CN102605166B - Equipment for measuring temperature of steel coil in top hat annealing furnace and using method of equipment - Google Patents
Equipment for measuring temperature of steel coil in top hat annealing furnace and using method of equipment Download PDFInfo
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- CN102605166B CN102605166B CN 201210088394 CN201210088394A CN102605166B CN 102605166 B CN102605166 B CN 102605166B CN 201210088394 CN201210088394 CN 201210088394 CN 201210088394 A CN201210088394 A CN 201210088394A CN 102605166 B CN102605166 B CN 102605166B
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Abstract
The invention relates to equipment for measuring the temperature of a steel coil in a top hat annealing furnace and a using method of the equipment. The equipment consists of an edge insertion strip, a core insertion strip, thermocouple slots on the edge and core insertion strips, thermocouples, a non-paper recorder, thermocouple compensation lead wires, and a flexible thermocouple terminal connection tube. The two long edge sides of the outer side surfaces of the edge and core insertion strips are slope-shaped, and the cross sections formed by the sloped-shaped edge sides of the edge and core insertion strips are trapezoid. The using method of the equipment comprises the following steps: in strip steel coilling process, firstly inserting the core insertion strip into the steel coil, and enabling the outer side surface of the core insertion strip to face the outer normal of the steel coil; then inserting the edge insertion strip into the steel coil according to a temperature point arranged on the edge part of the steel coil, and enabling the outer side surface of the edge insertion strip to face the outer normal of the steel coil; when the steel coil enters the top hat annealing furnace, inserting the thermocouples into the edge and core insertion strips respectively; and after the steel coil is subjected to annealing, acquiring and processing data recorded by each channel of the non-paper recorder. The equipment can perform validation and model modification on a top hat furnace model, and can dynamically track the temperature rise of the steel coil and atmosphere in the furnace in the whole process of annealing.
Description
Technical field
The present invention relates to temperature measuring equipment and using method thereof, specifically belong to temperature measuring equipment and using method thereof for coil of strip in the bell type annealing furnace.
Background technology
Existing cover annealing equipment is to the thermal treatment of annealing of cold rolled strip coil of strip, makes mainly that coil of strip hot and cold point in annealing process reaches the requirement of annealing process system in the stove, to obtain mechanical property and the qualified strip product of surface property.The annealing process system mainly relies on the bell furnace calculated with mathematical model to obtain, there is not at present a kind of effective means of testing not only to guarantee strip surface quality as yet but also can accurately measures and dynamically follow the tracks of the thermal history of the inner each point of cover annealing coil of strip, therefore can't obtain reliable experimental data revises and validation verification the bell furnace model, so just be difficult to guarantee that annealing coil anneals according to the annealing process system of bell furnace model specification, can't determine whether the cold and hot point of coil of strip reaches the annealing process requirement, finally be difficult to guarantee annealing back product performance.In addition, the mechanical property of coil of strip and surface property detected result or crystalline phase analytical results were adjusted after the annealing process system can only rely on and anneal, and annealing process system optimization cycle is long, cost is high, influences bell furnace production efficiency.
At present coil of strip thermometric equipment therefor often exerts an influence to strip quality in the thermometric process because its structure and shape exist unreasonablely in the bell type annealing furnace.Especially used cutting mostly is the square-section in the interior coil of strip temperature measuring equipment of bell type annealing furnace, and uncoiling is reclaimed in the process of transplanting a cutting after laying cutting and coil of strip to finish furnace annealing in coil of strip, and cutting limit portion often scratches belt steel surface, influences strip surface quality.In the time of again in cutting coil of strip going along with circumnutates into coil of strip, because the rectangular edges portion that the tension force effect of curling is transplanted a cutting makes belt steel surface produce folding line; Coil of strip in bell furnace in the annealing process because heating phase and cooling stages coil of strip internal-external temperature difference are bigger, coil of strip tightens up or loosens and makes mutual extrusion between band steel layer and the layer, cause and transplant a cutting the two-layer band steel directly contact and adjacent which floor and be with the steel folding line more serious, after the Abrollhaspel uncoiling, need folding line is partly cut, lumber recovery is reduced.
And, cutting in the conventional bell type annealing furnace in the coil of strip thermometric equipment therefor, because it welds the formed intermediate gap in back as the thermopair slot with two block length steel plate two ends, so after thermopair is inserted slot, thermopair fails all to occupy described slit, the general sub-fraction that only occupies described slit, like this, the residue slit will be filled by the high-temperature atmosphere of strong convection in the bell furnace, thereby cause thermopair influenced by described atmosphere temperature and can not accurately reflect the actual temperature of coil of strip measuring point, reduce the accuracy of temperature measuring equipment.
Summary of the invention
The invention reside at coil of strip thermometric equipment therefor in the present bell type annealing furnace, because its structure and shape is unreasonable, often cause transplanting a cutting belt steel surface is scratched, belt steel surface is produced creases, thereby influence the quality of belt steel surface, reduce problems such as lumber recovery, provide a kind of structure and shape reasonable, can improve the coil of strip surface quality, reduce scrap rate, and can dynamically follow the tracks of coil of strip internal temperature in the existing cover annealing process, monitoring data is accurate, be the correction of bell furnace model and validation verification, for belt steel surface oxidation defect in the cover annealing is analyzed, and the temperature measuring equipment and the using method thereof that are used for coil of strip in the bell type annealing furnace that the authentic data support is provided for the optimization of batch annealing system.
Realize the measure of above-mentioned purpose:
The temperature measuring equipment that is used for coil of strip in the bell type annealing furnace, it is taken over by the thermopair slot, thermopair, recording instrument without paper, compensation lead of thermocouple, the flexible thermocouple terminal that respectively are provided with in the cutting of limit portion, core cutting, the cutting of limit portion and the core cutting and forms, it is characterized in that: limit portion transplants a cutting and two long sides of core cutting outer side separately are slope shape, and formed shape of cross section is trapezoidal shape.
It is characterized in that: the shape of cross section that limit portion transplants a cutting and core is transplanted a cutting separately also is crescent moon.
The using method that is used for the temperature measuring equipment of coil of strip in the bell type annealing furnace, its step:
1) according to the set point for measuring temperature of coil of strip, in the strip coiling process, coil of strip is inserted in the core cutting, and make the outer side of core cutting towards the outer normal of coil of strip;
2) along with the increase of coil of strip coil diameter, according to steel flanging part established temperature measurement point, coil of strip is inserted in the cutting of limit portion, and make the outer side of limit portion cutting towards the outer normal of coil of strip;
3) after coil of strip enters bell furnace, in the cutting of limit portion and core cutting thermopair slot separately, insert thermopair; In the time a plurality of coil of strip will being measured simultaneously, begin up to insert respectively thermopair according to routine from the coil of strip of bottom;
4), after bell furnace is carried out airtight test, start recording instrument without paper, and the beginning image data;
5) after coil annealing is finished in the bell furnace, the data of each passage record of above-mentioned recording instrument without paper are handled by capture card importing computer, obtained the dynamic temperature rise curve of steel flanging part, core and furnace atmosphere in the bell furnace.
It is characterized in that: core is transplanted a cutting and is inserted one as required at least.
It is characterized in that: limit portion transplants a cutting and core is transplanted a cutting to be placed on and made its thermopair that inserts in thermopair slot separately not by the crushing place.
The present invention compared with prior art has following characteristics:
(1) adopts this method, can be for the bell furnace engineering provide FAT (Factory Acceptance Test) test, and provide authentic data to support for bell furnace model validation verification and model correction, for belt steel surface oxidation defect analysis in the cover annealing and the optimization of batch annealing system, cold rolling new steel grade, new process development;
(2) adopt the thermocouple temperature measurement scope of customization wide, measurable temperature range is 0-1000 ℃; The hyperchannel recording instrument without paper can be realized multi-point data acquisition.Thereby realize the cold and hot point of coil of strip in the bell furnace stove and the dynamic temperature rise of the whole process of furnace atmosphere in annealing process are followed the tracks of;
(3) cutting of the cold and hot point of coil of strip place is arranged in radially same, be beneficial to thermopair and bury even operation, thermopair behind the plug-in mounting is in the diversion space of convection current plate diversion trench and the institute's coil of strip upper surface of surveying formation, avoids when the coil of strip stacking hangs the convection current plate, breaking thermopair, safe and reliable;
(4) can change according to the research and development needs and transplant a cutting and the size of slot, and can follow the tracks of the temperature rise of the inner arbitrfary point of coil of strip in the bell furnace stove by adjusting the position of transplanting a cutting in coil of strip, flexible operation, cost is low.And because the thermopair slot adopts the monoblock steel plate according to the point position processing and fabricating, the strong convection high-temperature atmosphere makes the thermopair measured temperature can accurately reflect the true temperature of coil of strip measuring point to the influence of thermocouple temperature measurement end in the bell furnace thereby reduced;
(5) can reduce the coil of strip surface significantly has and transplants a cutting creasing and scratching of causing, each is transplanted a cutting can cut off the steel plate of about 7.5 meters length less at least on every coil volume, thereby significantly improved lumber recovery, has significant effect for reducing production costs.
Description of drawings
Fig. 1 is structural representation of the present invention
Fig. 2 transplants a cutting for limit portion among Fig. 1 or core cutting cross section is trapezoidal structural representation
Fig. 3 transplants a cutting for limit portion among Fig. 1 or core cutting cross section is the structural representation of crescent moon
Among the figure: 1-limit portion transplants a cutting, and 2-core is transplanted a cutting, 3-thermopair slot, and 4-thermopair, 5-recording instrument without paper, 6-compensation lead of thermocouple, 7-flexible thermocouple terminal is taken over.
Embodiment
Below in conjunction with accompanying drawing apparatus of the present invention are described in detail:
Temperature measuring equipment for coil of strip in the bell type annealing furnace: it is taken over 7 by the thermopair slot 3, thermopair 4, recording instrument without paper 5, compensation lead of thermocouple 6, the flexible thermocouple terminal that respectively are provided with in limit portion cutting 1, core cutting 2, the cutting 1 of limit portion and the core cutting 2 and forms.Its two long sides with the cutting 1 of limit portion and core cutting 2 outer side separately are processed as slope shape, and the width on slope is no less than 20 millimeters, and formed shape of cross section is trapezoidal shape; Also can be with its shape of cross section for being processed as crescent moon.
Below be the use-case that makes of this device:
Embodiment 1
The using method that is used for the temperature measuring equipment of coil of strip in the bell type annealing furnace, its step:
1) according to the set point for measuring temperature of coil of strip, in the strip coiling process, a core is transplanted a cutting 2 thermopairs 4 that insert coil of strip not by the crushing place, and make the outer side of core cutting 2 towards the outer normal of coil of strip; The degree of depth that coil of strips are inserted in core cutting 2 are 1/2nd places of coil of strip width, and the width of the coil of strip of surveying is 1000 millimeters, so the degree of depth that coil of strips are inserted in core cutting 2 are 500 millimeters places;
2) along with the increase of coil of strip coil diameter, according to steel flanging part established temperature measurement point, 1 thermopair 4 that inserts coil of strip is transplanted a cutting not by the crushing place by a limit portion, and make the outer side of limit portion cutting 1 towards the outer normal of coil of strip; The degree of depth that coil of strip is inserted in limit portion cutting 1 is 65 millimeters places;
3) after coil of strip enters bell furnace, in the thermopair slot 3 separately of the cutting 1 of limit portion and core cutting 2, insert thermopair 4; In the time a plurality of coil of strip will being measured simultaneously, begin up to insert respectively thermopair 4 according to routine from the coil of strip of bottom;
4) bell furnace is carried out airtight test, after airtight test, start recording instrument without paper 5, and the beginning image data;
5) treat that coil annealing is finished in the bell furnace after, the data of above-mentioned recording instrument without paper 5 each passages record are imported computer by capture card, institute's image data is handled, obtain the dynamic temperature rise curve of steel flanging part, core and furnace atmosphere in the bell furnace.
When being a plurality of coil of strips when simultaneously tested, carry out like this according to the method described above, and adopt the convection current straight sheet pile to get final product well.
Embodiment 2
The using method that is used for the temperature measuring equipment of coil of strip in the bell type annealing furnace, its step:
1) according to the set point for measuring temperature of coil of strip, in the steel band coiling process, two cores is transplanted a cutting 2 thermopairs 4 that insert coil of strip not by the crushing place, and make the outer side of core cutting 2 towards the outer normal of coil of strip; The degree of depth that coil of strips are inserted in one of them core cutting 2 are 2/3rds places of coil of strip width, and the width of the coil of strip of surveying is 1020 millimeters, so the degree of depth that coil of strips are inserted in core cutting 2 are 680 millimeters places; The degree of depth that coil of strips are inserted in another core cutting 2 are 1/2nd places of coil of strip width, so the degree of depth that coil of strips are inserted in core cutting 2 are 510 millimeters places;
2) along with the increase of coil of strip coil diameter, according to steel flanging part established temperature measurement point, 1 thermopair 4 that inserts coil of strip is transplanted a cutting not by the crushing place by a limit portion, and make the outer side of limit portion cutting 1 towards the outer normal of coil of strip; The degree of depth that coil of strip is inserted in limit portion cutting 1 is 60 millimeters places;
3) after coil of strip enters bell furnace, in the thermopair slot 3 separately of the cutting 1 of limit portion and core cutting 2, insert thermopair 4; In the time a plurality of coil of strip will being measured simultaneously, begin up to insert respectively thermopair 4 according to routine from the coil of strip of bottom;
4) bell furnace is carried out airtight test, after airtight test, start aforesaid recording instrument without paper 5, and the beginning image data;
5) after coil annealing was finished in the bell furnace, the data that above-mentioned recording instrument without paper 5 each passage are recorded imported computer by capture card, and institute's image data is handled, and obtain the dynamic temperature rise curve of steel flanging part, core and furnace atmosphere in the bell furnace.
When being a plurality of coil of strips when simultaneously tested, carry out like this according to the method described above, and adopt the convection current straight sheet pile to get final product well.
The using method that is used for the temperature measuring equipment of coil of strip in the bell type annealing furnace, its step:
1) according to the set point for measuring temperature of coil of strip, in the steel band coiling process, two cores is transplanted a cutting 2 thermopairs 4 that insert coil of strip not by the crushing place, and make the outer side of core cutting 2 towards the outer normal of coil of strip; The degree of depth that coil of strips are inserted in one of them core cutting 2 are 3/4ths places of coil of strip width, and the width of the coil of strip of surveying is 1050 millimeters, so the degree of depth that coil of strips are inserted in core cutting 2 are 788 millimeters places; The degree of depth that coil of strips are inserted in another core cutting 2 are 2/3rds places of coil of strip width, so the degree of depth that coil of strips are inserted in core cutting 2 are 700 millimeters places;
2) along with the increase of coil of strip coil diameter, according to steel flanging part established temperature measurement point, 1 thermopair 4 that inserts coil of strip is transplanted a cutting not by the crushing place by two limit portions, and make the outer side of limit portion cutting 1 towards the outer normal of coil of strip; The degree of depth that coil of strip is inserted in one of them limit portion cutting 1 is 65 millimeters places, and the degree of depth that coil of strip is inserted in another limit portion cutting 1 is 70 millimeters places;
3) after coil of strip enters bell furnace, in the thermopair slot 3 separately of the cutting 1 of limit portion and core cutting 2, insert thermopair 4; In the time will measuring a plurality of coil of strip simultaneously, begin up to insert thermopair 4 respectively according to routine from the coil of strip of bottom and get final product;
4) bell furnace is carried out airtight test, after airtight test, start aforesaid recording instrument without paper 5, and the beginning image data;
5) after coil annealing was finished in the bell furnace, the data that above-mentioned recording instrument without paper 5 each passage are recorded imported computer by capture card, and institute's image data is handled, and obtain the dynamic temperature rise curve of steel flanging part, core and furnace atmosphere in the bell furnace.
When being a plurality of coil of strips when simultaneously tested, carry out like this according to the method described above, and adopt the convection current sheetpile to pile up neatly to get final product.
When being a plurality of coil of strips when simultaneously tested, carry out like this according to the method described above, and adopt the convection current sheetpile to pile up neatly to get final product.
Coil of strip is when uncoiling, situation through above-described embodiment is used checks, find that the two-layer band steel that directly contacts with cutting has obvious folding line, and near which floor the band steel the described two-layer band steel do not had folding line and produced, and each transplants a cutting the steel plate that need not to cut off at least 7.5 meters length in each coil volume; According to two cutting meters, then each coil of strip is then cut about 15 meters long steel plates at least less, and lumber recovery is significantly improved; Because the thermopair slot that processing is transplanted a cutting according to the coil of strip point position, thereby reduced the influence of the interior strong convection high-temperature atmosphere of bell furnace to the thermocouple temperature measurement end, make the thermopair measured temperature can accurately reflect the true temperature of coil of strip measuring point, improved the accuracy of temperature measuring equipment.
Claims (5)
1. the temperature measuring equipment that is used for coil of strip in the bell type annealing furnace, it is taken over by the thermopair slot, thermopair, recording instrument without paper, compensation lead of thermocouple, the flexible thermocouple terminal that respectively are provided with in the cutting of limit portion, core cutting, the cutting of limit portion and the core cutting and forms, it is characterized in that: limit portion transplants a cutting and two long sides of core cutting outer side separately are slope shape, and formed shape of cross section is trapezoidal shape.
