CN105112643A - Heating output control method for continuous annealing production line - Google Patents

Heating output control method for continuous annealing production line Download PDF

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CN105112643A
CN105112643A CN201510585471.8A CN201510585471A CN105112643A CN 105112643 A CN105112643 A CN 105112643A CN 201510585471 A CN201510585471 A CN 201510585471A CN 105112643 A CN105112643 A CN 105112643A
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band steel
burner
ratio
row
annealing furnace
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CN105112643B (en
Inventor
任伟超
孙建新
郑晓飞
王哲
肖超
樊长赫
边聪力
宋凯悦
韩子明
李江腾
刘宗发
康永华
李振
张宝来
张金臣
周建
尹显东
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Shougang Jingtang United Iron and Steel Co Ltd
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Shougang Jingtang United Iron and Steel Co Ltd
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Abstract

The invention discloses a heating output control method for a continuous annealing production line, which is applied to a control system of the continuous annealing production line and solves the technical problem that thin strip steel is easy to thermally buckle in a continuous annealing furnace in the prior art. The heating output control method for the continuous annealing production line comprises the following steps: determining the width-thickness ratio of the strip steel before the strip steel enters a continuous annealing furnace area of a continuous annealing production line; judging whether the width-thickness ratio of the strip steel is within a first width-thickness ratio range or not to obtain a first judgment result; if the first judgment result is yes, a first mixed heating mode matched with the width-thickness ratio of the strip steel is determined from the multiple mixed heating modes, wherein each mixed heating mode is a proportional mixing mode and a normal heating mode, and after the strip steel enters the continuous annealing furnace zone, the heating output of each row of burners in the continuous annealing furnace zone is adjusted according to a first power output curve of the first mixed heating mode, so that the product quality of the thin-specification strip steel is improved.

Description

A kind of company moves back product line heating output control method
Technical field
The present invention relates to cold rolled strip technical field, be specifically related to a kind of company move back product line heating output control method.
Background technology
Continuous annealing machine stove is the important step of cold rolled strip steel production, and continuous annealing machine stove and accessory has the series of advantages such as flow process is short, output is high, good product quality, is indispensable annealing device.
In prior art, the heating mode adopted in continuous annealing machine stove mainly contains three kinds, is respectively: normal mode: in continuous annealing machine stove often row radiation pipe burner tip to add thermal output identical; Ratio mode: in continuous annealing machine stove, often the thermal output that adds of row radiation pipe burner tip is increase trend; Ribbon Steel pattern: in continuous annealing furnace, often the thermal output that adds of row radiation pipe burner tip is minimizing trend.
What require tinning substrate quality product along with user improves constantly, and the annealing product specification in continuous annealing machine stove is more and more thinner, and plate speed is more and more higher.At present, when producing thin gauge strip based on the heating mode adopted in existing continuous annealing machine stove, at heating zone inlet zone roll temperature and plate temperature excessive temperature differentials, thus hot wooden dipper is bent to cause thin gauge strip easily to occur in continuous annealing machine stove.
Summary of the invention
The embodiment of the present invention moves back product line heating output control method by providing a kind of company, solves thin gauge strip in prior art in continuous annealing machine stove, easily occurs the technical problem of hot wooden dipper song.
Embodiments provide a kind of connect to move back produce line heating output control method, be applied to described company and move back in the Controlling System of producing line, described method comprises: enter before described company moves back the annealing furnace district producing line at band steel, determine the band steel flakiness ratio of described band steel; Judge described band steel flakiness ratio whether within the scope of the first flakiness ratio, obtain the first judged result; If described first judged result is yes, then determine from multiple Hybrid Heating pattern and the first Hybrid Heating pattern that described band steel flakiness ratio is mated, wherein, often kind of described Hybrid Heating pattern is the ratio mixing of ratio heating mode and normal heating pattern, described ratio heating mode be often row burner to add thermal output identical all each other, described normal heating pattern be described burner add thermal output along band steel traffic direction in presetting increase trend; Enter behind described annealing furnace district until described band steel, what often arrange described burner in annealing furnace district according to the first power stage curve adjustment of described first Hybrid Heating pattern adds thermal output, wherein, the power stage curve that multiple described Hybrid Heating pattern is corresponding is different.
