CN104759488A - 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 PDFInfo
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- CN104759488A CN104759488A CN201510155314.3A CN201510155314A CN104759488A CN 104759488 A CN104759488 A CN 104759488A CN 201510155314 A CN201510155314 A CN 201510155314A CN 104759488 A CN104759488 A CN 104759488A
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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
Technical field
The present invention relates to coiling machine and batch technical field, particularly relate to a kind of hot-strip that realizes and batch the method that flipper guide crosses Discrete control in steel process.
Background technology
Hot-strip batches flipper guide and is crossing in steel process as automatic segmentation controls, mainly comprise strip steel head position to detect, the control of crossing in steel process performs, tail part of band steel detects and End-Management performs, traditional plate rolling side guide is crossed steel and is controlled to control to realize by the detection of strip steel head position and omnidistance pressure closed loop, under this control mode, flipper guide life cycle is shorter, replacement frequency is frequent, spare parts consumption is too fast, the steel edge portion that easy appearance causes because flipper guide weares and teares scratches, scratch, the quality problems such as scraping, the solution of this problem can only be changed flipper guide by stopping and realize.
Summary of the invention
The object of the invention is to, there is provided a kind of hot-strip that realizes to batch the method that flipper guide crosses Discrete control in steel process, this method save equipment investment, significantly reduce flipper guide wearing and tearing and parts replacement again, reduce steel edge portion quality problems to produce, reduce labour intensity.
For achieving the above object, the present invention is achieved through the following technical solutions its object:
Realize hot-strip and batch the method that flipper guide crosses Discrete control in steel process, said method comprising the steps of:
1) strip steel head detects: whether the physical location of strip steel head enters in coiling machine and to complete flipper guide head short stroke control and input pressure closed loop function to utilize thermometal detector and reel load relay to judge;
2) plate rolling side guide Discrete control: at thermometal detector and reel load relay examine confirm that strip steel head enters coiling machine after, after strip steel head enters coiling machine to tail part of band steel be about to by finish rolling interval, according to the thickness of incoming band steel, flipper guide is controlled to switch to execution segmentation position control or segmentation Stress control by pressure closed loop;
3) tail part of band steel detects: judge that whether tail part of band steel is by finishing mill, determines whether plate rolling side guide exits sectional control function, Recovery and rebuild closed-loop control by finish rolling pressure magnetic instrument.
Preferably, described step 2) in, when being with the thickness < 5mm of steel, flipper guide performs segmentation Stress control.
Further preferably, described segmentation Stress control is specially: pressure is that 2-5KN makes plate rolling side guide lean against on band steel.
Preferably, described step 2) in, when being with the thickness >=5mm of steel, flipper guide performs segmentation position control.
Further preferably, described segmentation position control is: flipper guide opens to the opening degree of strip width+compensation 10mm.
Preferably, described step 2) in, in plate rolling side guide Discrete control process, opening or closing of plate rolling side guide relies on hydraulic cylinder and pinion and rack.
Preferably, described step 2) in, by CFC, (CFC full name is that Continuous Function Chart Chinese is meant to continuous control figure, its meaning is the editing machine of graphic based user interface, it passes through to the block designated parameter editted in advance or connects, thus realize creating CPU program structure) in selection block judge supplied materials thickness, form control centre is meant to by WINCC (WINCC full name Windows Control Center) Chinese, the human interface components of Siemens control system) in setting stepwise to realize plate rolling side guide Discrete control.
The present invention, in specific implementation process, by flipper guide Discrete control setting module, realizes the function that flipper guide crosses Discrete control in steel process; Judge supplied materials thickness by the selection block in CFC again, comparatively thin gauge strip can perform segmentation Stress control, and thicker belts steel can perform segmentation position control; The complete rear side guide plate of band coil of strip can return to original state.
The present invention overcomes the impact of flipper guide wearing and tearing on steel edge portion, can effectively reduce flipper guide wearing and tearing, improves flipper guide service life on the basis ensureing scroll, thus reduce that steel edge portion scratches, the generation of scratch and worker's labour intensity.
The invention has the advantages that: the present invention batches on the basis of original hardware configuration in maintenance, without the need to adding new detecting element, issue belt steel thickness by secondary to judge to perform segmentation position control or the pressure controlled condition of segmentation, judge band steel physical location by the pressure magnetic instrument signal of existing thermometal detector, reel load relay and finish rolling multi-section milling train, and perform and receding side guide plate sectional control function.Since the present invention hauls oneself willingly into and uses, stable smooth operation, safe and reliable, achieve the function that plate rolling side guide crosses Discrete control in steel process.
