CN104259222B - A kind of reversing cold mill stable rolling method of operating - Google Patents
A kind of reversing cold mill stable rolling method of operating Download PDFInfo
- Publication number
- CN104259222B CN104259222B CN201410567482.9A CN201410567482A CN104259222B CN 104259222 B CN104259222 B CN 104259222B CN 201410567482 A CN201410567482 A CN 201410567482A CN 104259222 B CN104259222 B CN 104259222B
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- roll
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- force difference
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/36—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a kind of reversing cold mill stable rolling method of operating, comprise the following steps: before 1) each passage opens car, regulate and tilt to preset value, observation roll-force is poor, and adjustment is tilted, and controlled rolling power difference is between-250KN ~+250KN; 2) in the operation of rolling, by regulating, ensure that roll-force difference is stabilized between-250KN ~+250KN, 3) in milling train reduction of speed whipping process, tilt by Rule adjusting adjustment described in second step, make roll-force difference little with deviation during stable rolling, control coil of strip outer ring bleeding edge; Note regulating working roll in whipping process just curved simultaneously.This stable rolling method of operating, construct safety, efficiently tupe for reversible cold-rolling unit opens car, whipping and pair rolling, generation of preventing accident, alleviates operative employee's work load, increases work efficiency.
Description
Technical field
The present invention relates to a kind of mill operation method, specifically a kind of reversing cold mill stable rolling method of operating.
Background technology
The plurality of advantages such as reversing cold mill is widely used in cold rolled strip steel production, has input cost low, and organization of production is flexible.Sideslip refers to the phenomenon departing from rolling centerline in the operation of rolling with steel, belongs to the major accident that in Rolling production, impact is produced, loss is larger; There is no the complete intervention operation method opening car, whipping, the operation of rolling in current most of reversing cold mill operating process, prevent sideslip from mainly relying on operative employee's situ visualization to observe and regulate.There is following problem: 1, will realize opening car, whipping safety, the reasonable criterion of neither one; 2, operative employee's work on the spot amount is increased.
Summary of the invention
The object of the present invention is to provide a kind of reversing cold mill stable rolling method of operating, this stable rolling method of operating, safety, efficiently tupe is constructed for reversible cold-rolling unit opens car, whipping and pair rolling, to prevent accident generation, alleviate operative employee's work load, increase work efficiency.
The present invention solves the technical scheme that its technical problem takes: a kind of reversing cold mill stable rolling method of operating, comprises the following steps:
1) before each passage opens car, regulate and tilt to preset value, observation roll-force is poor, and adjustment is tilted, and controlled rolling power difference is between-250KN ~+250KN; If roll-force difference goes beyond the scope, outlet Tension Difference and entrance Tension Difference exceed normal value often simultaneously, then represent that band steel departs from rolling centerline many, need manual coiling band steel between frame to be extremely with steel to be in rolling centerline;
2) in the operation of rolling, by regulating, ensure that roll-force difference is stabilized between-250KN ~+250KN, concrete operations are as follows:
A, when roll-force difference is less than zero, when fluctuating to negative direction, illustrate that belt steel rolling deformed area is greatly stressed by fore side, have and be subject to pointing to the component effect of driving side, band steel can be partial to driving side, and regulate and tilt to increase, controlled rolling power difference is between-250KN ~+250KN;
B, when roll-force difference is greater than zero, when fluctuating to positive direction, illustrate belt steel rolling deformed area by driving side greatly stressed, have the component effect being subject to point operation side, band steel can be partial to fore side, regulate tilt reduce, controlled rolling power difference is between-250KN ~+250KN;
C, when roll-force difference is stabilized between-250KN ~+250KN, quick increasing speed rolling.
3) in milling train reduction of speed whipping process, tilt by Rule adjusting adjustment described in second step, make roll-force difference little with deviation during stable rolling, control coil of strip outer ring bleeding edge; Note regulating working roll in whipping process just curved simultaneously.
Further, described roll-force difference is between-100KN ~+100KN.
Further, the computing formula of described roll-force difference is: Pdif=Pds-Pos.
The invention has the beneficial effects as follows:
1, according to opening roll-force difference size in car process, manually intervening reasonable adjusting milling train and tilting, roll-force difference being in stability range, thus making milling train open car process stabilization, prevent from opening car sideslip broken belt.
2., according to roll-force difference size in whipping process, manual intervention reasonable adjusting milling train tilts, and roll-force difference is in stability range, thus makes milling train a time whipping process stabilization, prevent a time whipping sideslip broken belt, other passage whippings of milling train can prevent bleeding edge defect from producing; Note regulating working roll in whipping process just curved simultaneously.
3, according to roll-force difference size in the operation of rolling, reasonable adjusting milling train tilts, and roll-force difference is in stability range, thus makes mill milling process stabilization, effectively can avoid monolateral shape wave defect.
4, this stable rolling method of operating comparatively conventional method compare, effectively reduce complexity and the uncertainty of execute-in-place, operative employee can reduce unnecessary workload in the reasonable scope, application operating is easy, there is good generality, adaptability and portability, the cold rolling operation of different iron and steel enterprise can be applicable to.
Accompanying drawing explanation
Fig. 1 is certain reversible single stand cold mill unit layout drawing of the present invention;
Fig. 2 is Cold Rolling deformed area force analysis figure of the present invention;
Fig. 3 is reversible single stand cold mill roll-force of the present invention difference display interface schematic diagram;
Detailed description of the invention
With reference to Figure of description to a kind of reversing cold mill stable rolling method of operating of the present invention, be described in detail below.
As shown in the figure, a kind of reversing cold mill stable rolling method of operating of the present invention, comprises the following steps:
1) before each passage opens car, regulate and tilt to preset value, observation roll-force is poor, and adjustment is tilted, and controlled rolling power difference is between-250KN ~+250KN; If roll-force difference goes beyond the scope, outlet Tension Difference and entrance Tension Difference exceed normal value often simultaneously, then represent that band steel departs from rolling centerline many, need manual coiling band steel between frame to be extremely with steel to be in rolling centerline; Open car process and manually intervene HGC according to opening roll-force difference size in car process, reasonable adjusting milling train tilts, and roll-force difference is in stability range, thus makes milling train open car process stabilization, prevent from opening car sideslip broken belt;
2) in the operation of rolling, by regulating, ensure that roll-force difference is stabilized between-250KN ~+250KN, concrete operations are as follows:
A, when roll-force difference is less than zero, when fluctuating to negative direction, illustrate that belt steel rolling deformed area is greatly stressed by fore side, have and be subject to pointing to the component effect of driving side, band steel can be partial to driving side, and regulate and tilt to increase, controlled rolling power difference is between-250KN ~+250KN;
B, when roll-force difference is greater than zero, when fluctuating to positive direction, illustrate belt steel rolling deformed area by driving side greatly stressed, have the component effect being subject to point operation side, band steel can be partial to fore side, regulate tilt reduce, controlled rolling power difference is between-250KN ~+250KN;
C, when roll-force difference is stabilized between-250KN ~+250KN, quick increasing speed rolling.
The operation of rolling manually intervenes HGC (3) according to roll-force difference size in the operation of rolling, and reasonable adjusting milling train tilts, and roll-force difference is in stability range, thus makes mill milling process stabilization, effectively can avoid monolateral shape wave defect.
When it should be noted that roll-force difference is zero, the axis that is subject in contact in rolling of band steel is just not necessarily zero with joint efforts, suffered make a concerted effort be zero equilbrium position be subject to the factors such as band gad shape, roll crown and affect.Considering herein to get rid of other factors, is zero carry out analysis operation as band steel poised state using roll-force difference.
3) in milling train reduction of speed whipping process, tilt by Rule adjusting adjustment described in second step, make roll-force difference little with deviation during stable rolling, control coil of strip outer ring bleeding edge; Note regulating working roll in whipping process just curved simultaneously.Whipping process manually intervenes HGC (2) according to roll-force difference size in whipping process, reasonable adjusting milling train tilts, roll-force difference is made to be in stability range, thus make milling train a time whipping process stabilization, prevent a time whipping sideslip broken belt, other passage whippings of milling train can prevent bleeding edge defect from producing; Note regulating working roll in whipping process just curved simultaneously.
