CN1061908C - Anti-interference method and device for width measuring instrument used in hot rolling, finish rolling and winding. - Google Patents
Anti-interference method and device for width measuring instrument used in hot rolling, finish rolling and winding. Download PDFInfo
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- CN1061908C CN1061908C CN 97116811 CN97116811A CN1061908C CN 1061908 C CN1061908 C CN 1061908C CN 97116811 CN97116811 CN 97116811 CN 97116811 A CN97116811 A CN 97116811A CN 1061908 C CN1061908 C CN 1061908C
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- width gage
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Abstract
The present invention relates to an anti-interference method and a device for hot-rolling, fine-rolling and winding width measurer. The width measurer is started to measure width when strip steel leaves the last rolling machine; the work of the width measurer is controlled by a control computer according to the following judgment steps that if the last rolling machine of a hot-rolling machine group bites steel, if strip steel exists on a roller way after a certain delay time, the width measurer is started to work; else if the rolling machine does not bite steel and the cooling water of the roller way is not sprayed out, the width measurer waits to work. Because the present invention improves the control mode of the width measurer, the interference of side water spray, roller way cooling water, steam fog and iron oxide scale on the light path of the width measurer is decreased on the device; the time of erroneous judgment can be decreased; the measurement precision is enhanced.
Description
The present invention relates to a kind of method and device of measuring width, especially for the finish rolling of hot-strip production process, batch width gage anti-interference method and device on the line.
At present, the wide technology of the survey of hot-strip is to adopt special-purpose width gage, and this instrument is placed the top of steel plate, below the roller-way of steel plate backlight is arranged, and when not having the band steel in the visual field, width gage is in holding state; When the band steel is arranged in the visual field, when the light of backlight is blocked, the software of width gage itself sends the signal enabling width gage of " the band steel is arranged in the visual field " and starts working, the light and shade of accepting backlight light by photoelectricity coupling array (CCD) scanning element on the width gage contrasts, and calculates the developed width of obtaining the band steel according to trigonometry formula and thermal compensation theory.Because hot-strip needs big water gaging to cool off, cause the width gage light path often to be full of a large amount of water vapours, water vapour produces barrier effect to the light that backlight sends, form certain light and shade contrast, cause that width gage sends misoperation when differentiation has or not the band steel, promptly when not having the output of band steel, send the signal of " the band steel is arranged in the visual field "; Simultaneously, the roller-way cooling water overflows opens the iron scale that flows on the backlight and accumulate on the backlight etc., also causes width gage work undesired, and frequent misoperation causes host computer can't carry out data setting, even can't operate as normal.To this, prior art is generally only studied surveying wide precision from the principle of measuring, and does not have to consider to overcome under existing situation, environment the settling mode of environmental disturbances.
The objective of the invention is to obtain a kind of width gage anti-disturbance method and device, can under existing environment, overcome the influence of surrounding environment, eliminate the misoperation of width gage, improve certainty of measurement width gage.
For achieving the above object, the technical solution of the present invention's proposition is:
A kind of hot fine rolling batches the width gage anti-interference method, be the band steel start when leaving last rolling mill width gage survey wide, be by the control computer through the work of following determining step control width gage:
Last rolling mill as the hot rolling unit is stung steel, then through after one section time-delay, if the band steel is arranged on the roller-way, then starts width gage work, if be not with steel on the roller-way, then width gage is treated work,
Otherwise, do not sting steel as milling train, and the cooling water of roller-way do not spray, start width gage and treat work, do not sting steel as milling train, the cooling water of roller-way sprays then width gage and does not work.
Delay control method is: at head, the afterbody of band steel, go out required hysteresis, leading time according to the distance computation of the band speed of steel and last rolling mill and width gage.
The signal that milling train is stung steel is to sting steel when the roll-force variation is above certain value, is rolling effective.
Survey " allow measure " the interface input width gage of wide effective signal through width gage.
A kind of hot fine rolling batches surveys wide device, and it comprises: be installed in the camera 1 in the casing 2, backlight 9 is positioned at roller-way 4 belows, and there is cooling water pipe 5 roller-way 4 belows, is equipped with between cooling water pipe 5 and the backlight 9 and hides water deflector 6.
Casing 2 belows are equipped with and are purged kuppe [8] and purging motor 10.
Below in conjunction with drawings and Examples the present invention is done and to describe in further detail:
Fig. 1 batches width gage anti-interference method flow chart for hot fine rolling of the present invention.
