CN1410189A - Accurate measuring method of casted blank surface temperature of continuous casting secondary cold region - Google Patents
Accurate measuring method of casted blank surface temperature of continuous casting secondary cold region Download PDFInfo
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- CN1410189A CN1410189A CN 01141418 CN01141418A CN1410189A CN 1410189 A CN1410189 A CN 1410189A CN 01141418 CN01141418 CN 01141418 CN 01141418 A CN01141418 A CN 01141418A CN 1410189 A CN1410189 A CN 1410189A
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Abstract
A method for correctly measuring the surface temp. of casting blank in the secondary cooling region of conticasting includes continuously measuring the surface temp. at single point or multiple points by temp. sensor, and processing the temp. data by computer to find out the correct temp. in order to regulate the drawing speed and the flow of cooling water.
Description
Technical field
The present invention relates to field of metallurgy, relate in particular in a kind of continuous casting of molten steel process the accurate assay method of casting blank surface temperature between secondary cooling zone.
Background technology
At present, the basic continuous casting process that adopts during modern steel integrated complex produces, secondary cooling control is the important component part of continuous casting process.In casting process, (to be called for short two cold-zones) between secondary cooling zone interior strand institute dispersed heat accounts for strand in process of setting dissipated heat 60%, it directly influences the output and the quality of strand.Casting blank surface temperature is to regulate cooling water flow, control casting speed, determine an important parameter of the liquid core degree of depth.Running status and enforcement control automatically for understanding strand in the casting process need detect near the casting blank surface temperature crystallizer exit, fan-shaped section and the aligning point.
Generally be a method that adopts point to survey to the temperature measuring of continuous casting billet in the prior art, promptly with the contactless temperature-measuring instrument two cold-zones certain a bit on the surface temperature of discontinuous ground measurement strand.The temperature error of the casting billet surface that records of temp measuring method is very big like this, and, can not reflect strand whole temperature variations in two cold-zones of continuous casting, its reason is:
As everyone knows, continuous-cast blank is in the extreme temperatures of two cold-zones, casting billet surface can form moisture film, iron scale in the process of cooling, on casting billet surface, also can fill the air steam, the above-mentioned steam and the moisture film of casting billet surface, iron scale etc. make the method that adopts point to survey be difficult to accurately measure casting blank surface temperature.
In addition, want by the strand temperature of each key point in two cold-zones being done the understanding of system, the method of surveying by some thermometric bit by bit also is not all right, because strand its temperature is everywhere all the time all changing, temperature according to strand each point in two cold-zones of a survey is difficult to make the casting parameters that adapts with strand
Summary of the invention
The objective of the invention is to improve the deficiencies in the prior art, a kind of method that can continuously, accurately measure casting blank surface temperature at secondary cooling area for continuous casting simultaneously is provided.
For achieving the above object, the present invention takes following design:
This temp measuring method is made up of two parts, and the first is to the single-point of strand two cold-zones or the temp measuring method that measures its surface temperature continuously of multiple spot, and it two is that the temperature data of being surveyed is handled the accurate method of temperature of finding out tested place strand.The step of this temp measuring method is:
A. also will record temperature data passes to computer by a temp measuring system continuous temperature measurement:
A. the needs on conticaster are accurately measured strand temperature place, and the temperature measurer that preferably sets firmly continuous temperature measurement on the strand that passes through is made the contactless type continuous temperature measurement to strand;
B. described temperature measurer is passed to a computer with signal, and promptly the signal output part of described temperature measurer is connected with the communication port of described computer, and the temperature signal of the strand that temperature measurer records continuously is transported in the computer.
B. determine the method for casting billet surface true temperature:
A. computer take out in a time interval point for measuring temperature adopt the plurality of temperature data;
B. the plurality of temperature data of being got are compared, take out wherein maximum temperature data;
C. the temperature data of the described maximum that will draw is exported as result, as deposits disk file or printout in or display it by display.
The mode that the signal output part of described temperature measurer is connected with the communication port of described computer can be a serial or parallel.
In order to have a system comprehensively to reflect to the temperature of continuous casting billet in two cold-zones, described temperature measurer can be located at crystallizer outlet area, fan-shaped section, aligning section and the horizontal segment of conticaster respectively, and it all is connected with described computer.By such temp measuring system, just the casting blank surface temperature of each point in this two cold-zone can be reflected simultaneously continuously.Described temperature measurer also can be at the aligning section strand of conticaster several transversely at intervals are set.Also can be promptly conticaster vertically on crystallizer outlet area, fan-shaped section district, aligning section district and horizontal segment district temperature measurer is set, the strand in aligning section district transversely at intervals is provided with several temperature measurers simultaneously.The temperature data that each temperature measurer is gathered all is transferred to described computer, and described computer carries out described processing to the temperature data that each temperature measurer is gathered respectively.
The mechanism that temp measuring method provided by the invention accurately is determined at the temperature of casting billet surface in two cold-zones is such: in actual casting process, casting billet surface is usually by moisture film, covering such as steam fog and iron scale, at this moment to its surface temperature measurement, what measure probably is to be affixed on the moisture film on the casting billet surface or the temperature of iron scale, but not the temperature of real casting billet surface, but above-mentioned moisture film or steam fog or iron scale are not successive to the covering of strand, in the target scope of temperature measurer, the strand of process is not covered fully in the regular hour section, therefore, in the described time interval, when certain when the not covered part of casting billet surface appears in the thermometric target spot of temperature measurer in a flash, the real surface temperature of strand is promptly collected in the computer rapidly.Here it is as making the purpose of temperature measurer to some continuous temperature measurements of conticaster in the method for the present invention---and the strand of promptly catching instantaneous appearance is the real surface temperature of cover surface not.Again because owing to being lower than the not temperature of covered casting billet surface, so the true temperature of casting billet surface is the maximum temperature value that records in described time interval section certainly by the temperature of the casting billet surface of moisture film, steam fog or iron scale covering.So the maximum of choosing in a time interval section in the some temperature datas that record is a science as the algorithm of the real surface temperature of strand.
By above-mentioned temperature-measurement principle as can be known, obtain the real temperature of casting billet surface, it is very crucial setting the suitable time interval, according at two cold-zone strands by the covering situation of moisture film and/or steam fog and/or iron scale, the general proper time interval can be at 30 seconds～5 minutes.Further, to be preferable selection at 30 seconds～2 minutes, it is very big to pounce on the possibility of grasping the true temperature of covered casting billet surface not in such time interval.If time interval section is too small, just may not have not covered casting billet surface thermometric target through described temperature measurer, if but the time interval long, temperature measuring efficiency will reduce, and be unfavorable for adjusting casting parameters in time by measurement result.
In addition, the other factors that influences accurate thermometric also has:
The response time of temp measuring system, the response time of temp measuring system is that temperature measurer records a temperature and it is transferred to the time used in the computer again, and its size has very big influence to accurate thermometric.The response time that generally needs this temp measuring system was at 300 milliseconds～2 seconds.
The thermometric distance is the temperature measuring head of temperature measurer and the vertical range between the continuous casting billet surface.It generally can be between 0.5～5 meter.
The size of the target of temperature measurer because not covered part may be less on the strand, if target too big just be difficult to capture, the accuracy of the temperature that records has also just reduced.The diameter of the target of temperature measurer generally preferably is not more than 5 millimeters.
In addition, the temperature-measuring range of employed temperature measurer is within 600～2000 ℃, and its worst error is good less than 1%.
Accurate measuring method of casted blank surface temperature of continuous casting secondary cold region provided by the invention is connected with computer by some temperature measurers of being located at Secondary Cooling Zone of Continuous Caster, transmit simultaneously some temperature datas that temperature data and computer will obtain continuously to computer in a time interval and get surface that wherein peaked processing can reflect continuous casting billet in two cold-zones simultaneously continuously temperature really, by this temperature, can effectively regulate and control the casting speed of conticaster, adjust the flow of cooling water, to improve the output and the quality of continuous-cast blank.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 for conticaster vertically on the structural representation that temperature measurer and temperature measurer are connected with computer is set
Fig. 2 is for transversely being provided with the structural representation that temperature measurer and temperature measurer are connected with computer at conticaster
The specific embodiment
As shown in Figure 1, crystallizer outlet area A, fan-shaped section district B, aligning section district C and horizontal segment district D at conticaster respectively are provided with a temperature measurer 2, the communication port of its signal output part and computer 1 is connected to form a temp measuring system, and the temperature signal of the strand 3 that temperature measurer records continuously is transported in the computer 1.Temperature measurer 2 is located at the top of strand 3, is 1 meter apart from the distance of casting billet surface.The response time of above-mentioned temp measuring system is 400 milliseconds.The diameter of the target of temperature measurer is 2 millimeters.
Also will record temperature data passes to computer by above-mentioned temp measuring system continuous temperature measurement.Computer is obtained the plurality of temperature data to each point for measuring temperature and is compared in a time interval, take out wherein maximum temperature data; The temperature data of the described maximum that draws is exported as result, as deposited in disk file or printout or display it by display.This time interval is 2 minutes.
