CN114192584A - Medium plate pressing regulation distribution method and system - Google Patents
Medium plate pressing regulation distribution method and system Download PDFInfo
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Abstract
The invention discloses a method and a system for distributing a pressing rule of a medium plate. According to the invention, the optimal pressing rule data corresponding to the plates with various steel types, various blank sizes, various target steel plate size ranges and various temperature control marks are stored in the pressing rule case library, the optimal pressing rule data corresponding to the current plate are searched from the pressing rule case library according to the steel type, the blank size, the target steel plate size and the temperature control marks of the current plate, the pressing rule of the current plate is distributed according to the blank size, the target steel plate size and the corresponding optimal pressing rule data of the current plate, the most suitable pressing rule can be distributed for the plates with different steel types, different blank sizes, different target steel plate sizes and different temperature control marks, and the pressing rule distribution is more reasonable.
Description
Technical Field
The invention relates to the technical field of automatic control of medium plates, in particular to a method and a system for determining the pressing distribution of a medium plate.
Background
The reduction regulation is the most basic core content in a medium plate rolling system, a medium plate production line usually adopts a single frame or double frames to execute a reversible reciprocating rolling mode, and whether the reduction regulation distribution is reasonable or not influences the overall production efficiency of the production line and can also directly influence the size, the plate shape quality, the performance and the like of a rolled steel plate. Therefore, in order to increase the yield of the heavy and medium plate mill, improve the stability of automatic production and meet the requirements of indexes after rolling in all aspects, an optimal pressing schedule needs to be given as far as possible.
The rolling process of the medium plate is generally divided into a plurality of stages, the reduction regulation distribution principle of other stages except the finish rolling stage is generally distributed according to the maximum allowable reduction, namely the pass allowable reduction combining the equipment capacity and the process requirement is considered, the steel rotating position and the temperature control position requirement in the rolling process are also considered, the finish rolling stage is generally required to be blended with the special process requirement and the rolled plate shape requirement besides the equipment capacity, and particularly the medium plate production line without the plate shape control equipment is aimed at. In the automatic rolling process, the reduction regulation calculation is automatically completed by a computer by introducing related limiting conditions and distribution rules by a control system, and can meet the requirements of common steel slabs and slabs with specifications, but the reduction regulation calculated by the method is not ideal for some specific steel slabs, slabs with the specifications and slabs with special process requirements. In addition, when slabs with the same steel type and the same specification are rolled in batches, the calculated reduction regulation data are different due to slight changes of partial parameters in the calculation process, so that the rolling stability is influenced. Therefore, there is a need to propose a more optimal pressing schedule allocation method suitable for such situations.
Disclosure of Invention
The invention provides a medium plate pressing regulation distribution method and system, and solves the technical problem that the traditional medium plate pressing regulation distribution method is unreasonable.
On one hand, the invention provides the following technical scheme:
a medium plate reduction regulation distribution method comprises the following steps:
constructing a reduction procedure case library, wherein the reduction procedure case library stores optimal reduction procedure data corresponding to plates of various steel types, various blank sizes, various target steel plate size ranges and various temperature control marks;
acquiring the steel type, the blank size, the target steel plate size and a temperature control mark of the current plate;
retrieving the optimal pressing regulation data corresponding to the current plate from the pressing regulation case library according to the steel type, the blank size, the target steel plate size and the temperature control mark of the current plate;
and allocating the reduction rule of the current plate according to the blank size of the current plate, the size of the target steel plate and the corresponding optimal reduction rule data.
Preferably, the reduction procedure case library comprises a first table, a second table and a third table, wherein the first table stores steel type indexes corresponding to a plurality of steel types, the second table stores a plurality of steel type indexes, a plurality of blank size ranges, a plurality of target steel plate size ranges and procedure numbers corresponding to a plurality of temperature control marks, and the third table stores optimal reduction procedure data corresponding to a plurality of procedure numbers;
the method for retrieving the optimal pressing regulation data corresponding to the current plate from the pressing regulation case library according to the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate comprises the following steps:
retrieving a steel grade index corresponding to the current plate from the first table according to the steel grade of the current plate;
retrieving a rule number corresponding to the current plate from a second table according to the blank size of the current plate, the size of the target steel plate, the temperature control mark and the corresponding steel type index;
and retrieving the optimal pressing regulation data corresponding to the current plate from the third table according to the regulation number corresponding to the current plate.
Preferably, the optimal rolling schedule data comprises the total number of passes, the rolling type corresponding to each pass, the suggested rolling reduction, the stage number and the pass mark;
the step of distributing the reduction rules of the current plate according to the blank size of the current plate, the size of the target steel plate and the corresponding optimal reduction rule data comprises the following steps:
setting the total pass number in the optimal reduction regulation data corresponding to the current plate as the total rolling pass number of the current plate;
determining the rolling stages of the current plate and the number of passes of each rolling stage according to the stage number and the pass mark corresponding to each pass in the optimal reduction regulation data corresponding to the current plate;
determining the target thickness of each rolling stage of the current plate according to the blank size, the target steel plate size, the steel rotating thickness and the temperature control thickness of the current plate;
calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type in the optimal reduction regulation data corresponding to the current plate and the proposed reduction;
and if the target outlet thickness of the last pass of the current plate meets the requirement of the target steel plate size, calculating other set values according to the target outlet thickness of each pass of the current plate.
Preferably, the type of the reduction includes an absolute reduction and a proportion of the division of the reduction;
calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type and the proposed reduction in the optimal reduction regulation data corresponding to the current plate, and the method comprises the following steps:
if the pressing types in the optimal pressing regulation data corresponding to the current plate are absolute pressing, converting the suggested pressing amount in the optimal pressing regulation data into the pressing distribution proportion of the current plate;
and calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size, the reduction distribution ratio and the target thickness of the current plate.
Preferably, the calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size, the reduction distribution ratio and the target thickness of the current plate includes:
calculating theoretical reduction and theoretical outlet thickness of each pass of the current plate according to the blank size, the reduction distribution proportion and the target thickness of the current plate;
sequentially judging whether the theoretical reduction of the current pass is smaller than the absolute reduction limit value and the theoretical reduction is smaller than the reduction limit value from the first pass to the last pass of the current plate;
if so, setting the theoretical reduction of the current pass as the target reduction of the current pass, and taking the difference obtained by subtracting the target reduction of the current pass from the target outlet thickness of the previous pass as the target outlet thickness of the current pass;
otherwise, setting the smaller of the product of the target outlet thickness of the previous pass and the reduction rate limiting value and the absolute reduction limiting value as the target reduction of the current pass, taking the difference of the target outlet thickness of the previous pass minus the target reduction of the current pass as the target outlet thickness of the current pass, calculating the difference of the theoretical reduction minus the target reduction of the current pass, and distributing the difference to each pass after the current pass according to the reduction distribution proportion of all the passes after the current pass to obtain the new theoretical reduction of each pass after the current pass.
On the other hand, the invention also provides the following technical scheme:
a cut and heavy plate reduction schedule distribution system comprising:
the database construction module is used for constructing a reduction procedure case library, and the reduction procedure case library stores optimal reduction procedure data corresponding to plates of various steel types, various blank sizes, various target steel plate size ranges and various temperature control marks;
the data acquisition module is used for acquiring the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate;
the data retrieval module is used for retrieving the optimal pressing regulation data corresponding to the current plate from the pressing regulation case library according to the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate;
and the pressing regulation distribution module is used for distributing the pressing regulation of the current plate according to the blank size of the current plate, the size of the target steel plate and the corresponding optimal pressing regulation data.
Preferably, the reduction procedure case library comprises a first table, a second table and a third table, wherein the first table stores steel type indexes corresponding to a plurality of steel types, the second table stores a plurality of steel type indexes, a plurality of blank size ranges, a plurality of target steel plate size ranges and procedure numbers corresponding to a plurality of temperature control marks, and the third table stores optimal reduction procedure data corresponding to a plurality of procedure numbers;
the data retrieval module is further configured to:
retrieving a steel grade index corresponding to the current plate from the first table according to the steel grade of the current plate;
retrieving a rule number corresponding to the current plate from a second table according to the blank size of the current plate, the size of the target steel plate, the temperature control mark and the corresponding steel type index;
and retrieving the optimal pressing regulation data corresponding to the current plate from the third table according to the regulation number corresponding to the current plate.
Preferably, the optimal rolling schedule data comprises the total number of passes, the rolling type corresponding to each pass, the suggested rolling reduction, the stage number and the pass mark;
the reduction schedule allocation module is further configured to:
setting the total pass number in the optimal reduction regulation data corresponding to the current plate as the total rolling pass number of the current plate;
determining the rolling stages of the current plate and the number of passes of each rolling stage according to the stage number and the pass mark corresponding to each pass in the optimal reduction regulation data corresponding to the current plate;
determining the target thickness of each rolling stage of the current plate according to the blank size, the target steel plate size, the steel rotating thickness and the temperature control thickness of the current plate;
calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type in the optimal reduction regulation data corresponding to the current plate and the proposed reduction;
and if the target outlet thickness of the last pass of the current plate meets the requirement of the target steel plate size, calculating other set values according to the target outlet thickness of each pass of the current plate.
On the other hand, the invention also provides the following technical scheme:
an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements any of the above-mentioned medium plate depression procedure distribution methods when executing the program.
On the other hand, the invention also provides the following technical scheme:
a computer readable storage medium, which when executed implements any of the above-mentioned medium plate reduction procedure distribution methods.
One or more technical schemes provided by the invention at least have the following technical effects or advantages:
the optimal pressing rule data corresponding to the current plate is retrieved from the pressing rule case base according to the steel type, the blank size, the target steel plate size and the temperature control marks of the current plate, the pressing rule of the current plate is distributed according to the blank size, the target steel plate size and the corresponding optimal pressing rule data of the current plate, the most suitable pressing rule can be distributed for the plates of different steel types, different blank sizes, different target steel plate sizes and different temperature control marks, and the pressing rule distribution is more reasonable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a flow chart of a method for distributing a reduction rule of a medium plate according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a case base of the reduction protocol in an embodiment of the present invention;
FIG. 3 is an interface diagram of the operation of the case base of the reduction rules in the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a medium plate reduction schedule distribution system according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a medium plate pressing regulation distribution method and system, and solves the technical problem that the traditional medium plate pressing regulation distribution method is unreasonable.
In order to better understand the technical scheme of the invention, the technical scheme of the invention is described in detail in the following with the accompanying drawings and specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
As shown in fig. 1, the medium plate reduction rule distribution method of the present embodiment includes:
step S1, constructing a reduction rule case library, wherein the reduction rule case library stores optimal reduction rule data corresponding to plates of various steel types, various blank sizes, various target steel plate size ranges and various temperature control marks;
step S2, acquiring the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate;
step S3, retrieving the optimal pressing regulation data corresponding to the current plate from the pressing regulation case base according to the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate;
and step S4, distributing the reduction rule of the current plate according to the blank size of the current plate, the size of the target steel plate and the corresponding optimal reduction rule data.
In step S1, as shown in fig. 2, the reduction rule case library includes a first table, a second table, and a third table, the first table stores steel type indexes corresponding to a plurality of steel types, the second table stores a plurality of steel type indexes, a plurality of blank size ranges, a plurality of target steel plate size ranges, and a plurality of rule numbers corresponding to temperature control marks, and the third table stores optimal reduction rule data corresponding to a plurality of rule numbers. The size range of the blank is limited by parameters such as the maximum value of the length of the blank, the minimum value of the length of the blank, the maximum value of the thickness of the blank, the minimum value of the thickness of the blank, the maximum value of the width of the blank, the minimum value of the width of the blank and the like; the size range of the target steel plate is limited by parameters such as the maximum value of the width of the target steel plate, the minimum value of the width of the target steel plate, the maximum value of the thickness of the target steel plate, the minimum value of the thickness of the target steel plate and the like; the temperature control marks comprise 0 and 1, wherein 0 represents no temperature control, and 1 represents temperature control; the rule number is a direct external index of each rule in the reduction rule case library, the rule number naming rule can be determined according to the actual condition of a production line, and the current rule characteristic items can be obviously represented, for example, the rule number can contain information such as steel types, specifications, groups and the like; the optimal reduction regulation data comprises the total pass number, the reduction type corresponding to each pass, the suggested reduction, the stage number and the pass mark, and the optimal reduction regulation data corresponding to the specific plate material of the specific steel type, the specific blank size, the specific target steel plate size and the specific temperature control mark is the most suitable reduction regulation data of the specific plate material obtained according to production experience.
The total number of passes represents the number of passes required by the rolling process of the current plate, and comprises loaded passes and empty passes; the pressing type represents a given mode of the pressing amount of the current pass, 1 represents absolute pressing, 2 represents pressing distribution proportion, and an operator can give the pressing type according to needs; the rolling reduction represents the pass rolling reduction and corresponds to the rolling type, if the rolling type is a relative rolling manner, the given value of the rolling reduction is a relative value, and if the rolling type is an absolute rolling manner, the given value of the rolling reduction is an absolute value; the stage number represents a rolling stage corresponding to the current pass, the rolling process of the medium plate can be divided into a forming stage (0), a broadening stage (1) and a finish rolling stage (2) according to the steel rotating times, and if a temperature control rolling mode is adopted, the finish rolling stage is divided into a temperature control front (3) stage and a temperature control rear (4) stage; the pass mark represents the corresponding mark of the current pass, 0 represents the common pass, 1 represents the pre-pass steel before the pass, 2 represents the post-pass temperature control, and 3 represents the empty pass.
In this embodiment, the operation interface of the reduction rule case library is shown in fig. 3, the data items on the operation interface correspond to the data in the first table, the second table, and the third table, the storage process is completed through the operation interface, and the storage modes are divided into three types:
newly building a procedure number; inputting a newly-built procedure number in a frame behind the procedure number in the figure 3, inputting an applicable steel grade, a specification range value, a total track number, a temperature control mark, a reduction type, a reduction amount, a stage number and a pass mark of the newly-built procedure in a lower frame, clicking the lower right side for storage, and storing the currently-input procedure number and corresponding data into a reduction procedure case library;
calling an existing procedure number; the required procedure number is selected from the procedure library pull-down menu in fig. 3, or the procedure number is manually input, the calling procedure is clicked, the data item corresponding to the currently selected procedure number can be displayed on the picture, the operator can modify the data item according to the requirement, and the data corresponding to the current procedure number in the case library can be updated by clicking for storage.
Selecting a rolled steel plate; inputting the plate blank number rolled recently on the production line below the plate blank number in fig. 3, or selecting the corresponding plate blank number from a pull-down menu, clicking a query procedure, namely displaying the related data of the selected plate blank at the corresponding position of the interface, modifying the data item according to the requirement by an operator, creating a procedure number, clicking for storage, and then storing the currently input procedure number and the corresponding data into a rolling procedure case library.
In step S2, the blank size includes a blank width, a blank thickness, and a blank length, and the target steel plate size includes a target steel plate thickness and a target steel plate width.
Step S3 includes: retrieving a steel grade index corresponding to the current plate from the first table according to the steel grade of the current plate; retrieving a rule number corresponding to the current plate from a second table according to the blank size of the current plate, the size of the target steel plate, the temperature control mark and the corresponding steel type index; and retrieving the optimal pressing regulation data corresponding to the current plate from the third table according to the regulation number corresponding to the current plate. If a plurality of case records are found, returning a newly stored case record.
Step S4 includes: setting the total pass number in the optimal reduction regulation data corresponding to the current plate as the total rolling pass number of the current plate; determining the rolling stages of the current plate and the number of passes of each rolling stage according to the stage number and the pass mark corresponding to each pass in the optimal reduction regulation data corresponding to the current plate; determining the target thickness of each rolling stage of the current plate according to the blank size, the target steel plate size, the steel rotating thickness and the temperature control thickness of the current plate; calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type in the optimal reduction regulation data corresponding to the current plate and the proposed reduction; and if the target outlet thickness of the last pass of the current plate meets the requirement of the target steel plate size, calculating other set values according to the target outlet thickness of each pass of the current plate.
In this embodiment, the steel grade of the current plate is Q345D, the blank size is 200.0 × 1368.0 × 1850.0mm, the target steel plate size is 5.9 × 2655mm, the blank thickness is 200mm, the target steel plate thickness is 5.9mm, and the relevant parameters for rolling the current plate are shown in tables 1 and 2. As can be seen from Table 2, the temperature control mark of the current plate is not temperature controlled.
| Parameter name | Numerical value |
| Maximum rolling force/kN | 5000 |
| Maximum moment/kN m | 2000 |
| Maximum power/kW | 7000 |
| Diameter/mm of support roller | 2000 |
| Diameter/mm of work roll | 1000 |
TABLE 1
TABLE 2
Through the step S3, the corresponding optimal rolling procedure is searched from the rolling procedure case base according to the information of the steel grade, the blank size, the target steel plate size, the temperature control mark and the like of the current plate, the case base returns a case with the procedure number of Q345D-5.9x2655-A, and the corresponding optimal rolling procedure data are shown in the table 3.
| Parameter name | Numerical value |
| Total number of |
13 |
| Type of depression | 1,1,1,1,1,1,1,1,1,1,1,1,1 |
| |
34,27,33,27,24,18,14,11,3.5,1.9,1.0,0.6,0 |
| Number of |
1,1,2,2,2,2,2,2,2,2,2,2,2 |
| |
0,0,1,0,0,0,0,0,0,0,0,0,3 |
TABLE 3
As can be seen from table 3, the total number of passes in the optimal rolling schedule data is 13, so the total number of rolling passes of the current plate is set to 13; determining the rolling stage of the current plate to be divided into two stages of broadening and finish rolling according to the stage number and the stage mark corresponding to each pass in the optimal reduction regulation data, wherein the number of the passes in the broadening stage is 2, and the number of the passes in the finish rolling stage is 11; according to the volume invariance principle and considering the expansion of the steel plate in the hot state, the target thickness of the current plate in the broadening stage is determined to be 140.44 according to the blank size, the target steel plate size, the steel rotating thickness and the temperature control thickness of the current plate, and the target thickness of the finish rolling stage is determined to be 5.95.
Since the types of reduction in the optimal reduction schedule data are absolute reductions, in order to ensure that the target outlet thickness of each stage absolutely meets the target requirement, the proposed reduction given in the case is converted into the reduction distribution ratio of the current plate, namely the reduction distribution ratio of 2 passes in the broadening stage is 34:27, the reduction distribution ratio of 11 passes in the finishing stage is 33:27:24:18:14:11:3.5:1.9:1.0:0.6:0, and the last pass is a null pass. Therefore, in the present embodiment, the type of the pressing includes an absolute pressing and a pressing distribution ratio; calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type and the proposed reduction in the optimal reduction regulation data corresponding to the current plate, and the method comprises the following steps:
if the pressing types in the optimal pressing regulation data corresponding to the current plate are absolute pressing, converting the suggested pressing amount in the optimal pressing regulation data into the pressing distribution proportion of the current plate;
and calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size, the reduction distribution ratio and the target thickness of the current plate.
Further, the step of calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size, the reduction distribution ratio and the target thickness of the current plate includes:
calculating theoretical reduction and theoretical outlet thickness of each pass of the current plate according to the blank size, the reduction distribution proportion and the target thickness of the current plate;
sequentially judging whether the theoretical reduction of the current pass is smaller than the absolute reduction limit value and the theoretical reduction is smaller than the reduction limit value from the first pass to the last pass of the current plate;
if so, setting the theoretical reduction of the current pass as the target reduction of the current pass, and taking the difference obtained by subtracting the target reduction of the current pass from the target outlet thickness of the previous pass as the target outlet thickness of the current pass;
otherwise, setting the smaller of the product of the target outlet thickness of the previous pass and the reduction rate limiting value and the absolute reduction limiting value as the target reduction of the current pass, taking the difference of the target outlet thickness of the previous pass minus the target reduction of the current pass as the target outlet thickness of the current pass, calculating the difference of the theoretical reduction minus the target reduction of the current pass, and distributing the difference to each pass after the current pass according to the reduction distribution proportion of all the passes after the current pass to obtain the new theoretical reduction of each pass after the current pass.
The blank thickness of the current plate is 200, the target thickness of the widening stage is 140.44, and the target thickness of the finish rolling stage is 5.95, so that the total recommended reduction of the widening stage is about 60, the total recommended reduction of the finish rolling stage is about 134, the ratio of the reduction distribution of 2 passes according to the widening stage is 34:27, the ratio of the reduction distribution of 11 passes of the finish rolling stage is 33:27:24:18:14:11:3.5:1.9:1.0:0.6:0, and the theoretical reduction and the theoretical outlet thickness of 13 passes are shown in table 4.
TABLE 4
As can be seen from table 2, when the absolute reduction limit (35mm) and the reduction limit (40%) are present in the current sheet rolling, if the theoretical reduction in each pass in table 4 is smaller than the absolute reduction limit and the theoretical reduction in each pass is smaller than the reduction limit, the theoretical reduction in table 4 can be directly used as the target reduction in each pass and the theoretical outlet thickness in table 4 can be used as the target outlet thickness in each pass. And the theoretical reduction rate of the current pass is the ratio of the theoretical reduction of the current pass to the target outlet thickness of the previous pass. Therefore, it is necessary to determine whether the theoretical reduction per pass in Table 4 is smaller than the absolute reduction limit value and whether the theoretical reduction is smaller than the reduction limit value.
It is apparent that the theoretical reduction of each pass in table 4 is less than the absolute reduction limit, and the target exit thickness of the previous pass of the first pass can be regarded as the billet thickness 200, so the theoretical reduction of the first pass is 33.96/200-16.98%, which is less than the reduction limit 40%, so the target reduction of the first pass is set as the theoretical reduction 33.96, and the target exit thickness is set as the theoretical exit thickness 167.31. And sequentially judging that the theoretical reduction ratios of the second to seventh passes are all smaller than the reduction ratio limit value, and the target reduction and the target outlet thickness of the seventh pass are 14.04 and 24 respectively. The theoretical reduction ratio of the eighth pass is 11.03/24 to 46%, the reduction ratio limit value is exceeded, the product of the target outlet thickness of the seventh pass and the reduction ratio limit value is 24 × 40% to 9.6, and the product is smaller than the absolute reduction ratio limit value, so the target reduction of the eighth pass is 9.6, the difference between the target outlet thickness of the seventh pass and the target reduction of the eighth pass is 24-9.6 to 14.4, the difference between the theoretical reduction of the eighth pass and the target reduction is 11.03-9.6 to 1.43, the distribution ratio of the reduction of all passes after the eighth pass is 3.5:1.9:1.0:0.6:0, and the distribution ratio of the difference 1.43 to each pass after the eighth pass is 0.71, 0.38, 0.21, 0.12, 0, and the new theoretical reduction ratios after the eighth pass are 3.03 + 0.91.51 + 0.51, 1.1.21 +0.21 +0.12, and 0.21 +0, 0, 0.6+0.12, 0, as shown in table 5.
TABLE 5
Then, it is continuously determined whether the theoretical reduction of the ninth to the last pass is smaller than the absolute reduction limit value and the theoretical reduction is smaller than the reduction limit value, as can be seen from table 5, the theoretical reduction of the ninth to the last pass is smaller than the absolute reduction limit value and the theoretical reduction is smaller than the reduction limit value, so table 5 can be the final target reduction and the target outlet thickness of each pass.
Of course, the calculated value of the rolling reduction in each pass is also checked in this embodiment in combination with the calculated temperature of the pass, the calculated speed of the pass, the upper limit value of the rolling force, the upper limit value of the moment, and the like.
And step S4, calculating other set values according to the target outlet thickness of each pass of the current plate if the target outlet thickness of the last pass is 5.95 (hot state value), the target steel plate thickness is 5.9mm (cold state value), and the target outlet thickness of the last pass meets the requirement of the target steel plate size. Of course, if the target outlet thickness of the last pass does not meet the requirement of the target steel plate size, the retrieved optimal reduction schedule data are completely abandoned, and the reduction schedule distribution is performed again according to the original data of the blank and the normal reduction schedule distribution calculation principle. The results of calculating other set points based on the target exit thickness for each pass of the current sheet material are shown in table 6.
TABLE 6
As can be seen from the above, the present embodiment constructs a reduction rule case library, where the reduction rule case library stores optimal reduction rule data corresponding to plates of multiple steel types, multiple blank sizes, multiple target steel plate size ranges, and multiple temperature control marks, obtains the steel type, the blank size, the target steel plate size, and the temperature control mark of the current plate, retrieves the optimal reduction rule data corresponding to the current plate from the reduction rule case library according to the steel type, the blank size, the target steel plate size, and the temperature control mark of the current plate, and allocates the most suitable reduction rule to the plates of different steel types, different blank sizes, different target steel plate sizes, and different temperature control marks according to the blank size, the target steel plate size, and the corresponding optimal reduction rule data of the current plate, so that the reduction rule allocation is more reasonable.
As shown in fig. 4, the present embodiment further provides a medium plate reduction schedule distribution system, including:
the database construction module is used for constructing a reduction procedure case library, and the reduction procedure case library stores optimal reduction procedure data corresponding to plates of various steel types, various blank sizes, various target steel plate size ranges and various temperature control marks;
the data acquisition module is used for acquiring the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate;
the data retrieval module is used for retrieving the optimal pressing regulation data corresponding to the current plate from the pressing regulation case library according to the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate;
and the pressing regulation distribution module is used for distributing the pressing regulation of the current plate according to the blank size of the current plate, the size of the target steel plate and the corresponding optimal pressing regulation data.
The rolling procedure case library comprises a first table, a second table and a third table, wherein the first table stores steel type indexes corresponding to multiple steel types, the second table stores multiple steel type indexes, multiple target steel plate size ranges and procedure numbers corresponding to multiple temperature control marks, and the third table stores optimal rolling procedure data corresponding to multiple procedure numbers;
a data retrieval module further configured to:
retrieving a steel grade index corresponding to the current plate from the first table according to the steel grade of the current plate;
retrieving a rule number corresponding to the current plate from a second table according to the blank size of the current plate, the size of the target steel plate, the temperature control mark and the corresponding steel type index;
and retrieving the optimal pressing regulation data corresponding to the current plate from the third table according to the regulation number corresponding to the current plate.
The optimal rolling schedule data comprises the total number of passes, the rolling type corresponding to each pass, the suggested rolling reduction, the stage number and the pass mark;
a reduction protocol assignment module further to:
setting the total pass number in the optimal reduction regulation data corresponding to the current plate as the total rolling pass number of the current plate;
determining the rolling stages of the current plate and the number of passes of each rolling stage according to the stage number and the pass mark corresponding to each pass in the optimal reduction regulation data corresponding to the current plate;
determining the target thickness of each rolling stage of the current plate according to the blank size, the target steel plate size, the steel rotating thickness and the temperature control thickness of the current plate;
calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type in the optimal reduction regulation data corresponding to the current plate and the proposed reduction;
and if the target outlet thickness of the last pass of the current plate meets the requirement of the target steel plate size, calculating other set values according to the target outlet thickness of each pass of the current plate.
The embodiment can distribute the most suitable pressing regulation for the plates with different steel types, different blank sizes, different target steel plate sizes and different temperature control marks, and the pressing regulation distribution is more reasonable.
Based on the same inventive concept as the medium plate pressing regulation distribution method described above, the present embodiment further provides an electronic device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, the processor implements the steps of any one of the medium plate pressing regulation distribution methods described above.
Where a bus architecture (represented by a bus) is used, the bus may comprise any number of interconnected buses and bridges that link together various circuits including one or more processors, represented by a processor, and memory, represented by a memory. The bus may also link various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the receiver and transmitter. The receiver and transmitter may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor is responsible for managing the bus and general processing, while the memory may be used for storing data used by the processor in performing operations.
Since the electronic device described in this embodiment is an electronic device used for implementing the distribution method for the depression regulations of the medium plate in the embodiment of the present invention, based on the distribution method for the depression regulations of the medium plate described in the embodiment of the present invention, a person skilled in the art can understand the specific implementation of the electronic device of this embodiment and various variations thereof, and therefore, how to implement the method in the embodiment of the present invention by the electronic device is not described in detail herein. The electronic equipment adopted by the persons skilled in the art to implement the medium plate pressing regulation distribution method in the embodiment of the invention is within the protection scope of the invention.
Based on the same inventive concept as the medium plate pressing regulation distribution method, the invention also provides a computer readable storage medium, and the computer readable storage medium is executed to realize any medium plate pressing regulation distribution method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A medium plate reduction regulation distribution method is characterized by comprising the following steps:
constructing a reduction procedure case library, wherein the reduction procedure case library stores optimal reduction procedure data corresponding to plates of various steel types, various blank sizes, various target steel plate size ranges and various temperature control marks;
acquiring the steel type, the blank size, the target steel plate size and a temperature control mark of the current plate;
retrieving the optimal pressing regulation data corresponding to the current plate from the pressing regulation case library according to the steel type, the blank size, the target steel plate size and the temperature control mark of the current plate;
and allocating the reduction rule of the current plate according to the blank size of the current plate, the size of the target steel plate and the corresponding optimal reduction rule data.
2. The medium plate reduction regulation distribution method according to claim 1, wherein the reduction regulation case library comprises a first table, a second table and a third table, the first table stores steel type indexes corresponding to a plurality of steel types, the second table stores a plurality of steel type indexes, a plurality of blank size ranges, a plurality of target steel plate size ranges and regulation numbers corresponding to a plurality of temperature control marks, and the third table stores optimal reduction regulation data corresponding to a plurality of regulation numbers;
the method for retrieving the optimal pressing regulation data corresponding to the current plate from the pressing regulation case library according to the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate comprises the following steps:
retrieving a steel grade index corresponding to the current plate from the first table according to the steel grade of the current plate;
retrieving a rule number corresponding to the current plate from a second table according to the blank size of the current plate, the size of the target steel plate, the temperature control mark and the corresponding steel type index;
and retrieving the optimal pressing regulation data corresponding to the current plate from the third table according to the regulation number corresponding to the current plate.
3. The method for distributing the reduction schedule for the medium plate according to claim 1, wherein the optimal reduction schedule data comprises the total number of passes, the reduction type corresponding to each pass, the proposed reduction, the stage number and the pass identifier;
the step of distributing the reduction rules of the current plate according to the blank size of the current plate, the size of the target steel plate and the corresponding optimal reduction rule data comprises the following steps:
setting the total pass number in the optimal reduction regulation data corresponding to the current plate as the total rolling pass number of the current plate;
determining the rolling stages of the current plate and the number of passes of each rolling stage according to the stage number and the pass mark corresponding to each pass in the optimal reduction regulation data corresponding to the current plate;
determining the target thickness of each rolling stage of the current plate according to the blank size, the target steel plate size, the steel rotating thickness and the temperature control thickness of the current plate;
calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type in the optimal reduction regulation data corresponding to the current plate and the proposed reduction;
and if the target outlet thickness of the last pass of the current plate meets the requirement of the target steel plate size, calculating other set values according to the target outlet thickness of each pass of the current plate.
4. The medium plate reduction procedure distribution method according to claim 3, wherein the type of the reduction comprises an absolute reduction and a reduction distribution ratio;
calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type and the proposed reduction in the optimal reduction regulation data corresponding to the current plate, and the method comprises the following steps:
if the pressing types in the optimal pressing regulation data corresponding to the current plate are absolute pressing, converting the suggested pressing amount in the optimal pressing regulation data into the pressing distribution proportion of the current plate;
and calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size, the reduction distribution ratio and the target thickness of the current plate.
5. The medium plate reduction schedule distribution method according to claim 4, wherein said calculating the target reduction and the target outlet thickness for each pass of the current plate according to the blank size, the reduction distribution ratio and the target thickness of the current plate comprises:
calculating theoretical reduction and theoretical outlet thickness of each pass of the current plate according to the blank size, the reduction distribution proportion and the target thickness of the current plate;
sequentially judging whether the theoretical reduction of the current pass is smaller than the absolute reduction limit value and the theoretical reduction is smaller than the reduction limit value from the first pass to the last pass of the current plate;
if so, setting the theoretical reduction of the current pass as the target reduction of the current pass, and taking the difference obtained by subtracting the target reduction of the current pass from the target outlet thickness of the previous pass as the target outlet thickness of the current pass;
otherwise, setting the smaller of the product of the target outlet thickness of the previous pass and the reduction rate limiting value and the absolute reduction limiting value as the target reduction of the current pass, taking the difference of the target outlet thickness of the previous pass minus the target reduction of the current pass as the target outlet thickness of the current pass, calculating the difference of the theoretical reduction minus the target reduction of the current pass, and distributing the difference to each pass after the current pass according to the reduction distribution proportion of all the passes after the current pass to obtain the new theoretical reduction of each pass after the current pass.
6. A cut and thick plate reduction schedule distribution system, comprising:
the database construction module is used for constructing a reduction procedure case library, and the reduction procedure case library stores optimal reduction procedure data corresponding to plates of various steel types, various blank sizes, various target steel plate size ranges and various temperature control marks;
the data acquisition module is used for acquiring the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate;
the data retrieval module is used for retrieving the optimal pressing regulation data corresponding to the current plate from the pressing regulation case library according to the steel grade, the blank size, the target steel plate size and the temperature control mark of the current plate;
and the pressing regulation distribution module is used for distributing the pressing regulation of the current plate according to the blank size of the current plate, the size of the target steel plate and the corresponding optimal pressing regulation data.
7. The medium plate reduction regulation distribution system according to claim 6, wherein the reduction regulation case library comprises a first table, a second table and a third table, the first table stores steel grade indexes corresponding to a plurality of steel grades, the second table stores a plurality of steel grade indexes, a plurality of blank size ranges, a plurality of target steel plate size ranges and regulation numbers corresponding to a plurality of temperature control marks, and the third table stores optimal reduction regulation data corresponding to a plurality of regulation numbers;
the data retrieval module is further configured to:
retrieving a steel grade index corresponding to the current plate from the first table according to the steel grade of the current plate;
retrieving a rule number corresponding to the current plate from a second table according to the blank size of the current plate, the size of the target steel plate, the temperature control mark and the corresponding steel type index;
and retrieving the optimal pressing regulation data corresponding to the current plate from the third table according to the regulation number corresponding to the current plate.
8. The plate reduction schedule distribution system of claim 6 wherein the optimal reduction schedule data includes a total number of passes, a type of reduction corresponding to each pass, a proposed reduction, a stage number, and a pass designation;
the reduction schedule allocation module is further configured to:
setting the total pass number in the optimal reduction regulation data corresponding to the current plate as the total rolling pass number of the current plate;
determining the rolling stages of the current plate and the number of passes of each rolling stage according to the stage number and the pass mark corresponding to each pass in the optimal reduction regulation data corresponding to the current plate;
determining the target thickness of each rolling stage of the current plate according to the blank size, the target steel plate size, the steel rotating thickness and the temperature control thickness of the current plate;
calculating the target reduction and the target outlet thickness of each pass of the current plate according to the blank size and the target thickness of the current plate, the reduction type in the optimal reduction regulation data corresponding to the current plate and the proposed reduction;
and if the target outlet thickness of the last pass of the current plate meets the requirement of the target steel plate size, calculating other set values according to the target outlet thickness of each pass of the current plate.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the medium plate depression procedure distribution method according to any one of claims 1 to 5 when executing the program.
10. A computer-readable storage medium, wherein the computer-readable storage medium, when executed, implements the medium plate reduction procedure distribution method of any one of claims 1 to 5.
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