Accompanying drawing explanation
Fig. 1 is the flow chart of method of the present invention.
Detailed description of the invention
Below in conjunction with operation principle of the present invention, accompanying drawing and embodiment, the present invention is described in more detail, makes technical characterstic of the present invention clearly, but the invention is not restricted to these descriptions.
Embodiment 1
In the present embodiment, band steel supplied materials width 1250mm, thickness is 3.0mm (thickness <5.0mm), and the pressure of one-level setting is 11.2KN, pressure compensation-4KN.
First, in CFC, set the selection block of supplied materials thickness, when supplied materials thickness is less than 5.0mm, flipper guide performs segmentation Stress control.After strip steel head enters coiling machine and a process built by reel, thermometal detector now and reel load relay all detect band steel, the pressure closed loop that flipper guide no longer performs setting pressure (11.2-4) KN controls and performs in WINCC the pressure setting after having " flipper guide Discrete control " to drop into, when setting value is 1KN, flipper guide now can perform the segmentation Stress control of setting pressure 1KN, when tail part of band steel is by after finishing mill, flipper guide pressure setting exits the pressure setting of the 1KN after " flipper guide Discrete control " input, the pressure closed loop continuing to perform first class pressure setting (11.2-4) KN controls.This segmentation Stress control can on the basis ensureing band coil of strip shape, obvious reduction flipper guide edge wearing and tearing and prolongation flipper guide replacement cycle, (existing method needed within one day, to change three flipper guides, the method of the application is adopted only to need one day after to change primary side guide plate), quality of edges can effectively be ensured.
Embodiment 2
Be with steel supplied materials width 1250mm in the present embodiment 3, thickness is 7.75mm (thickness >=5.0mm), and the pressure of one-level setting is 18.4KN, pressure compensation-5KN
First, in CFC, set the selection block of supplied materials thickness, when supplied materials thickness is more than or equal to 5.0mm, flipper guide performs segmentation position control.After strip steel head enters coiling machine and a process built by reel, thermometal detector now and reel load relay all detect band steel, and the pressure closed loop that flipper guide no longer performs setting pressure (18.4-5) KN controls and performs in WINCC the segmentation position control after having " flipper guide Discrete control " to drop into.Set in WINCC position compensation be 10mm, namely after thermometal detector and reel load relay all detect band steel, the pressure closed loop that flipper guide can exit first class pressure setting (18.4-5) KN controls, select to perform segmentation position control (namely flipper guide opens to the opening degree that supplied materials width 1250mm+ compensates 10mm), now flipper guide is not by band steel, (existing method needs within one day, to change three flipper guides can effectively to reduce the wearing and tearing of flipper guide edge on the basis ensureing scroll, the method of the application is adopted only to need one day after to change primary side guide plate), replacement cycle can obviously extend, quality of edges can effectively be ensured.
Comparative example 1
This comparative example 1 does not perform " flipper guide Discrete control " function.In this comparative example, band steel supplied materials width 1250mm, thickness is 3.0mm, and the pressure of one-level setting is 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 detect band steel, flipper guide can drop into pressure closed loop until tail part of band steel enters in coiling machine, in this process, flipper guide can be pressed against steel edge portion all the time, and perform pressure closed loop by setting pressure (11.2-4) KN, although be with coil of strip shape effectively to be ensured in this case, but it is very fast to there are flipper guide wearing and tearing, replacement cycle is shorter, spare parts consumption too fast and very easily border scratch, scratch, the strip quality problems such as scraping press-in.In the real work of this comparative example, need within one day, change three flipper guides.
The only exemplary example of the present invention has gone out the function that side plate rolling side guide crosses Discrete control in steel process, controls same being suitable for the flipper guide of opposite side.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to embodiment to invention has been detailed description, will be understood by those skilled in the art that, modify to technical scheme of the present invention or equivalent replacement, do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (7)
1. realize hot-strip and batch the method that flipper guide crosses Discrete control in steel process, said method comprising the steps of:
1) strip steel head detects: whether the physical location of strip steel head enters in coiling machine and to complete flipper guide head short stroke control and input pressure closed loop function to utilize thermometal detector and reel load relay to judge;
2) plate rolling side guide Discrete control: at thermometal detector and reel load relay examine confirm that strip steel head enters coiling machine after, enter coiling machine in strip steel head to be about to by finish rolling interval to tail part of band steel, according to the thickness of incoming band steel, flipper guide is controlled to switch to execution segmentation position control or segmentation Stress control by pressure closed loop;
3) tail part of band steel detects: judge that whether tail part of band steel is by finishing mill, determines whether plate rolling side guide exits sectional control function, Recovery and rebuild closed-loop control by finish rolling pressure magnetic instrument.
2. method according to claim 1, is characterized in that, described step 2) in, when being with the thickness < 5mm of steel, flipper guide performs segmentation Stress control.
3. method according to claim 1 and 2, is characterized in that, described segmentation Stress control is specially: pressure is that 2-5KN makes plate rolling side guide lean against on band steel.
4. method according to claim 1, is characterized in that, described step 2) in, when being with the thickness >=5mm of steel, flipper guide performs segmentation position control.
5. the method according to claim 1 or 4, is characterized in that, described segmentation position control is: flipper guide opens to the opening degree of strip width+compensation 10mm.
6. method according to claim 1, is characterized in that, described step 2) in, in plate rolling side guide Discrete control process, opening or closing of plate rolling side guide relies on hydraulic cylinder and pinion and rack.
7. method according to claim 1, is characterized in that, described step 2) in, judged the thickness of incoming band steel by the selection block in CFC, realize plate rolling side guide Discrete control by the setting stepwise in WINCC.
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| CN201510155314.3A CN104759488B (en) | 2015-04-02 | 2015-04-02 | Method for realizing sectional control during steel passing process of hot-rolled strip steel coiling side guide plate |
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| CN201510155314.3A CN104759488B (en) | 2015-04-02 | 2015-04-02 | Method for realizing sectional control during steel passing process of hot-rolled strip steel coiling side guide plate |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080967A (en) * | 2015-09-29 | 2015-11-25 | 山东钢铁股份有限公司 | Secondary rolling method of broken belt roll of single-rack reversible cold rolling mill |
| CN107597880A (en) * | 2017-09-15 | 2018-01-19 | 首钢京唐钢铁联合有限责任公司 | Control method for side guide plate of coiling machine for reducing abrasion of wear-resisting plate |
| CN108372205A (en) * | 2018-02-27 | 2018-08-07 | 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 |
| CN108714629A (en) * | 2018-06-13 | 2018-10-30 | 武汉钢铁有限公司 | A kind of hot continuous rolling plate rolling side guide pressure position integrated control method |
| 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 |
| CN111570529A (en) * | 2020-05-22 | 2020-08-25 | 东北大学 | Automatic control method for fully-continuous hot-rolled thin strip line broken strip emergency coiling machine |
| CN111633032A (en) * | 2020-05-29 | 2020-09-08 | 首钢京唐钢铁联合有限责任公司 | Strip steel tail anti-breaking method |
| CN113834828A (en) * | 2020-06-08 | 2021-12-24 | 东芝三菱电机产业系统株式会社 | Product quality analysis support system |
| CN113877968A (en) * | 2020-07-01 | 2022-01-04 | 宝山钢铁股份有限公司 | Method for preventing width fixing machine from slipping |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107597880A (en) * | 2017-09-15 | 2018-01-19 | 首钢京唐钢铁联合有限责任公司 | Control method for side guide plate of coiling machine for reducing abrasion of wear-resisting plate |
| CN108372205A (en) * | 2018-02-27 | 2018-08-07 | 山东钢铁股份有限公司 | A kind of hot-strip reels pinch roller crosses Discrete control method during steel |
| 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 |
| CN108714629A (en) * | 2018-06-13 | 2018-10-30 | 武汉钢铁有限公司 | A kind of hot continuous rolling plate rolling side guide pressure position integrated control method |
| CN111570529A (en) * | 2020-05-22 | 2020-08-25 | 东北大学 | Automatic control method for fully-continuous hot-rolled thin strip line broken strip emergency coiling machine |
| CN111633032A (en) * | 2020-05-29 | 2020-09-08 | 首钢京唐钢铁联合有限责任公司 | Strip steel tail anti-breaking method |
| 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 |
| CN113834828A (en) * | 2020-06-08 | 2021-12-24 | 东芝三菱电机产业系统株式会社 | Product quality analysis support system |
| CN113877968A (en) * | 2020-07-01 | 2022-01-04 | 宝山钢铁股份有限公司 | Method for preventing width fixing machine from slipping |
| 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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