As shown in Figure 2, temperature measurer 2 can be in the aligning section district of continuous casting billet 3 several transversely are set, for example be provided with four: locate A ' temperature measurer 2 is set distance strand one lateral edges≤10 millimeters, the midpoint C ' of whole strand and be in A ' and C ' between 1/4 B ' of place of strand width respectively establish a temperature measurer 2, the distance at another edge on distance strand width is that the D ' at 1/8 place of strand width is provided with the 4th temperature measurer.
The method of thermometric and to the processing method of the temperature data gathered such as preceding.This time interval is 4 minutes, and the response time is 1 second.The thermometric distance is 3 meters.
Can on conticaster, establish temperature measurer in vertical mode as shown in Figure 1 simultaneously, establish temperature measurer in horizontal mode as shown in Figure 2 simultaneously, thereby obtain more fully system temperature data of strand.
Claims (8)
1, a kind of accurate measuring method of casted blank surface temperature of continuous casting secondary cold region is characterized in that: its step is as follows:
The a temperature measurer is made the contactless type thermometric to strand,
The b temperature data signal is passed to computer continuously,
The described computer of c is handled described temperature data by special algorithm and is obtained strand temperature accurately.
Wherein,
Described temperature measurer is located at the strand orbit top of conticaster;
The signal output part of described temperature measurer is connected with the communication port of described computer, and the temperature data that temperature measurer is gathered is transferred in the described computer;
Described computer carries out following processing to the temperature data that described temperature measurer transmission comes:
A. computer take out in time interval temperature measurer adopt the plurality of temperature data;
B. the plurality of temperature data that temperature measurer is got compare, and take out wherein maximum temperature data;
C. the temperature data of the described maximum that will draw is exported as result.
2, assay method according to claim 1, it is characterized in that: described temperature measurer is a plurality of, crystallizer outlet area on conticaster, fan-shaped section district, aligning section district and horizontal segment district respectively are provided with a temperature measurer at least respectively, the temperature data that each temperature measurer is gathered all is transferred to described computer, and described computer carries out described processing to the temperature data that each temperature measurer is gathered respectively.
3, assay method according to claim 1 and 2 is characterized in that: at transversely several described temperature measurers of the aligning section district of described conticaster strand.
4, assay method according to claim 3, it is characterized in that: four temperature measurers transversely are set: a temperature measurer 2 is set at distance strand one lateral edges≤10 millimeters places in the aligning section district of the strand of conticaster, the midpoint C ' of whole strand and be in A ' and C ' between 1/4 place of strand width respectively establish a temperature measurer, the distance at another edge on distance strand width be the strand width 1/8 place the 4th temperature measurer be set.
6, assay method according to claim 1 is characterized in that: the described time interval is 30 seconds～5 minutes.
7, assay method according to claim 6 is characterized in that: the described time interval is 30 seconds～2 minutes.
8, assay method according to claim 1 is characterized in that: the corresponding time of the thermometric of described temperature measurer is 300 milliseconds～2 seconds.
9, assay method according to claim 1 is characterized in that: the thermometric target spot of described temperature measurer is for being not more than 5 millimeters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01141418 CN1228159C (en) | 2001-09-24 | 2001-09-24 | Accurate measuring method of casted blank surface temperature of continuous casting secondary cold region |
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| CN 01141418 CN1228159C (en) | 2001-09-24 | 2001-09-24 | Accurate measuring method of casted blank surface temperature of continuous casting secondary cold region |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292859C (en) * | 2004-12-06 | 2007-01-03 | 北京华创精英自动化技术有限公司 | Cooling controller with continuous blank manufacture |
| CN100402190C (en) * | 2005-11-03 | 2008-07-16 | 上海梅山钢铁股份有限公司 | Method and equipment for monitoring and analyzing temperature of target on surface of continuous casting billet |
| CN101347822B (en) * | 2008-09-12 | 2010-06-02 | 攀钢集团研究院有限公司 | Method for testing on-line temperature field of bloom continuous casting and method for controlling secondary cooling water |
| CN101162171B (en) * | 2007-11-28 | 2010-06-09 | 重庆大学 | Method for measuring surface temperature of high-temperature casting billet within water fog medium |
| CN101905293A (en) * | 2010-05-31 | 2010-12-08 | 北京科技大学 | High-temperature slab imaging temperature detecting system in secondary cooling zone of continuous casting machine and temperature detecting method thereof |
| CN101664793B (en) * | 2009-09-14 | 2011-03-30 | 东北大学 | Online forecasting method of continuously cast bloom real-time temperature field based on infrared thermal imaging |
| US8104954B2 (en) | 2007-10-24 | 2012-01-31 | Northeastern University | Apparatus and method for measuring the surface temperature of continuous casting billet/slab |
| CN102513516A (en) * | 2011-12-20 | 2012-06-27 | 秦皇岛首秦金属材料有限公司 | Dynamic temperature measurement method for straightening section of continuous casting machine for 400mm thick slabs |
| CN102632213A (en) * | 2011-02-12 | 2012-08-15 | 沈阳鑫君城电子有限公司 | Method for measuring and controlling surface temperature of casting blank and special device thereof |
| CN102847726A (en) * | 2012-09-19 | 2013-01-02 | 南京钢铁股份有限公司 | Wire temperature detection method for water cooling line |
| CN102935496A (en) * | 2012-10-23 | 2013-02-20 | 鞍钢股份有限公司 | Device and method for measuring temperature of surface of portable continuous casting slab |
| CN103347627A (en) * | 2011-02-14 | 2013-10-09 | 新日铁住金株式会社 | Cast slab surface temperature measuring device used in continuous casting machine |
| CN104062030A (en) * | 2014-06-16 | 2014-09-24 | 北京首钢股份有限公司 | Device and method for measuring surface temperature of plate blank online |
| CN116809874A (en) * | 2023-07-03 | 2023-09-29 | 福建三宝钢铁有限公司 | Preparation technology for reducing internal cracks of Q355B slab |
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2001
- 2001-09-24 CN CN 01141418 patent/CN1228159C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292859C (en) * | 2004-12-06 | 2007-01-03 | 北京华创精英自动化技术有限公司 | Cooling controller with continuous blank manufacture |
| CN100402190C (en) * | 2005-11-03 | 2008-07-16 | 上海梅山钢铁股份有限公司 | Method and equipment for monitoring and analyzing temperature of target on surface of continuous casting billet |
| US8104954B2 (en) | 2007-10-24 | 2012-01-31 | Northeastern University | Apparatus and method for measuring the surface temperature of continuous casting billet/slab |
| CN101162171B (en) * | 2007-11-28 | 2010-06-09 | 重庆大学 | Method for measuring surface temperature of high-temperature casting billet within water fog medium |
| CN101347822B (en) * | 2008-09-12 | 2010-06-02 | 攀钢集团研究院有限公司 | Method for testing on-line temperature field of bloom continuous casting and method for controlling secondary cooling water |
| CN101664793B (en) * | 2009-09-14 | 2011-03-30 | 东北大学 | Online forecasting method of continuously cast bloom real-time temperature field based on infrared thermal imaging |
| CN101905293B (en) * | 2010-05-31 | 2012-07-25 | 北京科技大学 | High-temperature slab imaging temperature detecting system in secondary cooling zone of continuous casting machine and temperature detecting method thereof |
| CN101905293A (en) * | 2010-05-31 | 2010-12-08 | 北京科技大学 | High-temperature slab imaging temperature detecting system in secondary cooling zone of continuous casting machine and temperature detecting method thereof |
| CN102632213A (en) * | 2011-02-12 | 2012-08-15 | 沈阳鑫君城电子有限公司 | Method for measuring and controlling surface temperature of casting blank and special device thereof |
| CN103347627A (en) * | 2011-02-14 | 2013-10-09 | 新日铁住金株式会社 | Cast slab surface temperature measuring device used in continuous casting machine |
| US8888363B2 (en) | 2011-02-14 | 2014-11-18 | Nippon Steel & Sumitomo Metal Corporation | Cast slab surface temperature measuring device used in continuous casting machine |
| CN103347627B (en) * | 2011-02-14 | 2016-02-10 | 新日铁住金株式会社 | The temperature measuring equipment on the slab surface used in continuous casting machine |
| CN102513516A (en) * | 2011-12-20 | 2012-06-27 | 秦皇岛首秦金属材料有限公司 | Dynamic temperature measurement method for straightening section of continuous casting machine for 400mm thick slabs |
| CN102847726A (en) * | 2012-09-19 | 2013-01-02 | 南京钢铁股份有限公司 | Wire temperature detection method for water cooling line |
| CN102935496A (en) * | 2012-10-23 | 2013-02-20 | 鞍钢股份有限公司 | Device and method for measuring temperature of surface of portable continuous casting slab |
| CN102935496B (en) * | 2012-10-23 | 2016-03-02 | 鞍钢股份有限公司 | A kind of portable continuous casting billet surface temperature measurement device and temp measuring method |
| CN104062030A (en) * | 2014-06-16 | 2014-09-24 | 北京首钢股份有限公司 | Device and method for measuring surface temperature of plate blank online |
| CN116809874A (en) * | 2023-07-03 | 2023-09-29 | 福建三宝钢铁有限公司 | Preparation technology for reducing internal cracks of Q355B slab |
| CN116809874B (en) * | 2023-07-03 | 2024-04-12 | 福建三宝钢铁有限公司 | Preparation technology for reducing internal cracks of Q355B slab |
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| CN1228159C (en) | 2005-11-23 |
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