A method for producing square billets by direct delivery and direct rolling without heating

Abstract

The present invention discloses a method for producing square billets by direct delivery and direct rolling without heating, including compiling a plan for direct delivery and direct rolling of bars and wires through an MMS system and issuing the plan; manually confirming the casting plan and arranging steelmaking production; executing the steelmaking production plan to produce molten steel after associating the production performance information of molten iron pretreatment with the production performance of the furnace; after the molten steel reaches the casting machine, the bar and wire PES judges the information transmitted by the steelmaking PES and issues the rolling plan to the advanced second line; after the square billet is output and enters the roller table, the bar and wire second level confirms the square billet rolling plan; and the bars and wires are output. The beneficial effects of the present invention are that it can replace the original conventional production plan mode, reduce business processes, reduce the difficulty of job coordination, reduce material loss and energy loss in the production process, reduce carbon emissions, and improve economic benefits.

Description

Technical Field

[0001] The invention relates to the technical field of steel production, in particular to a method for producing square billets by direct delivery and direct rolling without heating. Background Art

[0002] The steelmaking and continuous casting process supporting the Fangchenggang Iron and Steel Base Project (Phase I) has three 10-strand small billet continuous casting machines, which provide billets for four bars and three high-speed wires respectively. After the billet is cut, it is directly sent to the raw material area of ​​the rod and wire plant through the conveyor roller. There are three paths: directly entering the heating furnace, directly rolling, and going offline to the warehouse. Because the direct delivery roller is short, it takes less than 30 seconds from the completion of cutting to the delivery of the billet to the rod and wire. According to the traditional production plan preparation mode, the billet is first put into the finishing warehouse after it is produced, and then it is transferred to the rod and wire side through the transfer plan after it is determined to be qualified. After the billet is received by the rod and wire side, it is arranged into the raw material warehouse, and then the planner selects the billet to be produced according to the production demand and hangs the corresponding production contract, prepares the production plan and sends it to the rod and wire plant, and the rod and wire plant hoists the billet for production according to the production plan. The business process of the original production plan model is relatively long, and it requires the cooperation of multiple people, multiple processes, and multiple positions to better complete the production organization of the rod and wire. After the Fang Steel Base is fully put into production, an integrated steel-rolling production organization model will be adopted, and the corresponding production planning model needs to be adjusted. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a method for producing square billets by direct delivery and direct rolling without heating, which can solve the problem that the business process of the original conventional production planning model is relatively long and requires the cooperation of multiple people, multiple processes and multiple positions to better complete the production organization of bars and wires, and solves the problems of complicated processes and high production losses.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for producing square billets by direct delivery and direct rolling without heating, which comprises preparing a plan for direct delivery and direct rolling of bars and wires through the MMS system and issuing the plan; manually confirming the casting plan and arranging steelmaking production; after the production performance information of molten iron pretreatment is associated with the production performance of the furnace, the steelmaking production plan is executed to produce molten steel; after the molten steel reaches the casting machine, the bar and wire PES judges the information transmitted by the steelmaking PES and issues the rolling plan to the advanced second line; after the square billet is produced and enters the roller table, the bar and wire second level confirms the square billet rolling plan; and the rod and wire are produced.

[0007] As a preferred solution of the square billet direct delivery and direct rolling production method without heating described in the present invention, wherein: the compiled rod and wire direct delivery and direct rolling plan includes a casting plan for the 3# square billet caster, a rolling plan for the high line 1#, a rolling plan for the high line 2#, and a rolling plan for the high line 3#; the compiled direct rolling plan is compiled by the MMS system at the same time, and it can also specify that the square billet caster partially flows off the line and partially flows for direct rolling; the issued direct rolling plan decomposes a direct rolling plan into four operation plans for specific production lines through the MMS system, and issues the casting machine casting plan to the steelmaking PES, and the wire rolling plan to the rod and wire PES, and each furnace has a manufacturing order number to associate the furnace in the casting plan with the square billet scheduled to be used in the rolling plan; the casting machine casting plan is specifically: a casting plan contains multiple planned furnaces; the wire rolling plan is specifically: each furnace and each rod and wire production line has a direct rolling plan and a direct loading rolling plan.

[0008] As a preferred solution of the method for directly delivering and rolling square billets without heating described in the present invention, wherein: each stream of each furnace in the casting machine casting plan received by the steelmaking PES has a designated destination of the square billets, specifically: the rod line production line number corresponding to the offline or direct rolling; the rod line PES receives six rolling plans, which correspond to three high-line production lines respectively, and each furnace has two rolling plans in each designated direct rolling line, specifically: a direct rolling plan and a direct loading rolling plan, both corresponding to the same manufacturing order number; the steelmaking PES generally accepts the casting plan in advance and makes advance preparations.

