CN101619384B - Steel burning method for automatic stepping of walking beam furnace - Google Patents
Steel burning method for automatic stepping of walking beam furnace Download PDFInfo
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- CN101619384B CN101619384B CN200810012149A CN200810012149A CN101619384B CN 101619384 B CN101619384 B CN 101619384B CN 200810012149 A CN200810012149 A CN 200810012149A CN 200810012149 A CN200810012149 A CN 200810012149A CN 101619384 B CN101619384 B CN 101619384B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010079 rubber tapping Methods 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 7
- 240000006909 Tilia x europaea Species 0.000 description 7
- 235000011941 Tilia x europaea Nutrition 0.000 description 7
- 239000004571 lime Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000004484 Briquette Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
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Abstract
The invention discloses a steel burning method of a walking beam type heating furnace, wherein a walking beam is mainly in an operation state and an idle state in the steel burning process, and the walking beam starts to automatically lift and move at a high position and a low position when entering the idle state; when the walking beam enters the operation state, the automatic lifting motion of the high position and the low position stops. According to the invention, the walking beam automatically steps at high and low positions to burn steel in the intermittent time before tapping, and simultaneously the stay time of the walking beam at the high and low positions is reasonably set, so that the serious watermark temperature difference caused by overlong stay time of the plate blank on the fixed beam can be effectively eliminated, and the requirements of greatly improving the size precision of products, the rolling stability of a finishing mill and the performance of special products such as silicon steel and the like are met.
Description
Technical field
The present invention relates to the hot rolling slab technical field of heating, especially a kind of burning steel method of walking beam furnace.
Background technology
At present, walking beam furnace walking beam in process of burning steel mainly is in two states, and a kind of is the job state that is in dress steel, walking beam normal circulation, the contrary circulation of walking beam and tapping; A kind of is the idle state that is in low level (smallest limit position).Because slab for a long time contacts with deciding beam in the process of heating, make appearance temperature difference at the bottom of the slab and produce watermark, cause the board briquette inequality, production and quality product are caused following influence:
1) board briquette is uneven, in the operation of rolling, is prone to rolling shakiness;
2) influence the width and the thickness and precision index of product;
3) performance of special steel grades such as silicon steel electromagnetic performance is had very seriously influence.
Summary of the invention
The object of the present invention is to provide the burning steel method of the moving beam automatic stepping of a kind of walking beam furnace; Solve slab in heat-processed because of long-time with decide beam and contact the problem that produces watermark; So that make slab heating temperature even, better for improving the product size control accuracy, improving rolling stability and improve product performance condition is provided.
The objective of the invention is to realize like this, the burning steel method of the moving beam automatic stepping of a kind of walking beam furnace, walking beam mainly is in job state and idle state in process of burning steel, when walking beam gets into idle state, begins high low level automatic lifting motion; High low level automatic lifting motion stops when walking beam gets into job state.
In order to eliminate the watermark temperature difference that slab produces deciding the beam overstand effectively, can when walking beam is elevated to high low level, stop time-delay for some time, and will be longer than stop delay time at low level in the elevated time-delay residence time.
The present invention the basic dress of original process furnace, tapping, walking beam just, on the contrary basis of circulation function; Interpolation automatic stepping function; Make in its quiescent interval before tapping walking beam carry out high low level automatic stepping and burn steel; Do not influence normal dress, tapping, walking beam just, contrary circulation function; Reasonably set the residence time of walking beam simultaneously in high and low position; Can eliminate slab effectively owing to producing the serious watermark temperature difference deciding the beam overstand, also be unlikely to stop (contact) overlong time and produce the serious watermark temperature difference, satisfy the requirement that increases substantially product size precision, raising finishing mill rolling stability and improve special kinds product performance such as silicon steel significantly with moving beam in a high position.
Description of drawings
Fig. 1 is the burning steel method control flow chart of the moving beam automatic stepping of walking beam furnace of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Existing is example with two big tapping modes of intersecting of process furnace employing, as 1
#Stove goes out 3～5 blocks of steel, 2
#Go out 3～5 blocks of steel, 1
#Stove goes out 3～5 blocks of steel again ... So big intersection circulation tapping, when a stove tapping, another stove is in idle condition, and this stove has the time enough function of marking time in 9～15 minutes time like this, to eliminate the slab watermark effectively.
As shown in Figure 1; In case process furnace does not have dress, tapping and walking beam action, walking beam begins to get into idle timing time, when do not have dress, tapping and walking beam action in the time at a second (time can be set by the technologist); Walking beam begins to rise; Rise to limes superiors position (high position) before at walking beam, if dress, extractor moves then walking beam stops action, walking beam drops to smallest limit to be carried out and to take on the steel action; Or walking beam has other action during this period, and then walking beam stops to rise and carries out the action that requires.If dress, extractor do not have action and walking beam not to have other action, then walking beam rises to the limes superiors position, and walking beam begins to stop time-delay in the limes superiors position and burns steel b second (time can be set by the technologist); If in limes superiors position stop process; Take on the motor-driven work of steel, then walking beam drops to the smallest limit position immediately, carries out the steel task that takes on; If the action of walking beam requirement is then carried out in the walking beam action immediately.If dress, extractor and walking beam be action not, then walking beam stops b after second in the limes superiors position, and beginning descends automatically, carries out the action of corresponding dress, tapping action and walking beam requirement if same dress, extractor action or walking beam have other action.If not dress, extractor action and other action of walking beam; Then walking beam drops to smallest limit position (low level); In a scanning period of program, adorn the not action of extractor, walking beam; Then open again to make and call the walking beam sub-routine of marking time, walking beam begins to get into idle timing time again ... The next one cycle of marking time begins.
Because slab is in that to decide on the beam residence time longer relatively under the walking beam job state; Want with slab with decide the beam length time and contact the watermark that is produced and eliminate; The time (limes superiors position residence time b) on the moving beam of resting in the process that the walking beam idle state is marked time up and down is longer than and rests on the time of deciding on the beam (the smallest limit position residence time a); Simultaneously also to reasonably set slab and decide beam elevated residence time b; Avoid slab to produce watermark at moving beam overstand, general walking beam is that 2～5 times of low level are advisable in the elevated time-delay residence time.The fact also is so, through test of many times demonstration, 1
#Stove goes out 3～5 blocks of steel, 2
#The stove burning steel of marking time, residence time b is set at 3 minutes to slab in the limes superiors position, and residence time a is set at 1 minute in the smallest limit position.So, two process furnace can be realized the big tapping and the burning steel of marking time of intersecting.Best from the actual production effect.
The present invention also should take into account the following aspects in the working control process:
1) it is chain original-pack extractor action sequence to be added the walking beam automatic stepping, and it is preferential to guarantee to take on steel, and the walking beam automatic stepping is the subsidiary function condition;
2) it is chain former walking beam normal circulation, contrary circulation and manual activity sequential to be added the walking beam automatic stepping, guarantees that walking beam normal circulation, contrary circulation and manual activity are preferential, and the walking beam automatic stepping is subsidiary conditions;
3) in program, add walking beam automatic stepping blockette, and with the idle vacant time of walking beam be the condition call subroutine, realize the may command automatic stepping;
4) realized the adjustable of the sequential of marking time of walking beam, can adjust walking beam at upper and lower limit position residence time a, b, with the adjustment rhythm of marking time according to processing requirement.
Claims (1)
1. the burning steel method of the moving beam automatic stepping of walking beam furnace is moved beam and mainly is in job state and idle state in process of burning steel, it is characterized in that: process furnace adopts the big tapping mode of intersecting, and has two process furnace to be respectively 1
#, 2
#Stove, 1
#Stove goes out 3 ~ 5 blocks of steel, 2
#Go out 3 ~ 5 blocks of steel, when a stove tapping, another stove is in idle condition; , moving beam begins high low level automatic lifting motion when getting into idle state; High low level automatic lifting motion stops when moving beam gets into job state; The action of said moving beam job state has precedence over the action of idle state; Said moving beam all stops time-delay for some time when being elevated to high low level; Said moving beam is 2 ~ 5 times of low level in the elevated time-delay residence time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810012149A CN101619384B (en) | 2008-06-30 | 2008-06-30 | Steel burning method for automatic stepping of walking beam furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810012149A CN101619384B (en) | 2008-06-30 | 2008-06-30 | Steel burning method for automatic stepping of walking beam furnace |
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| Publication Number | Publication Date |
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| CN101619384A CN101619384A (en) | 2010-01-06 |
| CN101619384B true CN101619384B (en) | 2012-09-26 |
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| CN200810012149A Active CN101619384B (en) | 2008-06-30 | 2008-06-30 | Steel burning method for automatic stepping of walking beam furnace |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234715B (en) * | 2010-04-26 | 2013-01-02 | 宝山钢铁股份有限公司 | Cross steel tapping control method for blooming furnace group |
| CN104289532B (en) * | 2013-07-19 | 2016-06-22 | 上海宝信软件股份有限公司 | Strip steel watermark point temperature-controlled process |
| CN105219947B (en) * | 2014-06-30 | 2018-03-09 | 宝山钢铁股份有限公司 | Slab spill-out sequential control method when step rate is marked time |
| CN105363796B (en) * | 2014-08-15 | 2017-06-06 | 宝山钢铁股份有限公司 | The control method for rolling that the watermark of heating furnace step rate influences on finished product thickness can be mitigated |
| CN112139252A (en) * | 2020-09-01 | 2020-12-29 | 南京钢铁股份有限公司 | Rolled piece thickness optimization control method for heated water beam mark |
| CN115558758B (en) * | 2022-10-13 | 2024-07-26 | 张家港扬子江冷轧板有限公司 | Non-oriented silicon steel and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1840252A (en) * | 2005-03-28 | 2006-10-04 | 鞍钢集团新钢铁有限责任公司 | Production process of continuous-casting tandem-rolling coiled sheet of medium thick plate |
| CN1864878A (en) * | 2005-05-20 | 2006-11-22 | 中冶东方工程技术有限公司 | Compact medium-width strip steel production process |
-
2008
- 2008-06-30 CN CN200810012149A patent/CN101619384B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1840252A (en) * | 2005-03-28 | 2006-10-04 | 鞍钢集团新钢铁有限责任公司 | Production process of continuous-casting tandem-rolling coiled sheet of medium thick plate |
| CN1864878A (en) * | 2005-05-20 | 2006-11-22 | 中冶东方工程技术有限公司 | Compact medium-width strip steel production process |
Non-Patent Citations (1)
| Title |
|---|
| 机械工程学会热处理学会《热处理手册》编委会.第6章 热处理燃料炉.《热处理手册》.机械工业出版社,2001,第3卷345. * |
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| CN101619384A (en) | 2010-01-06 |
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