CN106424157B - Control method and device for preventing leveling machine working roll from being scratched - Google Patents
Control method and device for preventing leveling machine working roll from being scratched Download PDFInfo
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- CN106424157B CN106424157B CN201611034452.7A CN201611034452A CN106424157B CN 106424157 B CN106424157 B CN 106424157B CN 201611034452 A CN201611034452 A CN 201611034452A CN 106424157 B CN106424157 B CN 106424157B
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- working roll
- tension
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- machine
- steel
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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
- B21B37/48—Tension control; Compression control
-
- 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
-
- 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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
-
- 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
- B21B2001/228—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 skin pass rolling or temper rolling
-
- 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
- B21B2015/0057—Coiling the rolled product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention belongs to the technical field of metallurgical industry, and discloses a control method for preventing a leveling machine working roll from being scratched, which comprises the following steps: a pre-tension control step, namely when tension is established in a machine, firstly establishing pre-tension according to 40% of set tension, and then continuing to establish the set tension after delaying T1; a step of controlling the tail plate shape of the strip after steel throwing, wherein when steel throwing operation is executed, the flattening machine and the coiling machine are stopped after T2 delay, and a pinch roll of the straightening machine is pressed down; a residual tension relieving step, namely, after the pinch roll of the straightening machine is pressed down to an extreme limit, executing tension removing operation; and the coiler reverses at inching speed for a time period T3. The invention provides a method for inhibiting abnormal scratching of a working roll.
Description
Technical field
The present invention relates to technical field of metallurgy industry, more particularly to a kind of control method for preventing planisher working roll from scratching
And device.
Background technology
Demand of the existing market to Thin Specs, high-strength hot-rolled coiled sheet quickly increases, to product surface quality and mechanicalness
It can be it is also proposed that requirements at the higher level, for strip after hot-rolled leveling process, can eliminate strip yield point elongation improves mechanical property.
But since hot rolling and leveling machine is rolled close to room temperature and causes working roll normal wear serious without rolling lubrication, especially
Control method for rolling causes working roll scuffing to be seriously a problem of hot-rolled leveling rolling at present, and can be mainly reflected in eliminate
Working roll is improper to scratch the key for becoming and extending working roll active time and improving strip surface quality.
In the prior art, producing line it is structural due to, cause it is improper scratch be difficult effectively inhibit.
Invention content
The present invention provides a kind of control method and device for preventing planisher working roll from scratching, and solution inhibits in the prior art
The technical issues of improper scuffing of working roll lacks efficiently, responsible measures.
In order to solve the above technical problems, the present invention provides a kind of control method for preventing planisher working roll from scratching, packet
It includes：
Pretension rate-determining steps first establish pretension, be delayed T1 later when machine is set up and opened according to the 40% of setting tension
It is further continued for establishing to setting tension；
Magnetic tape trailer plate form control step is stopped after planisher and coiling machine delay T2, is rectified when executing throwing steel operation after throwing steel
Straight machine pinch roller pressure；
Remaining tension is let out except step, and after straightener pinch roller depresses to limit position, an operation is removed in execution；And it is described to batch
Machine is inverted with crawl speed, duration T 3.
Further, the value range of T1 is 3~10s.
Further, the acquisition methods of T2 include：
According to formulaT2 is calculated；
Wherein, L is to throw distance of the strip tail end apart from straightener after steel；N is fixed value, 400~700mm of value range；V
For unit crawl speed.
Further, the value range of T3 is 1~5s.
A kind of planisher working roll scuffing control device, including：
Pretension control module first establishes pretension, be delayed T1 later when machine is set up and opened according to the 40% of setting tension
It is further continued for establishing to setting tension；
Steel control module is thrown, when executing throwing steel operation, is stopped after planisher and coiling machine delay T2, straightener pinches roll-in
Under；
Remaining tension is let out except module, coiling machine invert control module, and after straightener pinch roller depresses to limit position, execution is removed
Open operation；And the coiling machine is inverted with crawl speed, duration T 3.
Further, the value range of T1 is 3~10s.
Further, the acquisition methods of T2 include：
According to formulaT2 is calculated；
Wherein, L is to throw distance of the strip tail end apart from straightener after steel；N is fixed value, 400~700mm of value range；V
For unit crawl speed.
Further, the value range of T3 is 1~5s.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages：
The control method and device for preventing planisher working roll from scratching provided in the embodiment of the present application, by building stage by stage
, and delay rhythm is executed, avoid working roll and support roller caused by being established due to one step of hightension during machine establishment is opened
Slipping phenomenon between roll surface, so as to avoid working caused by skidding, roll surface scratches；Pass through the delay of planisher and coiling machine
Parking and pinch roller pressing operation, tail part of band steel is at straightener inlet pinch roller when planisher being made to stop, and ensures strip
Tail portion, in type is upwarped, avoids scratching caused by detaining to working roll roll surface under tail portion when passing through planisher；It is inverted by coiling machine
Operation, the Minimal Tension that will be present between planisher and coiling machine, which is let out, to be removed, and during preventing working roll from lifting, strip drives work
Roller is frustrated with support roller, and working roll roll surface is caused to scratch.
Description of the drawings
Fig. 1 is the control method flow chart provided in an embodiment of the present invention for preventing planisher working roll from scratching；
Fig. 2 is the control process flow chart provided in an embodiment of the present invention for preventing planisher working roll from scratching.
Specific implementation mode
The embodiment of the present application is solved existing by providing a kind of control method and device for preventing planisher working roll from scratching
The technical issues of improper scuffing of inhibition working roll lacks efficiently in technology, responsible measures；Reach inhibition work roll surface to draw
The technique effect of wound.
In order to solve the above technical problems, the general thought that the embodiment of the present application provides technical solution is as follows：
It is analyzed based on the reason of improper scuffing：Being all made of a step when machine establishment and establishing to setting tension leads to working roll
It mutually skids with support roller, work roll surface is caused to generate scuffing；Smooth magnetic tape trailer shape is mostly lower button-type, and button-type magnetic tape trailer passes through instantly
When crossing planisher, working roll lower roll is caused to scratch；Compressor emergency shutdown planisher roll gap is present in coiling machine and planisher when lifting
Between Minimal Tension by drive strip slide to cause working roll to be frustrated with support roller, cause working roll roll surface scratch make
With working roll rub phenomenon occurs for strip.Current control method can not eliminate working roll and scratch phenomenon, and working roll will be caused to take
Time shortening is used as a servant, strip surface quality reduces.
Targetedly, in a process of building, magnetic tape trailer Strip Shape Control and remaining mild tension condition realization are non-for corresponding difference
It is normal to scratch control.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than to the restriction of technical scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
Referring to Fig. 1, a kind of control method for preventing planisher working roll from scratching provided in an embodiment of the present invention, including：
Pretension rate-determining steps first establish pretension, be delayed T1 later when machine is set up and opened according to the 40% of setting tension
It is further continued for establishing to setting tension；
Magnetic tape trailer plate form control step is stopped after planisher and coiling machine delay T2, is rectified when executing throwing steel operation after throwing steel
Straight machine pinch roller pressure；
After straightener pinch roller depresses to limit position, an operation is removed in execution；And the coiling machine is inverted with crawl speed,
Duration T 3.
Specifically, using pretension control be by machine set up when, first establish setting tension 40% pretension,
Then delay T1 is further continued for foundation to setting tension to realize；Wherein, the value range of parameter T1 is 3-10s so that when pre-
Tension foundation resettles setting tension after stablizing.Control can eliminate unit when building, work caused by being established due to tension
Make slipping phenomenon between roller and support roller roll surface, avoids scratching due to working roll caused by slippage of roll face.
Throwing magnetic tape trailer plate form control after steel is delayed T2 shutdown by the planisher after throwing steel and coiling machine, and after increasing shutdown
Straightener pinch roller press control.
Specifically, the distance L with back range straightener, unit crawl speed V and fixed value N after throwing steel are obtained, is then led to
It crosses L-N/V and calculates planisher and coiling machine downtime T2 after acquisition throwing steel so that tail part of band steel, which is in, when planisher stops rectifys
At straight machine entrance pinch roll, triggering straightener inlet pinch roller is depressed automatically, ensures that tail part of band steel is presented when passing through planisher
Type is stuck up, avoids scratching caused by detaining to working roll roll surface under tail portion.
