KR102495616B1 - Apparatus for designning to produce slab of thick plate and computer-readable storage medium in which program programemd to operate apparatus for designning to produce slab of thick plate are stored - Google Patents

Abstract

The present invention maximizes the amount of order in the process of designing an intermediate product of charge and cast from a slab, which is a given order, and determines the width of the slab to minimize the number of casts, which is a unit that produces slabs at a time in the caster To provide a thick plate slab production design device and a computer readable storage medium storing a program programmed to operate the thick plate slab production design device, and a thick plate slab production design device according to an embodiment of the present invention and programmed to perform it The computer-readable storage medium in which the program is stored is a data pre-processing unit that classifies ordered slabs according to a pre-set binary relationship and combines them into a plurality of slab groups according to a pre-set cast width candidate, pre-set formulas and constraints, and , A cast frame generator for generating a cast frame in which the plurality of slab groups are arranged according to a mixed integer programming method having a predetermined objective expression and additional constraints, and the plurality of slabs by the cast frame generator It may include a slab arrangement unit for arranging slabs in slab units on a cast frame manufactured on a group basis.

Description

Heavy plate slab production design device and computer readable storage medium in which the program programmed to operate the heavy plate slab production design device is stored PRODUCE SLAB OF THICK PLATE ARE STORED}

The present invention relates to a heavy plate slab production design device for designing slab production of thick plates, which are steel products, and a computer readable storage medium storing a program programmed to operate the heavy plate slab production design device.

In general, the process of producing thick plate products in the steel industry largely consists of four steps: iron making, steel making, casting, and rolling. The iron-making process is a step in which iron ore is melted together with coke in a blast furnace to make “molten iron,” which is iron containing impurities. In the steelmaking process, molten iron from the ironmaking process is transferred to a converter and impurities are removed to make “molten steel.” In this process, the fine elements of iron are also adjusted according to the order. Casting process is an abbreviation of continuous casting process, which is a step in which refined molten steel is put into a mold inside a caster, which is a machine that performs continuous casting, and pushed to form a “slab”, an intermediate production unit. Finally, rolling is a step in which the slab is put between several rotating rolls to make it thin and make it into a blade. The final product is the thick plate that is cut from this blade into small units.

The unit of molten steel boiled in one converter used during the steelmaking process is called a charge, and the molten steel in the amount of one charge played in the subsequent process, Yeonju, is sent along two different paths from the caster, which is the name of this path. called a strand. At this time, in order to improve productivity, several charges are continuously played on the player, and this continuous performance is called a continuous performance, and an arrangement of several charges is called a cast. Charges in the cast are played in order. While one charge is being played, the other charge waits in the tundish, the middle part between the player and the charge, to control the speed of the molten steel. The tundish is replaced after one performance stage, but since production cannot be produced during the replacement and the replacement cost is high, the usability of the tundish is directly related to productivity. And, because of the lifespan of the tundish itself, the amount of charge a tundish can handle is limited. Therefore, in order to reduce replacement, it is necessary to organize as many charges as possible within a cast.

In order to make a cast, which is a performance unit with charges, two conditions must be satisfied. First, the component of iron in the steelmaking process is referred to as a steel type, and the charges must be made of the same type of steel. However, within one cast, charges having similar steel grade components may be mixed. At this time, the part where the two charges with different steel types are mixed is called Mixed Cast Slab, and the size of this mixed cast slab is small, so the relationship between the steel types that can be mixed is called the different steel type rolling relationship (hereinafter referred to as the two steel type relationship). refers to). Second, the widths of the charges and slabs in the cast must be the same. The term width refers to the width of the strand when molten steel descends from the casting machine to the strand along the mold. There is a possible width range for producing the slab according to the internal product order configuration for each slab. That is, in order to produce a slab, the width of the strand must be within the range of the production possible width of the slab. At this time, since the width of the strand cannot be changed while producing one cast, the width of the charge produced through the same strand in the cast and the slab are determined to be the same width. In addition, the width may be different for each strand, and assuming that the speed of the molten steel flowing through each strand is constant, the length can be calculated according to the strand width according to the slab configuration assigned to each strand, and the slab between both strands for each cast The length difference must be within a certain range.

Other than this, since the charge has minimum weight and maximum weight constraints, the sum of the weights of the slabs in one charge must be in between. If the sum of the weights of the slabs to be produced is less than the minimum charge weight, there is a case where a slab without an order is additionally created and produced together in the charge. A slab without this order is called a filtering slab.

To sum up, in order to make a cast, which is a unit of continuous performance with charges, slabs of the same type of steel having a width range are placed in the charge according to the weight and length conditions between strands, and a cast is made with this arranged charge, and the slab- Strand widths between charges and casts must be the same, and in the order of charges within a cast, the steel grade between adjacent charges must satisfy the condition of satisfying a heterogeneous grade relationship.

Accordingly, it is important to appropriately select the width of the slab in designing (lot grouping) materials that combine charge and cast in the slab.

Republic of Korea Patent Registration No. 10-0660226

According to one embodiment of the present invention, in the process of designing an intermediate product of charge and cast from a slab, which is a given order, the amount of order is maximized, and the number of casts, which is a unit that produces slabs at a time in a caster, is minimized. A thick plate slab production design device for determining the width of a slab and a computer readable storage medium storing a program programmed to operate the thick plate slab production design device are provided.

In order to solve the above-described problems of the present invention, a computer readable storage medium storing a program programmed to operate the thick plate slab production design device and the thick plate slab production design device according to an embodiment of the present invention is used to prepare ordered slabs in advance. Mixed integer programming method with pre-set formulas and constraints, pre-set objective formulas and additional constraints, data pre-processing unit that classifies according to the set heterogeneous relationship and combines them into a plurality of slab groups according to the pre-set cast width candidates According to the cast frame generator for generating a cast frame in which the plurality of slab groups are arranged, the cast frame generator produces slabs in units of slabs on the cast frame manufactured based on the plurality of slab groups It may include a slab arrangement to do.

According to one embodiment of the present invention, there is an effect of combining a cast and a charge with excellent productivity.

1 is a schematic configuration diagram of a heavy plate slab production design device according to an embodiment of the present invention.
2 is a view showing the operating principle of the classification unit 111 in the thick plate slab production design device according to an embodiment of the present invention.
3 is a view showing the combination of a plurality of slabs into a slab group in the thick plate slab production design device according to an embodiment of the present invention.
4 is a table showing conditions of first to third data set to indicate technical effects of a heavy plate slab production design device according to an embodiment of the present invention.
5 is a diagram illustrating an exemplary computing environment in which a heavy plate slab production design device according to an embodiment of the present invention can be implemented.

Hereinafter, preferred embodiments will be described in detail so that those skilled in the art can easily practice the present invention with reference to the accompanying drawings.

Determining the width of thick plate slabs is related to the problem of designing slabs with different width ranges and steel grades into charge and cast. First, candidates for cast width are given as input. At this time, the charge may have two strands and may have different widths for each strand. In addition, when the width of the slab is determined, the length of the slab is calculated by Equation 1.

(Formula 1)

Slab Length = Slab Weight / (Slab Width * Slab Thickness * Slab Density)

In Equation 1, the thickness of the slab and the density of the slab have the same value for all slabs, and the weight of the slab is determined according to the internal order configuration for each slab. That is, when the width of the slab is determined, the length of the slab is automatically determined.

Therefore, when the width of the slab is determined and the slabs are placed on both strands of the charge while satisfying the minimum and maximum weight ranges of the charge, the length difference between both strands is determined and the length difference cannot exceed a specific value. In addition, when forming a cast using a charge whose width is determined in this way, the steel grades of adjacent charges within the cast must satisfy the relationship of different grades, and the width of each strand of the charges must be the same. have to be satisfied

Theoretically, the width of the slab can be created in any width within the range between the minimum and maximum possible width of the slab. However, due to technical limitations or administrative limitations of the player, in practice, widths can only be made with a few candidates. Therefore, in the actual performance process, candidate widths are given, and the width of the slab is determined as one of these given widths.

Charges and casts organized in this way are evaluated according to several conditions, which are as follows.

1. As many slabs as possible to be ordered must be organized into casts. (Hereinafter, the amount of programming)

2. To increase the usability of the tundish, you should put as many charges as possible in one cast. That is, the number of organized casts should be minimized. (hereinafter the number of casts)

3. Casts composed of less than a certain number of charges are called single performance casts, and the number of these single performance casts should be minimized to improve the workability of the tundish. (The number of solo performances below)

4. In addition to custom-made slabs, it is possible to make charges including media slabs that can have any width. However, since filter media slabs are not slabs that contain actual orders, organization should be minimized. (hereinafter referred to as filter media amount) Also, the amount of filter media slabs within one charge cannot exceed a given filter media ratio.

The problem of determining the width of a thick plate slab in the above environment is defined as follows.

