CN102560071A - Method for grinding hearth roll of continuous annealing unit on line - Google Patents
Method for grinding hearth roll of continuous annealing unit on line Download PDFInfo
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- CN102560071A CN102560071A CN2012100122226A CN201210012222A CN102560071A CN 102560071 A CN102560071 A CN 102560071A CN 2012100122226 A CN2012100122226 A CN 2012100122226A CN 201210012222 A CN201210012222 A CN 201210012222A CN 102560071 A CN102560071 A CN 102560071A
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Abstract
The invention provides a method for grinding a hearth roll of a continuous annealing unit on line, which aims to solve the problem of extremely easy nodulation of the hearth roll of a silicon steel annealing unit. With the adoption of the method, production and operation personnel can directly operate through the existing man-machine interface under the situations that the furnace temperature is not required to be reduced, and any mechanical equipment is not required to be increased, and the hearth roll can be ground on line at any time according to site demands. The method has the beneficial effects that the efficiency is high, the operation is convenient and quick, the quality of the lower surface of finished strip steel is ensured, energy sources are effectively saved, and the production efficiency and the yield of product are improved.
Description
Technical field
The present invention relates to the furnace bottom roll control of lehre, especially, relate to the method that the online mill furnace bottom roll of unit moves back in a kind of company.
Background technology
Silicon steel continuous heat treatment unit is after operation for some time, and the adherent fine dusts of belt steel surface is piled up at the hole place of carbon cover, forms " dross " at furnace bottom roll easily under the high temperature.The direct harm of dross is to make the band steel produce defectives such as bright seal, scuffing, chromium wound, thereby influences strip surface quality, and then influences yield rate.
Fig. 1 it typically is the off-line operation method for the domestic method of the elimination furnace bottom roll dross that prior art adopted.As shown in Figure 1, this traditional off-line method comprises the steps:
(1 in step 100, after the discovery furnace bottom roll has dross.If dross is arranged, stop to produce, proceed to step 101.In step 101, the band steel as raw materials for production in the lehre is extracted out, reduce furnace temperature simultaneously; If there is not dross, get back to step 109, continue to produce.
(2) in step 102, make a planker suitable with the furnace bottom roll width, steel cable is connected with an outer elevator motor of body of heater, enter into step 103 thereafter.
(3) in step 103, planker is placed on the furnace roller, start furnace bottom roll and planker is sent in the stove, till planker is transported to the lehre outlet position through furnace bottom roll.At this moment, stop furnace bottom roll and rotate, enter into step 104 then.
(4), keep the elevator motor of furnace bottom roll supporting plate motionless, with less rotating speed operation furnace bottom roll in step 104; Dross is removed in the lower surface of supporting plate and furnace bottom roll friction, enters into step 105 then.
(5) in step 105, after after a while, stop furnace bottom roll motion, start volume poplar motor, make planker to the lehre entry position segment distance that moves, this drags identical with planker length apart from length, keeps the elevator motor motionless again, and furnace bottom roll is moved.Through planker lower surface and furnace bottom roll friction, further remove the dross of furnace bottom roll.So back and forth carry out, proceed to step 106.
(6) in step 106, judge whether planker arrives the lehre inlet, if not, get back to step 104, repeating step 104 to 106; If proceed to step 107.
(7) in step 107, judge further whether furnace bottom roll still exists dross, if exist, proceed to step 102, repeating step 102 to 107 is till removing the furnace bottom roll dross fully; If do not exist, enter into step 108.
(8) in step 108, penetrate the band steel, lehre heats up, and proceeds to step 109, continues to produce.
This shows; The method operation more complicated of mill furnace bottom roll of the prior art need be added new mechanical means simultaneously, and energy consumption is bigger in the lehre cooling temperature-rise period; Producers can not independently accomplish the work of mill furnace bottom roll, have influenced production efficiency largely.
Application number is control and the treatment process that the application of China of 200910011962.9 discloses a kind of bottom roller dross of carbon sleeve furnace; It utilizes the electric current of scrubbing of control brush roll; Reduce the use of the serious transition volume of oxidation,, regularly adjust the furnace roller rotating speed according to process speed, suitable furnace pressure, dew point, the hydrogen richness of the different controls of technological temperature; Reduce furnace roller and strip speed difference, the effective preventive means such as grade of technological temperature conversion reduce the possibility that dross occurs during the exchange of control steel.This method need be controlled a plurality of variablees, and controlled variable is many, complicated operation, thereby the efficient of elimination dross is lower.
Summary of the invention
The object of the present invention is to provide a kind of company to move back the method for the online mill furnace bottom roll of unit.Advantage of the present invention is, neither need add any mechanical means, also need not reduce the temperature of lehre.Only need operator can realize the function of online mill furnace roller through man-machine picture modification individual parameters.This method is simple to operate, can enhance productivity, reduce labor intensity.
According to example embodiment of the present invention, the method that the present invention provides a kind of company to move back the online mill furnace bottom roll of unit, said company moves back unit and comprises PLC treater, furnace bottom roll transmission mechanism and operator-machine-interface interface.Wherein, said method comprises the steps: 1) judge whether steel defect is caused by the furnace bottom roll dross; 2) steel defect is caused by the furnace bottom roll defective, stops using and produces the band steel, will be with the steel raw material to change the mill roll strip into, and production line moves with certain creep speed, orders about the mill roll strip and gets in the lehre, to judge the dross position of furnace bottom roll; 3) parameter through the said furnace bottom roll transmission mechanism of said operator-machine-interface interface modification; Reduce the rotating speed of dross furnace bottom roll; Make the linear resonance surface velocity of dross furnace bottom roll different, and then friction relatively takes place, realize removing the dross of dross furnace bottom roll with the speed of mill roll strip; Whether the dross of 4) judging the dross furnace bottom roll polishes thoroughly, if the work of mill furnace bottom roll is accomplished; Producers revert to original numerical value with the parameter of revising, and stop using the mill roll strip, reuse and produce the band steel, continue to produce.
Preferably; Said step 2) further comprises: after the mill roll strip gets in the lehre; Stop to grind the motion of roll strip then, furnace bottom roll is rotated, stay roll marks at the lower surface that grinds roll strip; Thereafter will grind the roll strip lehre that turns round out again, the dross position of confirming furnace bottom roll according to the characteristic and the position of roll marks.
Preferably, in said step 2) in, certain creep speed of production line is 25m/min.
Preferably, in said step 3), the parameter of said furnace bottom roll transmission mechanism comprises diameter parameters or linear resonance surface velocity range parameter or two combinations of parameters of dross furnace bottom roll.
Preferably, in said step 3), the linear resonance surface velocity that reduces the dross furnace bottom roll is meant reduces to 10 m/min with the linear resonance surface velocity of dross furnace bottom roll.
In another example embodiment; Said PLC treater receives the input at said operator-machine-interface interface; And the CW after the computing is passed through network delivery give said furnace bottom roll transmission mechanism, said furnace bottom roll transmission mechanism changes the furnace bottom roll rotating speed of motor according to the CW that said PLC treater passes over.
The beneficial effect that the present invention obtains is: need not increases new hardware device, utilize original soft, the hardware platform of production line with regard to the lifting of feasible system function, enhance productivity, and need not reduce temperature in the lehre, realize the purpose of save energy.
Description of drawings
To describe preferred but non-restrictive example of the present invention now, of the present invention these will become when describing in detail as follows with reference to advantages obviously with other characteristics, aspect and advantage, wherein:
Fig. 1 is the method flow diagram of off-line mill furnace bottom roll in the prior art;
Fig. 2 is the method flow diagram according to online mill furnace bottom roll of the present invention.
Embodiment
Below description only be exemplary and be not in essence in order to limit the disclosure, application or purposes.
Through the combined programming of PLC and transmission, can realize that the furnace bottom roll transmission speed is online adjustable.Method needs according to online mill furnace bottom roll of the present invention increase online modification furnace bottom roll transmission mechanism parameter interface on existing operator-machine-interface interface.This interface comprises at least two the furnace bottom roll transmission mechanism parameters that can supply revise, and these at least two parameters are furnace bottom roll diameter and linear resonance surface velocity scope.In this interface, operator can revise the diameter parameters or the linear resonance surface velocity scope of furnace bottom roll according to the dross situation of furnace bottom roll.After operator accomplished furnace bottom roll transmission mechanism parameter modification, the PLC treater was given the furnace bottom roll transmission mechanism with CW through network delivery according to the input of operator-machine-interface picture after the computing.The CW that the furnace bottom roll transmission mechanism passes over according to the PLC treater changes the furnace bottom roll rotating speed of motor, makes the linear resonance surface velocity of furnace bottom roll of dross different with strip speed, and then friction relatively takes place, and reaches the purpose of removal furnace bottom roll dross.
Fig. 2 is the method flow diagram according to online mill furnace bottom roll of the present invention.As shown in Figure 2, when finding that the production belt steel surface is defective, carry out following step:
At first enter into step 201,, judge whether steel defect is caused by the furnace bottom roll dross,, get into step 202 if answer Yes in step 201.
In step 202, stop using and produce the band steel, will be with the steel raw material to change the mill roll strip into, production line continues the creep speed running with 25m/min (meter/minute), and the mill roll strip is got in the lehre; Stop to grind the motion of roll strip then, furnace bottom roll is rotated, stay roll marks at the lower surface of mill roll strip, will grind the roll strip lehre that turns round out again, the position according to the characteristic and the position judgment furnace bottom roll dross of roll marks gets into step 203 then.
In step 203; Producers revise the diameter parameters or the linear resonance surface velocity range parameter of dross furnace bottom roll through the operator-machine-interface interface, make its speed reduce to 10m/min; Because current grinding roller strip speed is 25m/min; There is velocity contrast between the two, friction relatively takes place, thus the polishing furnace bottom roll.After operation for some time, proceed to step 204 in step 203.
In step 204, observe the surface quality problems whether mill furnace bottom roll strip still exists the dross furnace bottom roll to cause.If have, then get back to step 203, continue polishing dross furnace bottom roll; If no, then grinding roller work is accomplished, and proceeds to step 205.
In step 205, producers revert to original numerical value with the parameter of revising, and stop using the mill roll strip, reuse and produce the band steel, continue to produce.
Described and can be known by preceding text, with respect to the method for traditional off-line mill furnace bottom roll shown in Figure 1, the method for mill furnace bottom roll of the present invention is greatly simplified, and simple to operate, need not to increase new hardware device.The method of online mill furnace bottom roll of the present invention is utilized original soft, the hardware platform of production line, need not increase new investment with regard to the lifting of feasible system function, enhance productivity, and need not reduce temperature in the lehre, thereby can save energy.
The application number of comparing is control and the treatment process that China of 200910011962.9 applies for disclosed a kind of bottom roller dross of carbon sleeve furnace; Need not to control a plurality of processing parameters and process speed; Simple to operate, the time of eliminating the furnace bottom roll dross is short, and extensive overlying strip production is fast; And need not to increase new machinery or electronics, this has just highlighted the advantage of online mill furnace bottom roll method of the present invention effectively.
Although having combined to think at present the most practical has described the present invention with preferred embodiment, should be appreciated that, the invention is not restricted to the disclosed embodiments.The invention is intended to cover the spirit and interior different remodeling and the equivalent arrangements scheme of scope that are included in accessory claim.
Claims (6)
1. the method for the online mill furnace bottom roll of unit is moved back by a company, and said company moves back unit and comprises PLC treater, furnace bottom roll transmission mechanism and operator-machine-interface interface, it is characterized in that said method comprises the steps:
1) judges whether steel defect is caused by the furnace bottom roll dross;
2) steel defect is caused by the furnace bottom roll defective, stops using and produces the band steel, will be with the steel raw material to change the mill roll strip into, and production line moves with certain creep speed, orders about the mill roll strip and gets in the lehre, to judge the dross position of furnace bottom roll;
3) parameter through the said furnace bottom roll transmission mechanism of said operator-machine-interface interface modification; Reduce the rotating speed of dross furnace bottom roll; Make the linear resonance surface velocity of dross furnace bottom roll different, and then friction relatively takes place, realize removing the dross of dross furnace bottom roll with the travelling speed of mill roll strip;
Whether the dross of 4) judging the dross furnace bottom roll polishes thoroughly, if the work of mill furnace bottom roll is accomplished; Producers revert to original numerical value with the parameter of revising, and stop using the mill roll strip, reuse and produce the band steel, continue to produce.
2. the method for claim 1; It is characterized in that said step 2) further comprise: after the mill roll strip gets in the lehre, the motion that stops to grind roll strip then; Furnace bottom roll is rotated; Lower surface at the mill roll strip stays roll marks, will grind the roll strip lehre that turns round out thereafter again, the dross position of confirming furnace bottom roll according to the characteristic and the position of roll marks.
3. the method for claim 1 is characterized in that, in said step 2) in, certain creep speed of production line is 25m/min.
4. the method for claim 1 is characterized in that, in said step 3), the parameter of said furnace bottom roll transmission mechanism comprises diameter parameters or linear resonance surface velocity range parameter or two combinations of parameters of dross furnace bottom roll.