Preferably, judge described band steel flakiness ratio whether within the scope of the first flakiness ratio described, before obtaining the first judged result, described method also comprises: judge whether the belt steel thickness of described band steel is greater than the first thickness threshold value, obtains the second judged result; When described second judged result is for being, automatically switch to described ratio heating mode; Enter behind described annealing furnace district until described band steel, control described often row burner and heat with the thermal output that adds identical each other.
Preferably, described band steel flakiness ratio is judged whether within the scope of the first flakiness ratio described, after obtaining the first judged result, described method also comprises: if described first judged result shows that described band steel flakiness ratio is less than the lower value of described first flakiness ratio scope, automatically switch to described ratio heating mode; Enter behind described annealing furnace district until described band steel, control described often row burner and heat with the thermal output that adds identical each other.
Preferably, described band steel flakiness ratio is judged whether within the scope of the first flakiness ratio described, after obtaining the first judged result, described method also comprises: if described first judged result shows described belt steel thickness than the higher limit being greater than described first flakiness ratio scope, automatically switch to described normal heating pattern; Enter behind described annealing furnace district until described band steel, control described burner and heat according to described default increase trend.
Preferably, often arrange in described annealing furnace district according to the first power stage curve adjustment of described first Hybrid Heating pattern described burner add thermal output before, described method also comprises: the hourly output according to current production described band steel is optimized described first power stage curve, makes described first power stage slope of a curve relevant to described hourly output.
Preferably, described first flakiness ratio scope is 2000 ~ 4000.
Preferably, often arrange in described annealing furnace district according to the first power stage curve adjustment of described first Hybrid Heating pattern described burner add thermal output after, be positioned at described annealing furnace district heating zone inlet zone at least one described in the radiator tube power of burner be greater than the radiator tube power of the described burner being positioned at other regions, described annealing furnace district.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
Due to adopt in the power stage curve adjustment annealing furnace district of the first Hybrid Heating pattern of mating according to current band steel flakiness ratio of producing band steel often arrange described burner add thermal output, heating zone is made to add the flakiness ratio specifications vary of thermal output according to band steel, prevent Thin Strip Steel at heating zone inlet zone roll temperature and plate temperature excessive temperature differentials, thus strip stable logical plate in steel stove, solve thin gauge strip in prior art in continuous annealing machine stove, easily occur the technical problem of hot wooden dipper song, and then improve the quality product of thin gauge strip.
Further, power stage curve is optimized according to hourly output owing to have employed, make power stage slope of a curve relevant to the hourly output of band steel, prevent heating zone 1 ~ 3 district of the excessive annealing furnace caused of hourly output jump from occurring that temperature is uprushed, thus the increase achieved along with stove passband speed, belt steel thickness and width, the powertrace slope of the every row burner of heating zone increases gradually, effectively achieves the stable logical plate of band steel, improves set steady and lead to plate ability.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 connects the schema moving back and produce line heating output control method in the embodiment of the present invention;
Fig. 2 is the heating zone output model of hourly output 75 tons in the embodiment of the present invention;
Fig. 3 is the heating zone output model of hourly output 37.5 tons in the embodiment of the present invention;
Fig. 4 is the heating zone output model that in the embodiment of the present invention, hourly output is less than 5 tons.
Embodiment
In continuous annealing machine stove, easily occur the technical problem of hot wooden dipper song to solve thin gauge strip in prior art, embodiments provide and a kind of company move back product line heating output control method, general thought is as follows:
Before band steel enters the annealing furnace district connecting and move back and produce line, the first mated Hybrid Heating pattern is determined according to current band steel flakiness ratio of producing band steel, band steel enter connect move back produce line annealing furnace district after, according in the power stage curve adjustment annealing furnace district of the first Hybrid Heating pattern often row burner add thermal output.Heating zone is made to add the flakiness ratio specifications vary of thermal output according to band steel, the hot wooden dipper preventing Thin Strip Steel from occurring in heating zone inlet zone roll temperature and plate temperature excessive temperature differentials is bent, thus strip stable logical plate in steel stove, and then improve the quality product of thin gauge strip.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Shown in figure 1, the one that the embodiment of the present invention provides connects to move back produces line heating output control method, being applied to one connects in the Controlling System of moving back and producing line, this company moves back and produces line heating output control method, 0.15mm ~ 0.55mm is met mainly for thickness specification, width specifications meets the thin gauge strip of 730mm ~ 1280mm, to solve the technical problem that hot wooden dipper song easily appears in thin gauge strip in continuous annealing machine stove, but the technical scheme that the embodiment of the present invention provides not is the cold rolled strip steel production that can only be applicable to meet above-mentioned specification limit.
Shown in figure 1, the company that the embodiment of the present invention provides moves back product line heating output control method and comprises following flow process:
S101: before band steel enters the annealing furnace district connecting and move back and produce line, determines the band steel flakiness ratio being with steel.Concrete, band steel flakiness ratio reads by connecting the Controlling System of moving back product line.
S102: judge band steel flakiness ratio whether within the scope of the first flakiness ratio, obtain the first judged result.
First flakiness ratio scope is for presetting a flakiness ratio numerical intervals, and preferably, the first flakiness ratio scope that sets is 2000 ~ 4000, then the lower value of the first flakiness ratio scope is 2000, and higher limit is 4000.
Different according to the first judged result that S102 obtains, then determine that different heating modes heats, thus the change realized according to band steel flakiness ratio specification and use different heating modes, that carries out to regulate in annealing furnace district often row burner according to current band steel flakiness ratio of producing band steel adds thermal output.
The first judged result: if the first judged result shows that this band steel flakiness ratio is within the scope of the first flakiness ratio, then perform S103 ~ S104.
S103: if the first judged result is yes, then determine from multiple Hybrid Heating pattern and the first Hybrid Heating pattern that this band steel flakiness ratio is mated, wherein, often kind of Hybrid Heating pattern is the ratio mixing of ratio heating mode and normal heating pattern, ratio heating mode be often row burner to add thermal output identical all each other, normal heating pattern be burner add thermal output along band steel traffic direction in presetting increase trend.
In specific implementation process, shown in reference table 1, in annealing furnace district, 15 row burners are set altogether along band steel traffic direction, are followed successively by: AA row, AB row, AC row, AD row, AE row, AF row, AG row, AH row, AI row, AJ row, AK row, AL row, AM row, AN row, AO row.For often to arrange set burner number shown in table 1, and the often power of the radiator tube that row burner is corresponding and gas flow.
Table 1. radiator tube power and gas flow
Row Burner quantity (individual) Power (Kw) Gas flow (Nm3/h)
AA 6 100 127.06
AB 12 140 355.76
AC 12 140 355.76
AD 6 140 177.88
AE 6 140 177.88
AF 10 140 296.47
AG 12 125 317.65
AH 12 125 317.65
AI 12 125 317.65
AJ 12 125 317.65
AK 12 125 317.65
AL 12 100 254.12
AM 12 100 254.12
AN 12 100 254.12
AO 6 100 127.06
Normal heating pattern be adjacent column burner add thermal output in presetting increase trend, concrete, often the adding shown in thermal output reference table 2 of row burner.As seen from Table 2, the thermal output that adds along the AA row ~ AO row burner being with steel traffic direction to set gradually is being with steel traffic direction in presetting increase trend.Concrete as seen from Table 2, AB row burner add that thermal output is greater than AA row burner add thermal output, AC row burner add that thermal output is greater than AB row burner add thermal output, etc.Such as, when power=50, along band steel traffic direction, what burner was corresponding add thermal output is followed successively by: 0,12,25,34,42,47,53,58,61,64,67,69,71,72,74.
In specific implementation process, normal heating pattern under different power often row burner add thermal output with reference to shown in following table 2.
Under table 2. normal heating pattern often row burner add thermal output
Power 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AO 0 24 35 43 49 55 60 64 67 71 74 77 79 82 84 87 90 92 95 97 100
AN 0 20 31 40 47 52 57 62 66 69 72 75 78 81 83 86 89 92 95 97 100
AM 0 16 27 36 44 50 55 59 64 67 71 74 77 80 83 86 88 91 94 97 100
AL 0 11 23 32 40 47 52 57 62 66 69 72 75 79 82 85 88 91 94 97 100
AK 0 5 18 28 37 43 49 54 59 63 67 71 74 77 80 84 87 90 94 97 100
AJ 0 0 11 22 31 39 45 51 56 60 64 68 72 75 79 82 86 89 93 96 100
AI 0 0 4 16 25 33 40 46 52 57 61 65 69 73 77 81 85 89 92 96 100
AH 0 0 0 7 18 27 35 41 47 53 58 62 66 71 75 79 83 87 92 96 100
AG 0 0 0 0 9 19 28 35 42 48 53 58 63 68 72 77 81 86 91 95 100
AF 0 0 0 0 0 9 19 27 35 41 47 54 58 64 69 74 79 84 90 95 100
AE 0 0 0 0 0 0 10 19 27 35 42 48 54 60 65 71 77 83 88 94 100
AD 0 0 0 0 0 0 0 9 18 27 34 41 48 55 61 68 74 81 87 94 100
AC 0 0 0 0 0 0 0 0 7 16 25 33 40 48 55 63 70 78 85 93 100
AB 0 0 0 0 0 0 0 0 0 2 12 22 30 39 48 57 65 74 83 91 100
AA 0 0 0 0 0 0 0 0 0 0 0 6 16 27 37 48 58 69 79 90 100
Shown in associative list 3, ratio heating mode be often row burner add thermal output homogeneous phase with, concrete, under ratio heating mode often row burner to add thermal output as shown in table 2, as seen from Table 2, the AA row ~ AO row burner set gradually along band steel traffic direction to add thermal output identical each other.Such as, when power=50, the thermal output that adds of AA row ~ AO row burner is 50, such as, when power=90, the thermal output that adds of AA row ~ AO row burner is 90, in specific implementation process, ratio heating mode under different power often row burner add thermal output with reference to shown in following table 3.
Under table 3. ratio heating mode often row burner add thermal output
Power 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AO 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AN 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AM 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AL 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AK 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AJ 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AI 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AH 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AG 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AF 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AE 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AD 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AC 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AB 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
AA 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Concrete, the Hybrid Heating pattern of different band steel flakiness ratio couplings is different, is specially, and the difference of the Hybrid Heating pattern of different band steel flakiness ratio couplings is that ratio heating mode is wherein different from the ratio of normal heating pattern.
In specific implementation process, from multiple Hybrid Heating pattern, determine that the first Hybrid Heating pattern of mating with this band steel flakiness ratio can use the mode of matched and searched.Concrete, the data source of matched and searched comes from historical data analysis result.
Specifically, correlation analysis is carried out according to band steel in annealing furnace band steel flakiness ratio and original normal heating pattern and original ratio heating mode; And according to the history data collection of the bent situation of the different size wooden dipper in start and stop Che Lu district to wooden dipper song risk and specification dependency.Thus the different normal heating patterns corresponding to band steel flakiness ratio and the blending ratio of ratio heating mode are determined in analysis, thus make the different power stage curves required for band steel flakiness ratio, to form different Hybrid Heating patterns.
Hybrid Heating patterns corresponding different to band steel flakiness ratios different in this programme below, be illustrated, but be not used in restriction the present invention: such as, band steel flakiness ratio is 3000, and corresponding Hybrid Heating pattern is assumed to: 50% ratio heating mode and 50% normal heating pattern; Band steel flakiness ratio is 2500, and corresponding Hybrid Heating pattern is assumed to: 70% ratio heating mode and 30% normal heating pattern; Band steel flakiness ratio is 3500, and corresponding Hybrid Heating pattern supposition is set as: 30% ratio heating mode and 70% normal heating pattern.Other often plant the equal corresponding a kind of Hybrid Heating pattern of band steel flakiness ratio, do not carry out exhaustive.And in specific implementation process; be with steel flakiness ratios to used blending ratio numerical value only for illustrating for aforementioned three kinds; as long as along with the change of band steel flakiness ratio; in Hybrid Heating pattern, the change of the blending ratio of ratio heating mode and normal heating pattern meets the variation tendency in above-mentioned citing, all belongs in scope.
If, with the Hybrid Heating pattern determined be: the ratio of 50% normal heating pattern and 50% ratio heating mode is mixed into example, often row burner add thermal output with reference to shown in following table 4.
Under table 4.50% normal heating pattern+50% ratio heating mode often row burner add thermal output
P 0 3 8 12 18 24 30 36 42 47 52 57 62 67 71 76 81 86 90 95 100
AO 0 15 22 29 35 40 45 49 54 58 74 66 70 73 77 81 85 89 92 96 100
AN 0 12 20 27 33 38 43 48 52 57 72 65 69 73 77 81 84 88 92 96 100
AM 0 10 16 25 31 37 42 47 51 56 71 64 68 72 76 80 84 88 92 96 100
AL 0 8 16 23 29 35 40 45 50 54 69 63 67 71 75 79 84 88 92 96 100
AK 0 5 14 21 27 33 39 44 49 53 67 62 66 70 75 79 83 87 92 96 100
AJ 0 2 11 18 25 31 36 42 47 52 64 61 65 69 74 78 83 87 91 96 100
AI 0 0 7 15 22 28 34 40 45 50 61 59 64 68 73 77 82 86 91 95 100
AH 0 0 4 12 19 26 32 37 43 48 58 58 62 67 72 77 81 86 91 95 100
AG 0 0 0 9 16 23 29 35 41 46 53 56 61 66 71 76 81 85 90 95 100
AF 0 0 0 5 13 20 26 32 38 44 47 54 59 65 70 75 80 85 90 95 100
AE 0 0 0 2 10 17 24 30 36 42 42 53 58 63 68 74 79 84 80 95 100
AD 0 0 0 0 7 14 21 28 34 40 34 51 57 62 67 73 78 84 89 95 100
AC 0 0 0 0 3 11 18 25 31 38 25 49 55 61 66 72 77 83 89 94 100
AB 0 0 0 0 0 7 15 22 29 35 12 47 53 59 65 71 77 82 88 94 100
AA 0 0 0 0 0 4 12 19 26 33 0 45 51 57 63 70 76 82 88 94 100
Such as, the Hybrid Heating pattern determined is that normal heating pattern is when mixing with other scale of ratio heating mode, those skilled in the art can according to draw the enforcement principle adding thermal output of the often row burner shown in table 4 know other ratios mixing under add thermal output, succinct in order to specification sheets, repeats no more herein.
Performing S104 after execution S103: after until band, steel enters annealing furnace district, according in the first power stage curve adjustment annealing furnace district of the first Hybrid Heating pattern often row burner add thermal output.Wherein, the power stage curve that multiple Hybrid Heating pattern is corresponding is different.
The second judged result: if the first judged result shows that this band steel flakiness ratio is less than the lower value of the first flakiness ratio scope, automatically switch to ratio heating mode; After band steel enters annealing furnace district, control often row burner and heat with the thermal output that adds identical each other.Concrete, namely control burner and heat according to the power stage curve of ratio heating mode, make often row burner correspond to the correspondence shown in table 3 and add thermal output.
The third judged result: if the first judged result shows belt steel thickness than the higher limit being greater than the first flakiness ratio scope, automatically switch to normal heating pattern; After band steel enters annealing furnace district, control burner and heat according to default increase trend.Concrete, namely control burner and heat according to the power stage curve of normal heating pattern, often row burner is corresponded to and shown in table 2, adds thermal output.
In order to determine more adaptively with current strip steel specification to add thermal output, the thickness factor is increased in the embodiment of the present invention, thus product line heating output control method moves back in the company that the embodiment of the present invention provides, after execution S102, also comprise the steps: before judging that band steel flakiness ratio is whether within the scope of the first flakiness ratio, the method also comprises: judge to be with the belt steel thickness of steel whether to be greater than the first thickness threshold value, obtain the second judged result; When the second judged result is for being, after band steel enters described annealing furnace district, controls often row burner and heating with the thermal output that adds identical each other.Namely control burner to heat according to the power stage curve of ratio heating mode, make to add thermal output shown in the corresponding table 3 of every row burner.
