CN104923575B - Steel rolling temprature control method - Google Patents
Steel rolling temprature control method Download PDFInfo
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- CN104923575B CN104923575B CN201510281466.8A CN201510281466A CN104923575B CN 104923575 B CN104923575 B CN 104923575B CN 201510281466 A CN201510281466 A CN 201510281466A CN 104923575 B CN104923575 B CN 104923575B
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- temperature
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a kind of steel rolling temprature control method, it is related to technical field of steel rolling, it comprises the following steps：Steel grade and outlet milling train are selected, according to selected judgement rolling specs and selects temperature control program section to run；When detecting signal of the red material, tapping temperature is measured by temperature measurer, judges measured tapping temperature whether within the temperature range of open rolling setting, when measured steel temperature is not when within the temperature range of open rolling setting, interlock heating furnace extractor and stop tapping, be further continued for tapping after a period of time that is delayed；The temperature measurer of work is determined using milling train run signal, whether the temperature for each temperature measurer measurement for judging to work in the operation of rolling respectively is in setting range, when measurement temperature is not in the range of corresponding design temperature, the time is come out of the stove by PLC adjustment and milling train stings the steel time；When the temperature that each temperature measurer measurement of work obtains is in the range of corresponding design temperature, you can continuous tapping.The present invention can improve product quality and production efficiency.
Description
Technical field
The present invention relates to technical field of steel rolling, especially a kind of process for being mainly used in steel temperature in steel industry rolling process
Control method.
Background technology
During Rolling production, steel billet is first sent into heating stove heat, then by blooming mill repeat-rolling and then
Rolled into roll mill, the temperature in above-mentioned each stage is to resistance of deformation of the strip in each rolling-mill housing, draught pressure, finished product
Metallographic structure, grain size, the surface state of mechanical performance and strip all have a direct impact.Existing rolling process temperature control
Method is, using temperature and product outlet temperature etc. before temperature measurer detection heating furnace tapping temperature, finish rolling, each steel to be carried out
Steel temperature records and by large screen display temperature, by checking the steel temperature height of large screen display, heating furnace is controlled by artificial
Producing steel velocity, to realize the control of temperature, this temprature control method is very inaccurate, and can not all cover the temperature in each stage
Degree control, causes product quality to reduce.
The content of the invention
It is an object of the invention to provide a kind of steel rolling temprature control method, this method can solve existing rolling process temperature
Degree control is inaccurate, the problem of causing product quality to reduce.
In order to solve the above problems, the technical solution adopted by the present invention is：This steel rolling temprature control method is in roughing
Temperature measurer is set respectively before and after unit and before and after mm finishing mill unit, this method comprises the following steps：
A, steel grade and outlet milling train are selected by man-machine interface, PLC steel grade and outlet milling train selected by judge rolling rule
Lattice simultaneously select temperature control program section to run；
B, when detecting signal of the red material, tapping temperature is measured by being arranged on the temperature measurer before roughing mills, judges to be surveyed
Whether the tapping temperature of amount is within the temperature range of open rolling setting, when measured tapping temperature is not in the temperature model of open rolling setting
When enclosing interior, PLC interlocking heating furnace extractors stop tapping, are further continued for tapping after a period of time that is delayed；
C, the temperature measurer of work is determined using milling train run signal, judges each survey to be worked in the operation of rolling respectively by PLC
Whether the temperature of warm instrument measurement is in setting range, when the temperature of temperature measurer measurement is not in the range of corresponding design temperature,
Come out of the stove the time by PLC adjustment；
D, when the temperature that each temperature measurer measurement of work obtains is in the range of corresponding design temperature, you can continuously go out
Steel.
In the technical scheme of above-mentioned steel rolling temprature control method, more specifically technical scheme can also be：When outlet milling train
Steel signal is received, while the temperature measurer detection temperature for exporting milling train is more than 600 DEG C, starts to collect steel rolling temperature, alarm signal
By 500ms filtering, the interlocking signal and statistical signal stablized.
By adopting the above-described technical solution, the present invention has the advantages that compared with prior art：
1st, by temperature, finished product temperature before temperature measurer measurement tapping temperature, finish rolling etc., if temperature is unsatisfactory for the model of setting
Requirement is enclosed, then PLC interlocks heating furnace extractor, adjustment delay tapping time, so as to realize accurate temperature control.
2nd, the temperature control of steel rolling overall process can be covered, improves product quality and production efficiency.
Brief description of the drawings
Fig. 1 is the steel rolling equipment layout drawing of embodiment.
Fig. 2 is the flow chart of this steel rolling temprature control method embodiment.
Embodiment
The invention will be further described for embodiment below in conjunction with the accompanying drawings：
Steel rolling production-line shown in Fig. 1, the first temperature measurer PY1 of measurement tapping temperature is provided with before roughing mills, slightly
The second temperature measurer PY2 is provided with before milling train group, the 3rd temperature measurer for measuring temperature before finish rolling is provided with before mm finishing mill unit
PY3, the 4th temperature measurer PY4 of measurement finished product temperature is provided with after mm finishing mill unit.
As shown in Fig. 2 this Steel Rolling Control method is as follows：
A, before starting steel rolling, operating personnel select steel grade and outlet milling train by WINCC man-machine interfaces, and PLC is selected by
Steel grade and outlet milling train judge rolling specs and automatically select the operation of temperature control program section；Temperature control program section can be according to choosing
The outlet milling train selected and select the temperature measurer used, if 5# milling trains are product outlet milling train, at this moment only PY1 and PY2 is used in selection；And
Require to set corresponding temperature range by steel grade and finished product temperature control, such as select round steel 65Mn kinds, pass through finished product temperature
Requirement is controlled to know that temperature range is 1000 ± 30 DEG C, program setting is thermo-field thoery when steel temperature is more than 1030 DEG C, when steel temperature
Ultralow for temperature during less than 970 DEG C, each steel record is once.
