal force with respect to intermediate calender rolls center line horizontal offset Δ with respect to backing roll or six-roll cold mill working roll principle, the different rolling situations of giving chapter and verse, correspondingly move horizontally working roll, change the value of horizontal offset Δ, horizontal force is reduced, thereby reduce the device for adjusting and positioning horizontal offset for working rollers of rolling mill of work roll diameter, be applied on four rollers, the six-roll cold mill, can use the working roll littler, roll out the band steel of thin specification than conventional design.Although work roll diameter reduces, owing to regulated working roll corresponding horizontal side-play amount, thus reduced the horizontal force of working roll, make bending of work roll stress and flexural deformation still in the number range of variation allowable.
During work, control the engine 16 of upper and lower working roll push rod transmission mechanism, by decelerator 15, bevel gear decelerator 9 drives the worm spiral propeller transmission of upper and lower working roll one or both sides, the push rod of upper and lower working roll one or both sides is stretched out forward or return backward, make working roll along moving horizontally, realize the adjusting of horizontal offset; Control upper and lower balance hydraulic cylinder 3,2, fuel feeding always when keeping milling train work, its piston rod end abuts against respectively on bearing block 4,1 side of the upper and lower working roll of milling train all the time, and the opposite side that makes above-mentioned bearing block abuts against on the upper and lower push rod 6,7 of position control mechanism, makes working roll horizontal direction location.The engine 12 of control differential attachment 10 carries out moving horizontally of the upper and lower working roll bearing block of a side, realizes the adjustment of working roll horizontal direction parallel degree.
Claims (9)
1. device for adjusting and positioning horizontal offset for working rollers of rolling mill, it is characterized in that: comprise being installed on rolling-mill housing (5) the entrance side column, on milling train, bottom working roll two end axles bearing (4,1) position control mechanism that is oppositely arranged, with be installed on the milling train outlet side framework pillar, relative with the position control mechanism balanced controls that compress, described position control mechanism comprises upper push-rod (6) and lower push-rod (7), on, lower push-rod passes column, one end is resisted against, bottom working roll bearing block (4,1) a side, its other end is connected with the worm spiral propeller (8) of push rod transmission mechanism; The described balanced controls that compress comprise that balance hydraulic cylinder (3) reaches balance hydraulic cylinder (2) down, and the piston rod end of balance hydraulic cylinder is pressed on the side of upper and lower working roll bearing block (4,1).
2. device for adjusting and positioning horizontal offset for working rollers of rolling mill according to claim 1, it is characterized in that: set up a cover at the entrance side of the upper and lower working roll two end axles bearing (4,1) of milling train and compress balanced controls, set up the position control mechanism that balanced controls are oppositely arranged that compresses of a cover and entrance side at the outlet side of the upper and lower working roll two end axles bearing (4,1) of milling train.
3. device for adjusting and positioning horizontal offset for working rollers of rolling mill according to claim 1 and 2, it is characterized in that: described push rod transmission mechanism comprises the have sensor engine (16) of (14), the output shaft of this engine is connected with the decelerator with brake (17) (15), the output shaft of described decelerator (15) is connected by the bevel gear decelerator (9) of shaft coupling with the decelerator that is placed in (15) both sides, and bevel gear decelerator (9) is connected with the worm spiral propeller (8) that is positioned at the working roll two ends respectively.
4. device for adjusting and positioning horizontal offset for working rollers of rolling mill according to claim 3, it is characterized in that: one in two output shafts of described decelerator (15) is provided with differential attachment (10), and this differential attachment (10) is connected with the engine with sensor (11) (12) by brake (13).
5. device for adjusting and positioning horizontal offset for working rollers of rolling mill according to claim 1 and 2, it is characterized in that: described worm spiral propeller (8) comprises propeller and following propeller, both connect by shaft coupling, drive upper and lower push rod (6,7) respectively.
6. device for adjusting and positioning horizontal offset for working rollers of rolling mill according to claim 3 is characterized in that: described worm spiral propeller (8) comprises propeller and following propeller, and both connect by shaft coupling, drive upper and lower push rod (6,7) respectively.
7. device for adjusting and positioning horizontal offset for working rollers of rolling mill according to claim 4 is characterized in that: described worm spiral propeller (8) comprises propeller and following propeller, and both connect by shaft coupling, drive upper and lower push rod (6,7) respectively.
8. device for adjusting and positioning horizontal offset for working rollers of rolling mill according to claim 6 is characterized in that: described engine (16) is motor or hydraulic motor, and its afterbody is provided with encoder.
9. device for adjusting and positioning horizontal offset for working rollers of rolling mill according to claim 7 is characterized in that: described engine (16) is motor or hydraulic motor, and its afterbody is provided with encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920293174 CN201565467U (en) | 2009-12-17 | 2009-12-17 | Rolling mill working roll horizontal offset regulating and positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920293174 CN201565467U (en) | 2009-12-17 | 2009-12-17 | Rolling mill working roll horizontal offset regulating and positioning device |
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| Publication Number | Publication Date |
|---|---|
| CN201565467U true CN201565467U (en) | 2010-09-01 |
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ID=42657748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920293174 Expired - Lifetime CN201565467U (en) | 2009-12-17 | 2009-12-17 | Rolling mill working roll horizontal offset regulating and positioning device |
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|---|---|
| CN (1) | CN201565467U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179661A (en) * | 2011-04-19 | 2011-09-14 | 一重集团天津重工有限公司 | Method for machining frame of cold continuous rolling mill |
| CN102416496A (en) * | 2011-07-06 | 2012-04-18 | 常州宝菱重工机械有限公司 | Method for eliminating bending deformation of rolling mill-type heavy part |
| CN101733287B (en) * | 2009-12-17 | 2012-04-25 | 北京京诚之星科技开发有限公司 | Device for adjusting and positioning horizontal offset for working rollers of rolling mill |
| CN111922090A (en) * | 2020-07-09 | 2020-11-13 | 首钢京唐钢铁联合有限责任公司 | Automatic setting method and system for horizontal value of finishing mill after work roll replacement |
-
2009
- 2009-12-17 CN CN 200920293174 patent/CN201565467U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733287B (en) * | 2009-12-17 | 2012-04-25 | 北京京诚之星科技开发有限公司 | Device for adjusting and positioning horizontal offset for working rollers of rolling mill |
| CN102179661A (en) * | 2011-04-19 | 2011-09-14 | 一重集团天津重工有限公司 | Method for machining frame of cold continuous rolling mill |
| CN102179661B (en) * | 2011-04-19 | 2012-12-12 | 一重集团天津重工有限公司 | Method for machining frame of cold continuous rolling mill |
| CN102416496A (en) * | 2011-07-06 | 2012-04-18 | 常州宝菱重工机械有限公司 | Method for eliminating bending deformation of rolling mill-type heavy part |
| CN102416496B (en) * | 2011-07-06 | 2013-03-06 | 常州宝菱重工机械有限公司 | Method for eliminating bending deformation of rolling mill-type heavy part |
| CN111922090A (en) * | 2020-07-09 | 2020-11-13 | 首钢京唐钢铁联合有限责任公司 | Automatic setting method and system for horizontal value of finishing mill after work roll replacement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100901 Effective date of abandoning: 20091217 |