In specific implementation process, the first thickness threshold value sets according to practical situation, and preferably, the first thickness threshold setting is 0.35mm.
By technique scheme, thus improve the temperature in heating zone 1,2 district in annealing furnace district as far as possible, the unrelieved stress after release cold working, band steel can be allowed fully to contact with roller.
Further, on the basis of continuing to use previous embodiment, often row burner in the first power stage curve adjustment annealing furnace district according to the first Hybrid Heating pattern add thermal output before, technical solution of the present invention also comprises the steps: to be optimized the first power stage curve according to current hourly output of producing band steel, makes the first power stage slope of a curve relevant to hourly output.
Concrete, carry out citing description to hourly output to the power stage curve after power stage curve is optimized below, illustrate hourly output 75 tons, hourly output 37.5 tons, hourly output is less than and adds thermal output in 5 tons of these three kinds of situations.
Situation one: the heating zone output model of hourly output 75 tons is with reference to shown in figure 2, solid-line curve in Fig. 2 is corresponding in turn to the burner against band steel traffic direction, the concrete power stage curve being followed successively by the AO row shown in table 1, AN row, AM row, AL row, AK row, AJ row, AI row, AH row, AG row, AF row, AE row, AD row, AC row, AB row, AA row from left to right, and dashed curve is the power curve formed.
Situation two: the heating zone output model of hourly output 37.5 tons is with reference to shown in figure 3, same, solid-line curve in Fig. 3 is corresponding in turn to the burner against band steel traffic direction, the concrete power stage curve being followed successively by the AO row shown in table 1, AN row, AM row, AL row, AK row, AJ row, AI row, AH row, AG row, AF row, AE row, AD row, AC row, AB row, AA row from left to right, dashed curve is the power curve formed.
Situation three: the heating zone output model of hourly output 37.5 tons is with reference to shown in figure 4, same, solid-line curve in Fig. 4 is corresponding in turn to the burner against band steel traffic direction, the concrete power stage curve being followed successively by the AO row shown in table 1, AN row, AM row, AL row, AK row, AJ row, AI row, AH row, AG row, AF row, AE row, AD row, AC row, AB row, AA row from left to right, dashed curve is the power curve formed.
By above-mentioned optimal technical scheme, hourly output is utilized to add thermal output through row double optimization to heating zone regional, set up the relation of power stage curve and hourly output, thus can prevent from hourly output from jumping excessively causing heating zone 1 ~ 3 district temperature in annealing furnace to uprush, and then prevent chugging.
Often row burner in the power stage curve adjustment annealing furnace district according to Hybrid Heating pattern add thermal output after, the radiator tube power being positioned at least one burner of annealing furnace district heating zone inlet zone is greater than the radiator tube power of the burner being positioned at other regions, annealing furnace district.
Specifically, shown in reference table 1, the radiator tube power of AB ~ AF row burner of heating zone inlet zone is 140K, the radiator tube power 125KW of AG ~ AK row burner of heating zone exit region, the radiator tube power 100KW of AL ~ AO row burner of heating zone exit region, the radiator tube power of AB ~ AF row burner, higher than the radiator tube power of AG ~ AK row burner, is also greater than the radiator tube power of AL ~ AO row burner.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
Owing to have employed according to the current production band flakiness ratio determination ratio heating mode of steel and the blending ratio of normal heating pattern, and according to the proportion of composing blending ratio of the ratio heating mode determined and normal heating pattern, suitable adjustment is carried out to radiator tube, make heating zone add thermal output according to the specification Auto-matching of band steel, prevent Thin Strip Steel bent at the hot wooden dipper of heating zone.
Further, power stage curve is optimized according to hourly output owing to have employed, prevent heating zone 1 ~ 3 district temperature of the excessive annealing furnace caused of hourly output jump from uprushing, thus the increase achieved along with stove passband speed, belt steel thickness and width, the powertrace slope of the every row burner of heating zone increases gradually, the effective stable logical plate realizing band steel, improves set steady and leads to plate ability.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (7)

1. company moves back and produces a line heating output control method, and be applied to described company and move back in the Controlling System of producing line, it is characterized in that, described method comprises:
Band steel enter described company move back produce line annealing furnace district before, determine the band steel flakiness ratio of described band steel;
Judge described band steel flakiness ratio whether within the scope of the first flakiness ratio, obtain the first judged result;
If described first judged result is yes, then determine from multiple Hybrid Heating pattern and the first Hybrid Heating pattern that described band steel flakiness ratio is mated, wherein, often kind of described Hybrid Heating pattern is the ratio mixing of ratio heating mode and normal heating pattern, described ratio heating mode be often row burner to add thermal output identical all each other, described normal heating pattern be described burner add thermal output along band steel traffic direction in presetting increase trend;
Enter behind described annealing furnace district until described band steel, what often arrange described burner in annealing furnace district according to the first power stage curve adjustment of described first Hybrid Heating pattern adds thermal output, wherein, the power stage curve that multiple described Hybrid Heating pattern is corresponding is different.
2. connect as claimed in claim 1 to move back and produce line heating output control method, it is characterized in that, judge described band steel flakiness ratio whether within the scope of the first flakiness ratio described, before obtaining the first judged result, described method also comprises:
Judge whether the belt steel thickness of described band steel is greater than the first thickness threshold value, obtains the second judged result;
When described second judged result is for being, automatically switch to described ratio heating mode;
Enter behind described annealing furnace district until described band steel, control described often row burner and heat with the thermal output that adds identical each other.
3. connect as claimed in claim 2 to move back and produce line heating output control method, it is characterized in that, judge described band steel flakiness ratio whether within the scope of the first flakiness ratio described, after obtaining the first judged result, described method also comprises:
If described first judged result shows that described band steel flakiness ratio is less than the lower value of described first flakiness ratio scope, automatically switch to described ratio heating mode;
Enter behind described annealing furnace district until described band steel, control described often row burner and heat with the thermal output that adds identical each other.
4. connect as claimed in claim 3 to move back and produce line heating output control method, it is characterized in that, judge described band steel flakiness ratio whether within the scope of the first flakiness ratio described, after obtaining the first judged result, described method also comprises:
If described first judged result shows described belt steel thickness than the higher limit being greater than described first flakiness ratio scope, automatically switch to described normal heating pattern;
Enter behind described annealing furnace district until described band steel, control described burner and heat according to described default increase trend.
5. the company as described in claim arbitrary in claim 1-4 moves back and produces line heating output control method, it is characterized in that, often arrange in described annealing furnace district according to the first power stage curve adjustment of described first Hybrid Heating pattern described burner add thermal output before, described method also comprises:
Hourly output according to current production described band steel is optimized described first power stage curve, makes described first power stage slope of a curve relevant to described hourly output.
6. connect as claimed in claim 5 to move back and produce line heating output control method, it is characterized in that, described first flakiness ratio scope is 2000 ~ 4000.
7. connect as claimed in claim 5 to move back and produce line heating output control method, it is characterized in that, often arrange in described annealing furnace district according to the first power stage curve adjustment of described first Hybrid Heating pattern described burner add thermal output after, be positioned at described annealing furnace district heating zone inlet zone at least one described in the radiator tube power of burner be greater than the radiator tube power of the described burner being positioned at other regions, described annealing furnace district.
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CN110714116B (en) * 2019-11-05 2020-12-15 山东钢铁集团日照有限公司 Method for stopping in thin-specification strip steel annealing furnace for rapid production recovery
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CN111363910A (en) * 2020-03-03 2020-07-03 首钢京唐钢铁联合有限责任公司 Pulse type burner heating output control method and system
CN111363910B (en) * 2020-03-03 2021-11-19 首钢京唐钢铁联合有限责任公司 Pulse type burner heating output control method and system

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