2. the temperature measuring equipment for coil of strip in the bell type annealing furnace as claimed in claim 1, it is characterized in that: the shape of cross section of described trapezoidal shape replaces with crescent moon.
3. the using method of the temperature measuring equipment for coil of strip in the bell type annealing furnace as claimed in claim 1, its step:
1) according to the set point for measuring temperature of coil of strip, in the strip coiling process, coil of strip is inserted in the core cutting, and make the outer side of core cutting towards the outer normal of coil of strip;
2) along with the increase of coil of strip coil diameter, according to steel flanging part established temperature measurement point, coil of strip is inserted in the cutting of limit portion, and make the outer side of limit portion cutting towards the outer normal of coil of strip;
3) after coil of strip enters bell furnace, in the cutting of limit portion and core cutting thermopair slot separately, insert thermopair; In the time a plurality of coil of strip will being measured simultaneously, begin up to insert respectively thermopair according to routine from the coil of strip of bottom;
4), after bell furnace is carried out airtight test, start recording instrument without paper, and the beginning image data;
5) after coil annealing is finished in the bell furnace, the data of each passage record of above-mentioned recording instrument without paper are handled by capture card importing computer, obtained the dynamic temperature rise curve of steel flanging part, core and furnace atmosphere in the bell furnace.
4. the using method of the temperature measuring equipment for coil of strip in the bell type annealing furnace as claimed in claim 3, it is characterized in that: core is transplanted a cutting and is inserted one as required at least.
5. the using method of the temperature measuring equipment for coil of strip in the bell type annealing furnace as claimed in claim 3 is characterized in that: limit portion transplants a cutting and core is transplanted a cutting to be placed on and made its thermopair that inserts in thermopair slot separately not by the crushing place.
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| CN 201210088394 CN102605166B (en) | 2012-03-30 | 2012-03-30 | Equipment for measuring temperature of steel coil in top hat annealing furnace and using method of equipment |
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| CN 201210088394 CN102605166B (en) | 2012-03-30 | 2012-03-30 | Equipment for measuring temperature of steel coil in top hat annealing furnace and using method of equipment |
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| CN102605166B true CN102605166B (en) | 2013-07-17 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998021B (en) * | 2012-11-30 | 2015-09-16 | 中冶南方(武汉)威仕工业炉有限公司 | Prevention bell-type furnace coil base sewage draining exit is utilized to measure the apparatus and method of the cold hot(test)-spot temperature of coil of strip |
| CN102994736B (en) * | 2012-12-11 | 2014-02-19 | 中冶南方(武汉)威仕工业炉有限公司 | Correction method for annealing model of bell-type furnace |
| CN103278253A (en) * | 2013-05-07 | 2013-09-04 | 山西太钢不锈钢股份有限公司 | Thermocouple buried validation method of bell-type furnace stainless steel annealing effect |
| US9757784B2 (en) * | 2015-03-10 | 2017-09-12 | Ford Global Technologies, Llc | Temperature measurement device for metal sheet |
| CN106269919B (en) * | 2016-08-30 | 2018-05-04 | 东北大学 | A kind of method for detecting metal sheet band operation of rolling deformed area temperature |
| CN109357777B (en) * | 2018-12-12 | 2024-05-14 | 安徽工业大学 | Built-in bell-type furnace temperature acquisition system |
| CN109554530B (en) * | 2018-12-12 | 2020-05-12 | 安徽工业大学 | Temperature acquisition method for built-in bell-type furnace |
| CN114088230A (en) * | 2021-11-18 | 2022-02-25 | 中铝瑞闽股份有限公司 | Air cushion type continuous heat treatment line strip load temperature measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5382093A (en) * | 1993-02-22 | 1995-01-17 | Gay Engineering & Sales Co., Inc. | Removable temperature measuring device |
| CN101250620A (en) * | 2008-03-31 | 2008-08-27 | 武汉钢铁(集团)公司 | Method for avoiding cold rolled strip bonding and bonding-free hood-type annealing furnace |
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2012
- 2012-03-30 CN CN 201210088394 patent/CN102605166B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5382093A (en) * | 1993-02-22 | 1995-01-17 | Gay Engineering & Sales Co., Inc. | Removable temperature measuring device |
| CN101250620A (en) * | 2008-03-31 | 2008-08-27 | 武汉钢铁(集团)公司 | Method for avoiding cold rolled strip bonding and bonding-free hood-type annealing furnace |
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