CN102528153A - Method for improving shearing accuracy of flying shear on hot-rolled thin plate production line - Google Patents
Method for improving shearing accuracy of flying shear on hot-rolled thin plate production line Download PDFInfo
- Publication number
- CN102528153A CN102528153A CN2012100053955A CN201210005395A CN102528153A CN 102528153 A CN102528153 A CN 102528153A CN 2012100053955 A CN2012100053955 A CN 2012100053955A CN 201210005395 A CN201210005395 A CN 201210005395A CN 102528153 A CN102528153 A CN 102528153A
- Authority
- CN
- China
- Prior art keywords
- signal
- hot metal
- metal detector
- flying shear
- pyrometer
- 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.)
- Pending
Links
Abstract
The invention relates to a method for improving the shearing accuracy of a flying shear on a hot-rolled thin plate production line. According to the technical scheme, the method comprises the following steps of: arranging a pyrometer (1) for detecting the temperature of band steel and a hot metal detector (2) in front of the flying shear (3); inputting a band steel temperature signal measured by the pyrometer into a control program of a hot metal detector signal; comparing the temperature signal with a threshold value; converting a real temperature signal into a hot metal detector Boolean signal; and when a pyrometer signal is greater than the threshold value, outputting a signal detected by an analog hot metal detector, namely outputting Boolean 1, and otherwise, outputting the Boolean 0. The invention has the advantages that: hot metal detectors and relative maintenance amount are reduced, so that multipurpose utilization of an instrument is realized, the accuracy and the stability of an output signal are ensured, the shearing accuracy of the flying shear is greatly improved, and the yield of a product is improved.
Description
Technical field
The present invention relates to the method that a kind of SPHC production line improves the flying shear shear precision, belong to the metallurgy industry technical field of steel rolling.
Background technology
At present, SPHC production line finish rolling inlet flying shear all disposes pyrometer and hot metal detector as last.Finish rolling inlet high-pressure water descaling case then is installed before the finishing stand behind the flying shear.Pyrometer is in order to carry out temperature detection to the band steel, and hot metal detector provides necessary and is with the steel position detection signal accurately in order to shear control to flying shear.The working environment of finishing mill entrance area is very abominable; Especially winter, on-the-spot steam was very many; Cause the signal of hot metal detector can not satisfy flying shear off and on and control requirement accurately, cause shearing the excessive steel scrap that causes because of the hot metal detector signal problem often.In addition, the threshold value of hot metal detector adjustment is difficulty, generally can't realize the software adjustment, some in addition can't adjust.
Summary of the invention
The purpose of this invention is to provide the method that a kind of SPHC production line improves the flying shear shear precision; The temperature data passing threshold that utilizes the pyrometer measurement to come out is relatively participated in flying shear shearing control in the back; Improve the accuracy and the stability of detection signal; Improve the shear precision of flying shear, solve the problems referred to above that background technology exists.
Technical scheme of the present invention is: be provided with belt steel temperature before the flying shear and detect with pyrometer and hot metal detector; The belt steel temperature signal that pyrometer is recorded is incorporated in the control program of hot metal detector signal; Serviceability temperature signal and threshold value compare, and convert real number type temperature signal into hot metal detector Boolean type signal.
Said temperature signal and threshold ratio, when pyrometer signal greater than threshold value time output simulation hot metal detector examine signal, promptly exports Boolean type and be " 1 ", otherwise the output Boolean type is " 0 ".
The size of threshold value is confirmed according to 75% of the temperature evaluation data of secondary machine.
Utilize HMI can freely select signal source and two signal sources can realize automatically inspection mutually and warning.
Good effect of the present invention is: save hot metal detector and relevant maintenance, realized that the multipurpose of instrument is used, guaranteed the accuracy and the stability of output signal, improved the shear precision of flying shear greatly, improved the lumber recovery of product.
Description of drawings
Fig. 1 is technology arrangement figure of the present invention;
Fig. 2 is the record of analog quantity PDA when converting digital quantity into;
Among the figure: 1. pyrometer, 2. hot metal detector, 3. flying shear.
The specific embodiment
Through embodiment the present invention is further specified below.
With reference to Fig. 1; A kind of SPHC production line improves the method for flying shear shear precision; The 6.5m place is provided with the belt steel temperature detection with pyrometer 1 and hot metal detector 2 before the flying shear 3, and guarantees the control function of its original pyrometer signal through the location definition of hot metal detector in the update routine.
With reference to Fig. 2, the belt steel temperature signal that pyrometer is recorded is incorporated in the control program of hot metal detector signal, and serviceability temperature signal and threshold value compare, and convert real number type temperature signal into hot metal detector Boolean type signal.When pyrometer signal greater than threshold value time output simulation hot metal detector examine signal; Promptly export Boolean type and be " 1 "; Otherwise the output Boolean type is " 0 "; The size of threshold value is confirmed according to 75% of the temperature evaluation data of secondary machine, utilizes HMI can freely select signal source and two signal sources can realize examining mutually automatically and warning.
Claims (4)
1. a SPHC production line improves the method for flying shear shear precision; It is characterized in that the preceding belt steel temperature that is provided with of flying shear (3) detects with pyrometer (1) and hot metal detector (2); The belt steel temperature signal that pyrometer is recorded is incorporated in the control program of hot metal detector signal; Serviceability temperature signal and threshold value compare, and convert real number type temperature signal into hot metal detector Boolean type signal.
2. improve the method for flying shear shear precision according to the said SPHC production line of claim 1; It is characterized in that said temperature signal and threshold ratio; When pyrometer signal greater than threshold value time output simulation hot metal detector examine signal; Promptly export Boolean type and be " 1 ", otherwise the output Boolean type is " 0 ".
3. improve the method for flying shear shear precision according to claim 1 or 2 said SPHC production lines, the size that it is characterized in that threshold value is confirmed according to 75% of the temperature evaluation data of secondary machine.
4. improve the method for flying shear shear precision according to the said SPHC production line of claim 1, it is characterized in that utilizing HMI can freely select signal source and two signal sources can realize automatically inspection mutually and warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100053955A CN102528153A (en) | 2012-01-10 | 2012-01-10 | Method for improving shearing accuracy of flying shear on hot-rolled thin plate production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100053955A CN102528153A (en) | 2012-01-10 | 2012-01-10 | Method for improving shearing accuracy of flying shear on hot-rolled thin plate production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102528153A true CN102528153A (en) | 2012-07-04 |
Family
ID=46336864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100053955A Pending CN102528153A (en) | 2012-01-10 | 2012-01-10 | Method for improving shearing accuracy of flying shear on hot-rolled thin plate production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102528153A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537750A (en) * | 2012-07-17 | 2014-01-29 | 宝山钢铁股份有限公司 | Cutting control method for rolling-cutting type bilateral scissors |
| CN104107948A (en) * | 2014-06-16 | 2014-10-22 | 河北钢铁股份有限公司唐山分公司 | Method for controlling automatic shearing speed of tandem cold rolling mill flying shears |
| CN104139210A (en) * | 2014-07-18 | 2014-11-12 | 武钢集团昆明钢铁股份有限公司 | Rod double-length flying shear control method and device |
| CN105965088A (en) * | 2016-06-01 | 2016-09-28 | 中国重型机械研究院股份公司 | Calculation method for drive control parameters of drum type flying shear based on specified lengths of shearing targets |
| CN107552861A (en) * | 2017-09-29 | 2018-01-09 | 四川德胜集团钒钛有限公司 | A kind of flying shear control method |
| CN108405619A (en) * | 2018-02-27 | 2018-08-17 | 首钢京唐钢铁联合有限责任公司 | The system and method for preventing flying shear back-end crop excessive |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391264A (en) * | 2007-09-19 | 2009-03-25 | 中冶赛迪工程技术股份有限公司 | Technique method of thin middle plate continuous casting and rolling production |
| CN101452257A (en) * | 2007-11-29 | 2009-06-10 | 宝山钢铁股份有限公司 | Crank type flying shear control method and apparatus with head and tail shearing compensation |
| CN102087532A (en) * | 2009-12-03 | 2011-06-08 | 唐山国丰钢铁有限公司 | Method for controlling flying shear |
-
2012
- 2012-01-10 CN CN2012100053955A patent/CN102528153A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391264A (en) * | 2007-09-19 | 2009-03-25 | 中冶赛迪工程技术股份有限公司 | Technique method of thin middle plate continuous casting and rolling production |
| CN101452257A (en) * | 2007-11-29 | 2009-06-10 | 宝山钢铁股份有限公司 | Crank type flying shear control method and apparatus with head and tail shearing compensation |
| CN102087532A (en) * | 2009-12-03 | 2011-06-08 | 唐山国丰钢铁有限公司 | Method for controlling flying shear |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537750A (en) * | 2012-07-17 | 2014-01-29 | 宝山钢铁股份有限公司 | Cutting control method for rolling-cutting type bilateral scissors |
| CN103537750B (en) * | 2012-07-17 | 2016-08-24 | 宝山钢铁股份有限公司 | A kind of Cutting control method for rolling-cutting type bilateral scissors |
| CN104107948A (en) * | 2014-06-16 | 2014-10-22 | 河北钢铁股份有限公司唐山分公司 | Method for controlling automatic shearing speed of tandem cold rolling mill flying shears |
| CN104107948B (en) * | 2014-06-16 | 2016-07-06 | 河北钢铁股份有限公司唐山分公司 | A kind of method for control speed of cold continuous rolling flying shear automatic shearing |
| CN104139210A (en) * | 2014-07-18 | 2014-11-12 | 武钢集团昆明钢铁股份有限公司 | Rod double-length flying shear control method and device |
| CN104139210B (en) * | 2014-07-18 | 2016-05-11 | 武钢集团昆明钢铁股份有限公司 | A kind of bar flying shear control method and device thereof |
| CN105965088A (en) * | 2016-06-01 | 2016-09-28 | 中国重型机械研究院股份公司 | Calculation method for drive control parameters of drum type flying shear based on specified lengths of shearing targets |
| CN107552861A (en) * | 2017-09-29 | 2018-01-09 | 四川德胜集团钒钛有限公司 | A kind of flying shear control method |
| CN108405619A (en) * | 2018-02-27 | 2018-08-17 | 首钢京唐钢铁联合有限责任公司 | The system and method for preventing flying shear back-end crop excessive |
| CN108405619B (en) * | 2018-02-27 | 2019-09-20 | 首钢京唐钢铁联合有限责任公司 | The system and method for preventing flying shear back-end crop excessive |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102528153A (en) | Method for improving shearing accuracy of flying shear on hot-rolled thin plate production line | |
| CN102658298B (en) | Plate-shape quality online judgment method applicable to hot-rolled thin strip steel | |
| CN103372573B (en) | A kind of hot rolling slab is videoed amendable tracking and controlling method | |
| CN104923567B (en) | Method for identifying and monitoring slippage of engagement of strip head into frame during finish rolling of hot rolled strip | |
| CN109461095A (en) | A kind of data processing method and equipment of the load event detection for the identification of non-intrusion type load | |
| CN204093840U (en) | A kind of strip tracking device | |
| CN102581036A (en) | Hot tandem mill zero-position adjusting method with rolling force protection effect | |
| CN106022966A (en) | Hydropower engineering safety monitoring data gross error processing method based on increment discrimination | |
| CN204523791U (en) | A kind of belt steel thickness real-time detection apparatus | |
| CN106287233A (en) | A kind of pipe network leakage method for early warning and system | |
| CN104101498A (en) | Real-time fault detection method and system of processing machine tool main shaft bearing | |
| CN105195807A (en) | Shearing method of flying shears | |
| CN104073621B (en) | A kind of method calculating continuous furnace slab burnup | |
| CN105363800A (en) | Precise plate shape value obtaining method based on sectional shape | |
| CN104942027A (en) | Method for detecting steel plate type through computer second-level data processing system | |
| Lee et al. | Computer-based alarm processing and presentation methods in nuclear power plants | |
| CN204247546U (en) | A kind of on-line checkingi falls bottle and treating apparatus | |
| CN104275353A (en) | Method for automatically identifying deviation of cold-rolled strips on basis of shape detection | |
| CN201443549U (en) | Protective device of hydraulic cylinder position sensor | |
| CN103235885B (en) | Thermal power plant ball mill pulverized coal preparation system based on Takagi-Sugeno Fuzzy rule goes out force prediction method | |
| CN103920722A (en) | Strip steel positioning method for hot continuous rolling mill flying shear | |
| CN103325065A (en) | Decision-making method for sampling for detection of quality safety of agricultural products | |
| CN205090957U (en) | Car processing bearing inner race ditch footpath and bore detection mechanism | |
| CN205352479U (en) | Main steam flow's of gas and steam combined cycle power plant measurement system | |
| CN204694651U (en) | The real-time digital detection system that a kind of pipeline inner oxide is piled up |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |
|
| WD01 | Invention patent application deemed withdrawn after publication |