Described roll-force difference is between-100KN ~+100KN.
Further, the computing formula of described roll-force difference is: Pdif=Pds-Pos.
Pdif is that roll-force is poor, and Pds is driving side roll-force, Pos fore side roll-force.
Embodiment one:
1) before each passage opens car, regulate and tilt to preset value, observation roll-force is poor, and adjustment is tilted, and controlled rolling power difference is between-100KN ~+100KN; If roll-force difference goes beyond the scope, outlet Tension Difference and entrance Tension Difference exceed normal value often simultaneously, then represent that band steel departs from rolling centerline many, need manual coiling band steel between frame to be extremely with steel to be in rolling centerline;
2) in the operation of rolling, by regulating, ensure that roll-force difference is stabilized between-100KN ~+100KN, concrete operations are as follows:
A, when roll-force difference is less than zero, when fluctuating to negative direction, illustrate that belt steel rolling deformed area is greatly stressed by fore side, have and be subject to pointing to the component effect of driving side, band steel can be partial to driving side, and regulate and tilt to increase, controlled rolling power difference is between-100KN ~+100KN;
B, when roll-force difference is greater than zero, when fluctuating to positive direction, illustrate belt steel rolling deformed area by driving side greatly stressed, have the component effect being subject to point operation side, band steel can be partial to fore side, regulate tilt reduce, controlled rolling power difference is between-100KN ~+100KN;
C, when roll-force difference is stabilized between-100KN ~+100KN, quick increasing speed rolling.
3) in milling train reduction of speed whipping process, tilt by Rule adjusting adjustment described in second step, make roll-force difference little with deviation during stable rolling, control coil of strip outer ring bleeding edge; Note regulating working roll in whipping process just curved simultaneously.
Main key points for operation are: when roll-force difference fluctuates to negative direction, regulate and tilt to increase; When roll-force difference fluctuates to positive direction, regulate and tilt to reduce; Roll-force difference fluctuates less in controlled range, more can increasing speed rolling; Note regulating working roll in whipping process just curved simultaneously.
Stable rolling method of operating of the present invention comparatively conventional method is compared, effectively reduce complexity and the uncertainty of execute-in-place, operative employee can reduce unnecessary workload in the reasonable scope, application operating is easy, there is good generality, adaptability and portability, the cold rolling operation of different iron and steel enterprise can be applicable to.
Sideslip refers to the phenomenon departing from rolling centerline in the operation of rolling with steel herein, belongs to the major accident that in Rolling production, impact is produced, loss is larger; Inclination control is a part for HGC (hydraulic roll gap control) herein, is realized by the alternate position spike of fore side and transmission side; Tilt to increase to improve reduction fore side position, driving side position herein, tilt to be reduced to reduction driving side position and improve fore side position.
Except technical characteristic described in description, all the other technical characteristics are those skilled in the art's known technology.
Claims (3)
1. a reversing cold mill stable rolling method of operating, is characterized in that, comprises the following steps:
1) before each passage opens car, regulate and tilt to preset value, observation roll-force is poor, and adjustment is tilted, and controlled rolling power difference is between-250KN ~+250KN; If roll-force difference goes beyond the scope, outlet Tension Difference and entrance Tension Difference exceed normal value often simultaneously, then represent that band steel departs from rolling centerline many, need manual coiling band steel between frame to be extremely with steel to be in rolling centerline;
2) in the operation of rolling, by regulating, ensure that roll-force difference is stabilized between-250KN ~+250KN, concrete operations are as follows:
A, when roll-force difference is less than zero, when fluctuating to negative direction, illustrate that belt steel rolling deformed area is greatly stressed by fore side, have and be subject to pointing to the component effect of driving side, band steel can be partial to driving side, and regulate and tilt to increase, controlled rolling power difference is between-250KN ~+250KN;
B, when roll-force difference is greater than zero, when fluctuating to positive direction, illustrate belt steel rolling deformed area by driving side greatly stressed, have the component effect being subject to point operation side, band steel can be partial to fore side, regulate tilt reduce, controlled rolling power difference is between-250KN ~+250KN;
C, when roll-force difference is stabilized between-250KN ~+250KN, quick increasing speed rolling.
3) in milling train reduction of speed whipping process, by the 2nd) adjustment of the Rule adjusting of step tilts, makes roll-force difference little with deviation during stable rolling, control coil of strip outer ring bleeding edge; Note regulating working roll in whipping process just curved simultaneously.
2. a kind of reversing cold mill stable rolling method of operating according to claim 1, it is characterized in that, described roll-force difference is between-100KN ~+100KN.
3. a kind of reversing cold mill stable rolling method of operating according to claim 1, it is characterized in that, the computing formula of described roll-force difference is: Pdif=Pds-Pos, Pdif are that roll-force is poor, and Pds is driving side roll-force, Pos fore side roll-force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567482.9A CN104259222B (en) | 2014-10-22 | 2014-10-22 | A kind of reversing cold mill stable rolling method of operating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567482.9A CN104259222B (en) | 2014-10-22 | 2014-10-22 | A kind of reversing cold mill stable rolling method of operating |
Publications (2)
| Publication Number | Publication Date |
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| CN104259222A CN104259222A (en) | 2015-01-07 |
| CN104259222B true CN104259222B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410567482.9A Expired - Fee Related CN104259222B (en) | 2014-10-22 | 2014-10-22 | A kind of reversing cold mill stable rolling method of operating |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478473B (en) * | 2015-12-25 | 2017-08-11 | 中冶南方工程技术有限公司 | The passage of reversable cold-rolling machine first closes roll gap whipping milling method |
| CN105728473B (en) * | 2016-04-25 | 2018-06-08 | 中冶南方工程技术有限公司 | A kind of control method for preventing strip sideslip in the first passage operation of rolling |
| CN108838215B (en) * | 2018-06-29 | 2020-09-18 | 首钢京唐钢铁联合有限责任公司 | Inclination adjusting method and device for rolling mill |
| CN110153202B (en) * | 2019-06-21 | 2020-09-11 | 安阳钢铁股份有限公司 | Automatic horizontal adjustment method for roll gap of rolling mill |
| CN114535312A (en) * | 2020-11-24 | 2022-05-27 | 宝山钢铁股份有限公司 | Self-correcting method for coil diameter and coil length of strip steel of single-stand rolling mill |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10263613A (en) * | 1997-03-19 | 1998-10-06 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling method with reversing cold mill and rolling controller |
| JP2002066619A (en) * | 2000-08-30 | 2002-03-05 | Sumitomo Metal Ind Ltd | Cold rolling method for steel strip |
| CN101733290A (en) * | 2008-11-18 | 2010-06-16 | 鞍钢股份有限公司 | Automatic control system for preventing drift of hot continuous rolling thin strip steel |
| CN102248006A (en) * | 2011-05-31 | 2011-11-23 | 中冶南方工程技术有限公司 | Double-closed-loop hydraulic control method for roll bending and balancing of working roll |
| CN103785694A (en) * | 2013-11-22 | 2014-05-14 | 首钢总公司 | Method for preventing strip breakage on startup |
-
2014
- 2014-10-22 CN CN201410567482.9A patent/CN104259222B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10263613A (en) * | 1997-03-19 | 1998-10-06 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling method with reversing cold mill and rolling controller |
| JP2002066619A (en) * | 2000-08-30 | 2002-03-05 | Sumitomo Metal Ind Ltd | Cold rolling method for steel strip |
| CN101733290A (en) * | 2008-11-18 | 2010-06-16 | 鞍钢股份有限公司 | Automatic control system for preventing drift of hot continuous rolling thin strip steel |
| CN102248006A (en) * | 2011-05-31 | 2011-11-23 | 中冶南方工程技术有限公司 | Double-closed-loop hydraulic control method for roll bending and balancing of working roll |
| CN103785694A (en) * | 2013-11-22 | 2014-05-14 | 首钢总公司 | Method for preventing strip breakage on startup |
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| CN104259222A (en) | 2015-01-07 |
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Granted publication date: 20160413 Termination date: 20181022 |