B, when hot metal detector HMD1 detects signal of the red material, by being arranged on the first temperature measurer before roughing mills
PY1 measures tapping temperature, measured tapping temperature is judged whether within the temperature range of open rolling setting, when measured tapping
When temperature is less than within the temperature range of open rolling setting, PLC interlocking heating furnace extractors stop tapping, heating furnace heating, otherwise work as
When measured tapping temperature is higher than within the temperature range of open rolling setting, PLC program interlocking heating furnace extractor stops tapping, adds
Hot stove cools, and according to actual heating furnace steel billet heating and cooling situation, setting is further continued for out next steel after delay a period of time, is delayed
The tapping time is set by production technology section according to actual steel grade and heating furnace heating efficiency.
C, the temperature measurer of work is determined using milling train run signal, judges each survey to be worked in the operation of rolling respectively by PLC
The temperature of warm instrument measurement whether in setting range, be divided into start rolling temperature, in roll temperature and product outlet temperature, when temperature measurer is surveyed
As long as the temperature of amount has one not in the range of corresponding design temperature, PLC program interlocking heating furnace extractor stops tapping,
Delay time of coming out of the stove is adjusted by PLC program；For example, illustrate steel rolling specification ＜ Φ when finish rolling has milling train operation in rolling process
105, the 4th temperature measurer PY4 after 14# milling trains is just automatically selected by temperature control program section and is used as warm control signal；When from thick
Roll to illustrate steel rolling specification >=Φ 105 during product outlet, at this moment just pass through the second temperature measurer after 5# milling trains（PY2）As temperature control
Signal processed.In order to obtain accurate, reliable temperature, filter out some artificial or interference signals, when outlet milling train have steel signal and
When detection temperature is more than 600 DEG C, start to collect steel rolling temperature, when there is measurement steel temperature not in setting range, the report that sends
Alert signal passes through 500ms filtering, with the branch of interlocking the extractor signal and steel billet finally stablized not in setting range
Counting number signal, count signal are used for counting number of the steel billet of each class not in setting range, and respectively steel billet temperature is high
Statistics low with steel billet temperature.
D, when the temperature that each temperature measurer measurement of work obtains is in the range of corresponding design temperature, you can continuously go out
Steel.
Claims (1)
1. a kind of steel rolling temprature control method, temperature measurer is set respectively before and after roughing mills and before and after mm finishing mill unit, its feature
It is to comprise the following steps：
A, steel grade and outlet milling train are selected by man-machine interface, PLC steel grade and outlet milling train selected by judge rolling specs simultaneously
Select the operation of temperature control program section；
B, when detecting signal of the red material, tapping temperature is measured by being arranged on the temperature measurer before roughing mills, is judged measured
Whether tapping temperature is within the temperature range of open rolling setting, when measured tapping temperature is not within the temperature range of open rolling setting
When, PLC interlocking heating furnace extractors stop tapping, are further continued for tapping after a period of time that is delayed；
C, the temperature measurer of work is determined using milling train run signal, judges each temperature measurer to be worked in the operation of rolling respectively by PLC
Whether the temperature of measurement is in setting range, when the temperature of temperature measurer measurement is not in the range of corresponding design temperature, by PLC
Adjustment is come out of the stove the time；When outlet, milling train has received steel signal, while the temperature measurer detection temperature for exporting milling train is more than 600 DEG C, opens
Begin to collect steel rolling temperature, alarm signal passes through 500ms filtering, the interlocking signal and statistical signal stablized；
D, when the temperature that each temperature measurer measurement of work obtains is in the range of corresponding design temperature, you can continuous tapping.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510281466.8A CN104923575B (en) | 2015-05-28 | 2015-05-28 | Steel rolling temprature control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281466.8A CN104923575B (en) | 2015-05-28 | 2015-05-28 | Steel rolling temprature control method |
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| CN104923575A CN104923575A (en) | 2015-09-23 |
| CN104923575B true CN104923575B (en) | 2017-12-12 |
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| CN201510281466.8A Active CN104923575B (en) | 2015-05-28 | 2015-05-28 | Steel rolling temprature control method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112684831A (en) * | 2020-12-04 | 2021-04-20 | 辽沈工业集团有限公司 | Copper-clad steel plate hot-rolling heating temperature control system |
| CN112718880A (en) * | 2020-12-14 | 2021-04-30 | 江苏沙钢集团有限公司 | Tapping temperature control system of rod and wire heating furnace and operation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05148545A (en) * | 1991-11-26 | 1993-06-15 | Nippon Steel Corp | Production of thick steel plate having excellent characteristic to stop propagation of brittle crack |
| JPH09239423A (en) * | 1996-03-11 | 1997-09-16 | Sumitomo Metal Ind Ltd | Method for controlling water cooling in steel bar rolling equipment |
| DE19962891A1 (en) * | 1999-12-23 | 2001-06-28 | Sms Demag Ag | Method and device for cooling hot-rolled profiles |
| CN101745549B (en) * | 2008-12-11 | 2013-06-19 | 宝山钢铁股份有限公司 | Method for controlling steel feeding temperature of band steel of hot strip mill |
| CN102441578B (en) * | 2011-12-28 | 2013-12-25 | 河北省首钢迁安钢铁有限责任公司 | Method for increasing coiling temperature control accuracy of low temperature steel |
| CN103331309B (en) * | 2013-06-09 | 2015-02-25 | 山西太钢不锈钢股份有限公司 | Automatic temperature-control and rolling-control device for reversible type rolling mill |
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