Further, the acquisition methods of T2 include：
According to formulaT2 is calculated；
Wherein, L is to throw distance of the strip tail end apart from straightener after steel；N is fixed value, 400~700mm of value range；V
For unit crawl speed.
Minimal Tension is let out except control after throwing steel：After unit throws the pressure of steel parking straightener pinch roller in place, coiling machine is with point
Speed Reverse T3 is moved, then planisher working roll lifts.The Minimal Tension that will be present between planisher and coiling machine, which is let out, to be removed, parameter
T3 values are 1-5s.Increase this control can eliminate parking after be present in the tension between planisher and coiling machine, prevent work
During roller lifts, strip drives working roll to be frustrated with support roller, and working roll roll surface is caused to scratch.
The present embodiment is also based on the above method and provides a kind of planisher working roll scuffing control device.
Specifically, including：
Pretension control module first establishes pretension, be delayed T1 later when machine is set up and opened according to the 40% of setting tension
It is further continued for establishing to setting tension；
Steel control module is thrown, when executing throwing steel operation, is stopped after planisher and coiling machine delay T2, straightener pinches roll-in
Under；
Coiling machine inverts control module, and after straightener pinch roller depresses to limit position, an operation is removed in execution；And the volume
Machine is taken to be inverted with crawl speed, duration T 3.
Further, the value range of T1 is 3~10s.
Further, the acquisition methods of T2 include：
According to formulaT2 is calculated；
Wherein, L is to throw distance of the strip tail end apart from straightener after steel；N is fixed value, 400~700mm of value range.
Further, the value range of T3 is 1~5s.
The specific course of work has been described above, and does not repeat herein.
Referring to Fig. 2, a specific control procedure declaration present invention will be passed through below.
It is a kind of prevent planisher working roll scratch control method include the following steps：
Step S1：Increase program and change adjusting parameter, increases pretension control, delay time after modification pretension is established
T1, this example T1 are 4s；Increasing magnetic tape trailer plate form control after throwing steel, planisher and coiling machine downtime T2 after steel are thrown in modification, this
Example T2 is 11s；Increase Minimal Tension after throwing steel to let out except control, coiling machine crawl a reversing time T3, this example T3 after modification is removed
For 3s.
Step S2：Machine, which is set up, to be opened, and the pretension of setting tension 40% is first established, delay 4s after the completion of pretension is established, after
Vertical tension is continued to setting value.
Step S3：Rolled band steel starts, and program judges whether to throw steel, continues to roll if not, if then planisher and batching
Machine delay 11s parkings, straightener pinch roller depresses to limit position automatically after parking.
Step S4：Program judges whether straightener pinch roller depresses to limit inferior position, continues to depress if not, if coiling machine
3s is inverted with crawl speed, then planisher working roll lifts.
Step S5：Manual coil terminates.
By the implementation of previous step, working roll caused by being established due to one step of hightension during machine establishment is opened is avoided
The slipping phenomenon between support roller roll surface；Change buckle-shaped shape under magnetic tape trailer and ensures that the shape that magnetic tape trailer will not be detained below passes through planisher；
It lets out in addition to the Minimal Tension being present between coiling machine and planisher ensures that strip does not occur during roll gap lifts drives work
There is a phenomenon where frustrate roller with support roller.Make working roll scratch phenomenon to be eliminated, be improved to extend the working roll military service period
Strip surface quality.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages：
The control method and device for preventing planisher working roll from scratching provided in the embodiment of the present application, by building stage by stage
, and delay rhythm is executed, avoid working roll and support roller caused by being established due to one step of hightension during machine establishment is opened
Slipping phenomenon between roll surface, so as to avoid working caused by skidding, roll surface scratches；Pass through the delay of planisher and coiling machine
Parking and pinch roller pressing operation, tail part of band steel is at straightener inlet pinch roller when planisher being made to stop, and ensures strip
Tail portion, in type is upwarped, avoids scratching caused by detaining to working roll roll surface under tail portion when passing through planisher；It is inverted by coiling machine
Operation, the Minimal Tension that will be present between planisher and coiling machine, which is let out, to be removed, and during preventing working roll from lifting, strip drives work
Roller is frustrated with support roller, and working roll roll surface is caused to scratch.
It should be noted last that the above specific implementation mode is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described the invention in detail with reference to example, it will be understood by those of ordinary skill in the art that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit of the technical scheme of the invention and range, should all cover
In the scope of the claims of the present invention.
Claims (8)
1. a kind of control method for preventing planisher working roll from scratching, which is characterized in that including：
Pretension rate-determining steps first 40% establish pretension when machine is set up according to setting tension, be delayed later T1 followed by
It continues and founds setting tension；
Magnetic tape trailer plate form control step is stopped when executing throwing steel operation after planisher and coiling machine delay T2 after throwing steel, straightener
Pinch roller is depressed；
Remaining tension is let out except step, and after straightener pinch roller depresses to limit position, an operation is removed in execution；And the coiling machine with
Crawl speed inverts, duration T 3.
2. the control method as described in claim 1 for preventing planisher working roll from scratching, it is characterised in that：The value range of T1
It is 3~10s.
3. the control method as described in claim 1 for preventing planisher working roll from scratching, which is characterized in that the acquisition methods of T2
Including：
According to formulaT2 is calculated；
Wherein, L is to throw distance of the strip tail end apart from straightener after steel；N is fixed value, 400~700mm of value range；V is machine
Group crawl speed.
4. the control method as described in claim 1 for preventing planisher working roll from scratching, it is characterised in that：The value range of T3
It is 1~5s.
5. a kind of planisher working roll scratches control device, which is characterized in that including：
Pretension control module first 40% establishes pretension when machine is set up according to setting tension, be delayed later T1 followed by
It continues and founds setting tension；
Steel control module is thrown, when executing throwing steel operation, is stopped after planisher and coiling machine delay T2, the pressure of straightener pinch roller；
Remaining tension is let out except module, and after straightener pinch roller depresses to limit position, an operation is removed in execution；And the coiling machine with
Crawl speed inverts, duration T 3.
6. planisher working roll as claimed in claim 5 scratches control device, it is characterised in that：The value range of T1 is 3~
10s。
7. planisher working roll as claimed in claim 5 scratches control device, which is characterized in that the acquisition methods of T2 include：
According to formulaT2 is calculated；
Wherein, L is to throw distance of the strip tail end apart from straightener after steel；N is fixed value, 400~700mm of value range；V is machine
Group crawl speed.
8. planisher working roll as claimed in claim 5 scratches control device, it is characterised in that：The value range of T3 is 1~
5s。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611034452.7A CN106424157B (en) | 2016-11-18 | 2016-11-18 | Control method and device for preventing leveling machine working roll from being scratched |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611034452.7A CN106424157B (en) | 2016-11-18 | 2016-11-18 | Control method and device for preventing leveling machine working roll from being scratched |
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| CN106424157A CN106424157A (en) | 2017-02-22 |
| CN106424157B true CN106424157B (en) | 2018-09-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825062A (en) * | 2017-04-25 | 2017-06-13 | 山东钢铁集团日照有限公司 | It is a kind of to prevent hot-continuous-rolling strip steel from batching the method for drawing steel |
| CN107030137A (en) * | 2017-04-25 | 2017-08-11 | 山东钢铁集团日照有限公司 | It is a kind of to keep planisher to throw the constant method of coiling tension after steel |
| CN109248926B (en) * | 2018-10-29 | 2020-05-05 | 山东钢铁集团日照有限公司 | Tension-free strip steel leveling control method for leveling machine |
| CN109702019A (en) * | 2018-12-21 | 2019-05-03 | 首钢京唐钢铁联合有限责任公司 | Method for preventing cold rolling and uncoiling difficulty of high-strength steel |
| CN111922093B (en) * | 2020-08-10 | 2022-03-29 | 山西太钢不锈钢股份有限公司 | Method for controlling scratch of ultra-pure stainless steel at finishing mill inlet |
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| JPH02179320A (en) * | 1988-12-28 | 1990-07-12 | Yaskawa Electric Mfg Co Ltd | Control system for tension leveler |
| US6857301B1 (en) * | 2002-10-16 | 2005-02-22 | Machine Concepts, Inc. | Displacement-type shape sensor for multi-roll leveler |
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| CN106424157A (en) | 2017-02-22 |
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