CN104923575A - Method for controlling steel rolling temperature - Google Patents
Method for controlling steel rolling temperature Download PDFInfo
- Publication number
- CN104923575A CN104923575A CN201510281466.8A CN201510281466A CN104923575A CN 104923575 A CN104923575 A CN 104923575A CN 201510281466 A CN201510281466 A CN 201510281466A CN 104923575 A CN104923575 A CN 104923575A
- Authority
- CN
- China
- Prior art keywords
- temperature
- rolling
- tapping
- steel
- measured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Abstract
The invention discloses a method for controlling a steel rolling temperature, and relates to the technical field of steel rolling. The method comprises the following steps that a steel grade and an export rolling machine are selected, and according to the selection, a rolling specification is judged, and a temperature control program segment is selected for running; when a red steel signal is detected, temperature measuring instruments are used for measuring the tapping temperatures, whether the measured tapping temperatures are within the initial rolling set temperature ranges or not is judged, when the measured tapping temperatures are not within the initial rolling set temperature ranges, an interlocking heating furnace discharge machine stops tapping, and after stoppage of tapping is delayed for a period of time, tapping continues; a rolling machine operation signal is utilized for determining the working temperature measuring instruments, whether the temperatures measured by the working temperature measuring instruments are within the set ranges in the rolling process is judged, and when the measured temperatures are not within the corresponding set temperature ranges, a PLC adjusts the released time and the steel occluding time of the rolling machine; and when the temperatures obtained through measurement of the working temperature measuring instruments are within the corresponding set temperature ranges, tapping can be continuously carried out. According to the method, the product quality and the production efficiency can be improved.
Description
Technical field
The present invention relates to technical field of steel rolling, especially a kind of course control method for use being mainly used in steel temperature in steel industry rolling process.
Background technology
In Rolling production process, first steel billet is sent into heating furnace heating, then after blooming mill repeat-rolling, enter roll mill rolling again, the temperature in above-mentioned each stage is to metallographic structure, grain size, the mechanical performance of the resistance of deformation of band steel in each rolling-mill housing, draught pressure, finished product and be with the surface state of steel all to have a direct impact.Existing rolling process temperature-controlled process is, temperature and product outlet temperature etc. before use temperature measurer detection heating furnace tapping temperature, finish rolling, to each root steel carry out steel temperature record and by large screen display temperature, by checking the steel temperature height of large screen display, by the producing steel velocity manually controlling heating furnace, realize the control of temperature, this temperature-controlled process is very inaccurate, and the temperature that all can not cover each stage controls, and causes product quality to reduce.
Summary of the invention
The object of this invention is to provide a kind of steel rolling temperature-controlled process, this method can solve existing rolling process temperature and control inaccurate, causes the problem that product quality reduces.
In order to solve the problem, the technical solution used in the present invention is: this steel rolling temperature-controlled process arranges temperature measurer respectively before and after roughing mills He before and after mm finishing mill unit, and the method comprises the following steps:
A, by man-machine interface select steel grade and outlet milling train, PLC according to selected steel grade and outlet milling train judge rolling specs and selective temperature control program section operation;
B, when signal of the red material being detected, tapping temperature is measured by being arranged on the temperature measurer before roughing mills, whether the tapping temperature measured by judgement is in the temperature range of open rolling setting, when measured tapping temperature is not in the temperature range of open rolling setting, PLC interlocking heating furnace extractor stops tapping, continues tapping after time delay a period of time again;
C, milling train run signal is utilized to determine the temperature measurer of work, whether the temperature that each temperature measurer being judged respectively to work in the operation of rolling by PLC is measured is in setting range, when the temperature that temperature measurer is measured is not within the scope of the design temperature of correspondence, adjusted by PLC and come out of the stove the time;
D, when the temperature that obtains of each temperature measurer measurement worked is all within the scope of the design temperature of correspondence, can to tap continuously.
In the technical scheme of above-mentioned steel rolling temperature-controlled process, technical scheme can also be more specifically: when outlet milling train has received steel signal, the temperature measurer detected temperatures simultaneously exporting milling train is greater than 600 DEG C, start to collect steel rolling temperature, alarm signal, through the filtering of 500ms, obtains stable interlocking signal and statistical signal.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, measure temperature, finished product temperature etc. before tapping temperature, finish rolling by temperature measurer, if temperature does not meet the area requirement of setting, then PLC interlocks heating furnace extractor, the adjustment time delay tapping time, thus realizes temperature accurately and control.
The temperature that 2, can cover steel rolling overall process controls, and improves product quality and production efficiency.
Accompanying drawing explanation
Fig. 1 is the steel rolling equipment layout drawing of embodiment.
Fig. 2 is the flow chart of this steel rolling temperature-controlled process embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Steel rolling production-line shown in Fig. 1, the the first temperature measurer PY1 measuring tapping temperature is provided with before roughing mills, the second temperature measurer PY2 is provided with before roughing mills, being provided with the 3rd temperature measurer PY3 for measuring temperature before finish rolling before mm finishing mill unit, after mm finishing mill unit, being provided with the 4th temperature measurer PY4 measuring finished product temperature.
As shown in Figure 2, this Steel Rolling Control method is as follows:
Before A, beginning steel rolling, operating personnel select steel grade and outlet milling train by WINCC man-machine interface, and PLC judges rolling specs according to selected steel grade and outlet milling train and selective temperature control program section is run automatically; Temperature control program section can according to the outlet milling train selected the temperature measurer of choice for use, if 5# milling train is product outlet milling train, at this moment only selection PY1 and PY2; And set corresponding temperature range by steel grade and finished product temperature control overflow, as selected round steel 65Mn kind, know that temperature range is 1000 ± 30 DEG C by finished product temperature control overflow, program setting is thermo-field thoery when steel temperature is more than 1030 DEG C, when steel temperature is lower than being that temperature is ultralow when 970 DEG C, each steel record once.
B, when hot metal detector HMD1 detects signal of the red material, tapping temperature is measured by being arranged on the first temperature measurer PY1 before roughing mills, whether the tapping temperature measured by judgement is in the temperature range of open rolling setting, when in the temperature range that measured tapping temperature sets lower than open rolling, PLC interlocking heating furnace extractor stops tapping, heating furnace heats up, otherwise when in the temperature range that measured tapping temperature sets higher than open rolling, PLC programed interlocking heating furnace extractor stops tapping, heating furnace is lowered the temperature, according to actual heating furnace steel billet heating and cooling situation, continue again next root steel after setting time delay a period of time, the time delay tapping time is set according to actual steel grade and heating furnace heating efficiency by production technology section.
C, milling train run signal is utilized to determine the temperature measurer of work, whether the temperature that each temperature measurer being judged respectively to work in the operation of rolling by PLC is measured is in setting range, be divided into start rolling temperature, in roll temperature and product outlet temperature, as long as when temperature measurer measure temperature have one not within the scope of the design temperature of correspondence time, PLC programed interlocking heating furnace extractor stops tapping, to be come out of the stove delay time by the adjustment of PLC program; Such as, steel rolling specification < Φ 105 is described when finish rolling in rolling process has milling train to run, just automatically selects the 4th temperature measurer PY4 after 14# milling train as temperature control signal by temperature control program section; When being product outlet from roughing, steel rolling specification >=Φ 105 being described, at this moment just passing through the second temperature measurer (PY2) after 5# milling train as temperature control signal.In order to obtain accurate, reliable temperature, filter out some artificial or interfering signals, when exporting milling train and having steel signal and detected temperatures to be greater than 600 DEG C, start to collect steel rolling temperature, when occurring that measurement steel temperature is not in setting range, the alarm signal sent is through the filtering of 500ms, to obtain finally stable interlocking extractor signal and the number count signal of steel billet not in setting range, count signal is used for adding up the number of steel billet not in setting range of each class, is respectively the high and low statistics of steel billet temperature of steel billet temperature.
D, when the temperature that obtains of each temperature measurer measurement worked is all within the scope of the design temperature of correspondence, can to tap continuously.
Claims (2)
1. a steel rolling temperature-controlled process, arranges temperature measurer respectively before and after roughing mills He before and after mm finishing mill unit, it is characterized in that comprising the following steps:
A, by man-machine interface select steel grade and outlet milling train, PLC according to selected steel grade and outlet milling train judge rolling specs and selective temperature control program section operation;
B, when signal of the red material being detected, tapping temperature is measured by being arranged on the temperature measurer before roughing mills, whether the tapping temperature measured by judgement is in the temperature range of open rolling setting, when measured tapping temperature is not in the temperature range of open rolling setting, PLC interlocking heating furnace extractor stops tapping, continues tapping after time delay a period of time again;
C, milling train run signal is utilized to determine the temperature measurer of work, whether the temperature that each temperature measurer being judged respectively to work in the operation of rolling by PLC is measured is in setting range, when the temperature that temperature measurer is measured is not within the scope of the design temperature of correspondence, adjusted by PLC and come out of the stove the time;
D, when the temperature that obtains of each temperature measurer measurement worked is all within the scope of the design temperature of correspondence, can to tap continuously.
