CN116651928A - Control method for calculating fixed weight of billet based on bar non-fixed length - Google Patents
Control method for calculating fixed weight of billet based on bar non-fixed length Download PDFInfo
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- CN116651928A CN116651928A CN202310823665.1A CN202310823665A CN116651928A CN 116651928 A CN116651928 A CN 116651928A CN 202310823665 A CN202310823665 A CN 202310823665A CN 116651928 A CN116651928 A CN 116651928A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 238000009749 continuous casting Methods 0.000 claims abstract description 58
- 238000005096 rolling process Methods 0.000 claims abstract description 44
- 238000004364 calculation method Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 33
- 238000005303 weighing Methods 0.000 claims description 24
- 230000001960 triggered effect Effects 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 6
- 238000009628 steelmaking Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims 5
- 238000004513 sizing Methods 0.000 claims 2
- 239000000463 material Substances 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 238000010008 shearing Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Metal Rolling (AREA)
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Abstract
The invention relates to the technical field of continuous casting and steel rolling production shear control, and particularly discloses a control method for calculating the fixed weight of a steel billet based on non-fixed length of a bar, which comprises the following steps: 1) Tracking a steel billet in the hot charging and direct rolling process, (1) triggering a virtual position, (2) transmitting a flow number, and (3) after the steel billet enters a rolling line, conforming to a cold billet signal tracking technology; 2) A calculation method based on the non-fixed length of the bar; 3) The rolling line length doubling shear control system uploads the remaining length and billet flow number after the last length doubling is cut to a fixed length to an industrial internet platform through the PLC control system, and the industrial internet platform issues billets to adjust the length; 4) Data conversion between the continuous casting primary control system and an industrial Internet platform; 5) Adjusting and controlling the length of the continuous casting billet; the invention realizes automatic adjustment of the length of the steel billet, thereby improving the fixed weight accuracy of the steel billet, reducing or eliminating the short rolling length and improving the rolling yield.
Description
Technical Field
The invention relates to the technical field of continuous casting and steel rolling production shear control, in particular to a control method for calculating the fixed weight of a steel billet based on non-fixed length of a bar.
Background
The length of the traditional steel billet is controlled according to the weight of the steel billet after continuous casting, the steel billet is cut according to the specified length of the steel billet in sections, and the steel billet enters a rolling line for rolling after cutting. The cold billet is identified according to the image of the feeding rack of the heating furnace, and the material identification process of the cold-packed billet is realized through a billet material information input system, a steel material information tracking system in the bar continuous rolling area and a material information tracking system in the finishing cooling bed area.
In the process of motion forming of continuous casting billets, the influences of tension speed change, molten steel temperature change, cooling condition change and crystallizer abrasion change are avoided, the unit weight changes from time to time, and especially the influence of the tension speed on the density of the billets is great, so that the weight deviation fluctuation is more than 10kg under the condition of a certain length. After steel rolling and rolling, the length of the steel is greatly changed, and the tail cannot meet the fixed-length requirement, or cut off or count the non-fixed-length materials, so that great waste and economic benefit loss are caused, and the existing steel billet sectioning and cutting system with the fixed-length has the defect of great weight error.
The energy consumption of cold billet rolling is large, and with the improvement of the process technology, the hot billet conveying and the direct billet rolling processes are generated, but due to inaccurate billet flow number, the total length of the bar is large due to oxidation burning loss of a heating furnace, change of material type control of a rolling line and change of shearing standards of each flying shear, the length of a rolled piece cannot be accurately tracked, the rolling line PLC cannot accurately feed back to continuous casting, and the continuous casting cannot timely respond accurately. Because the steel rolling production is carried out by doubling the length of different lengths, the requirement on the weight of the steel billet is higher than the standard, the rolling line is easy to produce by only controlling the weight of the steel billet by continuous casting, and the profit is reduced. Therefore, there is an urgent need to design a control method for calculating the fixed weight of a steel billet based on non-fixed length of a bar so as to solve the problems of steel billet waste caused by inaccurate tracking of the current steel billet flow number and poor control precision of the length of the cut steel billet.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a control method for calculating the fixed weight of a billet based on non-fixed length of a bar.
The technical scheme adopted for solving the technical problems is as follows: a control method for calculating the fixed weight of a billet based on non-fixed length of a bar comprises the following steps:
1) Billet tracking during hot charging and direct rolling
(1) Virtual position triggering: setting virtual billet positions and triggering conditions in a heating furnace billet flow number tracking system under the hot-rolling or direct-rolling state, thereby determining equipment action signals of each virtual billet position,
(2) stream number transmission: when continuously produced billets are cut, the preset billet feeding is carried out according to the FIFO principle,
(3) after entering the rolling line, the billet is consistent with a cold billet signal tracking technology;
2) The calculation method based on the non-fixed length of the bar comprises the following steps: calculating the length of the tail section, and transmitting the residual length value of the cut-to-length tail section to a continuous casting weighing control system through an industrial internet platform, wherein the continuous casting weighing control system converts the residual length value into the length of the billet to be adjusted;
3) The rolling line length doubling shear control system uploads the remaining length and billet flow number after the last length doubling is cut to a fixed length to an industrial internet platform through the PLC control system, and the industrial internet platform issues billets to adjust the length;
4) The continuous casting primary control system and the industrial internet platform are used for data conversion, the continuous casting primary control system transmits the length of the steel billet to the industrial internet platform, the industrial internet platform converts the length of the steel billet into the weight G0 of the steel billet which needs continuous casting adjustment through an algorithm, and the industrial internet platform issues the G0 to the continuous casting weighing control system;
5) And (3) controlling the length adjustment of the continuous casting steel billet, wherein the continuous casting weighing control system acquires the weight G of the original flow number steel billet, and when the industrial internet platform issues the flow number steel billet adjustment quantity G0, the continuous casting weighing control system issues the weight G-G0 of the original flow number steel billet to a currently executed steel billet weight computing system to execute a new round of weight design basis.
Specifically, the virtual position triggering process in the step (1) is as follows: the preset positions of the steel billet on the steel-making conveying roller table are the position 1 and the position 2, namely the steel billet is cut by a fire cutting machine when in the position 0, and when the steel billet is conveyed backwards after being cut and waiting before reaching the No. 1 baffle, when the waiting steel billet is removed from the line due to long waiting time, the flow is turned up as long as the flow is not preset and the No. 1 baffle descends.
Specifically, the triggering condition in the step (1) is that the position 0 in the heating furnace billet flow number tracking system is: clamping and clamping triggering of a fire cutting machine; position 1: cutting is completed and limit triggering is carried out; position 2: laser limit triggering is performed at the lifting baffle 1; position 3: the tail of the billet leaves the baffle 1 and is triggered by delay time 3s after laser limit; position 4: when the billet exists at the position 3, the turning-up limit trigger of the turning-up machine is performed; position 5: in the rolling mode, the position 3 is triggered after the billet starts to count for 18 s; position 6: position 5 is triggered after the billet is clocked for 10 s.
Specifically, when the flow number transmission mode in the step (2) is cutting of continuously produced billets, the cutting end point of the fire cutting machine is used as a triggering stack warehouse-in signal, the billets which are cut firstly are stored in a stack, the first-in billets are used as first-out stack signals to wait for reservation through PLC programming, and reserved billet feeding is carried out according to the FIFO principle under the single-production line and double-production line billet feeding modes, so that guarantee is provided for optimal hot-feeding and direct rolling rate.
Specifically, the calculation formula based on the non-fixed length of the rod in the step 2) is as follows: l1/l2=n. Third, L3
Wherein, L1: last length of length multiple, unit: mm;
l2: the set finished product is of a specified length in units: mm;
n: the last multiple length can cut the fixed length section number, unit: a segment;
l3: the length of the last length after the length is fixed, the unit is: mm;
the calculation formula of the length of the billet to be adjusted in continuous casting is as follows:
L4＝L3*πr2/l 2
wherein, L4: length of billet to be adjusted for continuous casting, unit: mm;
l3: the length of the last length after the length is fixed, the unit is: mm;
r: radius of finished product rolled piece, unit: mm;
l: square billet side length, unit: mm.
Specifically, the industrial internet platform in the step 3) adjusts the length of the steel billet to the continuous casting weighing control system, the continuous casting weighing control system compares the steel billet adjusting length with historical data, calculates a next steel billet parameter control model to the continuous casting primary control system, and automatically adjusts the steel billet length.
Specifically, the calculation formula of the billet weight G0 to be adjusted by continuous casting in the step 4) is g0=l4×l 2 * Billet density ρ.
Specifically, the length adjustment control process of the continuous casting billet in the step 5) comprises the following steps: the continuous casting billet weight intelligent control cutting integral system comprises a withdrawal and straightening machine speed detection system, a flame cutting system, a billet weight weighing system and a billet weight calculating system, wherein the withdrawal and straightening machine speed detection system is in communication connection with the billet weight calculating system, the instant rotating speed V of the withdrawal and straightening machine is sent to the billet weight calculating system, the billet weight G=the billet running average speed V is equal to the internal area (length×width) of a crystallizer, the time is equal to the billet density rho, when the required weight is reached, the flame cutting system is triggered to carry out follow cutting on the billet, the billet weight weighing system weighs the cut billet, and a feedback result is sent to the billet weight calculating system.
The invention has the following beneficial effects:
the control method for calculating the billet fixed weight based on the bar non-fixed length adopts a multi-point positioning signal flow billet tracking and weighing-converting into a shearing length multiple-length shearing integral system to realize automatic adjustment of the billet length, thereby improving the billet fixed weight accuracy, reducing or eliminating the rolling short length and improving the rolling yield.
Drawings
Fig. 1 is a flow chart of billet tracking.
Fig. 2 is a schematic diagram of the structure of the billet stream number transmission system.
Fig. 3 is a block diagram of the system for intelligently controlling the weight of a continuous casting billet.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described in further detail below with reference to the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A control method for calculating the fixed weight of a billet based on non-fixed length of a bar takes a square billet with the side length of 165mm as an embodiment, and specifically comprises the following steps:
1. billet tracking technology in hot charging and direct rolling process
1. Virtual location triggering process: setting virtual billet positions and triggering conditions in a heating furnace billet flow number tracking system, thereby determining equipment action signals of each virtual billet position, and enabling the billet to be cut by a fire cutting machine at a preset position of 1 and a preset position of 2 on a steel-making conveying roller way under the hot-rolling or direct-rolling state, namely, carrying the billet backwards after the billet is cut and waiting before the billet reaches a No. 1 baffle plate, when the waiting billet is removed from the line due to long waiting time, as long as the flow is not preset and the No. 1 baffle plate is lowered, the flow is turned off, and the condition that two adjacent billets are preset simultaneously at the same time, thereby leading to double billet parallelism on the steel rolling side can be completely avoided. The trigger conditions corresponding to the virtual billet positions are shown in the following table:
| virtual billet position | Trigger condition |
| Position 0 | Clamping trigger of fire cutting machine |
| Position 1 | Cutting end limit trigger |
| Position 2 | Laser limit trigger at lifting baffle 1 |
| Position 3 | Delay 3s trigger after leaving baffle 1 laser limit at billet tail |
| Position 4 | Turning-up limiting trigger of turning-up machine when billet exists at position 3 |
| Position 5 | In the rolling mode, the position 3 is triggered after the billet starts to count for 18 seconds |
| Position 6 | Position 5 is triggered after billet timing for 10s |
As shown in fig. 2, when the trigger position 0 is reached, the device signal is that the fire cutter is held and clamped, and then the fire cutter is cutting; when the trigger position 1 is triggered, the equipment signal is cutting end limit trigger, and then the cut roller way is conveying; when the trigger position 2 is triggered, the equipment signal is laser at the baffle 1, and then a billet waits at the baffle 1; when the trigger position 3 is triggered, the equipment signal is laser limit trigger at the lifting baffle 2, and the billet enters a large roller way; when the trigger position 4 is triggered, the equipment signal is that the steel tilting machine is turned up to limit when the steel billet exists at the position 3, and the steel tilting machine is turned up to a slide rail; when the position 5 is triggered, the equipment signal is in a hot-rolling mode; this flow is intended to be such that the baffles 2 fall and the steel rolling is being transported over the baffles 2.
2. Stream number transmission mode: when continuously produced billets are cut, the cutting end point of the fire cutting machine is used as a trigger stack warehouse-in signal, the billets which are cut firstly are stored in a stack, the first-in billets which are cut firstly are used as first-out stack signals to wait for reservation through PLC programming, and reserved billet feeding is carried out according to the FIFO (first in first out) principle under the mode of real single-production line and double-production line billet feeding, so that the guarantee is provided for optimal hot rolling rate.
The method of the billet stream number transmission mode shown in fig. 1-2 comprises the following steps:
1) After the preset billet reaches the laser limit of the tail end of the large roller way, the trigger position 3 is switched on.
2) The baffle 2 is not limited at the upper limit, namely the baffle 2 falls down, so that the blank feeding condition is met.
3) After the first two conditions are met, triggering and switching-on delay is 1s, namely, signal transmission is started after 1 s.
4) And after the first three conditions are met, the buffer blank number and the buffer stream number are transmitted to the steel rolling 1-level address.
5) When the conveyed billet is transmitted to the 1 st hot inspection of the steel rolling roller way, the steel rolling feeds back a hot inspection signal, and simultaneously resets the buffered billet number and stream number to be null and 0, so that the repeated transmission of the same information is prevented. This completes the conveyance of 1 billet, and the subsequent billets repeat the procedure.
2. Bar non-fixed length-based calculation method
The length of the tail section is calculated, the residual length value after the tail section is cut to a fixed length is transmitted to continuous casting through an industrial internet platform, and the continuous casting system converts the residual length value into the length of the billet to be adjusted, so that the billet weight-fixing accuracy is improved, the rolling short-length materials are reduced or eliminated, and the rolling yield is improved.
The calculation formula based on the non-fixed length of the bar is as follows: l1/l2=n. Third, L3
Wherein, L1: last length of length multiple, unit: mm;
l2: the set finished product is of a specified length in units: mm;
n: the last multiple length can cut the fixed length section number, unit: a segment;
l3: the length of the last length after the length is fixed, the unit is: mm;
the calculation formula of the length of the billet to be adjusted in continuous casting is as follows:
L4＝L3*πr2/165 2
wherein, L4: length of billet to be adjusted for continuous casting, unit: mm;
l3: the length of the last length after the length is fixed, the unit is: mm;
r: radius of finished product rolled piece, unit: mm;
the side length of the square billet is 165mm.
3. The rolling line length doubling shear control system uploads the remaining length and the billet flow number after the last length doubling is cut to a fixed length to an industrial internet platform through a PLC control system, the industrial internet platform adjusts the length of the billet to a continuous casting weighing control system, the continuous casting weighing control system compares the billet adjusting length with historical data, a next billet parameter control model is calculated to a continuous casting primary control system, and the billet length is automatically adjusted.
4. Data conversion between the continuous casting primary control system and the industrial internet platform, wherein the continuous casting primary control system transmits the length of the steel billet to the industrial internet platform, and the industrial internet platform converts the length of the steel billet into the weight G0 of the steel billet which needs continuous casting adjustment through an algorithm, wherein G0=L4×l 2 * The steel billet density rho, the industrial internet platform transmits G0 to the continuous casting weighing control system, and the system can control the length of the steel billet according to the adjustment G0 transmitted by the internet platform under the automatic state of the primary PLC for steelmaking.
5. Continuous casting billet length adjustment control process
The continuous casting billet weight intelligent control cutting integral system comprises a withdrawal and straightening machine speed detection system, a flame cutting system, a billet weight weighing system and a billet weight calculating system, wherein the withdrawal and straightening machine speed detection system is in communication connection with the billet weight calculating system, the instant rotating speed V of the withdrawal and straightening machine is sent to the billet weight calculating system, the billet weight G=the billet running average speed V is equal to the internal area (length×width) of a crystallizer, the time is equal to the billet density rho, when the required weight is reached, the flame cutting system is triggered to carry out follow cutting on the billet, the billet weight weighing system weighs the cut billet, and a feedback result is sent to the billet weight calculating system.
When the industrial internet platform issues the flow number billet adjustment quantity G0, the continuous casting weighing control system issues the original flow number billet weight G-G0 to a currently executed billet weight calculation system, and a new round of weight design basis is executed.
The invention reduces or eliminates the rolling short-length material, improves the rolling yield, reduces the short-length material by 0.5kg every 0.1 percent, calculates according to the unit consumption of 2600 yuan per ton of steel produced by 4800 tons per day, saves the cost of billet per year (330 days) by about 205.92 ten thousands yuan per line, and is popularized in other production lines at present.
The present invention is not limited to the above embodiments, and any person who can learn the structural changes made under the teaching of the present invention can fall within the scope of the present invention if the present invention has the same or similar technical solutions.
The technology, shape, and construction parts of the present invention, which are not described in detail, are known in the art.
Claims (8)
1. The control method for calculating the fixed weight of the billet based on the non-fixed length of the bar is characterized by comprising the following steps:
1) Billet tracking during hot charging and direct rolling
(1) Virtual position triggering: setting virtual billet positions and triggering conditions in a heating furnace billet flow number tracking system under the hot-rolling or direct-rolling state, thereby determining equipment action signals of each virtual billet position,
(2) stream number transmission: when continuously produced billets are cut, the preset billet feeding is carried out according to the FIFO principle,
(3) after entering the rolling line, the billet is consistent with a cold billet signal tracking technology;
2) The calculation method based on the non-fixed length of the bar comprises the following steps: calculating the length of the tail section, and transmitting the residual length value of the cut-to-length tail section to a continuous casting weighing control system through an industrial internet platform, wherein the continuous casting weighing control system converts the residual length value into the length of the billet to be adjusted;
3) The rolling line length doubling shear control system uploads the remaining length and billet flow number after the last length doubling is cut to a fixed length to an industrial internet platform through the PLC control system, and the industrial internet platform issues billets to adjust the length;
4) The continuous casting primary control system and the industrial internet platform are used for data conversion, the continuous casting primary control system transmits the length of the steel billet to the industrial internet platform, the industrial internet platform converts the length of the steel billet into the weight G0 of the steel billet which needs continuous casting adjustment through an algorithm, and the industrial internet platform issues the G0 to the continuous casting weighing control system;
5) And (3) controlling the length adjustment of the continuous casting steel billet, wherein the continuous casting weighing control system acquires the weight G of the original flow number steel billet, and when the industrial internet platform issues the flow number steel billet adjustment quantity G0, the continuous casting weighing control system issues the weight G-G0 of the original flow number steel billet to a currently executed steel billet weight computing system to execute a new round of weight design basis.
2. The control method for calculating the billet specific gravity based on the bar non-fixed length according to claim 1, wherein the virtual position triggering process in the step (1) is as follows: the preset positions of the steel billet on the steel-making conveying roller table are the position 1 and the position 2, namely the steel billet is cut by a fire cutting machine when in the position 0, and when the steel billet is conveyed backwards after being cut and waiting before reaching the No. 1 baffle, when the waiting steel billet is removed from the line due to long waiting time, the flow is turned up as long as the flow is not preset and the No. 1 baffle descends.
3. The control method for calculating the billet specific gravity based on the bar non-fixed length according to claim 1, wherein the triggering condition in the step (1) is a position 0 in a heating furnace billet flow number tracking system: clamping and clamping triggering of a fire cutting machine; position 1: cutting is completed and limit triggering is carried out; position 2: laser limit triggering is performed at the lifting baffle 1; position 3: the tail of the billet leaves the baffle 1 and is triggered by delay time 3s after laser limit; position 4: when the billet exists at the position 3, the turning-up limit trigger of the turning-up machine is performed; position 5: in the rolling mode, the position 3 is triggered after the billet starts to count for 18 s; position 6: position 5 is triggered after the billet is clocked for 10 s.
4. The control method for calculating the billet fixed weight based on the bar non-fixed length according to claim 1, wherein when the flow number transmission mode in the step (2) is cutting of the continuously produced billets, the cutting end point of the fire cutting machine is used as a trigger stack warehouse-in signal, the billets which are cut first are stored in the stack first, the first-in billets are used as first-out stack signals to wait for reservation through PLC programming, and the reserved billet feeding is carried out according to the FIFO principle under the single-production line and double-production line billet feeding modes, so that the guarantee is provided for the optimal hot rolling rate.
5. The control method for calculating the billet specific gravity based on the bar non-sizing according to claim 1, wherein the calculation formula based on the bar non-sizing length in the step 2) is as follows: l1/l2=n. Third, L3
Wherein, L1: last length of length multiple, unit: mm;
l2: the set finished product is of a specified length in units: mm;
n: the last multiple length can cut the fixed length section number, unit: a segment;
l3: the length of the last length after the length is fixed, the unit is: mm;
the calculation formula of the length of the billet to be adjusted in continuous casting is as follows:
L4＝L3*πr 2 /l 2
wherein, L4: length of billet to be adjusted for continuous casting, unit: mm;
l3: the length of the last length after the length is fixed, the unit is: mm;
r: radius of finished product rolled piece, unit: mm;
l: square billet side length, unit: mm.
6. The method for controlling the non-fixed length calculation of the billet fixed weight based on the bar according to claim 1, wherein the industrial internet platform in the step 3) adjusts the billet length to the continuous casting weighing control system, the continuous casting weighing control system compares the billet adjusting length with historical data, calculates a next billet parameter control model to the continuous casting primary control system, and the billet length is automatically adjusted.
7. The control method for calculating the billet specific gravity based on the bar non-fixed length according to claim 1, wherein the calculation formula of the billet weight G0 to be adjusted by continuous casting in the step 4) is g0=l4×l 2 * Billet density ρ.
8. The control method for calculating the billet specific gravity based on the bar non-fixed length according to claim 1, wherein the continuous casting billet length adjustment control process in the step 5) is as follows: the continuous casting billet weight intelligent control cutting integral system comprises a withdrawal and straightening machine speed detection system, a flame cutting system, a billet weight weighing system and a billet weight calculating system, wherein the withdrawal and straightening machine speed detection system is in communication connection with the billet weight calculating system, the instant rotating speed V of the withdrawal and straightening machine is sent to the billet weight calculating system, the billet weight G=the billet running average speed V is equal to the internal area (length×width) of a crystallizer, the time is equal to the billet density rho, when the required weight is reached, the flame cutting system is triggered to carry out follow cutting on the billet, the billet weight weighing system weighs the cut billet, and a feedback result is sent to the billet weight calculating system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310823665.1A CN116651928A (en) | 2023-07-06 | 2023-07-06 | Control method for calculating fixed weight of billet based on bar non-fixed length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310823665.1A CN116651928A (en) | 2023-07-06 | 2023-07-06 | Control method for calculating fixed weight of billet based on bar non-fixed length |
Publications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921446A (en) * | 2023-09-18 | 2023-10-24 | 陕西钢铁集团有限公司 | Method for full length and fast adjusting steel billet between steel making and rolling based on direct rolling |
| CN117244948A (en) * | 2023-11-20 | 2023-12-19 | 陕西钢铁集团有限公司 | Method for detecting continuous casting flow number of steel billet between steel-making and steel-rolling based on direct rolling |
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- 2023-07-06 CN CN202310823665.1A patent/CN116651928A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921446A (en) * | 2023-09-18 | 2023-10-24 | 陕西钢铁集团有限公司 | Method for full length and fast adjusting steel billet between steel making and rolling based on direct rolling |
| CN117244948A (en) * | 2023-11-20 | 2023-12-19 | 陕西钢铁集团有限公司 | Method for detecting continuous casting flow number of steel billet between steel-making and steel-rolling based on direct rolling |
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