CN110961589B - Automatic control method for continuous casting width adjustment full process - Google Patents
Automatic control method for continuous casting width adjustment full process Download PDFInfo
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- B22—CASTING; POWDER METALLURGY
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- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/168—Controlling or regulating processes or operations for adjusting the mould size or mould taper
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
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- B22D11/163—Controlling or regulating processes or operations for cutting cast stock
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Abstract
The invention relates to a full-flow automatic control method for width adjustment in continuous casting, which comprises the following steps: step 1) generation of a manufacturing system plan; step 2), controlling a production management system; step 3) controlling the process by the process control system; step 4), field primary width adjustment control; and 5) finishing the automatic control of the width adjusting full flow. The scheme organizes a width-adjusting production plan by organizing a model by a steel type plan unit through the full-flow automatic control of a manufacturing system, a production management system, a process control system and a field production automation system of a metallurgical enterprise, and solves the unfavorable condition that a non-contract plate blank is generated in the width-adjusting process; the preset slab number is used as the minimum organization unit for slab production, and the width-adjusting production plan is optimized by fully utilizing the preset slab rolling width range on the premise of not increasing the width-adjusting times and not influencing the production rhythm, so that the off-line quantity of the slab is reduced.
Description
Technical Field
The invention relates to a control method, in particular to a continuous casting width-adjusting full-process automatic control method, and belongs to the technical field of metallurgical industry.
Background
The width dimension of a continuous casting billet produced by continuous casting in a steel mill of a metallurgical enterprise is determined according to the width of an on-line crystallizer. The on-line width adjusting technology of the continuous casting machine is that the width dimension of the produced slab is adjusted on line by changing the width dimension of the crystallizer on line under the condition of not stopping production. In the current continuous casting production process, the width specification and the size of the slab are often required to be changed due to individualization required by customers and uncertainty of the production process. In order to avoid influencing the production yield, reduce the downtime, save resources and reduce the energy consumption and the cost per ton of steel in steel mills, the crystallizer online width adjusting technology is generally adopted, so that the crystallizer online width adjusting technology is widely applied to all steel mills.
Because the side pressure limit of the hot rolling mill equipment and the single contract ordering amount are not influenced by a large factor, the production batch of the plate blanks with the same width in the steelmaking continuous casting production process is small, and the field production needs to meet the contract production requirement by frequently carrying out online width adjustment on a crystallizer. The actual width adjustment operation of production is that continuous casting operators in a steel plant calculate and confirm by contrasting continuous casting plan information in a steel-making system, and when the width adjustment operation is needed, post operators input width adjustment parameters (width adjustment point and width adjustment range) in an operation picture and activate a width adjustment program to realize the width adjustment operation of a crystallizer. The width-adjusting control flow method is manually operated and has no consideration of system flow, so that the disadvantages that the width adjustment is not executed according to the pouring batch production principle to cause a plate blank without a planned contract and the contract is not finished are caused. But also causes the hidden quality loss problems of increased secondary cutting amount and increased waste amount due to the fact that the width allowable range of the belt in the plate blank plan is not fully utilized. Meanwhile, the width adjusting process control has more production variables to be referred to, and the manual confirmation of operators is not beneficial to the improvement of the operation efficiency and the improvement of the intelligent control level.
Through the search of the inventor, most of the current width-adjusting control patents and documents are limited to the realization process technology and equipment manufacture of width adjustment on site, and the control flow of the whole width-adjusting production is rarely related and published. The only disclosure is a continuous casting automatic on-line width-adjusting control system and process control method with patent number CN201510091877 and a continuous casting billet on-line width-pre-adjusting setting and tracking method with patent number CN 201410117678. A continuous casting automatic on-line width adjusting control system and a process control method with the patent number of CN 201510091877. The control system collects casting flow pouring plan information from the basic automation information computer and the production management computer in the pouring process, reads, judges and controls and executes related information according to rules set by the system, and outputs the related information and an alarm in the executing process to prompt the content of an operator. The method is only used for simply collecting and reminding information of a field width adjusting process, automatically controls the whole width adjusting whole flow, particularly generates a width adjusting slab plan, automatically forms a width adjusting instruction, and completely does not relate to the tracking treatment of the width adjusting slab; the method for setting and tracking the online preset width of the continuous casting billet is mainly characterized in that information such as a casting plan, a heat order and a slab order is collected from a system, information such as a casting speed, a slab cutting actual performance and a heat cutting actual performance is collected from a basic automatic system, width adjustment information and trend in the whole CAST are calculated, then the position and the information of the width adjustment billet are locked, and then a calculation basis is provided for width adjustment optimization and cutting. The technical core of the method is also the optimization of the width adjusting point and the cutting point on site, and the method does not relate to how to produce the width adjusting plan from the generation of the contract and the full-flow control of the width adjusting blank at all.
Disclosure of Invention
The invention provides a continuous casting width-adjusting full-flow automatic control method aiming at the technical problems in the prior art, the scheme organizes a width-adjusting production plan by a steel-type plan unit organization model through full-flow automatic control of a manufacturing system, a production management system, a process control system and a field production automation system of a metallurgical enterprise, and solves the unfavorable condition that a non-contract slab is generated in the width-adjusting process; the preset slab number is used as the minimum organization unit for slab production, and the width-adjusting production plan is optimized by fully utilizing the preset slab rolling width range on the premise of not increasing the width-adjusting times and not influencing the production rhythm, so that the off-line quantity of the slab is reduced.
In order to achieve the purpose, the technical scheme of the invention is as follows: a full-flow automatic control method for width adjustment in continuous casting comprises the following steps:
step 1) generation of a manufacturing system plan;
1.1 after receiving the purchase information, the manufacturing system directly generates and issues a production contract;
1.2, compiling preliminary production plan content, and issuing related information to a subordinate logistics system, wherein the subordinate logistics system is used for controlling the whole process of the plate blank and mainly controls the following elements:
1.2.1 not increasing transition width-adjusting blanks (uncontact) in planning, reducing unplanned lumber;
1.2.2, setting the planned amount of the same steel type planning unit, and classifying the plans of the same steel tapping mark and the same tundish into the same planning unit;
1.2.3, optimizing the planned length range and the width range of the contract plate blank and setting the average billet withdrawal amount, and reducing the unplanned plate blank caused by insufficient preset plate blank number;
1.2.4 optimizing the sequencing of the width of the plate blank and the width range of the plate blank in the planning unit and providing support for the steelmaking width-adjusting plan;
1.2.5, increasing the information of the rolling width and the width range of the plate blank, and issuing an L3 system.
1.3 processing the actual performance information of the plate blank uploaded by the production management system, and comparing the plate blank information with the rolling requirement;
1.4, issuing a rolling plan to a production management system to provide support for subsequent production arrangement;
step 2), controlling a production management system;
the production management system control mainly optimizes information issued by the manufacturing system, edits a steel-making production plan, issues plan information and uploads actual performance information. Aiming at continuous casting width adjustment, receiving a planned width range (upper width limit and lower width limit) of newly increased rolling of a preset slab number; calculating width adjusting marks in the compiled production plan, wherein the calculation comprises four width adjusting types of non-width adjusting, width adjusting between furnaces, width adjusting in furnaces and width adjusting in the furnace adding between furnaces; and finally, optimizing the production sequence of the preset slab numbers in the planning unit according to the width adjusting information when the production plan is issued by the process control system, and providing support for the width adjusting calculation of the process control system. The main process is as follows:
2.1 receiving the planning unit information of the manufacturing system, and then compiling a production plan;
2.2 if the width adjusting plan exists, optimizing the width sequence in the planning unit, and then issuing a steel-making production plan; if the width adjusting plan is not available, the steelmaking production plan is directly issued;
2.3 after the production plan is compiled, if a width adjusting plan and a mixed pouring plan exist, three modules are optimized according to the mixed pouring sign calculation, the width adjusting sign calculation and the preset slab number sequence for processing;
2.3.1 width modulation mark calculation module processing;
2.3.1.1 reading the width of the continuous casting plan information and the casting position sequence;
2.3.1.2 reading the slab information corresponding to the heat number;
2.3.1.3 circularly judging the width information of the plate blank in the furnace;
2.3.1.4 judging whether the widths of the upper furnace and the lower furnace are consistent, and finally judging four width adjusting types of no width adjustment, width adjustment between furnaces, width adjustment in furnaces and width adjustment between furnaces and in furnaces in the pouring sequence;
2.3.2 optimizing the preset slab number sequence;
2.3.2.1 reading the plan information corresponding to the heat and judging whether the big packet arrives;
2.3.2.2 searching the manufacture order number information of the heat and the corresponding plan unit information;
2.3.2.3 obtaining information of a previous furnace and a next furnace of a planning unit in a continuous casting plan, including the widths of the plate blanks before and after the planning unit and the widths of the plate blank heads and the tails in the plan;
2.3.2.4 if the widths of the head and the tail of the slabs in the planning unit are the same, the width sequence of the slabs in the planning unit is not changed, and the sequencing among furnaces is directly carried out; if the widths of the head and the tail of the unit plate blanks in the plan are different, comparing the widths of the plate blanks of the front furnace and the rear furnace of the plan unit, and if the front width is larger than the rear width, arranging the plate blanks in a positive sequence; if the front width is smaller than the rear width, arranging in reverse order;
2.3.2.5 comparing the head width and the tail width in the planning unit with the widths of the front and the rear furnaces again, and reproducing the sequence number of the plate blank;
2.3.2.6, processing according to the width range, and ending the preset slab number sequence optimization process;
2.4, continuing to execute plan issuing after model optimization, and then receiving a plate blank cutting production actual performance from a process control system;
2.5, after receiving the actual results of the plate blank cutting production of the process control system, carrying out primary quality judgment on the width-adjusted blank;
2.5.1 receiving the actual cutting result of the plate blank, and checking against the preset plate blank number. If the steel is needed, emptying the preset slab number; if the steel does not need to be changed, whether the preset slab number is used or not is judged.
2.5.2 reading the corresponding steel tapping mark and the steel group hardness group according to the slab steel tapping mark;
2.5.3 setting an allowable value of the width difference of the plate blank according to the destination and hardness requirements of the plate blank;
2.5.4 setting the allowable width range of the plate blank according to the rolling range and the plate blank width difference range;
2.5.5, collecting the width difference between the head and the tail of the slab, and judging whether the width difference is in the set running width range of the slab. If yes, judging to be qualified, and ending the process; if not, the post production slab finishing plan flow ends.
2.6 receiving the actual performance of the heat production of the process control system, and finishing the heat determination;
step 3) controlling the process by the process control system;
3.1 receiving slab plan information sent by a production management control system to form a continuous casting plan;
3.2 collecting a ladle casting signal, and pre-arranging according to a slab plan;
3.3 if the slab width is the same, casting in a normal crystallizer; if the difference is not the same, calculating a width adjusting plan;
3.4 receiving the width adjusting plan, setting width adjusting parameters and transmitting the width adjusting parameters to an on-site automatic control system;
3.5 collecting slab information and feeding back the slab information to a production management control system;
step 4), field primary width adjustment control;
4.1 collecting the width adjusting parameters issued by the process control system, collecting the signals of the primary equipment, and determining that the width adjusting conditions are met;
4.2 if the width modulation is satisfied, receiving a process control system instruction, and executing the pull speed control and the width modulation action; if not, the information is fed back to the process control system;
and 5) finishing the automatic control of the width adjusting full flow.
Compared with the prior art, the invention has the following advantages: the scheme realizes automatic width adjustment of the operation process through systematic module design, and organizes a width adjustment production plan through a production organization model of a same steel type plan unit; the method comprises the steps of taking a preset slab number as a full-process control model of a minimum organization unit for slab production, and optimizing a width-adjusting production plan by fully utilizing a preset slab rolling width range on the premise of not increasing width-adjusting times and not influencing production rhythm; meanwhile, relevant factors influencing the width adjustment are integrated in the model and uniformly considered, and the accurate positioning of the width adjustment control point is realized through the model; and finally, reasonably dividing the width-adjusting blank by optimizing a cutting model. And finally, the automatic judgment of the quality of the width-adjusting blank, the automatic generation of a finishing plan of the width-adjusting blank and the automatic control of the logistics of the width-adjusting blank are realized. Finally, the automatic control level of the site is improved, and the working intensity of operators is reduced. After the width-adjusting full-flow automatic control method is adopted, the hot delivery proportion of the width-adjusting blank is increased from the original 32% to 84.75% at present year by year, the cutting waste amount of the off-line plate blank is reduced from 0.75 ton/block to 0.331 ton/block, the reduction range reaches 55.87%, and the economic benefit is very obvious.
Drawings
Fig. 1 and 2 are flow charts of the present invention.
Detailed Description
For the purposes of promoting an understanding and appreciation of the invention, reference will now be made to the following detailed description of the invention taken in conjunction with the accompanying drawings.
Example 1: a full-flow automatic control method for width adjustment in continuous casting comprises the following steps:
step 1) generation of a manufacturing system plan;
1.1 after receiving the purchase information, the manufacturing system directly generates and issues a production contract;
1.2, compiling preliminary production plan content, and issuing related information to a subordinate logistics system, wherein the subordinate logistics system is used for controlling the whole process of the plate blank and mainly controls the following elements:
1.2.1 not increasing transition width-adjusting blanks (uncontact) in planning, reducing unplanned lumber;
1.2.2, setting the planned amount of the same steel type planning unit, and classifying the plans of the same steel tapping mark and the same tundish into the same planning unit;
1.2.3, optimizing the planned length range and the width range of the contract plate blank and setting the average billet withdrawal amount, and reducing the unplanned plate blank caused by insufficient preset plate blank number;
1.2.4 optimizing the sequencing of the width of the plate blank and the width range of the plate blank in the planning unit and providing support for the steelmaking width-adjusting plan;
1.2.5, increasing the information of the rolling width and the width range of the plate blank, and issuing an L3 system.
1.3 processing the actual performance information of the plate blank uploaded by the production management system, and comparing the plate blank information with the rolling requirement;
1.4, issuing a rolling plan to a production management system to provide support for subsequent production arrangement;
step 2), controlling a production management system;
the production management system control mainly optimizes information issued by the manufacturing system, edits a steel-making production plan, issues plan information and uploads actual performance information. Aiming at continuous casting width adjustment, receiving a planned width range (upper width limit and lower width limit) of newly increased rolling of a preset slab number; calculating width adjusting marks in the compiled production plan, wherein the width adjusting marks comprise four width adjusting types of no width adjustment, width adjustment between furnaces, width adjustment in furnaces and width adjustment in the process of adding the furnaces between the furnaces; and finally, optimizing the production sequence of the preset slab numbers in the planning unit according to the width adjusting information when the production plan is issued by the process control system, and providing support for the width adjusting calculation of the process control system. The main process is as follows:
2.1 receiving the planning unit information of the manufacturing system, and then compiling a production plan;
2.2 if the width adjusting plan exists, optimizing the width sequence in the planning unit, and then issuing a steel-making production plan; if the width adjusting plan is not available, the steelmaking production plan is directly issued;
2.3 after the production plan is compiled, if a width adjusting plan and a mixed pouring plan exist, three modules are optimized according to the mixed pouring sign calculation, the width adjusting sign calculation and the preset slab number sequence for processing;
2.3.1 width modulation mark calculation module processing;
2.3.1.1 reading the width of the continuous casting plan information and the casting position sequence;
2.3.1.2 reading the slab information corresponding to the heat number;
2.3.1.3 circularly judging the width information of the plate blank in the furnace;
2.3.1.4 judging whether the widths of the upper furnace and the lower furnace are consistent, and finally judging four width adjusting types of no width adjustment, width adjustment between furnaces, width adjustment in furnaces and width adjustment between furnaces and in furnaces in the pouring sequence;
2.3.2 optimizing the preset slab number sequence;
2.3.2.1 reading the plan information corresponding to the heat and judging whether the big packet arrives;
2.3.2.2 searching the manufacture order number information of the heat and the corresponding plan unit information;
2.3.2.3 obtaining information of a previous furnace and a next furnace of a planning unit in a continuous casting plan, including the widths of the plate blanks before and after the planning unit and the widths of the plate blank heads and the tails in the plan;
2.3.2.4 if the widths of the head and the tail of the slabs in the planning unit are the same, the width sequence of the slabs in the planning unit is not changed, and the sequencing among furnaces is directly carried out; if the widths of the head and the tail of the unit plate blanks in the plan are different, comparing the widths of the plate blanks of the front furnace and the rear furnace of the plan unit, and if the front width is larger than the rear width, arranging the plate blanks in a positive sequence; if the front width is smaller than the rear width, arranging in reverse order;
2.3.2.5 comparing the head width and the tail width in the planning unit with the widths of the front and the rear furnaces again, and reproducing the sequence number of the plate blank;
2.3.2.6, processing according to the width range, and ending the preset slab number sequence optimization process;
2.4, continuing to execute plan issuing after model optimization, and then receiving a plate blank cutting production actual performance from a process control system;
2.5, after receiving the actual results of the plate blank cutting production of the process control system, carrying out primary quality judgment on the width-adjusted blank;
2.5.1 receiving the actual cutting result of the plate blank, and checking against the preset plate blank number. If the steel is needed, emptying the preset slab number; if the steel does not need to be changed, whether the preset slab number is used or not is judged.
2.5.2 reading the corresponding steel tapping mark and the steel group hardness group according to the slab steel tapping mark;
2.5.3 setting an allowable value of the width difference of the plate blank according to the destination and hardness requirements of the plate blank;
2.5.4 setting the allowable width range of the plate blank according to the rolling range and the plate blank width difference range;
2.5.5, collecting the width difference between the head and the tail of the slab, and judging whether the width difference is in the set running width range of the slab. If yes, judging to be qualified, and ending the process; if not, the post production slab finishing plan flow ends.
2.6 receiving the actual performance of the heat production of the process control system, and finishing the heat determination;
step 3) controlling the process by the process control system;
3.1 receiving slab plan information sent by a production management control system to form a continuous casting plan;
3.2 collecting a ladle casting signal, and pre-arranging according to a slab plan;
3.3 if the slab width is the same, casting in a normal crystallizer; if the difference is not the same, calculating a width adjusting plan;
3.4 receiving the width adjusting plan, setting width adjusting parameters and transmitting the width adjusting parameters to an on-site automatic control system;
3.5 collecting slab information and feeding back the slab information to a production management control system;
step 4), field primary width adjustment control;
4.1 collecting the width adjusting parameters issued by the process control system, collecting the signals of the primary equipment, and determining that the width adjusting conditions are met;
4.2 if the width modulation is satisfied, receiving a process control system instruction, and executing the pull speed control and the width modulation action; if not, the information is fed back to the process control system;
and 5) finishing the automatic control of the width adjusting full flow.
Application example 1: with reference to figures 1 and 2 of the drawings,
the production process control of a metallurgical enterprise in a country is divided into a manufacturing system, a production management system (which is abbreviated as steelmaking L3 corresponding to the scheme), a process control system (which is steelmaking L2 corresponding to the scheme) and an on-site automatic control system (which is abbreviated as an L1 control system corresponding to the scheme) according to the level authority and the flow. The same steel type planning unit is called cast lot for short, the plan settings issued by the manufacturing system to the steel making L3 are 0019A1 and 0019A2, and the plan settings issued by the steel making L3 to the steel making L2 are 191J75 and 1J197. The front width of the cast lot is set as W1, the back width is set as W2, the inner head width of the cast lot is set as Wb, and the back width is set as Wt. According to the continuous casting width-adjusting full-flow automatic control method provided above, the method is characterized by comprising the following steps:
1. generation of manufacturing system plans
1.1 after receiving the purchase information, the manufacturing system directly generates and issues a production contract;
1.2, compiling preliminary production plan content, and issuing related information to a subordinate logistics system, wherein the subordinate logistics system is used for controlling the whole process of the plate blank and mainly controls the following elements:
1.2.1 not increasing transition width-adjusting blanks (uncontact) in planning, reducing unplanned lumber;
1.2.2 setting a cast lot, and classifying the same steel tapping mark and the same package plan as the same cast lot;
1.2.3, optimizing the planned length range and the width range of the contract plate blank and setting the average billet withdrawal amount, and reducing the unplanned plate blank caused by insufficient preset plate blank number;
1.2.4, optimizing the sequencing of the width of the slab and the width range of the slab in the cast lot, and providing support for a steelmaking width-adjusting plan;
1.2.5, increasing the information of the slab rolling width and the width range, and issuing a steel-making L3 system.
1.3 processing the actual performance information of the plate blank uploaded by the steelmaking L3 system, and comparing the plate blank information with the rolling requirement;
1.4 issue a rolling plan to the steelmaking L3 to provide support for subsequent production scheduling.
2. Production management system control process (Steel-making L3 system)
The steel-making L3 system is used for continuous casting width-adjusting flow control, and mainly optimizes information issued by a manufacturing system, edits a steel-making production plan, issues plan information and uploads actual performance information. Aiming at continuous casting width adjustment, receiving a planned width range (upper width limit and lower width limit) of newly increased rolling of a preset slab number; calculating the width adjusting marks of the compiled production plan, including no width adjustment, width adjustment between furnaces, width adjustment in furnaces, width adjustment between furnaces and width adjustment in furnaces; and finally, optimizing the production sequence of preset slab numbers of cast lot according to width adjusting information when a production plan is issued to the steel-making L2 according to the production plan, and providing support for width adjusting calculation of the process control system. The main process is as follows:
2.1, after receiving a cast lot of the manufacturing system, performing production planning;
2.2 if the width adjusting plan exists, optimizing the width sequence in the planning unit, and then issuing a steel-making production plan; if the width adjusting plan is not available, the steelmaking production plan is directly issued;
2.3 after the production plan is compiled, if a width adjusting plan and a mixed pouring plan exist, three modules are optimized according to the mixed pouring sign calculation, the width adjusting sign calculation and the preset slab number sequence for processing;
2.3.1 Width modulation flag calculation Module processing
2.3.1.1 reading the width of the continuous casting plan information and the casting position sequence;
2.3.1.2 reading the slab information corresponding to the heat number;
2.3.1.3 circularly judging the width information of the plate blank in the furnace;
2.3.1.4 the casting sequence finally judges four width adjusting types of no width adjustment, width adjustment between furnaces, width adjustment in furnaces and width adjustment between furnaces and in furnaces by judging whether the widths of the upper furnace and the lower furnace are consistent.
2.3.2 predetermined slab number order optimization
2.3.2.1 collecting the plan information corresponding to the heat and judging whether the big bag arrives;
2.3.2.2 finding the manufacturing order number (pono) information of the heat and the corresponding cast lot;
2.3.2.3, acquiring information of a previous furnace and a next furnace of a castle in a continuous casting plan, wherein the information comprises the widths of slabs before and after the castle and the widths of slab heads and tails in the plan;
2.3.2.4, if the widths of the head and the tail of the cast lot inner plate blanks are the same, the sequence of the widths of the cast lot inner plate blanks is not changed, and the inter-furnace sequencing is directly carried out; if the widths of the head and the tail of the cast lot slabs are different, comparing the widths of the front and rear furnace slabs of the cast lot, and if the front width is larger than the rear width, arranging the slabs in a positive sequence; if the front width is smaller than the rear width, arranging in reverse order;
2.3.2.5 comparing the width of the head and the tail in the cast lot with the width of the front and the back heat again, and reproducing the sequence number of the plate blank;
2.3.2.6, processing according to the width range, and ending the preset slab number sequence optimization process;
2.4, continuing to execute plan issuing after model optimization, and then receiving a slab cutting production actual performance from a steelmaking L2 system;
2.5, after receiving the actual cutting result of the plate blank of the steelmaking L2 system, carrying out primary quality judgment on the width-adjusted plate blank;
2.5.1 receiving the actual cutting result of the plate blank, and checking against the preset plate blank number. If steel needs to be changed, the preset slab number is emptied; if the steel does not need to be changed, whether the preset slab number is used or not is judged.
2.5.2 reading the corresponding steel tapping mark and the steel group hardness group according to the slab steel tapping mark;
2.5.3 setting an allowable value of the width difference of the plate blank according to the destination and hardness requirements of the plate blank;
2.5.4 setting the allowable width range of the plate blank according to the rolling range and the plate blank width difference range;
2.5.5, collecting the width difference between the head and the tail of the slab, and judging whether the width difference is in the set running width range of the slab. If yes, judging to be qualified, and ending the process; if not, the post production slab finishing plan flow ends.
2.6 receiving the actual performance of the heat production of the process control system, and finishing the heat determination;
3. process control system control process
3.1 receiving slab plan information sent by a production management control system to form a continuous casting plan;
3.2 collecting a ladle casting signal, and pre-arranging according to a slab plan;
3.3 if the slab width is the same, casting in a normal crystallizer; if the difference is not the same, calculating a width adjusting plan;
3.4 receiving the width adjusting plan, setting width adjusting parameters and transmitting the width adjusting parameters to an on-site automatic control system;
3.5 collecting slab information and feeding back the slab information to a production management control system;
4. on-site first-level width modulation control
4.1 collecting the width adjusting parameters issued by the process control system, collecting the signals of the primary equipment, and determining that the width adjusting conditions are met;
4.2 if the width modulation is satisfied, receiving a process control system instruction, and executing the pull speed control and the width modulation action; if not, the information is fed back to the process control system;
5. and finishing the automatic control of the width-adjusting full flow.
It should be noted that the above-mentioned embodiments do not limit the scope of the present invention, and equivalents and substitutions made on the basis of the above-mentioned embodiments are included in the scope of the present invention.
Claims (3)
1. A full-flow automatic control method for width adjustment in continuous casting is characterized by comprising the following steps:
step 1) generation of a manufacturing system plan;
step 2), controlling a production management system;
step 3) controlling the process by the process control system;
step 4), field primary width adjustment control;
step 5), the width adjusting full flow automatic control is finished;
the step 1) of generating the manufacturing system plan specifically includes:
1.1) directly generating and issuing a production contract after the manufacturing system receives the purchase information;
1.2) compiling preliminary production plan content, and issuing related information to a subordinate logistics system, wherein the subordinate logistics system mainly controls the following elements aiming at the whole process control of the plate blank:
1.2.1) transition width-adjusting blanks are not added in planning, and non-planning materials are reduced;
1.2.2) setting the planned amount of the same steel type planning unit, and classifying the plans of the same steel tapping mark and the same tundish into the same planning unit;
1.2.3) optimizing the planned length range and the width range of the contract plate blank and setting the average billet ejection amount, and reducing the unplanned plate blank caused by insufficient preset plate blank number;
1.2.4) optimizing the sequencing of the width of the plate blank and the width range of the plate blank in the planning unit, and providing support for a steelmaking width-adjusting plan;
1.2.5) increasing the rolling width and width range information of the plate blank and issuing a production management system;
1.3) processing the actual performance information of the plate blank uploaded by the production management system, and comparing the plate blank information with the rolling requirement;
1.4) issuing a rolling plan to a production management system to provide support for subsequent production arrangement;
the step 2) is controlled by a production management system, and specifically comprises the following steps:
2.1) receiving the planning unit information of the manufacturing system, and then performing production planning;
2.2) if the width-adjusting plan exists, optimizing the width sequence in the planning unit, and then issuing a steel-making production plan; if the width adjusting plan is not available, the steelmaking production plan is directly issued;
2.3) after the production plan is compiled, if a width adjusting plan and a mixed pouring plan exist, three modules are optimized according to the mixed pouring sign calculation, the width adjusting sign calculation and the preset slab number sequence for processing;
2.3.1) processing by a width modulation mark calculation module;
2.3.1.1) reading the width of the continuous casting plan information and the pouring position sequence;
2.3.1.2) reading the slab information corresponding to the heat number;
2.3.1.3) circularly judging the width information of the slabs in the furnace;
2.3.1.4) judging whether the widths of the upper furnace and the lower furnace are consistent, and finally judging four width adjusting types of no width adjustment, width adjustment between furnaces, width adjustment in furnaces and width adjustment between furnaces and in furnaces in the pouring sequence;
2.3.2) optimizing the preset slab number sequence;
2.3.2.1) reading the plan information corresponding to the heat and judging whether the big packet arrives;
2.3.2.2) searching manufacturing order number information of the heat and corresponding planning unit information;
2.3.2.3) taking information of a previous furnace and a next furnace of a planning unit in a continuous casting plan, wherein the information comprises the widths of the plate blanks before and after the planning unit and the widths of the plate blank heads and the tails in the plan;
2.3.2.4) if the widths of the head and the tail of the slabs in the planning unit are the same, directly sequencing the slabs among the furnaces without changing the width sequence of the slabs in the planning unit; if the widths of the head and the tail of the unit plate blanks in the plan are different, comparing the widths of the plate blanks of the front furnace and the rear furnace of the plan unit, and if the front width is larger than the rear width, arranging the plate blanks in a positive sequence; if the front width is smaller than the rear width, arranging in reverse order;
2.3.2.5) comparing the head width and the tail width in the planning unit with the widths of the front and the rear furnaces again, and reproducing the sequence number of the plate blank;
2.3.2.6) processing according to the width range, and ending the preset slab number sequence optimization process;
2.4) continuing to execute plan issuing after model optimization, and then receiving a plate blank cutting production actual performance from a process control system;
2.5) after receiving the actual results of the plate blank cutting production of the process control system, carrying out primary quality judgment on the width-adjusted blank;
2.5.1) receiving the actual cutting result of the plate blank, firstly checking the preset plate blank number, and if the steel is needed, emptying the preset plate blank number; if the steel does not need to be changed, judging whether the preset slab number is used or not;
2.5.2) reading the corresponding steel tapping mark and the steel group hardness group according to the slab steel tapping mark;
2.5.3) setting an allowable value of the width difference of the plate blank according to the plate blank direction and the hardness requirement;
2.5.4) setting a slab allowable width range according to the rolling range and the slab width difference range;
2.5.5) collecting the head-tail width difference of the plate blank, and judging whether the width difference is in the set plate blank running width range, if so, judging that the plate blank is qualified, and ending the process; if not, finishing the process after the slab finishing plan is produced;
and 2.6) receiving the heat production actual performance of the process control system, and finishing the heat determination.
2. The method for automatically controlling the full flow of the width modulation in the continuous casting according to claim 1, wherein the step 3) is a process control system for controlling the process, and specifically comprises the following steps,
3.1) receiving slab plan information sent by a production management control system to form a continuous casting plan;
3.2) collecting ladle casting signals, and pre-arranging according to a slab plan;
3.3) if the widths of the slabs are the same, casting by a normal crystallizer; if the difference is not the same, calculating a width adjusting plan;
3.4) receiving the width adjusting plan, setting width adjusting parameters and transmitting the width adjusting parameters to an on-site automatic control system;
and 3.5) collecting slab information and feeding the slab information back to a production management control system.
3. The method for automatically controlling the continuous casting width-adjusting full process according to claim 2, characterized in that the method comprises the following steps: step 4) field primary width adjusting control, which comprises the following steps,
4.1) collecting the width adjusting parameters issued by the process control system, collecting the signals of the primary equipment, and determining that the width adjusting conditions are met;
4.2) if the width modulation is met, receiving a process control system instruction, and executing the speed-pulling control and the width modulation action; if not, information is fed back to the process control system.
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