2. steel rolling temperature-controlled process according to claim 1, it is characterized in that: when outlet milling train has received steel signal, the temperature measurer detected temperatures simultaneously exporting milling train is greater than 600 DEG C, start to collect steel rolling temperature, alarm signal, through the filtering of 500ms, obtains stable interlocking signal and statistical signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281466.8A CN104923575B (en) | 2015-05-28 | 2015-05-28 | Steel rolling temprature control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281466.8A CN104923575B (en) | 2015-05-28 | 2015-05-28 | Steel rolling temprature control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104923575A true CN104923575A (en) | 2015-09-23 |
| CN104923575B CN104923575B (en) | 2017-12-12 |
Family
ID=54111183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510281466.8A Active CN104923575B (en) | 2015-05-28 | 2015-05-28 | Steel rolling temprature control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104923575B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP1111074A2 (en) * | 1999-12-23 | 2001-06-27 | SMS Demag AG | Method and device for cooling hot-rolled profiles |
| CN101745549A (en) * | 2008-12-11 | 2010-06-23 | 宝山钢铁股份有限公司 | Method for controlling steel feeding temperature of band steel of hot strip mill |
| CN102441578A (en) * | 2011-12-28 | 2012-05-09 | 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 |
| CN103331309A (en) * | 2013-06-09 | 2013-10-02 | 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 |
-
2015
- 2015-05-28 CN CN201510281466.8A patent/CN104923575B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP1111074A2 (en) * | 1999-12-23 | 2001-06-27 | SMS Demag AG | Method and device for cooling hot-rolled profiles |
| CN101745549A (en) * | 2008-12-11 | 2010-06-23 | 宝山钢铁股份有限公司 | Method for controlling steel feeding temperature of band steel of hot strip mill |
| CN102441578A (en) * | 2011-12-28 | 2012-05-09 | 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 |
| CN103331309A (en) * | 2013-06-09 | 2013-10-02 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104923575B (en) | 2017-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101693257B (en) | Method for realizing continuous feedback control by duality of hot finishing outlet instruments | |
| CN105195807B (en) | A kind of flying shear cutting method | |
| CN103019150A (en) | Walking beam type heating furnace automatic steel tapping control system and control method thereof | |
| CN104438458B (en) | The method for aligning of nose steel plate | |
| CN101596546B (en) | Steel rolling production process used in steel production | |
| CN101941024A (en) | Method for eliminating peeling of IF steel edge in hot continuous rolling process | |
| CN106694572B (en) | On-line rolling technique adjustment system and method based on roll wear detection | |
| CN104923575A (en) | Method for controlling steel rolling temperature | |
| CN101182984A (en) | Hot rolling bar plate scythes bend and bias-running online detection method | |
| CN104531936B (en) | Converter molten steel carbon content On-line Measuring Method based on Flame Image Characteristics | |
| CN106980305A (en) | The electric control gear and its control method of a kind of on-line automatic control forging die temperature | |
| CN106424156A (en) | Cold tandem mill thickness control system and thickness control method of cold tandem mill process | |
| CN100522406C (en) | Method for optimising the production technology of rolled products | |
| CN105695705B (en) | A kind of steel plate for on-line solution is quickly cooled down basic automation systems after rolling | |
| CN104858245A (en) | Rough-rolling head warping and bending control method for hot continuous rolling mill based on multiple heating furnaces | |
| CN109590337A (en) | A kind of control system and method preventing steel scrap | |
| CN108655182B (en) | A kind of hot-strip production method of overall length thickness consecutive variations | |
| CN106607459A (en) | Wedge control system and method for hot rolled strip steel | |
| CN103586294A (en) | Laminar cooling method, hot continuous rolling production line and production line laminar cooling system for thick plates | |
| CN105631231B (en) | A kind of method being modified to course of hot rolling temperature measured value | |
| CN108246996A (en) | A kind of method for improving casting machine cutting scale qualification rate | |
| CN201397128Y (en) | Laser camera shooting type thickness measuring control device | |
| CN201033333Y (en) | Strip steel coiling temperature control device | |
| CN103331309B (en) | Automatic temperature-control and rolling-control device for reversible type rolling mill | |
| CN102896184B (en) | Load reduction control method of hot straightener during reverse pass straightening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |