CN116144915B - Control method for automatically optimizing tapping position accuracy of heating furnace - Google Patents
Control method for automatically optimizing tapping position accuracy of heating furnace Download PDFInfo
- Publication number
- CN116144915B CN116144915B CN202211595076.4A CN202211595076A CN116144915B CN 116144915 B CN116144915 B CN 116144915B CN 202211595076 A CN202211595076 A CN 202211595076A CN 116144915 B CN116144915 B CN 116144915B
- Authority
- CN
- China
- Prior art keywords
- tapping
- slab
- claw
- insertion position
- ref
- 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.)
- Active
Links
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 107
- 238000010438 heat treatment Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 27
- 210000000078 claw Anatomy 0.000 claims abstract description 61
- 238000003780 insertion Methods 0.000 claims abstract description 52
- 230000037431 insertion Effects 0.000 claims abstract description 52
- 238000012937 correction Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/70—Furnaces for ingots, i.e. soaking pits
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
本发明提供一种加热炉自动优化出钢位置精度的控制方法，通过在加热炉炉外辊道传动侧设置高温激光测距仪，对出钢板坯的位置和倾斜量进行检测。根据检测位置自动优化、纠正出钢位置精度。可解决由于加热炉炉内板坯跟踪不准或板坯变形、倾斜造成出钢定位不准或者出现掉坯、刮辊道护板等事故。包括：通过在加热炉炉外辊道传动侧设置多个高温激光测距仪检测的板坯前沿距离进行偏差比较，判断板坯是否倾斜，计算出钢机爪原始位置与待出板坯前沿的距离，计算出钢机爪的插入位置的修正值和出钢机爪的应插入位置；判断应插入位置与炉内跟踪的板坯位置计算的原插入位置是否有偏差，若偏差小于设定值，则认为应插入位置REF的数据有效。
The present invention provides a control method for automatically optimizing the tapping position accuracy of a heating furnace. A high-temperature laser rangefinder is arranged on the roller transmission side outside the heating furnace to detect the position and tilt of the tapping slab. The tapping position accuracy is automatically optimized and corrected according to the detected position. Accidents such as inaccurate tapping positioning or slab falling or scraping of roller guard plates caused by inaccurate slab tracking in the heating furnace or deformation and tilt of the slab can be solved. The method includes: comparing the deviation of the front distance of the slab detected by arranging multiple high-temperature laser rangefinders on the roller transmission side outside the heating furnace to determine whether the slab is tilted, calculating the distance between the original position of the tapping machine claw and the front edge of the slab to be tapped, calculating the correction value of the insertion position of the tapping machine claw and the position where the tapping machine claw should be inserted; determining whether there is a deviation between the position to be inserted and the original insertion position calculated by tracking the slab position in the furnace, and if the deviation is less than the set value, the data of the position to be inserted REF is considered valid.
Description
Technical Field
The invention relates to the technical field of control methods of heating furnaces, in particular to a control method for automatically optimizing tapping position accuracy of a heating furnace.
Background
The hot rolling line heating furnace heats the continuous casting incoming material plate blank to enable the plate blank to reach the target temperature suitable for rolling. The slab is drawn out from the heating furnace and is first sent to a roughing mill for rolling.
Tracking the plate blank in the heating furnace mainly records the action times of the walking beam to carry out tracking calculation. The walking beam starts to perform circulation from the original position, namely, ascending, advancing, descending and retreating. The billet is advanced in the furnace by a step (≡500 mm), which is a commonly used mode of operation. The laser detector is arranged near the discharge of the heating furnace to detect the arrival of the slab, and the action steps of the walking beam are approximately consistent each time, so that the billet can be tracked by calculating the steps. However, certain errors exist in the action process of the walking beam, the shapes of slabs of different steel types in the furnace are different, the problems of head-tail sagging, waist collapse and the like of some mild steels are easy to occur, and the laser detector also has errors for detecting high-temperature slabs in the furnace. The plate blank with uneven feeding materials in the furnace can be scraped to the water beam cushion block in part, so that the plate blank is not correct and tracking is not correct. When the tapping conditions are met, the steel billets are pulled out from the furnace by the tapping machine and put on the tapping roller way, and the slabs with different widths are positioned on the central line of the roller way on the tapping roller way, so that the rolling of the roughing mill is facilitated. At present, no accurate detection means exists for tracking the position of the plate blank in the heating furnace, and the position of the plate blank is judged only through a calculation mode, so that the accuracy is low. When tapping, errors are easy to occur in the action of the tapping machine, so that billets fall to a tapping roller way and are not scraped to a roller way guard plate at the central position, and serious accidents of billet falling and crushing equipment can occur.