[0009] As a preferred solution of the method for directly delivering and rolling square billets without heating described in the present invention, after the casting plan is ready for production, the on-site site needs to manually operate "acceptance confirmation" in the steelmaking PES in time to notify the manufacturing department not to withdraw the casting; after the casting plan is "accepted and confirmed" by the on-site site, the manufacturing department is no longer allowed to make any modifications or adjustments to the casting plan.

[0010] As a preferred solution of the square billet direct rolling production method without heating described in the present invention, wherein: after the casting plan is issued, during the pretreatment of the molten iron at the desulfurization station, its production performance information exists in the steelmaking PES with the molten iron ladle number as the keyword, and after the molten iron ladle is associated with the furnace, the production performance of the molten iron pretreatment is included in the furnace as a part of the furnace production performance; after determining the furnace, the second stage of the converter binds the actual smelting number with the manufacturing command number and reports the result to the steelmaking PES, the second stage of refining, and the second stage of the casting machine; after the steelmaking PES receives the furnace binding information of the second stage of the converter, it binds the actual smelting number with the manufacturing command number and reports it back to the MMS system; after the MMS system receives the actual smelting number information bound to the manufacturing command number, it updates the actual smelting number information to the furnace information and modifies the furnace status to "prepared"; after the second stage of the refining receives the actual furnace information bound to the planned furnace, it binds the actual smelting number with the manufacturing command number.

[0011] As a preferred solution of the square billet direct rolling production method without heating described in the present invention, wherein: after the molten iron is pretreated, the molten steel arrives at the casting machine, and the second stage of the casting machine reports the information that the molten steel arrives at the casting machine to the steelmaking PES; after the steelmaking PES receives the information that the molten steel arrives at the casting machine, it sends the information that the molten steel arrives at the casting machine to the rod and wire PES; the rod and wire PES processes the information after receiving it, specifically: finds all corresponding wire rolling plans according to the manufacturing order number, and sends the rolling plans to the corresponding high-wire second stage respectively; the high-wire second stage receives two rolling plans, including: a direct rolling plan, specifically: there is only one line of data in the material details of the direct rolling plan, that is, a virtual material whose smelting number is the actual smelting number and the furnace batch number is the "direct rolling furnace batch number", and a direct loading rolling plan, specifically: there is only one line of data in the material details of the direct loading rolling plan, that is, a virtual material whose smelting number is the actual smelting number and the furnace batch number is the "direct loading furnace batch number".

[0012] As a preferred solution of the method for directly delivering and rolling square billets without heating described in the present invention, after the square billets are produced and enter the roller table, the second stage of the caster reports the square billet information to the steelmaking PES. If the actual destination type of the square billet is direct rolling, the second stage of the caster sends the square billet information to the second stage system of the bar and wire area according to the actual destination of the square billet. After receiving the square billet output information from the second stage of the caster, the steelmaking PES sends the square billet information to the bar and wire PES and the MMS system. The square billet information sent by the steelmaking PES contains the smelting number and the furnace batch number.

[0013] As a preferred solution of the billet-free direct rolling production method of the present invention, the rod and wire level 2 stores the billet information in the level 2 database after receiving the billet information, and after the physical billet arrives from the roller and is identified, the rod and wire level 2 retrieves the pre-stored billet information from the database, and uses the smelting number in the billet information to find a direct rolling plan and a direct loading rolling plan in the database, specifically: if the billet conditions allow direct rolling, the rod and wire level 2 sets the furnace batch number of the billet to the "direct rolling furnace batch number" in the direct rolling plan, and increases the planned number of billets in the corresponding direct rolling plan by one; if the billet conditions allow direct loading, the rod and wire level 2 sets the furnace batch number of the billet to the "direct loading furnace batch number" in the direct loading plan, and increases the planned number of billets in the corresponding direct loading plan by one; and if the billet can only be offline, the rod and wire level 2 first arranges the billet into the direct loading rolling plan, and then revokes the billet from the direct loading rolling plan.

[0014] As a preferred solution of the square billet direct rolling production method without heating described in the present invention, after the rods and wires are produced, the rod and wire secondary stage sends the product output information to the rod and wire PES.

[0015] As a preferred scheme of the square billet non-heating direct delivery and direct rolling production method described in the present invention, it also includes: a square billet roller direct delivery bar line, which includes, 1# square billet casting machine and two lines for ordinary bars, 2# square billet casting machine and two lines for high-speed bars, and 3# square billet casting machine and three lines for high-speed wires; the 1# square billet casting machine and the two lines for ordinary bars are directly rolled in series; the 2# square billet casting machine and the two lines for high-speed bars are directly rolled in series; the 3# square billet casting machine and the three lines for high-speed wires are directly rolled in series; the square billet non-heating direct delivery and direct rolling production plan compilation model of the 1# square billet casting machine and the two lines for ordinary bars, and the 2# square billet casting machine and the two lines for high-speed bars are similar.

[0016] The beneficial effects of the present invention are as follows: the present invention can replace the original conventional production planning model, reduce business processes, reduce the difficulty of job coordination, reduce material loss and energy loss in the production process, reduce carbon emissions, and improve economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is the production line layout diagram of the square billet direct rolling production method without heating.

[0019] Figure 2 This is the main business flow chart of the billet direct rolling production method without heating.

[0020] Figure 3 This is the business flow chart of direct rolling plan of the three-level information system for the direct rolling production method of square billet without heating.

[0021] Figure 4 This is the business flow chart of the furnace planning of the direct rolling production method for square billets without heating.

[0022] Figure 5 The flow chart for determining the steelmaking furnace schedule for the billet direct rolling production method without heating is provided.

[0023] Figure 6 Issue a business chart for the pre-rolling plan for continuous casting production of the square billet direct rolling production method without heating.

[0024] Figure 7 A business chart is issued for the billet output rolling plan of the billet direct rolling production method without heating.

[0025] Figure 8 This is a process diagram for executing the billet rolling plan for the billet heating-free direct rolling production method.

[0026] Fig. 9 A method for producing square billets by direct rolling without heating Figure 8 Supplementary process diagram. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figures 1 to 9, which is the first embodiment of the present invention, and provides a method for direct delivery and direct rolling of square billets without heating, which includes preparing a plan for direct delivery and direct rolling of bars and wires through the MMS system and issuing the plan; manually confirming the casting plan and arranging steelmaking production; after the actual production performance information of molten iron pretreatment is associated with the actual production performance of the furnace, the steelmaking production plan is executed to produce molten steel; after the molten steel reaches the casting machine, the bar and wire PES judges the information transmitted by the steelmaking PES and issues the rolling plan to the advanced second line; after the square billet is produced and enters the roller table, the bar and wire secondary level confirms the square billet rolling plan; and the bar and wire are produced.

[0032] Furthermore, the prepared plan for direct delivery and direct rolling of bars and wires includes a casting plan for 3# billet caster, a rolling plan for high line 1#, a rolling plan for high line 2#, and a rolling plan for high line 3#; the prepared direct rolling plan is prepared by the MMS system at the same time, and it can also specify that part of the billet caster is offline and part of it is directly rolled; the direct rolling plan is issued by the MMS system to decompose a direct rolling plan into four operation plans for specific production lines, and the casting machine casting plan is issued to the steelmaking PES, and the wire rolling plan is issued to the rod and wire PES. Each furnace has a manufacturing order number to associate the furnace in the casting plan with the billet scheduled to be used in the rolling plan; the casting machine casting plan is specifically: a casting plan contains multiple planned furnaces; the wire rolling plan is specifically: each furnace and each bar and wire production line has a direct rolling plan and a direct loading rolling plan.

[0033] Furthermore, each stream of each furnace in the casting machine casting plan received by the steelmaking PES has a designated destination for the square billets, specifically: the rod line production line number corresponding to the offline or direct rolling; the rod line PES receives six rolling plans, corresponding to three high-line production lines respectively, and each furnace has two rolling plans in each designated direct rolling line, specifically: a direct rolling plan and a direct loading rolling plan, both corresponding to the same manufacturing order number; the steelmaking PES generally accepts the casting plan in advance and makes advance preparations.

[0034] Furthermore, after the pouring plan is ready for production, the site needs to manually operate "acceptance confirmation" in the steelmaking PES in time to notify the manufacturing department not to withdraw the pouring; after the pouring plan is "acceptance confirmation" by the site, the manufacturing department is no longer allowed to make any modifications or adjustments to the pouring plan.

[0035] Furthermore, after the casting plan is issued, during the pretreatment of the molten iron at the desulfurization station, its production performance information exists in the steelmaking PES with the molten iron ladle number as the keyword, and after the molten iron ladle is associated with the furnace, the production performance of the molten iron pretreatment is included in the furnace as part of the furnace production performance; after determining the furnace, the second stage of the converter binds the actual smelting number with the manufacturing command number and reports the result to the steelmaking PES, the second stage of refining, and the second stage of the casting machine; after the steelmaking PES receives the furnace binding information of the second stage of the converter, it binds the actual smelting number with the manufacturing command number and reports it back to the MMS system; after the MMS system receives the actual smelting number information bound to the manufacturing command number, it updates the actual smelting number information to the furnace information and modifies the furnace status to "prepared"; after the second stage of refining receives the actual furnace information bound to the planned furnace, it binds the actual smelting number with the manufacturing command number.

[0036] Furthermore, after the molten iron is pretreated, the molten steel reaches the casting machine, and the second level of the casting machine reports the information that the molten steel has arrived at the casting machine to the steelmaking PES; after the steelmaking PES receives the information that the molten steel has arrived at the casting machine, it sends the information that the molten steel has arrived at the casting machine to the rod and wire PES; the rod and wire PES processes the information after receiving it, specifically: finds all corresponding wire rolling plans according to the manufacturing order number, and sends the rolling plans to the corresponding high-wire second levels respectively; the high-wire second level receives two rolling plans, including: a direct rolling plan, specifically: there is only one line of data in the material details of the direct rolling plan, that is, a virtual material whose smelting number is the actual smelting number and the furnace batch number is the "direct rolling furnace batch number", and a direct loading rolling plan, specifically: there is only one line of data in the material details of the direct loading rolling plan, that is, a virtual material whose smelting number is the actual smelting number and the furnace batch number is the "direct loading furnace batch number".

[0037] Furthermore, after the billet is produced and enters the roller table, the second level of the caster reports the billet information to the steelmaking PES. If the actual destination type of the billet is direct rolling, the second level of the caster sends the billet information to the second level system of the rod and wire area according to the actual destination of the billet. After receiving the billet output information from the second level of the caster, the steelmaking PES sends the billet information to the rod and wire PES and MMS system. The billet information sent by the steelmaking PES contains the smelting number and furnace batch number.

[0038] Furthermore, after receiving the billet information, the rod and wire level 2 stores the billet information in the level 2 database. After the physical billet arrives from the roller and is identified, the rod and wire level 2 retrieves the pre-stored billet information from the database, and uses the smelting number in the billet information to find a direct rolling plan and a direct loading rolling plan in the database, specifically: if the billet conditions allow direct rolling, the rod and wire level 2 sets the furnace batch number of the billet to the "direct rolling furnace batch number" in the direct rolling plan, and increases the number of planned billets for the corresponding direct rolling plan by one; if the billet conditions allow direct loading, the rod and wire level 2 sets the furnace batch number of the billet to the "direct loading furnace batch number" in the direct loading plan, and increases the number of planned billets for the corresponding direct loading plan by one; and if the billet can only be offline, the rod and wire level 2 first arranges the billet into the direct loading rolling plan, and then revokes the billet from the direct loading rolling plan.

[0039] Furthermore, after the rods and wires are produced, the rod and wire secondary stage sends product output information to the rod and wire PES.

[0040] Furthermore, it also includes a billet roller direct rod delivery line, which includes, 1# billet casting machine and two lines for ordinary rods, 2# billet casting machine and two lines for high-speed rods, and 3# billet casting machine and three lines for high-speed wires; the 1# billet casting machine and the two lines for ordinary rods are directly rolled in series; the 2# billet casting machine and the two lines for high-speed rods are directly rolled in series; the 3# billet casting machine and the three lines for high-speed wires are directly rolled in series; the production plan compilation model for direct delivery and rolling of billets without heating is similar to that of the 1# billet casting machine and the two lines for ordinary rods, and the 2# billet casting machine and the two lines for high-speed rods.

[0041] It should be noted that during the construction of the post-steel MES project, the Fanggang Base proposed a solution suitable for the production of billet roller direct delivery and bar line, which can meet the production mode under different circumstances. Through a period of production practice, it optimized and improved the corresponding production processes and system functions, and summarized a set of billet direct delivery and rolling production methods suitable for Guangxi Steel without heating.

[0042] The production capacity of the three billet casting machines planned to be built in the Fanggang base is basically consistent with the production capacity of the rod and wire plant: the production capacity of the 1# billet casting machine and the two lines of ordinary bars, the 2# billet casting machine and the two lines of high-speed bars, and the 3# billet casting machine and the three lines of high-speed wires are consistent. Energy is saved and production efficiency is improved by fixedly matching the 1# billet casting machine and the two lines of ordinary bars in series direct rolling, the 2# billet casting machine and the two lines of high-speed bars in series direct rolling, and the 3# billet casting machine and the three lines of high-speed wires in series direct rolling. Since the billet is cast and cut by the casting machine and then goes directly to the rod and wire unit for rolling after about 80 seconds on the roller, in order to ensure the smooth progress of production, the manufacturing department, steelmaking site, and rod and wire site personnel need to cooperate with each other, and at the same time, the production management system (hereinafter referred to as "MMS"), steelmaking manufacturing execution system (hereinafter referred to as "steelmaking PES"), rod and wire manufacturing execution system (hereinafter referred to as "rod and wire PES"), the secondary system of the steelmaking area (including the secondary system of the converter, the secondary system of the refining, and the secondary system of the casting machine), and the secondary system of the rod and wire area (the secondary rolling system of the seven production lines, excluding the secondary system of the heating furnace) need to work together. The specific technical scheme and technical measures are as follows (taking the billet direct delivery and direct rolling production method without heating of the 3# billet casting machine and the three high-speed lines as an example):

[0043] When preparing a wire rod direct rolling plan in the MMS system, the prepared direct rolling plan is divided into four parts: a casting plan for the 3# billet caster, a rolling plan for high-speed line 1#, a rolling plan for high-speed line 2#, and a rolling plan for high-speed line 3#; these four parts (i.e., four plans for specific production lines) are a whole and are prepared on the same page at the same time; it is possible to specify that part of the billet caster is offline and part of it is directly rolled;

[0044] When issuing a direct rolling plan in the MMS system, click once on a page, and the system background will automatically decompose a direct rolling plan into four operation plans for specific production lines, and at the same time issue the casting machine pouring plan (one pouring plan contains multiple planned furnaces) to the steelmaking PES, and the wire rolling plan (each furnace and each bar production line has one direct rolling plan and one direct loading rolling plan) to the wire PES; each furnace has a manufacturing order number to associate the furnace in the pouring plan with the billet scheduled to be used in the rolling plan;

[0045] Each stream of each furnace in the billet casting machine casting plan received by the steelmaking PES has a designated billet destination: the bar line number corresponding to the off-line or direct rolling;

[0046] The bar and wire PES receives six rolling plans, one for each of the three high-speed production lines; each furnace has two rolling plans at each designated direct rolling line: one direct rolling plan and one direct loading rolling plan, corresponding to the same manufacturing order number;

[0047] Generally, the pouring plan will be issued to the steelmaking PES in advance for preparation, but it may be withdrawn, modified, and reissued before the pouring plan is actually scheduled for production. After the pouring (plan) is ready for production, the site needs to manually operate the "acceptance confirmation" (enter the Gantt chart) in the steelmaking PES in time to notify the manufacturing department not to withdraw the pouring;

[0048] After the pouring schedule is "accepted and confirmed" on site (arranged in the Gantt chart), the manufacturing department is no longer allowed to make any changes or adjustments to the pouring schedule;

[0049] According to the supply rhythm of molten iron, the on-site personnel of steelmaking will manually release the next heat or several heats in the order of heats in the steelmaking PES to the relevant secondary (converter, refining, casting machine) before the molten iron reaches the converter (it may be on the way or already in the molten iron pretreatment); for each released planned heat information, the steelmaking PES will send it to the corresponding converter secondary, refining secondary, casting secondary;

[0050] When the molten iron is pre-treated in the desulfurization station, the ladle does not need to be associated with any heat;

[0051] Since the hot metal pretreatment is not associated with any heat (planned heat or actual heat), the production performance information of hot metal pretreatment exists in the steelmaking PES with the hot metal ladle number as the keyword. After the hot metal ladle is associated with the heat, the production performance of hot metal pretreatment is included in the heat as part of the heat production performance.

[0052] After the molten iron is determined in which converter, the converter stage generates the actual smelting number of the molten steel according to the rules. At this time, a furnace really begins its life cycle. From this point on, all production performance in this steel ladle / iron ladle is collected with this actual smelting number as the keyword.

[0053] The converter level 2 binds the actual smelting number with the manufacturing order number and reports the results to the steelmaking PES, refining level 2, and casting machine level 2;

[0054] After receiving the heat binding information of the converter level 2, the steelmaking PES binds the actual smelting number with the manufacturing order number and reports it back to the MMS;

[0055] After receiving the actual smelting number information bound to the manufacturing order number, MMS updates the actual smelting number information to the furnace information and changes the furnace status to "prepared";

[0056] After receiving the actual heat information bound to the planned heat, the second refining stage binds the actual smelting number and the manufacturing order number;

[0057] After the molten steel reaches the casting machine, the second stage of the casting machine reports the information that the molten steel has arrived at the casting machine to the steelmaking PES;

[0058] After receiving the information that the molten steel has arrived at the casting machine, the steelmaking PES sends the information that the molten steel has arrived at the casting machine to the rod and wire PES. The ladle information contains the actual smelting number and the manufacturing order number;

[0059] After the rod and line PES receives the information that the molten steel has arrived at the casting machine:

[0060] a. Find all corresponding wire rod rolling plans according to the manufacturing order number (if all three wire rod production lines are direct rolling, there are a total of 6 plans, each wire rod production line has a direct rolling plan and a direct loading rolling plan), fill in the corresponding material detail information line items in the rolling plan material details with the actual smelting number and the actual furnace batch number (the direct rolling plan generates the "direct rolling furnace batch number" according to the smelting number and the bar and wire production line number, and the direct loading rolling plan generates the "direct loading furnace batch number" according to the smelting number and the bar and wire production line number);

[0061] b. The rolling plan is sent to the corresponding high-speed line level 2 respectively. Each level 2 receives two rolling plans: one direct rolling plan and one direct loading rolling plan. Among them: the direct rolling plan material details contain only one line of data, i.e., a virtual material whose smelting number is the actual smelting number and furnace batch number is the "direct rolling furnace batch number"; the direct loading rolling plan material details contain only one line of data, i.e., a virtual material whose smelting number is the actual smelting number and furnace batch number is the "direct loading furnace batch number";

[0062] After the billet is produced and enters the roller table (i.e. the destination of the billet has been determined), the second stage of the caster reports the billet information to the steelmaking PES; if the actual destination of the billet is direct rolling, the second stage of the caster sends the billet information to the second stage of high-speed line 1#, 2# or 3# according to the actual destination of the billet;

[0063] After receiving the billet output information from the second level of the casting machine, the steelmaking PES sends the billet information to the rod and wire PES and MMS; the billet information sent by the steelmaking PES contains the smelting number and furnace batch number, where the furnace batch number is derived from the smelting number and the billet destination by the steelmaking PES according to the agreed rules: the offline furnace batch number or the "direct rolling furnace batch number". Special attention: the "direct rolling furnace batch number" is the same as the "direct rolling furnace batch number" set by the rod and wire PES for the direct rolling plan after receiving the start of casting information;

[0064] After receiving the billet information (note: the billet information contains the smelting number), the bar and wire level 2 stores the billet information in the level 2 database; after the physical billet arrives from the roller and is identified, the bar and wire level 2 retrieves the pre-stored billet information from the database, and uses the smelting number in the billet information to find a direct rolling plan and a direct loading rolling plan in the database: if the billet conditions allow direct rolling, the bar and wire level 2 sets the furnace batch number of the billet to the "direct rolling furnace batch number" in the direct rolling plan, and increases the number of planned billets in the corresponding direct rolling plan by one; if the billet conditions allow direct loading, the bar and wire level 2 sets the furnace batch number of the billet to the "direct loading furnace batch number" in the direct loading plan. , add one to the planned number of billets of the corresponding direct charging plan; if the billets can only be taken off the line, the second level of the bar and line will first arrange the billets into the direct charging rolling plan, and then revoke the billets from the direct charging rolling plan; special attention: since the furnace batch number of the billets sent from the steelmaking is equal to the "direct rolling furnace batch number" in the direct rolling plan by default, in the case of no billet removal, the "cold charging furnace batch number" used by these billets when they are subsequently arranged into the cold charging plan is the same as the "direct rolling furnace batch number", which will cause a conflict with the direct rolling plan; therefore, in the bar and line PES, it is necessary to delete the direct rolling plan and the direct charging rolling plan that are not executed to free up the furnace batch number for the subsequent cold charging rolling plan.

[0065] After the wire rod is produced, the second level of the rod and wire sends the product output information to the rod and wire PES; special attention: for the square billet for direct rolling, the second level of the rod and wire reports the production according to the direct rolling plan number and the direct rolling furnace batch number; for the square billet for direct loading, the second level of the rod and wire tracks the entry / exit of the furnace and reports the production according to the direct loading rolling plan number and the direct loading furnace batch number; for the square billet for cold loading due to abnormal physical direct loading information in the system, the second level of the rod and wire tracks the entry / exit of the furnace and reports the production according to the cold loading rolling plan number and the cold loading furnace batch number (whose value is equal to the direct rolling furnace batch number);

[0066] The production planning model for direct delivery and rolling of billets without heating for the 1# billet casting machine and the two lines for ordinary bars, and for the 2# billet casting machine and the two lines for high-speed bars is similar.

[0067] Preferably, Guangxi Iron and Steel Steelmaking-Rod and Wire Design Direct Roller Table, continuous casting billet can be directly sent to rod and wire rolling without heating after cutting. As the core department of Guangxi Iron and Steel Production Organization, the Production Control Center coordinates the steelmaking plant, rod and wire plant, technical energy and environmental center, quality management center and other units to promote direct rolling production related processes.

[0068] In 2021, the bar and wire mill will directly roll 88,860 tons of billet. It is estimated that the billet will burn 0.8%-1% after cooling and then heating to the rolling temperature, and the direct rolling secondary oxidation loss is only 0.1%-0.2%. According to the case of minimum burning loss and maximum secondary oxidation, 88,860*0.8%-88,860*0.2%=533.16 tons will be saved in 2021. The direct rolling will save 533.16 tons of billet*3,735 (yuan / ton)=1.9916 million yuan. The coal gas consumption per ton of steel in the bar and wire mill in 2021 is 37.386 (m 3 / ton), saving a total of 88860*37.386=3.322 million cubic meters of gas, based on the mixed gas price of 0.4 yuan / m 3 , equivalent to RMB 1.3288 million. The total of the two items is RMB 3.3204 million.

[0069] Through the integrated production of steel rolling, the hot delivery and hot charging rate is effectively improved. The output in 2021 is 1.97 times that of 2020, and the hot charging rate is increased from 61.51% in 2020 to 65.19% in 2021. If the output is the same (2020*1.97), 115989779m3 of mixed gas will be saved in 2021, and 55559388m3 of coke oven gas will be used more. At the price of mixed gas of 0.36 yuan / m3 and coke oven gas of 0.67 yuan / m3, the benefits (cost reduction) = 115989779*0.36-55559388*0.67 = 4531530 yuan = 4.53 million yuan.

[0070] Direct rolling production reduces carbon emissions.

[0071] During the work process, the rod and wire planner and the sales department determine the rod and wire production line and product specifications, notify the rod and wire factory to prepare for the production line, and inform the steelmaking planner after confirming that the production conditions are met.

[0072] The steelmaking planner will communicate with the rod and wire production planner based on the current steelmaking production plan and determine the steelmaking production casting machine situation based on the rod and wire production lines that are started.

[0073] When both steelmaking and bar and wire production are confirmed, the steelmaking-bar and wire direct delivery and rolling plan is compiled according to the billet heating-free production plan model and issued through the MMS system.

[0074] After the plan is issued, the steel mill and the bar and wire mill will be notified to execute the plan. The steel planners and bar and wire planners will track the execution of the plan and deal with any abnormal situations.

[0075] In summary, in this model, the casting plan of the steelmaking caster and the bar and wire rolling plan are compiled and issued simultaneously, and the smelting number is used as the "medium" to transmit the billet information, ensuring the consistency of information between the previous and next processes.

[0076] This model involves data transmission between seven systems, including three third-level systems and four second-level systems. If the traditional data interaction between the third-level and second-level systems of this process is followed, there will be a certain delay. In more than 80 seconds, the bars and wires may not receive the rolling plan before production begins, which will cause major problems. Therefore, this model breaks the convention and uses the steelmaking caster second-level system to directly transmit the bar and wire second-level data, ensuring the timeliness of data transmission.

[0077] After the billet is directly sent to the bar line, there are three production modes: direct rolling, heating furnace production, and offline storage. The production plan must meet all situations. This model innovatively proposes a plan for the coexistence of two production modes, and adjusts according to actual conditions. When the direct rolling production process is not met, it can be directly loaded into the furnace for production, and when the production conditions are not met, it can be directly offline.

[0078] This model innovatively adopts a branch-by-branch tracking method, so that each stream and each branch of the billet casting machine can be identified, tracked and transmitted information. When production abnormalities occur, information can be traced and production conditions can be adjusted in a timely manner.

[0079] Since there are variables in the rhythm and capacity of a casting machine casting billets and the rhythm and capacity of multiple downstream bar and wire rolling mills rolling billets in actual production, this model innovatively adopts a fully redundant approach. Each downstream rolling mill flexibly consumes zero to all upstream billets according to the production site conditions, so as to maximize the direct rolling and direct loading rate.

[0080] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0081] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0082] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0083] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for producing square billets by direct delivery and rolling without heating, characterized in that: include, The direct delivery and rolling plan for bars and wires is compiled and issued through the MMS system; the casting plan is manually confirmed and steelmaking production is arranged; the actual production performance information of molten iron pretreatment is associated with the actual production performance of the furnace, and the steelmaking production plan is executed to produce molten steel; after the molten steel reaches the casting machine, the bar and wire PES judges the information transmitted by the steelmaking PES and issues the rolling plan to the advanced second line; after the square billet is produced and enters the roller table, the bar and wire second level confirms the square billet rolling plan; the bar and wire are produced; The prepared bar and wire direct delivery and direct rolling plan includes a casting plan for the 3# billet caster, a rolling plan for the high-speed line 1#, a rolling plan for the high-speed line 2#, and a rolling plan for the high-speed line 3#; The plan for direct delivery and direct rolling of bars and wires is compiled by the MMS system at the same time, or the billet caster is designated to partly go offline and partly go direct rolling; The plan distribution decomposes a direct rolling plan into four operation plans for specific production lines through the MMS system, distributes the casting machine pouring plan to the steelmaking PES, and the wire rolling plan to the bar and wire PES. Each furnace has a manufacturing order number to associate the furnace in the pouring plan with the billet scheduled to be used in the rolling plan. The casting machine pouring plan is specifically: a pouring plan contains multiple planned heats; The wire rod rolling plan is specifically as follows: each furnace and each bar and wire production line has a direct rolling plan and a direct loading rolling plan; Each stream of each furnace in the casting plan received by the steelmaking PES has a designated billet destination, specifically: the bar line number corresponding to the offline or direct rolling; The bar and wire PES receives six rolling plans, corresponding to three high-speed production lines, and each furnace has two rolling plans in each designated direct rolling line, specifically: a direct rolling plan and a direct loading rolling plan, both corresponding to the same manufacturing order number; The steelmaking PES receives the pouring schedule in advance and makes preparations in advance; After the pouring plan is ready for production, the site needs to manually operate "acceptance confirmation" in the steelmaking PES in time to notify the manufacturing department not to withdraw the pouring; After the pouring plan is "accepted and confirmed" on site, the manufacturing department is no longer allowed to make any modifications or adjustments to the pouring plan; After the pouring plan is issued, during the pretreatment of the molten iron at the desulfurization station, its production performance information is stored in the steelmaking PES with the molten iron ladle number as the keyword. When the molten iron ladle is associated with the furnace, the production performance of the molten iron pretreatment is included in the furnace as part of the furnace production performance. After determining the said heat, the converter level 2 binds the actual smelting number with the manufacturing order number and reports the result to the steelmaking PES, refining level 2, and casting machine level 2; After receiving the heat binding information of the second converter, the steelmaking PES binds the actual smelting number with the manufacturing order number and reports it back to the MMS system; After receiving the actual smelting number information bound to the manufacturing order number, the MMS system updates the actual smelting number information to the furnace information and modifies the furnace status to "prepared"; After receiving the binding information of the planned heat with the actual heat, the second refining stage binds the actual smelting number with the manufacturing order number.

2. The method for producing square billets by direct delivery and rolling without heating according to claim 1, characterized in that: After the molten iron is pretreated, the molten steel reaches the casting machine, and the second stage of the casting machine reports the information that the molten steel reaches the casting machine to the steelmaking PES; After receiving the information that the molten steel has arrived at the casting machine, the steelmaking PES sends the information that the molten steel has arrived at the casting machine to the rod and wire PES; The rod line PES processes the information after receiving it, specifically: Find all corresponding wire rolling plans according to the manufacturing order number, and send the rolling plans to the corresponding high-speed wire level 2; The high-speed line level 2 received two rolling plans, including: Direct rolling plan, specifically: there is only one row of data in the material details of the direct rolling plan, that is, the virtual material with the smelting number being the actual smelting number and the furnace batch number being the "direct rolling furnace batch number", and Direct loading rolling plan, specifically: there is only one row of data in the material details of the direct loading rolling plan, that is, the virtual material whose smelting number is the actual smelting number and the furnace batch number is the "direct loading furnace batch number".

3. The method for producing square billets by direct delivery and rolling without heating as claimed in claim 2, characterized in that: After the billet is produced and enters the roller table, the second stage of the casting machine reports the billet information to the steelmaking PES. If the actual destination of the billet is direct rolling, the second stage of the casting machine sends the billet information to the second stage of the bar line according to the actual destination of the billet. After receiving the billet output information from the second level of the casting machine, the steelmaking PES sends the billet information to the rod and wire PES and the MMS system. The billet information sent by the steelmaking PES carries the smelting number and the furnace batch number.

4. The method for producing square billets by direct delivery and rolling without heating as claimed in claim 3, characterized in that: After receiving the billet information, the bar and wire level 2 stores the billet information in the level 2 database. When the physical billet arrives from the roller and is identified, the bar and wire level 2 retrieves the pre-stored billet information from the database and uses the smelting number in the billet information to find a direct rolling plan and a direct loading rolling plan in the database, specifically: If the billet conditions allow direct rolling, the second level of the bar line will set the furnace batch number of the billet to the "direct rolling furnace batch number" in the direct rolling plan, and increase the number of planned billets in the corresponding direct rolling plan by one. If the billet conditions allow direct loading, the second level of the bar line sets the furnace batch number of the billet to the "direct loading furnace batch number" in the direct loading plan, increases the number of planned billets in the corresponding direct loading plan by one, and If the billet can only be rolled off the line, the second level of the bar line will first place the billet into the direct loading rolling plan and then revoke the billet from the direct loading rolling plan.

5. The method for producing square billets by direct delivery and rolling without heating as claimed in claim 4, characterized in that: After the rods and wires are produced, the rod and wire secondary system sends the product output information to the rod and wire PES.

6. The method for producing square billets by direct delivery and rolling without heating as claimed in claim 5, characterized in that: It also includes billet roller direct feeding bar lines, which include two lines for 1# billet casting machine and ordinary bars, two lines for 2# billet casting machine and high-speed bars, and three lines for 3# billet casting machine and high-speed wires; The 1# billet casting machine and two ordinary rod lines are connected in series for direct rolling; the 2# billet casting machine and two high-strength rod lines are connected in series for direct rolling; and the 3# billet casting machine and three high-strength wire lines are connected in series for direct rolling.

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