Fig. 2 batches width gage means for anti-jamming structural representation for hot fine rolling of the present invention.
Fig. 3 is the right side view of Fig. 1, (band steel direction of motion view).
The present invention learns from the principle analysis of width gage: what cause that the width gage misoperation is many, certainty of measurement is not high is because factors such as water, steam and iron scale the environment.Therefore key of the present invention is: survey wide by himself controlling to change into by basic automatization control computer control starting working of width gage, several signals are comprehensively judged, when all satisfying, each condition sends the permission measuring command, through " measuring effectively " interface input width gage of width gage.In present width gage, this contact is made width gage without any condition restriction by short circuit, forces its closure, promptly is in the measurement pattern state always, utilizes the work of the software control width gage of width gage itself in use.At this moment, any steam, water smoke, dust etc. all may make the decision mechanism running of system in the width gage visual field, cause the result who is judged as steel.
As shown in Figure 1, the work of the control computer control width gage that employing of the present invention is relevant with the milling train governor motion, the signal of its input has:
1. the roll-force changing value of last rolling mill: when promptly the variation of stinging steel or throwing steel, roll-force when milling train surpassed certain amplitude, the level signal of generation was sent into the control computer,
2. the signal of not spraying water of the cooling water in the control computer,
3. by being positioned at the signal that the band steel is arranged on the roller-way detected roller-way of photoelectric detector up and down.
Above-mentioned several signals judge that in computer deterministic process is: if having band steel or the outer cooling water of roller-way not to spray in the visual field, width gage can be measured the band steel, and width gage is in measurement pattern; And do not have the band steel in the visual field, or the outer cooling water ejection of roller-way is arranged, then width gage can not be measured, and is in standby mode.After above-mentioned judgement is finished, as satisfy condition and just produce one and survey wide effective signal, this method has adopted all fronts tracking signal of part rolling line, integrated treatment in computer, provide a relay tip and open/close signal, " allowing to measure " contact input from the computer outgoing cable to width gage starts width gage work.
Consider that the band steel needs certain hour from last rolling mill to width gage, therefore leave last rolling mill and start working that one section time-delay will be arranged to width gage from the band steel.For stinging steel, be with steel just to go out milling train this moment, but also do not arrive width gage, the time of the outlet from the width gage to the milling train of should delaying time; For throwing steel,, could make width gage quit work after must delaying time because be with steel also not leave width gage this moment.The control of this time length is to obtain required time-delay by the speed of band steel and the distance computation between milling train and the width gage.
In order further to eliminate the interference owing to the splash of roller-way cooling water, the present invention improves on equipment, referring to Fig. 2,3, camera 1 places casing 2, the casing below can purge to light path between the camera backlight for purging kuppe 8, and the residing measurement of camera is got a clear view, be band steel 3 below, band steel 3 bottoms are roller-ways 4, are that cooling water pipe 5,7 is a backlight below the roller- way 4,9 is source water spray backlight, is used to clean backlight glass.To being improved to of equipment: hide water deflector 6 installing above the backlight 7 and between the cooling water pipe 5, it is fuzzy to reduce the random camera visual field of causing of splashing of original roller cooling water, and the erroneous judgement of reduction system has the probability of steel, the precision of improvement system reality.Like this, just can eliminate the width gage erroneous judgement that major part causes owing to cooling water, water vapour.
At the scene of width gage work, if accumulated on the backlight when having a large amount of iron scale on more iron scale or the width gage light path, also will form strong light and shade contrast, cause width gage work undesired, influence the accuracy of measured value.Therefore the present invention has been installed purging kuppe 8 and purging motor 10 additional below shooting casing 2, can reduce the influence to the shooting visual field such as external dirt such as dust, iron scale etc.
Width gage of the present invention is owing to reduced the interference of side water spray, barber and iron scale on the width gage light path, the anti-water of width gage system and the ability that bears dirty have been improved, improve the certainty of measurement of width gage greatly, can reach 0.5% certainty of measurement substantially, and significantly reduced the number of times of erroneous judgement.The present invention is owing to improved the control mode of width gage, also reduced width gage because the erroneous judgement that the roller cooling water brings, have the misoperation of original average every block of band steel to reach for 25 times and eliminate erroneous judgement fully, this method also applicable to steel rolling mill other with the wide relevant equipment of survey.
Claims (6)
1. a hot fine rolling batches the width gage anti-interference method, is to start width gage when leaving last rolling mill at the band steel to survey widely, it is characterized in that:
Control width gage work by the control computer through following determining step:
Last rolling mill as the hot rolling unit is stung steel, then through after the required hysteresis of head, afterbody of band steel, the leading one section time-delay, if the band steel is arranged on the roller-way, then starts width gage work, if be not with steel on the roller-way, then width gage is treated work,
Otherwise, do not sting steel as milling train, and the cooling water of roller-way not spraying, width gage is treated work, does not sting steel as milling train, the roller-way cooling water sprays then width gage and does not work.
2. batch the width gage anti-interference method according to the described hot fine rolling of claim 1, it is characterized in that: described delay control method is: at band steel toe, afterbody, go out required hysteresis, leading time according to the distance computation of the speed of band steel and last rolling mill and width gage.
3. batch the width gage anti-interference method according to the described hot fine rolling of claim 1, it is characterized in that: the signal that described milling train is stung steel is to sting steel when the roll-force variation is above certain value.
4. a hot fine rolling batches the width gage anti-interference method, it is characterized in that: the wide effective signal of described survey is through " allowing to measure " interface input width gage of width gage.
5. a hot fine rolling batches the width gage means for anti-jamming, it comprises: be installed in the interior camera of casing [2] [1], backlight [9] is positioned at roller-way [4] below, there is cooling water pipe [5] roller-way [4] below, and it is characterized in that: this device also comprises: the water deflector [6] of screening is arranged between cooling water pipe [5] and the backlight [9].
6. batch the width gage means for anti-jamming according to the described hot fine rolling of claim 5, it is characterized in that: described casing [2] below is equipped with and is purged kuppe [8] and purging motor [10].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97116811 CN1061908C (en) | 1997-08-28 | 1997-08-28 | Anti-interference method and device for width measuring instrument used in hot rolling, finish rolling and winding. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97116811 CN1061908C (en) | 1997-08-28 | 1997-08-28 | Anti-interference method and device for width measuring instrument used in hot rolling, finish rolling and winding. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1182204A CN1182204A (en) | 1998-05-20 |
| CN1061908C true CN1061908C (en) | 2001-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97116811 Expired - Fee Related CN1061908C (en) | 1997-08-28 | 1997-08-28 | Anti-interference method and device for width measuring instrument used in hot rolling, finish rolling and winding. |
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| Country | Link |
|---|---|
| CN (1) | CN1061908C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI614480B (en) * | 2016-12-05 | 2018-02-11 | Optical film width line measuring device and measuring method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293164B (en) * | 2013-05-22 | 2015-09-23 | 山西太钢不锈钢股份有限公司 | Surfaces of Hot Rolled Strip somascope anti-dazzle method |
| CN104324952B (en) * | 2014-09-05 | 2016-04-27 | 山西太钢不锈钢股份有限公司 | Hot continuous rolling thin specification rolling machine frame load relay control method |
| CN111947071A (en) * | 2020-08-18 | 2020-11-17 | 宝钢湛江钢铁有限公司 | Backlight source for hot rolling line width gauge |
-
1997
- 1997-08-28 CN CN 97116811 patent/CN1061908C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI614480B (en) * | 2016-12-05 | 2018-02-11 | Optical film width line measuring device and measuring method |
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| Publication number | Publication date |
|---|---|
| CN1182204A (en) | 1998-05-20 |
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Owner name: BAOSHAN IRON & STEEL CO., LTD. Free format text: FORMER NAME OR ADDRESS: SHANGHAI BAO STEEL GROUP IRON AND STEEL CO LTD Owner name: SHANGHAI BAO STEEL GROUP IRON AND STEEL CO LTD Free format text: FORMER NAME OR ADDRESS: BAOSHAN STEEL GROUP IRON AND STEEL CO LTD |
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Address after: 201900, Fujin Road, Shanghai, Baoshan District orchard Patentee after: BAOSHAN IRON & STEEL Co.,Ltd. Address before: 200122 No. 370 Pu circuit, Shanghai, Pudong New Area Patentee before: BAOSHAN IRON & STEEL CO.,LTD. Address after: 200122 No. 370 Pu circuit, Shanghai, Pudong New Area Patentee after: BAOSHAN IRON & STEEL CO.,LTD. Address before: 201900 No. 1, Middle Road, Baoshan District, Shanghai Patentee before: Baosteel Group Corporation |
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Granted publication date: 20010214 Termination date: 20130828 |