Therefore, the control precision of the automatic tapping position is improved, the roller way guard plate is prevented from being scraped, the major accident of blank dropping is avoided, and the automatic tapping position is very urgent. Has obvious significance for the subsequent rolling line to roll the slab and improve the quality of the hot rolled strip steel. At present, measures are often taken at home and abroad to improve the furnace hole of the tapping laser detector or periodically replace and reinstall the laser detector to improve the stability, and the effect is not very good.
Therefore, three sets of high-temperature laser rangefinders are added on the transmission side of the roller way outside each heating furnace, and the position and the inclination amount of the steel slab are detected. And a control method for automatically optimizing the tapping position accuracy of the heating furnace is independently developed, so that the control method has important significance.
Disclosure of Invention
In order to solve the technical problems of the background technology, the invention provides a control method for automatically optimizing the tapping position accuracy of a heating furnace, and the position and the inclination amount of a tapping plate blank are detected by arranging a high-temperature laser range finder on the transmission side of a roller way outside the heating furnace. And automatically optimizing and correcting the tapping position precision according to the detection position. The method can solve the problems that the positioning of tapping is inaccurate or the billet is dropped, a roller way guard plate is scraped and the like due to inaccurate tracking of the billet in the heating furnace or deformation and inclination of the billet.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a control method for automatically optimizing tapping position accuracy of a heating furnace comprises the following steps:
Step 1, arranging a plurality of high-temperature laser range finders on the transmission side of a roller way outside a heating furnace;
Step 2, performing deviation comparison on the front edge distances L1 and L2 of the slab detected by the high-temperature laser range finders and Ln, and judging the inclination state of the slab;
Step 3, when the deviation among a plurality of measured values is larger than a threshold, performing interlocking protection, not allowing automatic tapping, and performing alarm;
when the deviation among the measured values is not larger than a threshold, the following steps are carried out:
Step 301, calculating distances delta 1-delta n between the original position of the tapping machine claw and the front edge of the slab to be discharged by using the distances L1, L2 of the front edges of the slab detected by the high-temperature laser range finders, and calculating a correction value delta of the insertion position of the tapping machine claw according to the distances delta 1-delta n between the original position of the tapping machine claw and the front edge of the slab to be discharged;
step 302, calculating the position REF to be inserted of the tapping machine claw according to the corrected value delta of the insertion position of the tapping machine claw;
Step 303, judging whether the original insertion position lambda calculated by the position of the slab tracked in the furnace is deviated from the position of the to-be-inserted position REF, if the deviation is smaller than a set value, the data of the to-be-inserted position REF is considered to be valid, correcting and calculating the to-be-inserted position of the tapping machine claw, automatically extracting steel according to the corrected insertion position, and if not, automatically extracting steel according to the original insertion position lambda without correcting.
Further, the step2 specifically includes the following steps:
when the tapping furnace door is at a high position, a plurality of high-temperature laser range finders detect the front edge distance of the slab simultaneously: L1L 2. Once again, in the case of a.ln, unit mm;
when the L1 and the L2 are within the set value range, the condition that the range finder detects the normal condition is met, otherwise, the range finder detects the abnormal condition, namely the edge of the slab is not detected; removing abnormal data;
Calculating the deviation value |L1-L2|=D1 between every two data in the normal data L1-L3 =d2L 2-L3|=d3. L (m-1) -lm|=dk; m is the number of effective data after abnormal data are removed, and k is the number of deviation values;
When there is a deviation between D1, D2.. At the moment, a slab deviation alarm is sent to production personnel, and automatic steel drawing is not allowed.
Further, the step 301 specifically includes the following steps:
In the following formula: delta is a correction value of the insertion position of the tapping machine claw; Δ1- Δn is the distance between the original position of the tapping machine claw obtained by a plurality of high-temperature laser rangefinders and the front edge of the slab to be discharged, and the unit is mm; L1-Ln are slab front edge distance units mm detected by a plurality of high-temperature laser range finders; a plurality of high-temperature laser distance measuring instruments of alpha 1-alpha n are positioned at the original positions of the steel tapping machine claw in units of mm;
Δ1＝L1-α1
Δ2＝L2-α2
......
Δn＝Ln-αn
Δ＝(Δ1+Δ2+......+Δn)/n。
Further, when one or more high-temperature laser rangefinders at the end cannot measure the slab due to the slab length, invalid data in the slab distance L1-Ln measured by the high-temperature laser rangefinder is removed, and then the correction value delta of the insertion position of the tapping machine claw is calculated, wherein the correction value delta is calculated:
Δ1＝L1-α1
Δ2＝L2-α2
......
Δm＝Lm-αm
Delta= (Δ1+Δ2+), where m is the effective number of distances to the slab that the high temperature laser rangefinder can measure.
Further, the step 302 specifically includes the following steps:
the position REF of the jaw of the tapping machine, in mm, is calculated as follows:
REF＝Δ+3/4·W
w is the width of the blank, from the material tracking, in mm.
Further, the step 303 specifically includes the following steps:
the original insertion position of the tapping machine claw calculated by the plate blank position is lambda=lambda 0-lambda 1+3/4.W;
Wherein: the front edge of the claw of the tapping machine is at the original position 0;
the distance from the original bit 0 to the in-furnace laser detector LT/LR is: λ0, unit mm;
The distance between the leading edge of the billet and the in-furnace laser detector LT/LR is the in-furnace tracked slab position: λ1, unit mm;
The width of the blank is as follows: w, unit mm;
As a protection mechanism, prevent the range finder from detecting data having abnormality, when: the I REF-lambda I < A, A is a deviation revision set value, at the moment, the data is considered to be valid, the insertion position of the steel tapping machine claw is corrected, otherwise, the steel is automatically drawn according to the original insertion position lambda;
If the data is judged to be valid, the corrected insertion position lambda NEW of the tapping claw is calculated according to the insertion position REF of the tapping claw, and the unit mm is calculated.
Further, the corrected insertion position λ NEW of the tapping claw is calculated from the insertion position REF of the tapping claw, and is:
λNEW＝REF。
Further, the corrected insertion position λ NEW of the tapping claw is calculated from the insertion position REF of the tapping claw, and is:
Lambda NEW＝|REF-λ|/b+λλNEW is the corrected insertion position of the final tapping claw, and b is the correction factor.
Compared with the prior art, the invention has the beneficial effects that:
According to the control method for automatically optimizing the tapping position accuracy of the heating furnace, the high-temperature laser range finders are arranged on the transmission side of the roller way outside the heating furnace, and the position and the inclination amount of a tapping plate blank are detected. And automatically optimizing and correcting the tapping position precision according to the detection position. The method can solve the problems of inaccurate positioning of tapping or blank falling, roller way guard plate scraping and the like caused by inaccurate tracking of the blank in the heating furnace or deformation and inclination of the blank.
Drawings
FIG. 1 is a flow chart of a control method for automatically optimizing tapping position accuracy of a heating furnace according to the present invention;
FIG. 2 is a schematic diagram of the arrangement and parameter settings of a plurality of high temperature laser rangefinders of the present invention;
fig. 3 is a schematic view of parameter setting of the original insert position lambda calculation process of the slab position calculation tracked in the furnace of the present invention.
Detailed Description
The following detailed description of the embodiments of the invention is provided with reference to the accompanying drawings.
As shown in fig. 1, a control method for automatically optimizing tapping position accuracy of a heating furnace comprises the following steps:
step 1, as shown in fig. 2, arranging a plurality of high-temperature laser rangefinders F1, F2. on the transmission side of a roller way outside a heating furnace;
Step 2, performing deviation comparison on the front edge distances L1 and L2 of the slab detected by the high-temperature laser range finders and Ln, and judging the inclination state of the slab;
Step 3, when the deviation among a plurality of measured values is larger than a threshold, performing interlocking protection, not allowing automatic tapping, and performing alarm;
when the deviation among the measured values is not larger than a threshold, the following steps are carried out:
Step 301, calculating distances delta 1-delta n between the original position of the tapping machine claw and the front edge of the slab to be discharged by using the distances L1, L2 of the front edges of the slab detected by the high-temperature laser range finders, and calculating a correction value delta of the insertion position of the tapping machine claw according to the distances delta 1-delta n between the original position of the tapping machine claw and the front edge of the slab to be discharged;
step 302, calculating the position REF to be inserted of the tapping machine claw according to the corrected value delta of the insertion position of the tapping machine claw;
Step 303, judging whether the original insertion position lambda calculated by the position of the slab tracked in the furnace is deviated from the position of the to-be-inserted position REF, if the deviation is smaller than a set value, the data of the to-be-inserted position REF is considered to be valid, correcting and calculating the to-be-inserted position of the tapping machine claw, automatically extracting steel according to the corrected insertion position, and if not, automatically extracting steel according to the original insertion position lambda without correcting.
The step 2 specifically comprises the following steps:
When the tapping furnace door is at a high position, a plurality of high-temperature laser range finders detect the front edge distance of the slab simultaneously: l1, L2.
When the L1 and the L2 are within the set value range, the condition that the range finder detects the normal condition is met, otherwise, the range finder detects the abnormal condition, namely the edge of the slab is not detected; removing abnormal data; in this example 9000mm < L1) l2. Ln <1000mm is normal data.
Calculating the deviation value |L1-L2|=D1 between every two data in the normal data L1-L3 =d2L 2-L3|=d3. L (m-1) -lm|=dk; m is the number of effective data after abnormal data are removed, and k is the number of deviation values;
When there is a deviation between D1, D2.. At the moment, a slab deviation alarm is sent to production personnel, and automatic steel drawing is not allowed.
The step 301 specifically includes the following steps:
In the following formula: delta is a correction value of the insertion position of the tapping machine claw; Δ1- Δn is the distance between the original position of the steel claw obtained by a plurality of high-temperature laser rangefinders and the front edge of the slab to be discharged, and the unit is mm; L1-Ln is the distance of the front edge of the slab detected by a plurality of high-temperature laser rangefinders, and the unit is mm; the distances between the alpha 1-alpha n high-temperature laser range finders and the original positions of the steel tapping machine claw are in mm;
Δ1＝L1-α1
Δ2＝L2-α2
......
Δn＝Ln-αn
Δ＝(Δ1+Δ2+......+Δn)/n。
When one or more high-temperature laser rangefinders at the end cannot measure the slab due to the slab length P, invalid data in the slab distances L1-Ln measured by the high-temperature laser rangefinders are removed, and then the correction value delta of the insertion position of the tapping machine claw is calculated, wherein the correction value delta is calculated:
Δ1＝L1-α1
Δ2＝L2-α2
......
Δm＝Lm-αm
Delta= (Δ1+Δ2+), where m is the effective number of distances to the slab that the high temperature laser rangefinder can measure.
When the L1 and the L2 are within the set value range, the condition that the range finder detects the normal condition is met, otherwise, the range finder detects the abnormal condition, namely the edge of the slab is not detected; removing abnormal data; in this example 9000mm < L1) l2. Ln <1000mm is normal data.
In addition, in addition to using data anomaly to determine whether the high-temperature laser rangefinder detects a slab edge, the embodiment also provides a method for screening calculation data by using the current slab length and the steel-loading cloth mode, taking arranging 3 high-temperature laser rangefinders as an example, including the following steps:
When P.ltoreq.C and MODE is S:
Δ1＝L1-α1
Δ2＝L2-α2
Δ＝(Δ1+Δ2)/2
when P.ltoreq.C and MODE is N:
Δ3＝L3-α3
Δ2＝L2-α2
Δ＝(Δ3+Δ2)/2
when P > C:
Δ1＝L1-α1
Δ2＝L2-α2
Δ3＝L3-α3
Δ＝(Δ1+Δ2+Δ3)/3
Wherein: p is the length of the current slab, and the unit is mm; c is the shortest slab length (mm) which can be detected by the three high-temperature laser rangefinders, and the unit is mm; MODE is a steel-loading cloth MODE; s is a steel loading south side material distribution mode; n is the north cloth mode of steel loading.
The step 302 specifically includes the following steps:
the position REF of the jaw of the tapping machine to be inserted is calculated as follows:
REF＝Δ+3/4·W
w is the width of the blank in mm from material tracking.
The step 303 specifically includes the following steps:
first, the principle and process of calculating the slab position tracked in the original furnace are explained as follows:
on the tapping side of each heating furnace, a tapping laser detector LT/RT is arranged. The walking beam moves the slab in the furnace from the furnace inlet side direction to the furnace outlet side direction through the forward circulation (ascending-advancing-descending-retreating) action, and when the slab closest to the outlet (i.e. to be extracted and sent to the rolling line for rolling) passes through the step Liang Banyun, the walking beam shields the tapping laser detector LT/RT in the ascending position advancing process. And at the moment, calculating the value of the translation magnetic scale of the walking beam in an accumulated way until the advancing action of the walking beam is completed and the walking beam descends. When the walking beam advances, when the front edge signal of a billet close to the furnace end is captured by the laser detector LT/RT, the advancing displacement of the billet is detected and recorded, and meanwhile, after the walking beam walks through the step, the walking beam pauses the circulation and waits for tapping.
Original insertion position lambda=λ0- λ1+3/4·w calculated for slab position;
Wherein: the front edge of the claw of the tapping machine is at the original position 0;
the distance from the original bit 0 to the in-furnace laser detector LT/LR is: λ0, unit mm;
The distance between the leading edge of the billet and the in-furnace laser detector LT/LR is the in-furnace tracked slab position: λ1, unit mm;
The width of the blank is as follows: w, unit mm;
As a protection mechanism, prevent the range finder from detecting data having abnormality, when: the I REF-lambda I < A, A is a deviation revision set value, at the moment, the data is considered to be valid, the insertion position of the steel tapping machine claw is corrected, otherwise, the steel is automatically drawn according to the original insertion position lambda;
in this example, |REF- λ| <100mm is valid.
If the data is judged to be valid, the corrected insertion position lambda NEW of the tapping claw is calculated according to the insertion position REF of the tapping claw, and the unit mm is calculated.
The corrected insertion position lambda NEW of the tapping machine claw is calculated according to the insertion position REF of the tapping machine claw, and is as follows:
λNEW＝REF。
In this embodiment, another conservative algorithm of λ NEW is further provided, since REF is a new design of this technical improvement, in order to prevent REF from error in practical application, and reduce the influence of REF, in the initial stage of application, the following correction formula is designed:
Lambda NEW＝|REF-λ|/4+λλNEW is the corrected insertion position of the final tapping claw. This lambda NEW is the corrected insertion position of the final tapping claw in mm.
The above examples are implemented on the premise of the technical scheme of the present invention, and detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the above examples. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (5)
1. The control method for automatically optimizing the tapping position accuracy of the heating furnace is characterized by comprising the following steps of:
Step 1, arranging a plurality of high-temperature laser range finders on the transmission side of a roller way outside a heating furnace;
Step 2, performing deviation comparison on the front edge distances L1 and L2 of the slab detected by the high-temperature laser range finders and Ln, and judging the inclination state of the slab;
Step 3, when the deviation among a plurality of measured values is larger than a threshold, performing interlocking protection, not allowing automatic tapping, and performing alarm;
when the deviation among the measured values is not larger than a threshold, the following steps are carried out:
Step 301, calculating distances delta 1-delta n between the original position of the tapping machine claw and the front edge of the slab to be discharged by using the distances L1, L2 of the front edges of the slab detected by the high-temperature laser range finders, and calculating a correction value delta of the insertion position of the tapping machine claw according to the distances delta 1-delta n between the original position of the tapping machine claw and the front edge of the slab to be discharged;
step 302, calculating the position REF to be inserted of the tapping machine claw according to the corrected value delta of the insertion position of the tapping machine claw;
step 303, judging whether the original insertion position lambda calculated by the position of the slab to be inserted REF and the position of the slab tracked in the furnace deviate or not, if the deviation is smaller than a set value, the data of the position to be inserted REF is considered to be valid, correcting and calculating the position to be inserted of the claw of the tapping machine, automatically extracting steel according to the corrected insertion position, and if not, automatically extracting steel according to the original insertion position lambda without correction;
the step 2 specifically comprises the following steps:
when the tapping furnace door is at a high position, a plurality of high-temperature laser range finders detect the front edge distance of the slab simultaneously: L1L 2. Once again, in the case of a.ln, unit mm;
when the L1 and the L2 are within the set value range, the condition that the range finder detects the normal condition is met, otherwise, the range finder detects the abnormal condition, namely the edge of the slab is not detected; removing abnormal data;
Calculating the deviation value |L1-L2|=D1 between every two data in the normal data L1-L3 =d2L 2-L3|=d3. L (m-1) -lm|=dk; m is the number of effective data after abnormal data are removed, and k is the number of deviation values;
When the deviation between D1 and D2..Dk exceeds a set range, giving out slab deviation alarm to production personnel, and not allowing automatic steel drawing;
the step 301 specifically includes the following steps:
In the following formula: delta is a correction value of the insertion position of the tapping machine claw; Δ1- Δn is the distance between the original position of the tapping machine claw obtained by a plurality of high-temperature laser rangefinders and the front edge of the slab to be discharged, and the unit is mm; L1-Ln are slab front edge distance units mm detected by a plurality of high-temperature laser range finders; a plurality of high-temperature laser distance measuring instruments of alpha 1-alpha n are positioned at the original positions of the steel tapping machine claw in units of mm;
Δ1＝L1-α1
Δ2＝L2-α2
......
Δn＝Ln-αn
Δ＝(Δ1+Δ2+......+Δn)/n；
The step 303 specifically includes the following steps:
the original insertion position of the tapping machine claw calculated by the plate blank position is lambda=lambda 0-lambda 1+3/4.W;
Wherein: the front edge of the claw of the tapping machine is at the original position 0;
the distance from the original bit 0 to the in-furnace laser detector LT/LR is: λ0, unit mm;
The distance between the leading edge of the billet and the in-furnace laser detector LT/LR is the in-furnace tracked slab position: λ1, unit mm;
The width of the blank is as follows: w, unit mm;
As a protection mechanism, prevent the range finder from detecting data having abnormality, when: the I REF-lambda I < A, A is a deviation revision set value, at the moment, the data is considered to be valid, the insertion position of the steel tapping machine claw is corrected, otherwise, the steel is automatically drawn according to the original insertion position lambda;
If the data is judged to be valid, the corrected insertion position lambda NEW of the tapping claw is calculated according to the insertion position REF of the tapping claw, and the unit mm is calculated.
2. The control method for automatically optimizing tapping position accuracy of a heating furnace according to claim 1, wherein when one or more high temperature laser rangefinders at the end cannot measure a slab due to slab length, invalid data in the slab distance L1-Ln measured by the high temperature laser rangefinder is removed and then calculation of correction value delta of insertion position of a tapping claw is performed, and then:
Δ1＝L1-α1
Δ2＝L2-α2
......
Δm＝Lm-αm
Delta= (Δ1+Δ2+), where m is the effective number of distances to the slab that the high temperature laser rangefinder can measure.
3. The control method for automatically optimizing the tapping position accuracy of a heating furnace according to claim 1, wherein the step 302 specifically comprises the following steps:
the position REF of the jaw of the tapping machine, in mm, is calculated as follows:
REF＝Δ+3/4·W
w is the width of the blank, from the material tracking, in mm.
4. The control method for automatically optimizing the accuracy of a tapping position for a heating furnace according to claim 1, wherein the corrected tapping claw insertion position λ NEW is calculated from the tapping claw insertion position REF, and is:
λNEW＝REF。
5. The control method for automatically optimizing the accuracy of a tapping position for a heating furnace according to claim 1, wherein the corrected tapping claw insertion position λ NEW is calculated from the tapping claw insertion position REF, and is:
Lambda NEW＝|REF-λ|/b+λλNEW is the corrected insertion position of the final tapping claw, and b is the correction factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211595076.4A CN116144915B (en) | 2022-12-13 | 2022-12-13 | Control method for automatically optimizing tapping position accuracy of heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211595076.4A CN116144915B (en) | 2022-12-13 | 2022-12-13 | Control method for automatically optimizing tapping position accuracy of heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116144915A CN116144915A (en) | 2023-05-23 |
| CN116144915B true CN116144915B (en) | 2024-11-19 |
Family
ID=86353425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211595076.4A Active CN116144915B (en) | 2022-12-13 | 2022-12-13 | Control method for automatically optimizing tapping position accuracy of heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116144915B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134311A (en) * | 2021-11-02 | 2022-03-04 | 莱芜钢铁集团电子有限公司 | On-line accurate positioning device and method in heating furnace slab furnace |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924166B2 (en) * | 1977-10-20 | 1984-06-07 | 新日本製鐵株式会社 | Method for controlling plate temperature during continuous heating of strip |
| DD147717A1 (en) * | 1979-12-11 | 1981-04-15 | Wolfgang Bartz | DEVICE FOR POSITIONING CONTROL OF REMOVAL MACHINES AT WAERMOEFEN |
| CN101823079B (en) * | 2010-04-22 | 2011-06-29 | 攀钢集团钢铁钒钛股份有限公司 | Method for charging steel at furnace end of heating furnace |
| CN106282531B (en) * | 2015-05-27 | 2018-04-03 | 鞍钢股份有限公司 | Automatic control method for high-position steel tapping of walking beam furnace |
| KR20170008625A (en) * | 2015-07-14 | 2017-01-24 | 현대제철 주식회사 | Apparatus for waring position slab in heating furnace and control method thereof |
| KR101726061B1 (en) * | 2015-07-28 | 2017-04-12 | 주식회사 포스코 | Apparatus for measuring strip position, apparatus for controlling strip deviation and method for calculating strip deviation |
| CN111434784A (en) * | 2019-01-11 | 2020-07-21 | 宝山钢铁股份有限公司 | Deviation detection device and method for plate blank in heating furnace |
| CN113433824B (en) * | 2021-06-18 | 2022-05-10 | 阳春新钢铁有限责任公司 | Control method of heating furnace hot-delivery transverse pusher based on dynamic correction |
-
2022
- 2022-12-13 CN CN202211595076.4A patent/CN116144915B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134311A (en) * | 2021-11-02 | 2022-03-04 | 莱芜钢铁集团电子有限公司 | On-line accurate positioning device and method in heating furnace slab furnace |
Non-Patent Citations (1)
| Title |
|---|
| 步进梁式加热炉板坯跟踪定位系统;刘珍;;自动化应用;20130325(03);第66-68页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116144915A (en) | 2023-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI602624B (en) | Method for manufacturing hot-rolled steel sheet, apparatus for setting position of steel plate, setting method of steel plate cutting position, and method for manufacturing steel plate | |
| JP3495909B2 (en) | Roll roll profile control device | |
| CN1820863A (en) | A method for automatic thickness control of fast and high-precision strip rolling process | |
| CN101614529A (en) | A Method for On-Line Continuous Monitoring of the Appearance Shape of Continuous Casting Thin Slabs | |
| CN116144915B (en) | Control method for automatically optimizing tapping position accuracy of heating furnace | |
| CN104174659B (en) | A kind of big pressure rolling temperature control method of wick-containing | |
| CN111795632B (en) | On-line automatic measurement method for length of stokehole plate blank | |
| JP5293405B2 (en) | Roll gap setup method in reverse rolling | |
| JP5712572B2 (en) | Defect detection method and defect detection device for continuous cast slab for thin steel sheet | |
| JP2008043967A (en) | Method for controlling shape of plate in hot rolling | |
| CN114029345B (en) | Method for controlling tail plate shape of hot-rolled rough-rolled intermediate billet | |
| CN107262531B (en) | A kind of method that roll waves inclination setting elimination Medium and Heavy Plate Rolling camber | |
| KR100388040B1 (en) | A method for manufacturing a thick steel plate | |
| KR100919031B1 (en) | Rolling mill level control method in strip casting process | |
| JPH0663039B2 (en) | Temperature control device for heating furnace | |
| KR102281202B1 (en) | Apparatus for controlling thickness of steel sheet | |
| CN114769327A (en) | Multiple-length shearing control method for hot-rolled ribbed steel bars | |
| CN110617903B (en) | Method for detecting surface temperature of slab of hot rolling heating furnace | |
| CN114367544A (en) | Hot continuous rolling steady-state deviation rectifying control model | |
| JP2709777B2 (en) | Rolling mill control method and control device | |
| KR101629754B1 (en) | Method and apparatus for zero-point adjusting of edger roll | |
| JPS62112732A (en) | Cooling method of hot rolled steel plate | |
| JP2006021218A (en) | Method for determining the amount of slab cutting | |
| CN106312032B (en) | Online ladle residual thick marker method safely | |
| KR101295592B1 (en) | Method for predicting temperature of rolling material in rolling process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |