CN102284504B - Control method of reconstruction of lost coiling tracking of hot rolling production line - Google Patents
Control method of reconstruction of lost coiling tracking of hot rolling production line Download PDFInfo
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- CN102284504B CN102284504B CN 201110231561 CN201110231561A CN102284504B CN 102284504 B CN102284504 B CN 102284504B CN 201110231561 CN201110231561 CN 201110231561 CN 201110231561 A CN201110231561 A CN 201110231561A CN 102284504 B CN102284504 B CN 102284504B
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Abstract
The invention relates to a control method for preventing lost coiling tracking from causing steel scraps in a hot continuous rolling strip steel production line. The technical scheme comprises the following steps of: A, determining lost tracking of finish-rolling and coiling rolling strip steel; B, ensuring normal speed acceleration of a coiling block and a wrapper roller and steel coiling preparation by a coiler by using a rolling signal of a tracking-free rolling mill as a trigger signal of speed acceleration of a coiler mandrel and the wrapper roller; C, determining whether the strip steel reaches the coiler, when the strip steel reaches the coiler, starting a coiling tracking reconstructing system, and providing normal head and tail tracking signals for each control system of the coiler; and D, determining head and tail positions of the strip steel by integration on the strip steel speed. The invention has the advantages that the lost tracking can be automatically distinguished by a computer system and software thereof, the tracking reconstructing system is automatically started, an accurate tracking signal is provided for the coiler, normal steel coiling of the coiler is realized, and the steel scraps are avoided being coiled to influence normal production. The method has the characteristics of scientificity, applicability and accuracy.
Description
Technical field
The present invention relates to the hot-continuous-rolling strip steel production line and prevent from batching the control method that the tracking loss causes steel scrap, belong to technical field of steel rolling.
Background technology
In the hot rolling production process of Siemens Control, because the band steel skids when nipping finishing mill or the secondary machine calculates roll-force and causes finish rolling and batch the tracking loss with actual rolling force deviation is excessive, in the case because finishing mill has been put the position, the band steel can pass through finishing mill, but coiling machine is because can not receive head tracking signal and finishing mill load signal, and reel and help the winding up roller coiling machine that do not raise speed not do coil and prepare causes and batches steel scrap, affect product percent of pass, impact is with the normal production of steel.
Summary of the invention
The control method that the purpose of this invention is to provide a kind of reconstruction of lost coiling tracking of hot rolling production line is by starting winding unit, afterbody tracking reconstructing system; Coiling machine completed normally decide tail, unloaded and lick journey.Solve the problems referred to above that background technology exists.
Technical scheme of the present invention is: the control method of reconstruction of lost coiling tracking of hot rolling production line comprises following steps: A. determines that finish rolling is just batched at rolling strip tracking and loses;
B. with not with the mill milling signal of tracking as coiler mandrel with help the triggering signal of winding up roller speed-raising, guarantee reel and help winding up roller normally to raise speed, coiling machine is carried out coil and is prepared;
C. determine that the band steel has arrived coiling machine, when the band steel arrives coiling machine, start and batch the tracking reconstructing system, for each control system of coiling machine provides normal head and afterbody tracking signal;
D. by strip speed is carried out integration, determine band steel head, tail position.
Determine to be expressed as with the relational expression of steel head, tail position: S=∫ Vdt, in formula: S is displacement, and V is speed, and t is the time.
The present invention is not destroying on original tracing process basis, follows the tracks of when losing when batching, and offers the normal tracking signal of each control system of coiling machine with the tracking of batching reconstruction.By to the strip speed integration, to the end, the afterbody tracking signal, then start winding unit, afterbody is followed the tracks of reconstructing system, coiling machine completed normally decide tail, unloaded and lick journey.
Good effect of the present invention is: when finish rolling is batched just when rolling strip tracking is lost, do not destroying on original tracing process basis, followed the tracks of by computer system and software automatic identification thereof and lose, automatically start and follow the tracks of reconstructing system, for coiling machine provides tracking signal accurately, realize the normal coil of coiling machine, avoid causing and batch steel scrap, impact is normal produces, and improves the qualification rate of product.The method has the characteristics of science, applicability, accuracy.
Description of drawings
Fig. 1 is that coiling machine is followed the tracks of loss reconstructing system process flow diagram flow chart.
The specific embodiment
The present invention will be further described below by embodiment.
The control method of reconstruction of lost coiling tracking of hot rolling production line, be not destroy on original tracing process basis, followed the tracks of by computer system and software automatic identification thereof and lose, automatically start and follow the tracks of reconstructing system, for coiling machine provides tracking signal accurately, realize the method for the normal coil of coiling machine.Its control method is sequentially:
A. definite finish rolling is just batched and is lost at rolling strip tracking;
B. with not with the mill milling signal of tracking as coiler mandrel with help the triggering signal of winding up roller speed-raising, guarantee reel and help winding up roller normally to raise speed;
C. determine that the band steel has arrived coiling machine, when the band steel arrives coiling machine, start and batch the tracking reconstructing system, for each control system of coiling machine provides normal head and afterbody tracking signal;
D. tracing positional determines
Displacement and length velocity relation formula are expressed as:
S=∫Vdt
In formula: S is that displacement V is that speed t is the time
By strip speed is carried out integration, determine band steel head, tail position.
Described steps A is further comprising the steps:
A1. determine that finishing mill is just in steel rolling;
A2. determine to follow the tracks of this moment not operation.
Described step B is further comprising the steps:
B1. with not with the mill milling signal of tracking as coiler mandrel with help the triggering signal of winding up roller speed-raising, guarantee reel and help winding up roller normally to raise speed;
B2. with not with the mill milling signal of the tracking triggering signal as coiling machine READY, guarantee that coiling machine carries out coil and prepare.
Described step C is further comprising the steps:
C1. determine rolled band steel tracking loss by the result of steps A;
C2. determine that by the result of step B coiling machine carries out coil and prepare;
C3. determine that the band steel has arrived the front HMD of coiling machine No. 1;
C4. batch the head tracking reconstructing system by the result startup of C1, C2 and C3, make coiling machine complete normal threading loading procedure, guarantee that in the coil process, each systems such as coil diameter, tension force, speed, roll gap control are accurate;
C5. determine that the band steel has left the front HMD of coiling machine No. 1;
C6. started by the result of C1 and C5 and batch afterbody and follow the tracks of reconstructing system, coiling machine completed normally decide tail, unloaded and lick journey.
Described step D is further comprising the steps:
D1. determine that the band steel head has arrived coiling machine No. 1, from then on the position begins the strip speed integration is obtained head tracking signal;
D2. determine that band steel afterbody has arrived coiling machine No. 1, from then on the position begins the strip speed integration is obtained the afterbody tracking signal.
Claims (2)
1. the control method of a reconstruction of lost coiling tracking of hot rolling production line is characterized in that comprising following steps:
A. definite finish rolling is just batched and is lost at rolling strip tracking;
A1. determine that finishing mill is just in steel rolling;
A2. determine to follow the tracks of this moment not operation;
Definite finish rolling is just batched and is lost at rolling strip tracking;
B. with not with the mill milling signal of tracking as coiler mandrel with help the triggering signal of winding up roller speed-raising, guarantee reel and help winding up roller normally to raise speed, coiling machine is carried out coil and is prepared;
B1. with not with the mill milling signal of tracking as coiler mandrel with help the triggering signal of winding up roller speed-raising, guarantee reel and help winding up roller normally to raise speed;
B2. with not with the mill milling signal of the tracking triggering signal as coiling machine, guarantee that coiling machine carries out coil and prepare;
C. determine that the band steel has arrived coiling machine, when the band steel arrives coiling machine, start and batch the tracking reconstructing system, for each control system of coiling machine provides normal head and afterbody tracking signal;
D. by strip speed is carried out integration, determine band steel head, tail position; Determine to be expressed as with the relational expression of steel head, tail position: S=∫ Vdt, in formula: S is displacement, and V is speed, and t is the time;
D1. determine that the band steel head has arrived coiling machine, from then on the position begins the strip speed integration is obtained head tracking signal;
D2. determine that band steel afterbody has arrived coiling machine, from then on the position begins the strip speed integration is obtained the afterbody tracking signal;
Determine band steel head, afterbody tracking signal, complete reconstruction of lost coiling tracking of hot rolling production line.
2. according to claim 1 the control method of reconstruction of lost coiling tracking of hot rolling production line is characterized in that:
Before determining that the band steel head has arrived coiling machine; Start the tracking reconstructing system and batch head, make coiling machine complete normal threading loading procedure, guarantee that in the coil process, each systems such as coil diameter, tension force, speed, roll gap control are accurate;
Before determining that band steel afterbody has left coiling machine; Start to follow the tracks of reconstructing system and batch afterbody, coiling machine completed normally decide tail, unloaded and lick journey.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102553939B (en) * | 2011-12-30 | 2013-12-25 | 中冶南方（武汉）自动化有限公司 | Method for recovering continuously treated line strip steel tracking system to normal mode |
| CN102553958B (en) * | 2011-12-30 | 2014-06-18 | 中冶南方（武汉）自动化有限公司 | Tracking recovery device for strip steel tracking system of continuous processing line to normal mode |
| CN104785532B (en) * | 2015-04-01 | 2016-10-05 | 山东钢铁股份有限公司 | A kind of threading control method and device |
| CN108906892B (en) * | 2018-06-06 | 2019-11-08 | 北京科技大学设计研究院有限公司 | A kind of reversible roughing mill rolled piece tail portion tracking based on self study |
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| CN201862657U (en) * | 2010-11-24 | 2011-06-15 | 武汉钢铁(集团)公司 | Coiling laser tracking system |
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| JPH09122719A (en) * | 1995-10-31 | 1997-05-13 | Nisshin Steel Co Ltd | Method for tracking tail end of strip |
| KR100314840B1 (en) * | 1997-06-17 | 2002-02-28 | 이구택 | Automatic stop control method of tail end of strip of hot coiler |
| JP4050897B2 (en) * | 2001-12-17 | 2008-02-20 | 新日本製鐵株式会社 | Steel material tracking method and apparatus in continuous rolling |
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| CN101722196A (en) * | 2009-11-10 | 2010-06-09 | 武汉钢铁(集团)公司 | Method for calculating and locating strip steel head of automatic stepping system of hot continuous rolling coiling machine |
| CN201862657U (en) * | 2010-11-24 | 2011-06-15 | 武汉钢铁(集团)公司 | Coiling laser tracking system |
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| 何茂松等.跟踪技术在热轧卷取机控制中的应用.《钢铁技术》.2010,(第2期), |
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