CN108802749A - Strip steel deviation measuring method for continuous strip steel hot galvanizing air knife section - Google Patents
Strip steel deviation measuring method for continuous strip steel hot galvanizing air knife section Download PDFInfo
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- CN108802749A CN108802749A CN201810611254.5A CN201810611254A CN108802749A CN 108802749 A CN108802749 A CN 108802749A CN 201810611254 A CN201810611254 A CN 201810611254A CN 108802749 A CN108802749 A CN 108802749A
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- strip
- running deviation
- measurement
- strip steel
- air knife
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 238000005246 galvanizing Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 65
- 238000012545 processing Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention provides a method for measuring strip steel deviation of a hot galvanizing air knife section of continuous strip steel, wherein a strip steel deviation detector is arranged on the operation side or the transmission side of the hot galvanizing air knife section of the continuous strip steel, the strip steel deviation detector comprises a laser ranging sensor and a linear sliding table module, a bracket is arranged above a sliding block of the linear sliding table module, and the laser ranging sensor is arranged above the bracket; the linear sliding table module is driven by a stepping motor or a servo motor, a sliding table sliding block drags the laser ranging sensor to reciprocate, and the position of the strip steel is measured in the moving process; and a high-precision laser ranging sensor is adopted to detect the transverse and normal positions of the strip steel of the air knife section, and the transverse deviation and the normal deviation of the strip steel are calculated, so that the positions of the air knife and the correcting roller can be adjusted in time, and the thickness uniformity of a strip steel coating is improved.
Description
Technical field
The present invention relates to continuous belt steel galvanizing production technical field, more particularly to a kind of continuous belt steel galvanizing air knife section
Strip running deviation measuring method.
Background technology
In continuous belt steel galvanizing production process, due to sinking roller abrasion, belt plate shape are bad etc., air knife section is caused
Strip deviates target location, and strip running deviation phenomenon occurs.Under strip hot-dip galvanizing air knife section working condition, it is difficult to be known by naked eyes
Other strip running deviation amount, while sensor detection strip running deviation amount can not be also installed near air knife, thus can not adjust in time strong
The gentle cutter position of positive roller, makes strip be in the center of air knife.Continuous belt steel galvanizing air knife section strip steel sideslip will lead to band
Steel upper and lower surface and lateral thickness of coating are uneven, influence the surface quality and performance of product.
In the prior art, continuous belt steel galvanizing air knife section strip steel sideslip measurement mainly uses induction strip
The method of edge detection calculates strip transverse direction running deviation value.Since detection device is under worst hot case, reliability and use the longevity
Life will all be affected, while detection device investment cost is higher, using also not extensive in some small and medium-sized manufacturing enterprises.
Invention content
In order to solve the problems, such as described in background technology, the present invention provides a kind of continuous belt steel galvanizing air knife section strip steel sideslip
Measuring method, using high-precision laser range-finding sensor, detection air knife section strip steel is laterally and normal direction position, calculating strip are lateral
Running deviation value and strip normal direction running deviation value improve strip coating thickness evenness in order to adjust air knife and correct roller position in time.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of continuous belt steel galvanizing air knife section strip steel sideslip measuring method, includes the following steps：
Step 1: strip running deviation amount detector, institute is arranged in the fore side or transmission side in continuous belt steel galvanizing air knife section
The strip running deviation amount detector stated includes laser range sensor and straight line slide unit module, above the sliding block of straight line slide unit module
Laser range sensor is installed in mounting bracket, holder top；Straight line slide unit module is driven by stepper motor or servo motor, slide unit
Sliding block drags laser range sensor and moves back and forth, and strip position is measured in motion process；
The laser range sensor runs transverse center face lmm apart from strip, and laser beam height position is in air knife knife
Hmm above lip；Straight line slide unit module stroke smm, midstroke is on strip operation normal direction median plane；
Step 2: strip running deviation measurement
Step 201 defines measurement range first, and strip width wmm, air knife knife lip to belt steel surface distance is d,
Slide position measurement rangeStrip position measurement range
Wherein：αmaxStrip normal direction running deviation value limiting value, | αmax| 8~12mm of value range；
βmaxStrip transverse direction running deviation value limiting value, | βmax| 50~200mm of value range；
N measurement point, n value ranges 100~200 are sampled in measurement range, slide position is respectively (d1, d2...,
dn), corresponding strip position measurements are respectively (l1, l2..., ln), strip position measurements are input to signal processing list
Member；
Step 202, strip transverse direction sideslip measurement record the strip position minimum value l in measurement rangemin, calculate strip
Lateral position running deviation value β：
By?：
Step 203, strip normal direction sideslip measurement, using the normal direction running deviation value near strip transverse center point as strip
Normal direction running deviation value records the measurement point data (l near strip transverse center pointmid, dmid), calculate strip normal direction position running deviation value
α；
By?：
Step 204, belt plate shape measure, and effective range l is determined according to strip position measurementmin~(lmin+
W), effective measurement point is screened in effective range, and calculate each effective measurement point strip normal direction position running deviation value and
Strip lateral position, screening obtain effective measurement point；Using strip lateral position as abscissa, it is with strip normal direction position running deviation value
Ordinate, using least square fitting belt plate shape linearity curve.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the present invention proposes a kind of continuous belt steel galvanizing air knife section strip steel sideslip measuring method, realizes continuous belt steel
Strip running deviation measurement under galvanizing air knife section worst hot case, principle is simple, at low cost, is convenient for commercial Application.
2, it using high-precision laser range-finding sensor telemeasurement continuous hot galvanizing air knife section strip steel running deviation value, realizes high
Strip running deviation value measures under warm operating mode, substitutes existing induction measurement method.
Description of the drawings
Fig. 1 is the strip running deviation amount detector scheme of installation of the present invention；
Fig. 2 is the belt plate shape linear diagram of the embodiment of the present invention.
Wherein：1- strip 2- air knife 3- straight line slide unit module 4- laser range sensors.
Specific implementation mode
Specific implementation mode provided by the invention is described in detail below in conjunction with attached drawing.
Step 1: as shown in Figure 1, strip running deviation amount is arranged in fore side or transmission side in continuous belt steel galvanizing air knife section
Detector, the strip running deviation amount detector includes laser range sensor 4 and straight line slide unit module 3, in straight line slide unit mould
Laser range sensor 4 is installed in mounting bracket above the sliding block of group 3, holder top；Straight line slide unit module 3 is by stepper motor or watches
Motor driving is taken, slide unit sliding block drags laser range sensor 4 and moves back and forth, and 1 position of strip is measured in motion process；
The laser range sensor 4 runs transverse center face lmm apart from strip 1, and laser beam height position is in air knife 2
Hmm above knife lip；3 stroke smm of straight line slide unit module, midstroke are run in strip 1 on normal direction median plane；
Stepper motor or the servo motor driving of the laser range sensor 4 and straight line slide unit module 3 are controlled by PLC
Device processed carries out signal processing and automatically controls.Then need separately be furnished with servo between PLC controller and motor using servo motor
Driver.
Step 2: strip running deviation measurement
Step 201 defines measurement range first, and 1 width of strip is wmm, and 2 knife lip of air knife to 1 surface distance of strip is d,
3 position measurement range of sliding block1 position measurement range of strip
Wherein：αmaxStrip normal direction running deviation value limiting value, | αmax| 8~12mm of value range；
βmaxStrip transverse direction running deviation value limiting value, | βmax| 50~200mm of value range；
N measurement point, n value ranges 100~200 are sampled in measurement range, 3 position of sliding block is respectively (d1, d2...,
dn), 1 position measurements of corresponding strip are respectively (l1, l2..., ln), 1 position measurements of strip are input to signal processing list
Member；
Step 202, strip transverse direction sideslip measurement record the 1 position minimum value l of strip in measurement rangemin, calculate band
1 lateral position running deviation value β of steel：
By?：
Step 203, strip normal direction sideslip measurement, using the normal direction running deviation value near 1 transverse center point of strip as band
Steel normal direction running deviation value records the measurement point data (l near 1 transverse center point of stripmid, dmid), it calculates 1 normal direction position of strip and runs
Deviator α；
By?：
Step 204, belt plate shape measure, and effective range l is determined according to 1 position measurement of stripmin~(lmin+
W), effective measurement point is screened in effective range, and calculate each effective measurement point 1 normal direction position running deviation value of strip and
1 lateral position of strip, screening obtain effective measurement point；Using 1 lateral position of strip as abscissa, with 1 normal direction position sideslip of strip
Amount is ordinate, using least square fitting belt plate shape linearity curve.
Specific embodiment：
Transverse center face l=5000mm is run apart from strip with laser range sensor, laser beam height position is in air knife
H=50mm above knife lip；For straight line slide unit module stroke s=100mm, it is as follows to calculate strip running deviation amount：
1, measurement range is defined first, and strip width w=1000mm, air knife knife lip to belt steel surface distance is d=
10mm, | αmax|=10mm, | βmax|=100mm, slide position measurement range Strip position measurement range 100 measurement points are sampled in measurement range, slide position is respectively (d1, d2...,
d100), corresponding strip position measurements are respectively (l1, l2..., l100), strip position measurements are input to signal processing list
Member；
2, strip transverse direction sideslip measurement records the strip position minimum value l in measurement rangemin=4520mm calculates band
Steel lateral position running deviation value β：
By?：
By strip measured value lnIt is converted into strip lateral position ln’:l'n=ln-lmin；
3, strip normal direction sideslip measurement is run using the normal direction running deviation value near strip transverse center point as strip normal direction
Deviator records the measurement point data (l near strip transverse center pointmid, dmid) it is (5020mm, 49mm), calculate strip normal direction
Position running deviation value α；
By?：
4, belt plate shape measures, and effective range l is determined according to strip position measurementmin~(lmin+ w) be
(4520mm~5520mm) screens effective measurement point in effective range, and calculates the strip method of each effective measurement point
To position running deviation value and strip lateral position, screening obtains effective measurement point, is shown in Table 1：
Table 1
| Lateral position | 0 | 50 | 160 | 360 | 430 | 500 | 580 | 760 | 910 | 980 |
| Normal direction running deviation value | -1.25 | -1.22 | -1.19 | -1.17 | -1.16 | -1.15 | -1.14 | -1.12 | -1.09 | -1.06 |
As shown in Fig. 2, using strip lateral position as abscissa, using strip normal direction position running deviation value as ordinate, using most
Small square law is fitted belt plate shape linearity curve.
5, it is shown in man-machine interface, for operative employee or automatically controls foundation is provided.
Above example is being implemented down based on the technical solution of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
It is conventional method not mentionlet alone bright.
Claims (1)
1. a kind of continuous belt steel galvanizing air knife section strip steel sideslip measuring method, which is characterized in that include the following steps：
Step 1: strip running deviation amount detector is arranged in the fore side or transmission side in continuous belt steel galvanizing air knife section, it is described
Strip running deviation amount detector includes laser range sensor and straight line slide unit module, is installed above the sliding block of straight line slide unit module
Laser range sensor is installed in holder, holder top；Straight line slide unit module is driven by stepper motor or servo motor, slide unit sliding block
It drags laser range sensor to move back and forth, strip position is measured in motion process；
The laser range sensor runs transverse center face lmm apart from strip, and laser beam height position is on air knife knife lip
Square hmm；Straight line slide unit module stroke smm, midstroke is on strip operation normal direction median plane；
Step 2: strip running deviation measurement
Step 201 defines measurement range first, and strip width wmm, air knife knife lip to belt steel surface distance is d,
Slide position measurement rangeStrip position measurement range
Wherein：αmaxStrip normal direction running deviation value limiting value, | αmax| 8~12mm of value range；
βmaxStrip transverse direction running deviation value limiting value, | βmax| 50~200mm of value range；
N measurement point, n value ranges 100~200 are sampled in measurement range, slide position is respectively (d1, d2..., dn), it is right
The strip position measurements answered are respectively (l1, l2..., ln), strip position measurements are input to signal processing unit；
Step 202, strip transverse direction sideslip measurement record the strip position minimum value l in measurement rangemin, it is lateral to calculate strip
Position running deviation value β：
By?：
Step 203, strip normal direction sideslip measurement, using the normal direction running deviation value near strip transverse center point as strip normal direction
Running deviation value records the measurement point data (l near strip transverse center pointmid, dmid), calculate strip normal direction position running deviation value α；
By?：
Step 204, belt plate shape measure, and effective range l is determined according to strip position measurementmin~(lmin+ w),
The effective measurement point of screening in effective range, and calculate the strip normal direction position running deviation value and strip cross of each effective measurement point
To position, screening obtains effective measurement point；It is vertical sit with strip normal direction position running deviation value using strip lateral position as abscissa
Mark, using least square fitting belt plate shape linearity curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611254.5A CN108802749B (en) | 2018-06-14 | 2018-06-14 | Strip steel deviation measuring method for continuous strip steel hot galvanizing air knife section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611254.5A CN108802749B (en) | 2018-06-14 | 2018-06-14 | Strip steel deviation measuring method for continuous strip steel hot galvanizing air knife section |
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| Publication Number | Publication Date |
|---|---|
| CN108802749A true CN108802749A (en) | 2018-11-13 |
| CN108802749B CN108802749B (en) | 2019-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111926277A (en) * | 2020-09-07 | 2020-11-13 | 山东钢铁集团日照有限公司 | Device and method for inhibiting vibration of hot-dip galvanized strip steel after being discharged from zinc pot |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05154510A (en) * | 1991-11-29 | 1993-06-22 | Kawasaki Steel Corp | Method and instrument for detecting shape of welded part at butt-welding |
| JPH0829147A (en) * | 1994-07-12 | 1996-02-02 | Nippon Steel Corp | Method for measuring flatness of steel plate |
| CN205802574U (en) * | 2016-06-27 | 2016-12-14 | 攀钢集团攀枝花钢钒有限公司 | Prevent galvanizing unit strip steel from running the automatic reduction of speed control system of sideslip broken belt |
| CN106269913A (en) * | 2015-05-28 | 2017-01-04 | 鞍钢股份有限公司 | Method for preventing strip steel from deviating for working roll transverse moving rolling mill |
| CN107127218A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | Method for determining width and deviation of strip steel according to radial force measured by plate-shaped roller |
| CN206818163U (en) * | 2017-06-07 | 2017-12-29 | 唐山国丰钢铁有限公司 | A kind of galvanizing printed line air knife angle and width of measuring device |
-
2018
- 2018-06-14 CN CN201810611254.5A patent/CN108802749B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05154510A (en) * | 1991-11-29 | 1993-06-22 | Kawasaki Steel Corp | Method and instrument for detecting shape of welded part at butt-welding |
| JPH0829147A (en) * | 1994-07-12 | 1996-02-02 | Nippon Steel Corp | Method for measuring flatness of steel plate |
| CN106269913A (en) * | 2015-05-28 | 2017-01-04 | 鞍钢股份有限公司 | Method for preventing strip steel from deviating for working roll transverse moving rolling mill |
| CN107127218A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | Method for determining width and deviation of strip steel according to radial force measured by plate-shaped roller |
| CN205802574U (en) * | 2016-06-27 | 2016-12-14 | 攀钢集团攀枝花钢钒有限公司 | Prevent galvanizing unit strip steel from running the automatic reduction of speed control system of sideslip broken belt |
| CN206818163U (en) * | 2017-06-07 | 2017-12-29 | 唐山国丰钢铁有限公司 | A kind of galvanizing printed line air knife angle and width of measuring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111926277A (en) * | 2020-09-07 | 2020-11-13 | 山东钢铁集团日照有限公司 | Device and method for inhibiting vibration of hot-dip galvanized strip steel after being discharged from zinc pot |
| CN111926277B (en) * | 2020-09-07 | 2022-11-01 | 山东钢铁集团日照有限公司 | Device and method for inhibiting vibration of hot-dip galvanized strip steel after being discharged from zinc pot |
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