CN113941605B - Tear-resistant roller control method - Google Patents
Tear-resistant roller control method Download PDFInfo
- Publication number
- CN113941605B CN113941605B CN202111197796.0A CN202111197796A CN113941605B CN 113941605 B CN113941605 B CN 113941605B CN 202111197796 A CN202111197796 A CN 202111197796A CN 113941605 B CN113941605 B CN 113941605B
- Authority
- CN
- China
- Prior art keywords
- roller
- tearing
- center line
- coil
- uncoiler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000000881 depressing effect Effects 0.000 claims description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0064—Uncoiling the rolled product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a control method of a tearing-preventing roller, which is characterized in that during the uncoiling process, the coil diameter of a steel coil is detected and uploaded in real time, the pressing position of the tearing-preventing roller is controlled in real time through a pressing cylinder, and a pressing cylinder control target is determined according to the geometric relationship among a tension roller, the tearing-preventing roller and a steel belt on an uncoiler, so that the tearing-preventing roller floats along with the coil diameter of the steel coil, and the wrap angle of the steel belt and the tearing-preventing roller is ensured to be stable and unchanged. The method can ensure that the wrap angle between the steel belt and the anti-tearing roller is stable and unchanged in the uncoiling process, avoid the problem of local tearing of the surface of the steel belt in the uncoiling process, and avoid the problem of unstable inlet tension caused by larger fluctuation of sudden tension release in the uncoiling process.
Description
Technical Field
The invention belongs to the field of cold rolling, and particularly relates to a tearing-resistant roller control method.
Background
In the cold rolling leveling production, the adhesion phenomenon is easy to occur between the annealed layers of the steel coil, and in the uncoiling process, the adhesion point is suddenly pulled open due to the action of tension, and the surface of the steel belt is locally torn, so that the surface quality problem is caused; in addition, the bonding is suddenly opened, the tension suddenly released can generate larger fluctuation, and the unstable inlet tension can also be caused to influence the product quality. In order to effectively avoid the problems, the anti-tearing roller is arranged between the uncoiler and the tension roller, and the anti-tearing roller presses the steel strip in the whole uncoiling process, so that the tearing defect can be effectively reduced, and the uncoiling tension can be stabilized. However, the current position of the anti-tearing roller is fixed, the wrap angle of the steel belt and the anti-tearing roller is continuously changed along with the change of the winding diameter, and the effect of the anti-tearing roller is affected.
Disclosure of Invention
The invention aims to provide a tearing-resistant roller control method, which can ensure that the wrap angle between a steel belt and the tearing-resistant roller is stable and unchanged in the uncoiling process, avoid the problem of local tearing of the surface of the steel belt in the uncoiling process, and avoid the problem of unstable inlet tension caused by larger fluctuation of sudden tension release in the uncoiling process.
The technical scheme adopted by the invention is as follows:
a control method of a tearing-proof roller comprises the steps of detecting and uploading the coil diameter of a steel coil in real time in an uncoiling process, controlling the pressing position of the tearing-proof roller through a pressing cylinder in real time, determining a pressing cylinder control target according to the geometric relation of a tension roller, the tearing-proof roller and a steel belt on an uncoiler, enabling the tearing-proof roller to float along with the coil diameter of the steel coil, and guaranteeing the wrap angle of the steel belt and the tearing-proof roller to be stable and unchanged.
Further, the calculation formula of the wrap angle alpha of the steel strip and the tearing-proof roller is as follows:
wherein a is the distance between the center line of the anti-tearing roller and the center line of the uncoiler in the horizontal direction, b is the distance between the center line of the anti-tearing roller and the center line of the uncoiler in the vertical direction, m is the distance between the center line of the anti-tearing roller and the center line of the tension roller in the horizontal direction, n is the distance between the center line of the tension roller and the center line of the uncoiler in the vertical direction, R is the real-time coil diameter of the steel coil, R is the outer diameter of the anti-tearing roller, and e is the outer diameter of the tension roller; since α is set to a fixed value and a, m, n, R, e is set to a fixed value, the corresponding b can be obtained by inputting R, and the depressing cylinder control target can be determined.
Further, during unwinding, each time R is reduced by one unit, b performs a calculation to determine a new control target for the hold-down cylinder until r=r min When b is no longer changed, R min The coil diameter is the smallest when the coil is uncoiled.
Further, before uncoiling, the wrap angle alpha of the steel strip and the anti-tearing roller is set according to the requirement, and then the initial value R of the coil diameter of the steel coil is set 0 Determining an initial value b of the distance between the center line of the anti-tearing roller and the center line of the uncoiler in the vertical direction 0 。
Further, the center line of the tearing-proof roller is 400-1000 mm away from the center line of the uncoiler in the horizontal direction.
Further, a stroke detection mechanism is matched with the pressing cylinder.
The beneficial effects of the invention are as follows:
the method can ensure that the wrap angle between the steel belt and the anti-tearing roller is stable and unchanged in the uncoiling process, avoid the problem of local tearing of the surface of the steel belt in the uncoiling process, and avoid the problem of unstable inlet tension caused by larger fluctuation of sudden tension release in the uncoiling process.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a control program schematic block diagram in the embodiment of the present invention.
In the figure: 1-a tension roller; 2-stroke detection mechanism; 3-pressing down the cylinder; 4-a tear resistant roller; 5-steel strip; 6-coil of steel.
Detailed Description
The invention is further described below with reference to the drawings and examples.
In the uncoiling process, the coil diameter of a steel coil 6 is detected and uploaded in real time, the pressing position of the anti-tearing roller 4 is controlled in real time through a pressing cylinder 3, a control target of the pressing cylinder 3 is determined according to the geometric relation of a tension roller 1, the anti-tearing roller 4 and a steel belt 5 on an uncoiler, the anti-tearing roller 4 floats along with the coil diameter of the steel coil 6, the wrap angle of the steel belt 5 and the anti-tearing roller 4 is ensured to be stable and unchanged, and as shown in figure 1, in the embodiment, a stroke detection mechanism 2 is matched on the pressing cylinder 3.
The calculation formula of the wrap angle α between the steel strip 5 and the tear-preventing roller 4 is:
as shown in fig. 1, a is the distance between the center line of the anti-tearing roller 4 and the center line of the uncoiler in the horizontal direction, b is the distance between the center line of the anti-tearing roller 4 and the center line of the uncoiler in the vertical direction, m is the distance between the center line of the anti-tearing roller 4 and the center line of the tension roller 1 in the horizontal direction, n is the distance between the center line of the tension roller 1 and the center line of the uncoiler in the vertical direction, R is the real-time coil diameter of the steel coil 6, R is the outer diameter of the anti-tearing roller 4, and e is the outer diameter of the tension roller 1; since α is set to a fixed value and a, m, n, R, e is set to a fixed value, the corresponding b can be obtained by inputting R, and the control target of the reduction cylinder 3 can be determined.
As shown in fig. 2, in the present embodiment, every time R is reduced by one unit (the unit size is set according to the control accuracy and the actual demand) during unwinding, b performs a calculation to determine a new control target of the pressing cylinder 3 until R is less than or equal to R min When b is no longer changed, R min The minimum coil diameter of the steel coil 6 is the same as the coil diameter when uncoiling.
In the present embodiment, as shown in FIG. 2, before unwinding, the wrap angle α between the steel strip 5 and the tear-preventing roller 4 is set as required, and then the initial value R of the coil diameter of the coil 6 is set 0 Determining an initial value b of the distance between the center line of the anti-tearing roll 4 and the center line of the uncoiler in the vertical direction 0 。
In this embodiment the centre line of the tear-resistant roll 4 is 400-1000 mm in the horizontal direction from the centre line of the unwinder.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (5)
1. A method of controlling a tear resistant roll, characterized by: in the uncoiling process, the coil diameter of the steel coil is detected and uploaded in real time, the pressing-down position of the anti-tearing roller is controlled through the pressing-down cylinder in real time, and a control target of the pressing-down cylinder is determined according to the geometric relation of the tension roller, the anti-tearing roller and the steel belt on the uncoiler, so that the anti-tearing roller floats along with the coil diameter of the steel coil, and the wrap angle of the steel belt and the anti-tearing roller is ensured to be stable and unchanged;
the calculation formula of the wrap angle alpha of the steel belt and the tearing-proof roller is as follows:
wherein a is the distance between the center line of the anti-tearing roller and the center line of the uncoiler in the horizontal direction, b is the distance between the center line of the anti-tearing roller and the center line of the uncoiler in the vertical direction, m is the distance between the center line of the anti-tearing roller and the center line of the tension roller in the horizontal direction, n is the distance between the center line of the tension roller and the center line of the uncoiler in the vertical direction, R is the real-time coil diameter of the steel coil, R is the outer diameter of the anti-tearing roller, and e is the outer diameter of the tension roller; since α is set to a fixed value and a, m, n, R, e is set to a fixed value, the corresponding b can be obtained by inputting R, and the depressing cylinder control target can be determined.
2. The method of controlling a tear resistant roll according to claim 1 wherein: during unwinding, each time R is reduced by one unit, b performs a calculation to determine a new control target for the hold-down cylinder until r=r min When b is no longer changed, R min The coil diameter is the smallest when the coil is uncoiled.
3. The method of controlling a tear resistant roll according to claim 1 wherein: before uncoiling, firstly setting the wrap angle alpha of the steel belt and the anti-tearing roller according to the requirement, and then setting the initial value R of the coil diameter of the steel coil 0 Determining an initial value b of the distance between the center line of the anti-tearing roller and the center line of the uncoiler in the vertical direction 0 。
4. A tear-resistant roller control method according to any one of claims 1 to 3, characterized in that: the center line of the tearing-proof roller is 400-1000 mm away from the center line of the uncoiler in the horizontal direction.
5. A tear-resistant roller control method according to any one of claims 1 to 3, characterized in that: the pressing cylinder is matched with a stroke detection mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111197796.0A CN113941605B (en) | 2021-10-14 | 2021-10-14 | Tear-resistant roller control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111197796.0A CN113941605B (en) | 2021-10-14 | 2021-10-14 | Tear-resistant roller control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113941605A CN113941605A (en) | 2022-01-18 |
| CN113941605B true CN113941605B (en) | 2023-10-27 |
Family
ID=79330456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111197796.0A Active CN113941605B (en) | 2021-10-14 | 2021-10-14 | Tear-resistant roller control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113941605B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB555676A (en) * | 1942-03-30 | 1943-09-02 | W H A Robertson & Co Ltd | Improvements relating to the control of the tension in lengths of material passing between coiling and uncoiling mechanisms |
| JPH04294813A (en) * | 1991-03-20 | 1992-10-19 | Nisshin Steel Co Ltd | Preventing roll for buckling wave and wrinkle, etc., generated on passing extra thin metal strip and its use method |
| JPH07112209A (en) * | 1993-10-18 | 1995-05-02 | Nippon Steel Corp | Method for preventing fluting at time of uncoiling hot rolled steel sheet coil |
| JP2000301237A (en) * | 1999-04-20 | 2000-10-31 | Nippon Steel Corp | Method and device for uncoiling steel strip coil |
| JP2007152411A (en) * | 2005-12-07 | 2007-06-21 | Nippon Steel Corp | Method and device for absorbing tension impact when providing tension in steel strip |
| CN1986097A (en) * | 2006-12-14 | 2007-06-27 | 中冶南方工程技术有限公司 | Method and device for preventing tearing of strip steel in unwinding |
| CN101920267A (en) * | 2009-06-09 | 2010-12-22 | 鞍钢股份有限公司 | Variable wrap angle flatness control parameter processing method for cold rolling mill |
| CN102806235A (en) * | 2012-08-17 | 2012-12-05 | 中冶南方工程技术有限公司 | Online calculating method for wrap angle of cold-rolled strip steel plate shape roll |
| CN203459459U (en) * | 2013-07-25 | 2014-03-05 | 北京蒂本斯工程技术有限公司 | Anti-tear roller device |
| CN106001177A (en) * | 2016-05-30 | 2016-10-12 | 北京首钢股份有限公司 | Anti-rolling-fracture roller of hot rolling temper mill and application method of anti-rolling-fracture roller |
| CN205763046U (en) * | 2016-06-27 | 2016-12-07 | 中冶赛迪工程技术股份有限公司 | A kind of strip steel back-flexing controls device |
| CN108160715A (en) * | 2017-12-26 | 2018-06-15 | 包头钢铁（集团）有限责任公司 | A kind of control method of low-carbon hot-rolled steel uncoiling cross break print |
| CN207806240U (en) * | 2018-02-02 | 2018-09-04 | 东海新材料有限公司 | A kind of anti-tear decoiling equipment of single stand skin pass mill machine strip |
| CN210907455U (en) * | 2019-10-31 | 2020-07-03 | 中铝河南洛阳铝加工有限公司 | Anti-sticking device for uncoiling of aluminum alloy finishing equipment |
-
2021
- 2021-10-14 CN CN202111197796.0A patent/CN113941605B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB555676A (en) * | 1942-03-30 | 1943-09-02 | W H A Robertson & Co Ltd | Improvements relating to the control of the tension in lengths of material passing between coiling and uncoiling mechanisms |
| JPH04294813A (en) * | 1991-03-20 | 1992-10-19 | Nisshin Steel Co Ltd | Preventing roll for buckling wave and wrinkle, etc., generated on passing extra thin metal strip and its use method |
| JPH07112209A (en) * | 1993-10-18 | 1995-05-02 | Nippon Steel Corp | Method for preventing fluting at time of uncoiling hot rolled steel sheet coil |
| JP2000301237A (en) * | 1999-04-20 | 2000-10-31 | Nippon Steel Corp | Method and device for uncoiling steel strip coil |
| JP2007152411A (en) * | 2005-12-07 | 2007-06-21 | Nippon Steel Corp | Method and device for absorbing tension impact when providing tension in steel strip |
| CN1986097A (en) * | 2006-12-14 | 2007-06-27 | 中冶南方工程技术有限公司 | Method and device for preventing tearing of strip steel in unwinding |
| CN101920267A (en) * | 2009-06-09 | 2010-12-22 | 鞍钢股份有限公司 | Variable wrap angle flatness control parameter processing method for cold rolling mill |
| CN102806235A (en) * | 2012-08-17 | 2012-12-05 | 中冶南方工程技术有限公司 | Online calculating method for wrap angle of cold-rolled strip steel plate shape roll |
| CN203459459U (en) * | 2013-07-25 | 2014-03-05 | 北京蒂本斯工程技术有限公司 | Anti-tear roller device |
| CN106001177A (en) * | 2016-05-30 | 2016-10-12 | 北京首钢股份有限公司 | Anti-rolling-fracture roller of hot rolling temper mill and application method of anti-rolling-fracture roller |
| CN205763046U (en) * | 2016-06-27 | 2016-12-07 | 中冶赛迪工程技术股份有限公司 | A kind of strip steel back-flexing controls device |
| CN108160715A (en) * | 2017-12-26 | 2018-06-15 | 包头钢铁（集团）有限责任公司 | A kind of control method of low-carbon hot-rolled steel uncoiling cross break print |
| CN207806240U (en) * | 2018-02-02 | 2018-09-04 | 东海新材料有限公司 | A kind of anti-tear decoiling equipment of single stand skin pass mill machine strip |
| CN210907455U (en) * | 2019-10-31 | 2020-07-03 | 中铝河南洛阳铝加工有限公司 | Anti-sticking device for uncoiling of aluminum alloy finishing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113941605A (en) | 2022-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102581067B (en) | Hot-rolled coiler pinch roll controlling method | |
| US20040177666A1 (en) | Cold rolling mill and method for cold roll forming a metallic strip | |
| US10413949B2 (en) | Method of and apparatus for rolling strip of fluctuating thickness | |
| US20220126339A1 (en) | Setup condition determining method for manufacturing facilities, mill setup value determining method for rolling mill, mill setup value determining device for rolling mill, product manufacturing method, and rolled material manufacturing method | |
| CN104043685A (en) | Method and device for control of reeling machine pinch roll at the moment of biting | |
| CN113941605B (en) | Tear-resistant roller control method | |
| JP2004027315A (en) | Method and apparatus for manufacturing hot dip metal-coated steel plate | |
| JP2011189404A (en) | Temper rolling mill having excellent roughness transfer efficiency, and temper rolling method | |
| JP4927008B2 (en) | Method for predicting deformation resistance of metal strip and method for setting up cold tandem rolling mill | |
| CN111085571A (en) | Method for eliminating transverse roll marks after strip steel is leveled | |
| JP2002172406A (en) | Method for correcting plate thickness by rolling mill | |
| JPWO2010029624A1 (en) | Rolling speed control method for cold tandem rolling mill | |
| JP3636151B2 (en) | Metal strip manufacturing method | |
| JPH11123454A (en) | Tension fluctuation suppression device of steel sheet coiling machine | |
| CN115335158A (en) | Method, control system and production line for controlling the strip flatness of rolled material | |
| JP2010214422A (en) | Temper rolling method of steel sheet | |
| JP2902383B2 (en) | Control method of elongation in temper rolling | |
| JP2002001410A (en) | Method for controlling surface roughness of steel band in temper rolling | |
| KR20040056279A (en) | Continuous cold rolling method of sheet steel | |
| JP2012183578A (en) | Method of controlling plate thickness and plate thickness controller in cold rolling mill | |
| JP2011240353A (en) | Method for predicting rolling load of foil rolling, method for predicting shape of the foil rolling, and method for determining pass schedule for the foil rolling | |
| JP4516834B2 (en) | Cold rolling equipment and cold tandem rolling method | |
| TW202010580A (en) | Method and computer program product for regulating pressure from wrap rolls to steel belt | |
| JP2007105740A (en) | Method of wet-type skin pass rolling, and rolling mill therefor | |
| JP2005161373A (en) | Method for controlling shape in cold tandem mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |