CN104759488B - Method for realizing sectional control during steel passing process of hot-rolled strip steel coiling side guide plate - Google Patents

Method for realizing sectional control during steel passing process of hot-rolled strip steel coiling side guide plate Download PDF

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Publication number
CN104759488B
CN104759488B CN201510155314.3A CN201510155314A CN104759488B CN 104759488 B CN104759488 B CN 104759488B CN 201510155314 A CN201510155314 A CN 201510155314A CN 104759488 B CN104759488 B CN 104759488B
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control
strip steel
side guide
steel
head
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CN104759488A (en
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张洋
孙正旭
黄公娟
刘继梅
武文建
王好东
宋凯
张丽
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Shandong Iron and Steel Group Co Ltd SISG
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Shandong Iron and Steel Group Co Ltd SISG
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Abstract

The invention discloses a method for realizing sectional control during steel passing process of a hot-rolled strip steel coiling side guide plate. The method comprises the following steps: (1) detection of the head of strip steel, namely, with a hot metal detector and a drum load relay, judging whether the actual position of the head of the strip steel is in a coiler, completing the short distance control of the head of the side guide plate and bringing pressure closed loop control into operation; (2) sectional control of the coiling side guide plate, namely, after the hot metal detector and the drum load relay confirm that the head of the strip steel enters the coiler, switching the pressure closed loop control of the side guide plate to sectional position control or sectional pressure control according to the thickness of the strip steel from the moment that the head of the strip enters the coiler to the moment that the tail of the strip steel is about to pass through a finish rolling section; and (3) detection of the tail of the strip steel, namely judging whether the tail of the strip steel passes through a finish roller through a finish rolling pressure-magnet instrument, determining whether the coiling side guide plate exits section control and recovering the pressure closed loop control.

Description

A kind of hot-strip of realizing batches the method that flipper guide crosses Discrete control during steel
Technical field
The present invention relates to coiling machine batches technical field, more particularly, to one kind is realized hot-strip and batches flipper guide crossing steel mistake The method of Discrete control in journey.
Background technology
Hot-strip batches flipper guide and controls for automatic segmentation during crossing steel, and the main strip steel head position that includes is examined Survey, cross steel during control execution, tail part of band steel detection and End-Management execution, traditional plate rolling side guide cross steel control is Control to realize by the detection of strip steel head position and whole pressure closed loop, under this control mode, flipper guide usage cycles are relatively Short, replacement frequency is frequent, spare parts consumption is too fast, the easy steel edge portion scuffing occurring because flipper guide abrasion causes, scratch, scraping etc. Quality problems, the solution of this problem can only be changed flipper guide by stopping and realize.
Content of the invention
It is an object of the invention to, provide a kind of hot-strip of realizing to batch the side that flipper guide crosses Discrete control during steel Method, this method saves equipment investment, flipper guide abrasion and parts replacement is greatly lowered again, reduces steel edge portion quality problems Produce, reduce labor intensity.
For reaching above-mentioned purpose, the present invention is achieved through the following technical solutions its purpose:
A kind of hot-strip of realizing batches the method that flipper guide crosses Discrete control during steel, and methods described includes following step Suddenly:
1) strip steel head detection:Judge the physical location of strip steel head using thermometal detector and reel load relay Whether enter in coiling machine and complete flipper guide head short stroke control and put into pressure closed loop function;
2) plate rolling side guide Discrete control:Strip steel head must be confirmed in thermometal detector and examining of reel load relay After entering coiling machine, after strip steel head enters coiling machine to tail part of band steel will by finish rolling interval in, according to incoming band steel Thickness, flipper guide is controlled by pressure closed loop and switches to execution segmentation position control or segmentation Stress control;
3) tail part of band steel detection:Press magnetic instrument to judge whether tail part of band steel passes through finishing mill by finish rolling, determine that batching side leads Whether plate exits sectional control function, recovers pressure closed loop and controls.
Preferably, described step 2) in, during the thickness < 5mm of strip steel, flipper guide executes segmentation Stress control.
It is further preferred that described segmentation Stress control is specially:Pressure makes plate rolling side guide lean against strip steel for 2-5KN On.
Preferably, described step 2) in, during the thickness >=5mm of strip steel, flipper guide executes segmentation position control.
It is further preferred that described segmentation position is controlled to:Flipper guide is opened to the opening of strip width+compensation 10mm Degree.
Preferably, described step 2) in, during plate rolling side guide Discrete control, plate rolling side guide open or close according to To complete by hydraulic cylinder and pinion and rack.
Preferably, described step 2) in, by CFC, (CFC full name is Continuous Function Chart Chinese meaning Think of is continuous control figure, and significance of which is the editing machine based on graphic user interface, and it passes through to specify to the block editting in advance Parameter or set up connects, thus realizing creating CPU program structure) in selection block judging supplied materials thickness, by WINCC (WINCC full name Windows Control Center) Chinese meaning is form control centre, is the people of Siemens control system Machine interface assembly) in setting stepwise realizing plate rolling side guide Discrete control.
The present invention, in specific implementation process, by flipper guide Discrete control setting module, realizes flipper guide and crosses steel process The function of middle Discrete control;Again supplied materials thickness is judged by the selection block in CFC, segmentation pressure control can be executed compared with thin gauge strip System, thicker belts steel can execute segmentation position control;Band coil of strip complete rear side guide plate can return to original state.
The present invention overcomes the impact to steel edge portion for the flipper guide abrasion, can effectively reduce side and lead on the basis of ensureing scroll Plate abrasion, raising flipper guide service life, thus reduce steel edge portion scuffing, the generation of scratch and worker's labor intensity.
It is an advantage of the current invention that:The present invention, on the basis of keeping batching original hardware configuration, need not add new detection Element, issues belt steel thickness by two grades and judges execution segmentation position control or the pressure controlled condition of segmentation, by existing heat The pressure magnetic instrument signal of metal detector, reel load relay and finish rolling multi-section milling train judges strip steel physical location, and execute and Exit flipper guide sectional control function.The present invention haul oneself willingly into since, stable smooth operation, safe and reliable it is achieved that plate rolling side guide mistake The function of Discrete control during steel.
Brief description
Fig. 1 is the flow chart of the method for the present invention.
Specific embodiment
With reference to the operation principle of the present invention, accompanying drawing and embodiment, the present invention is described in more detail, makes this Bright technical characterstic is clearer, but the invention is not restricted to these descriptions.
Embodiment 1
In the present embodiment, strip steel supplied materials width 1250mm, thickness is 3.0mm (thickness<5.0mm), the pressure that one-level sets For 11.2KN, pressure compensation -4KN.
First, set the selection block of supplied materials thickness in CFC, when supplied materials thickness is less than 5.0mm, flipper guide execution point Section Stress control.After strip steel head enters coiling machine and a process built by reel, thermometal detector now and reel Load relay all detects strip steel, and flipper guide no longer executes the pressure closed loop control setting pressure (11.2-4) KN and executes Pressure after having " flipper guide Discrete control " to put in WINCC sets, and when setting value is 1KN, flipper guide now can execute and set The segmentation Stress control of constant-pressure 1KN, when tail part of band steel is after finishing mill, flipper guide pressure sets and exits " flipper guide segmentation The pressure of the 1KN after control " input sets, and continues executing with the pressure closed loop control that first class pressure sets (11.2-4) KN.This Segmentation Stress control can be hence it is evident that reducing the abrasion of flipper guide edge and extending flipper guide replacing on the basis of ensureing strip steel scroll Cycle (existing method needs to change three flipper guides for one day, only needs one day after to change a flipper guide using the present processes), Quality of edges can be effectively ensured.
Embodiment 2
Strip steel supplied materials width 1250mm in the present embodiment 3, thickness is 7.75mm (thickness >=5.0mm), the pressure that one-level sets Power is 18.4KN, pressure compensation -5KN
First, set the selection block of supplied materials thickness in CFC, when supplied materials thickness is more than or equal to 5.0mm, flipper guide is held Row segmentation position control.After strip steel head enters coiling machine and a process built by reel, thermometal detector now and Reel load relay all detects strip steel, and flipper guide no longer executes the pressure closed loop control setting pressure (18.4-5) KN and holds Segmentation position control after having " flipper guide Discrete control " to put in row WINCC.WINCC sets position compensation as 10mm, that is, after thermometal detector and reel load relay all detect strip steel, flipper guide can exit first class pressure and set (18.4-5) KN pressure closed loop control, select execution segmentation position control (i.e. flipper guide is opened to supplied materials width 1250mm+ Compensate the opening degree of 10mm), now flipper guide does not lean on strip steel, can effectively reduce flipper guide edge mill on the basis of ensureing scroll Damage (existing method needs to change within one day three flipper guides, only needs one day after to change a flipper guide) using the present processes, more The cycle of changing can be obviously prolonged, and quality of edges can be effectively ensured.
Comparative example 1
This comparative example 1 does not execute " flipper guide Discrete control " function.In this comparative example, strip steel supplied materials width 1250mm is thick Spend for 3.0mm, the pressure that one-level sets is as 11.2KN, pressure compensation -4KN.
After strip steel head enters coiling machine and a process built by reel, thermometal detector now and reel load Relay all detects strip steel, and flipper guide can put into pressure closed loop until tail part of band steel enters in coiling machine, side during this Guide plate can be pressed against steel edge portion all the time, and to execute pressure closed loop by setting pressure (11.2-4) KN, although in this case Strip steel scroll can be effectively ensured, but has that flipper guide abrasion is very fast, the replacement cycle is shorter, spare parts consumption is too fast simultaneously The strip quality problems such as edge scuffing, scratch, scraping press-in easily occur.In the real work of this comparative example, need change within one day Three flipper guides.
The merely exemplary example of the present invention has gone out the function that side plate rolling side guide crosses Discrete control during steel, to opposite side Flipper guide control equally applicable.
It should be noted last that, above example is only in order to illustrate technical scheme and unrestricted.Although ginseng According to embodiment, the present invention is described in detail, it will be apparent to an ordinarily skilled person in the art that the technical side to the present invention Case is modified or equivalent, and without departure from the spirit and scope of technical solution of the present invention, it all should be covered in the present invention Right in the middle of.

Claims (5)

1. a kind of hot-strip of realizing batches the method that flipper guide crosses Discrete control during steel, and methods described includes following step Suddenly:
1) strip steel head detection:Whether the physical location judging strip steel head using thermometal detector and reel load relay Enter in coiling machine and complete flipper guide head short stroke control and put into pressure closed loop function;
2) plate rolling side guide Discrete control:Must confirm that strip steel head enters in thermometal detector and examining of reel load relay After coiling machine, strip steel head enter coiling machine to tail part of band steel will by finish rolling interval in, according to the thickness of incoming band steel, Flipper guide is controlled by pressure closed loop and switches to execution segmentation position control or segmentation Stress control;
3) tail part of band steel detection:Press magnetic instrument to judge whether tail part of band steel passes through finishing mill by finish rolling, determine that plate rolling side guide is No exit sectional control function, recover pressure closed loop and control;
Described step 2) in, during the thickness < 5mm of strip steel, flipper guide executes segmentation Stress control;
Described step 2) in, during the thickness >=5mm of strip steel, flipper guide executes segmentation position control.
2. method according to claim 1 is it is characterised in that described segmentation Stress control is specially:Pressure makes for 2-5KN Plate rolling side guide leans against on strip steel.
3. method according to claim 1 is it is characterised in that described segmentation position is controlled to:Flipper guide is opened to strip steel The opening degree of width+compensation 10mm.
4. method according to claim 1 is it is characterised in that described step 2) in, plate rolling side guide Discrete control process In, opening or closing of plate rolling side guide relies on hydraulic cylinder and pinion and rack to complete.
5. method according to claim 1 is it is characterised in that described step 2) in, judged by the selection block in CFC The thickness of incoming band steel, realizes plate rolling side guide Discrete control by the setting stepwise in WINCC.
CN201510155314.3A 2015-04-02 2015-04-02 Method for realizing sectional control during steel passing process of hot-rolled strip steel coiling side guide plate Active CN104759488B (en)

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CN105080967B (en) * 2015-09-29 2017-01-18 山东钢铁股份有限公司 Secondary rolling method of broken belt roll of single-rack reversible cold rolling mill
CN106807761B (en) * 2015-11-30 2019-06-25 宝山钢铁股份有限公司 A kind of novel plate rolling side guide control method of hot-strip
CN107597880A (en) * 2017-09-15 2018-01-19 首钢京唐钢铁联合有限责任公司 A kind of side guide plate of recoiling machine control method for reducing wearing plate abrasion
CN108372205B (en) * 2018-02-27 2019-12-03 山东钢铁股份有限公司 A kind of hot-strip reels pinch roller crosses Discrete control method during steel
CN108435824A (en) * 2018-03-16 2018-08-24 山东鲁冶瑞宝电气自动化有限公司 A kind of compress control method of side guide plate of recoiling machine
CN108714629B (en) * 2018-06-13 2020-04-21 武汉钢铁有限公司 Comprehensive control method for pressure position of hot continuous rolling coiling side guide plate
CN111570529B (en) * 2020-05-22 2021-03-16 东北大学 Automatic control method of coiling machine in emergency of strip breakage of fully-continuous hot-rolled thin strip line
CN111633032B (en) * 2020-05-29 2021-11-19 首钢京唐钢铁联合有限责任公司 Strip steel tail anti-breaking method
JP7354934B2 (en) * 2020-06-08 2023-10-03 東芝三菱電機産業システム株式会社 Product quality analysis support system
CN113877968B (en) * 2020-07-01 2023-12-12 宝山钢铁股份有限公司 Method for preventing slipping of width-fixing machine

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