5. the method for claim 1 is characterized in that, in said step 3), the linear resonance surface velocity that reduces the dross furnace bottom roll is meant reduces to 10 m/min with the linear resonance surface velocity of dross furnace bottom roll.
6. the method for claim 1; It is characterized in that; Said PLC treater receives the input at said operator-machine-interface interface; And the CW after the computing is passed through network delivery give said furnace bottom roll transmission mechanism, said furnace bottom roll transmission mechanism changes the furnace bottom roll rotating speed of motor according to the CW that said PLC treater passes over.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100122226A CN102560071A (en) | 2012-01-16 | 2012-01-16 | Method for grinding hearth roll of continuous annealing unit on line |
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| CN2012100122226A CN102560071A (en) | 2012-01-16 | 2012-01-16 | Method for grinding hearth roll of continuous annealing unit on line |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899478A (en) * | 2012-10-16 | 2013-01-30 | 北京首钢自动化信息技术有限公司 | Method for removing matter adhered to furnace roller of annealing furnace |
| CN104690608A (en) * | 2015-03-03 | 2015-06-10 | 首钢京唐钢铁联合有限责任公司 | Method and device for polishing furnace roller |
| CN105385836A (en) * | 2015-12-21 | 2016-03-09 | 马鞍山钢铁股份有限公司 | Method for processing furnace roller nodules on line without opening furnace |
| CN108676997A (en) * | 2018-05-21 | 2018-10-19 | 马鞍山钢铁股份有限公司 | The lookup method of impression defect generation position in vertical continuous annealing furnace stove |
| CN109926895A (en) * | 2019-02-28 | 2019-06-25 | 北京首钢股份有限公司 | The online reconditioning control method of furnace roller and device in a kind of annealing furnace |
| CN113798981A (en) * | 2021-08-30 | 2021-12-17 | 马钢(合肥)板材有限责任公司 | Method for quickly eliminating furnace roller surface nodules |
| CN115323126A (en) * | 2022-07-27 | 2022-11-11 | 攀钢集团西昌钢钒有限公司 | Method for quickly reducing accretions on furnace roller of continuous annealing furnace and prolonging service cycle of furnace roller |
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| CN101906529A (en) * | 2009-06-08 | 2010-12-08 | 鞍钢股份有限公司 | Control and treatment method for carbon sleeve furnace bottom roller accretion |
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| CN101906529A (en) * | 2009-06-08 | 2010-12-08 | 鞍钢股份有限公司 | Control and treatment method for carbon sleeve furnace bottom roller accretion |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899478A (en) * | 2012-10-16 | 2013-01-30 | 北京首钢自动化信息技术有限公司 | Method for removing matter adhered to furnace roller of annealing furnace |
| CN104690608A (en) * | 2015-03-03 | 2015-06-10 | 首钢京唐钢铁联合有限责任公司 | Method and device for polishing furnace roller |
| CN105385836A (en) * | 2015-12-21 | 2016-03-09 | 马鞍山钢铁股份有限公司 | Method for processing furnace roller nodules on line without opening furnace |
| CN108676997A (en) * | 2018-05-21 | 2018-10-19 | 马鞍山钢铁股份有限公司 | The lookup method of impression defect generation position in vertical continuous annealing furnace stove |
| CN108676997B (en) * | 2018-05-21 | 2020-02-07 | 马鞍山钢铁股份有限公司 | Method for searching position of indentation defect generation in vertical continuous annealing furnace |
| CN109926895A (en) * | 2019-02-28 | 2019-06-25 | 北京首钢股份有限公司 | The online reconditioning control method of furnace roller and device in a kind of annealing furnace |
| CN113798981A (en) * | 2021-08-30 | 2021-12-17 | 马钢(合肥)板材有限责任公司 | Method for quickly eliminating furnace roller surface nodules |
| CN115323126A (en) * | 2022-07-27 | 2022-11-11 | 攀钢集团西昌钢钒有限公司 | Method for quickly reducing accretions on furnace roller of continuous annealing furnace and prolonging service cycle of furnace roller |
| CN115323126B (en) * | 2022-07-27 | 2023-05-23 | 攀钢集团西昌钢钒有限公司 | Method for rapidly reducing furnace roller nodulation of continuous annealing furnace and prolonging service cycle of furnace roller nodulation |
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Application publication date: 20120711 |