CN111014308B - Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line - Google Patents
Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line Download PDFInfo
- Publication number
- CN111014308B CN111014308B CN201911253624.3A CN201911253624A CN111014308B CN 111014308 B CN111014308 B CN 111014308B CN 201911253624 A CN201911253624 A CN 201911253624A CN 111014308 B CN111014308 B CN 111014308B
- Authority
- CN
- China
- Prior art keywords
- head
- permit
- deviation
- blank
- alarm
- 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
Images
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
- B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention provides an early warning method for head deviation of a rough rolling intermediate billet in a furnace coil rolling line, and belongs to the technical field of automatic control of metallurgy. According to the method, the average value D of the central line deviation D of the intermediate billet within Nmm after the head of the intermediate billet is removed and the shearing length set by a flying shear head is Mmm is calculated according to the central line deviation and the width deviation of the billet measured by a rough rolling outlet width gauge in the last passavgAnd the distances S between the operating side and the transmission side of the rolling mill and the corresponding side of the slot of the coiling furnaceosAnd SdsMean value of SosavgAnd SdsavgComparison of DavgAnd DpermitPopping the center line of the head of the intermediate blank on the HMI and deviating the operation side to be larger than DpermitAlarm or the offset transmission side of the center line of the head of the intermediate billet is larger than DpermitAlarm, compare SosavgAnd SpermitThe distance between the operating side edge part of the head part of the ejected blank and the edge part of the notch is less than SpermitThe distance between the transmission side edge part of the blank head and the notch edge part is less than SpermitTo alarm. The method can effectively prevent the steekle mill from scrap steel caused by the head of the intermediate billet running over.
Description
Technical Field
The invention relates to the technical field of metallurgy automatic control, in particular to a method for early warning head deviation of a rough rolling intermediate billet in a furnace coil rolling line.
Background
The deviation of the rough rolling intermediate billet is a problem existing in hot continuous rolling production, and particularly under the condition that a coil is put into a coil rolling line, if the head of the intermediate billet is seriously deviated, the head of the intermediate billet cannot enter a notch of a coiling furnace, so that waste steel is caused, and how to timely give early warning information after the deviation of the intermediate billet is found so as to take effective measures to avoid the situation that the waste steel of the coil rolling machine is a problem to be solved in the coil rolling line.
Disclosure of Invention
The invention aims to provide a method for early warning the head deviation of a rough rolling intermediate billet in a coil rolling line.
According to the method, Nmm is calculated after the flying shear head of the intermediate billet head is removed to set the shearing length Mmm according to the deviation of the center line and the width of the billet measured by a rough rolling outlet width gauge in the last passMean value D of central line deviation D of inner intermediate blankavgAnd the distances S between the operating side and the transmission side of the rolling mill and the corresponding side of the slot of the coiling furnaceosAnd SdsMean value of SosavgAnd Sdsavg(ii) a When D is presentavg>DpermitWhen the center line of the head of the intermediate blank is popped out from the HMI, the deviation operation side is larger than DpermitAlarm, when Davg<-DpermitWhen the center line of the head of the intermediate blank is popped out from the HMI, the eccentric transmission side is larger than DpermitAlarming; when S isosavg<SpermitWhen the operating side edge of the blank head is ejected from the HMI machine to be less than S from the notch edgepermitWhen S is an alarmdsavg<SpermitWhen the distance between the transmission side edge of the head part of the HMI popping blank and the edge of the notch is smaller than SpermitTo alarm.
The flying shear head set shear length Mmm is specifically determined according to actual conditions.
The value of N is 500-1000.
DpermitThe central line deviation allowable value is determined according to the actual situation.
SpermitAnd determining the minimum allowable value of the edge of the plate blank from the edge of the notch according to the actual condition.
The technical scheme of the invention has the following beneficial effects:
in the scheme, the center line deviation of the head of the rough rolling intermediate billet and the distance between the edge and the notch of the coiling furnace of the steckel mill are calculated according to the center line deviation and the width deviation measured by the width gauge after the rough rolling mill, and alarm information is given when the center line deviation is larger than an allowable range or the distance between the edge of the intermediate billet and the notch edge is smaller than the allowable range, so that the steel scrap of the steckel mill caused by the head of the intermediate billet running over can be effectively prevented.
Drawings
FIG. 1 is a schematic diagram of relevant variables of the early warning method for head deviation of a rough rolling intermediate billet in a coil rolling line.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a method for early warning head deviation of a rough rolling intermediate billet in a furnace coil rolling line.
According to the method, the average value D of the central line deviation D of the intermediate billet within Nmm after the head of the intermediate billet is removed and the shearing length set by a flying shear head is Mmm is calculated according to the central line deviation and the width deviation of the billet measured by a rough rolling outlet width gauge in the last passavgAnd the distances S between the operating side and the transmission side of the rolling mill and the corresponding side of the slot of the coiling furnaceosAnd SdsMean value of SosavgAnd Sdsavg(ii) a When D is presentavg>DpermitWhen the center line of the head of the intermediate blank is popped out from the HMI, the deviation operation side is larger than DpermitAlarm, when Davg<-DpermitWhen the center line of the head of the intermediate blank is popped out from the HMI, the eccentric transmission side is larger than DpermitAlarming; when S isosavg<SpermitWhen the operating side edge of the blank head is ejected from the HMI machine to be less than S from the notch edgepermitWhen S is an alarmdsavg<SpermitWhen the distance between the transmission side edge of the head part of the HMI popping blank and the edge of the notch is smaller than SpermitTo alarm.
As shown in figure 1, in practical application, according to the field requirement, the set shearing length Mmm of the head of the flying shear is determined, then N is taken as 700, and the mean value D of the central line deviation D of the intermediate billet within 700mm is calculatedavgAnd the distances S between the operating side and the transmission side of the rolling mill and the corresponding side of the slot of the coiling furnaceosAnd SdsMean value of SosavgAnd SdsavgOn-site design DpermitAs a center line deviation allowable value, SpermitMinimum allowable value of edge of the slab from edge of the notch when Davg>DpermitWhen the center line of the head of the intermediate blank is popped out from the HMI, the deviation operation side is larger than DpermitAlarm, when Davg<-DpermitWhen the center line of the head of the intermediate blank is popped out from the HMI, the eccentric transmission side is larger than DpermitAlarm, when Sosavg<SpermitWhen the side edge part of the operation side edge part of the head part of the ejected blank is less than S from the side edge part of the notchpermitWhen S is an alarmdsavg<SpermitWhen the distance between the transmission side edge part of the head part of the ejected blank and the edge part of the notch is less than SpermitTo alarm.
The method is successfully applied to the early warning of the deviation of the rough rolling intermediate blank in a plurality of furnace coil rolling lines and is favored by users.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (2)
1. The early warning method for the head deviation of the rough rolling intermediate billet in the furnace coil rolling line is characterized by comprising the following steps of: according to the blank central line deviation and the width deviation measured by the rough rolling outlet width gauge in the last pass, calculating the average value D of the central line deviation D of the intermediate blank within Nmm after the head of the intermediate blank is removed and the shearing length set by the head of the flying shear is MmmavgAnd the distances S between the operating side and the transmission side of the rolling mill and the corresponding side of the slot of the coiling furnaceosAnd SdsMean value of SosavgAnd Sdsavg(ii) a When D is presentavg>DpermitWhen the center line of the head of the intermediate blank is popped out from the HMI, the deviation operation side is larger than DpermitAlarm, when Davg<-DpermitWhen the center line of the head of the intermediate blank is popped out from the HMI, the eccentric transmission side is larger than DpermitAlarming; when S isosavg<SpermitWhen the operating side edge of the blank head is ejected from the HMI machine to be less than S from the notch edgepermitWhen S is an alarmdsavg<SpermitWhen the distance between the transmission side edge of the head part of the HMI popping blank and the edge of the notch is smaller than SpermitThe alarm of (1);
the value of N is 500-1000;
said DpermitThe central line deviation allowable value is determined according to the actual condition;
said SpermitAnd determining the minimum allowable value of the edge of the plate blank from the edge of the notch according to the actual condition.
2. The early warning method for the head deviation of the rough rolling intermediate billet in the furnace coil rolling line according to claim 1, which is characterized in that: the set flying shear head shear length Mmm is specifically determined based on the actual situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911253624.3A CN111014308B (en) | 2019-12-09 | 2019-12-09 | Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911253624.3A CN111014308B (en) | 2019-12-09 | 2019-12-09 | Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111014308A CN111014308A (en) | 2020-04-17 |
| CN111014308B true CN111014308B (en) | 2021-08-03 |
Family
ID=70205153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911253624.3A Active CN111014308B (en) | 2019-12-09 | 2019-12-09 | Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111014308B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111468541B (en) * | 2020-04-30 | 2021-10-01 | 河南中孚高精铝材有限公司 | Novel belt threading deviation mathematical model control method for 1+4 aluminothermic continuous rolling edge trimmer |
| CN112872043B (en) * | 2021-01-08 | 2022-04-22 | 北京科技大学设计研究院有限公司 | Control method for preventing head of rolled piece from deviating in hot rolling process of single stand |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61259816A (en) * | 1985-05-13 | 1986-11-18 | Nippon Steel Corp | Meandering motion control method for strip rolling |
| JPS61276711A (en) * | 1985-05-31 | 1986-12-06 | Nippon Steel Corp | Method for controlling camber in thick plate rolling |
| JPS62197209A (en) * | 1986-02-25 | 1987-08-31 | Kobe Steel Ltd | Camber controlling method for hot rolling of metal plate |
| CN102641903A (en) * | 2011-02-16 | 2012-08-22 | 宝山钢铁股份有限公司 | Steckel mill rolled piece head-and-tail deviation control method |
| CN102773265A (en) * | 2012-07-10 | 2012-11-14 | 首钢总公司 | System for controlling deviation of strip steel |
| CN104275352A (en) * | 2014-09-22 | 2015-01-14 | 宁波宝新不锈钢有限公司 | Cold stripe mill deviation and shape automatic control method |
| CN205551083U (en) * | 2015-12-31 | 2016-09-07 | 中铝西南铝板带有限公司 | Hot rolling aluminium strip material off tracking detection alarm device |
| CN106475424A (en) * | 2015-08-25 | 2017-03-08 | 宝山钢铁股份有限公司 | A kind of control method of Hot Rolling Strip sideslip |
| CN106513446A (en) * | 2016-10-14 | 2017-03-22 | 武汉钢铁股份有限公司 | Strip steel deflection alarm device |
| CN106984652A (en) * | 2016-01-21 | 2017-07-28 | 宝山钢铁股份有限公司 | The method that finishing stand sideslip is controlled according to breakdown bar camber |
| CN107470372A (en) * | 2017-09-05 | 2017-12-15 | 北京首钢冷轧薄板有限公司 | A kind of method, apparatus and electronic equipment for being used to control rolled piece sideslip |
| CN108655203A (en) * | 2017-03-31 | 2018-10-16 | 宝山钢铁股份有限公司 | The quick identification of hot-continuous-rolling strip steel camber defect and monitoring method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162549B (en) * | 2014-06-16 | 2016-08-24 | 北京首钢股份有限公司 | The autocontrol method of rougher of hot strip mill machine breakdown bar camber and system |
| CN105234189A (en) * | 2015-11-13 | 2016-01-13 | 北京首钢自动化信息技术有限公司 | Slab sickle bending control system and method used for roughing mill |
| CN109622632B (en) * | 2018-12-18 | 2020-06-26 | 北京科技大学 | Camber control method for hot-rolled intermediate billet |
-
2019
- 2019-12-09 CN CN201911253624.3A patent/CN111014308B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61259816A (en) * | 1985-05-13 | 1986-11-18 | Nippon Steel Corp | Meandering motion control method for strip rolling |
| JPS61276711A (en) * | 1985-05-31 | 1986-12-06 | Nippon Steel Corp | Method for controlling camber in thick plate rolling |
| JPS62197209A (en) * | 1986-02-25 | 1987-08-31 | Kobe Steel Ltd | Camber controlling method for hot rolling of metal plate |
| CN102641903A (en) * | 2011-02-16 | 2012-08-22 | 宝山钢铁股份有限公司 | Steckel mill rolled piece head-and-tail deviation control method |
| CN102773265A (en) * | 2012-07-10 | 2012-11-14 | 首钢总公司 | System for controlling deviation of strip steel |
| CN104275352A (en) * | 2014-09-22 | 2015-01-14 | 宁波宝新不锈钢有限公司 | Cold stripe mill deviation and shape automatic control method |
| CN106475424A (en) * | 2015-08-25 | 2017-03-08 | 宝山钢铁股份有限公司 | A kind of control method of Hot Rolling Strip sideslip |
| CN205551083U (en) * | 2015-12-31 | 2016-09-07 | 中铝西南铝板带有限公司 | Hot rolling aluminium strip material off tracking detection alarm device |
| CN106984652A (en) * | 2016-01-21 | 2017-07-28 | 宝山钢铁股份有限公司 | The method that finishing stand sideslip is controlled according to breakdown bar camber |
| CN106513446A (en) * | 2016-10-14 | 2017-03-22 | 武汉钢铁股份有限公司 | Strip steel deflection alarm device |
| CN108655203A (en) * | 2017-03-31 | 2018-10-16 | 宝山钢铁股份有限公司 | The quick identification of hot-continuous-rolling strip steel camber defect and monitoring method |
| CN107470372A (en) * | 2017-09-05 | 2017-12-15 | 北京首钢冷轧薄板有限公司 | A kind of method, apparatus and electronic equipment for being used to control rolled piece sideslip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111014308A (en) | 2020-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111014308B (en) | Early warning method for head deviation of rough rolling intermediate blank in furnace coil rolling line | |
| CN102591286A (en) | Online rolling plan dynamic pre-analysis and self-adjustment system and method | |
| CN104772340B (en) | Warning control method for abnormal fluctuations of incoming hot rolled slab convexity and wedge shape | |
| CN108838213B (en) | Roughing vertical roll idle-passing method | |
| CN110270591A (en) | pipeline steel coiling control method | |
| CN105195807A (en) | Shearing method of flying shears | |
| CN109590337B (en) | Control system and method for preventing steel scrap | |
| CN110102579B (en) | Low-cost control method for eliminating width of slab wedge | |
| CN114453426B (en) | Method for adjusting rough rolling center line | |
| CN110586647A (en) | Non-intermittent rolling method for rough rolling R1 rolling mill | |
| CN103878174A (en) | Rolling method for expanding capacity of coiling machine and eliminating impressions of heads of coiled materials | |
| CN114535324A (en) | Method for reducing rolling clearance of finish rolling inlet | |
| CN113732075A (en) | Slab width measuring and shunting method | |
| CN106540970A (en) | Automatic length monitoring and color difference alarming method for hot-rolled intermediate billet | |
| CN115740020B (en) | Method for avoiding rough rolling side bending collision guide rule accident | |
| CN108787761B (en) | Method for preventing strip drawing of continuous rolling mill | |
| CN117299801B (en) | Automatic control method for hot continuous rolling mill fly shearing tail coupling, storage medium and electronic device | |
| CN103817157A (en) | Variable acceleration rolling control system and variable acceleration rolling control method of rough rolling unit | |
| CN106807762B (en) | Pass through the method for the deviation rectification roller stroke pre-control cold continuous rolling mode of production | |
| CN114273427B (en) | Disc shear blocking edge fault risk identification method | |
| CN111992588B (en) | Method for controlling cold-rise of sleeve of strip steel layer | |
| CN104607465B (en) | The sour roll process of steel for a kind of 300 μ m and following thin specification household electrical appliances | |
| CN103722025A (en) | Rapid early warning method for fluctuation of tension in furnace in cold rolling production line | |
| CN208527698U (en) | Roll | |
| CN111906145B (en) | Cold rolling production line circle shear edge blocking risk identification method and system |
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 |