Input: common slab information (common slab thickness, common slab density, common slab minimum and maximum length), slab information (steel type, weight, width range), two steel type performance information, constraints (charge minimum, maximum weight constraint, charge maximum possible length difference, cast maximum possible length difference), width candidates, maximum number of occupancy within a cast, possible margin ratio

Goal: Maximize the amount of organization, minimize the number of casts, minimize the number of single performances, and minimize the amount of material

Output: a list of casts with a fixed width (charge information and slab information stored inside)

In order to solve the above problem, in the present invention, a mathematical model, Mixed Integer Programming (MIP), is used.

In other words, as one of the methods of modeling decision-making problems using equations, a mathematical model is created by replacing matters to be determined with mathematical decision variables. If the decision variable has a continuous value, such as weight or time, it is referred to as a continuous variable, and if it has discrete values, such as number or use, it is referred to as an integer variable. Mixed integer programming refers to a mathematical model in which two types of decision variables are mixed.

Mixed integer programming is largely composed of four types: parameters, decision variables, objective expressions, and constraints. Parameters are specific information given to solve mixed integer programming, and examples in this problem include the minimum weight of one charge. The decision variable is the information obtained by solving the mixed integer programming method and corresponds to the output. In the case of the objective expression, it is a goal to be achieved by using the mixed integer programming method. For example, the amount of organization and the number of casts all correspond to the objective expression. In the case of the objective expression, maximization and minimization are possible. In the case of the objective expression in the present invention, the goal to be maximized and the goal to be minimized are reflected using a linear combination. Finally, in the case of constraints, the conditions that must be satisfied for the created solution include the range of the amount of charge and the difference in length between strands.

The advantage of the above-described mathematical model is that it is easy to implement and that it is convenient to consider several objective expressions at the same time, and the disadvantage is that the problem solving speed slows down as the number of inputs increases. In order to overcome this disadvantage, the present invention decided to create a new method of solution.

As described above, a characteristic of the mixed integer programming method is that some of the decision variables are integers, and the solution speed becomes slower as the number of decision variables that are integers among the number of inputs increases. For example, in this problem, if the information placed on m strand s where slab i occupies cast n is expressed as a binary integer variable x _inms , which is an integer variable that can only have values of 0 and 1, the number of this integer variable is the number of slabs × number of charges × number of casts × 2 (number of strands). It is also known that the problem solving time increases exponentially with the total number of integer variables. In other words, it takes a lot of time to solve the problem.

In the present invention, in order to solve the problem of the above-mentioned integer variable, and also for the problem of determining the width of the charge and cast, the problem of determining the width of the charge and cast by looking at the shape of the distributed width range of the slab and the actual I split the whole problem into two parts: placing the slabs. In addition, the mixed integer programming method was used as a method of combining slabs into units called slab groups and clustering steel types that can be played by two steel types.

A heavy plate slab production design device according to an embodiment of the present invention is as follows.

1 is a schematic configuration diagram of a heavy plate slab production design device according to an embodiment of the present invention.

Referring to FIG. 1 , a thick plate slab production design device 100 according to an embodiment of the present invention may include a preprocessing unit 110, a cast frame generating unit 120, and a slab arranging unit 130.

The pre-processing unit 110 may include a classification unit 111 and a coupling unit 112. That is, the classification unit 111 classifies slabs having an actual width range in the entered slab orders using the relationship between two steel types, and the combining unit 112 may cluster slabs having the same width range and the same steel type into slab groups. there is.

2 is a view showing the operating principle of the classification unit 111 in the thick plate slab production design device according to an embodiment of the present invention.

Referring to FIG. 2 together with FIG. 1 , the classification unit 111 classifies slabs using a two-steel type relationship, targeting slabs that exceed (minimum charge weight) × (1-possible filter material ratio) on a weight basis By analyzing the relationship between slabs, it is possible to separate slabs of a steel type that cannot be put into the same cast as any other steel type. Through this process, the slabs are divided into connected components in the relationship diagram.

3 is a view showing the combination of a plurality of slabs into a slab group in the thick plate slab production design device according to an embodiment of the present invention.

Referring to FIG. 3 together with FIG. 1 , the coupling unit 112 may combine the slabs separated into connecting components into a slab group.

For example, if the width candidates for a given cast are given as 1600mm, 1900mm, and 2200mm, for one steel type, slabs available only in width 1600mm, slabs available only in width 1600mm to 1900mm, slabs available in the full width range from 1600mm to 2200mm, 1900mm It is divided into 5 different assemblies such as slabs available only in 2200mm and slabs available only in 2200mm. The sum of the weights of the slabs in each set is called the slab group. When slabs are combined into a slab group, the number of objects to be organized in the charge is reduced from the number of slabs to less than the square of the number of steel types and the number of widths, simplifying the problem.

The generated slab group can be continuously divided.

That is, not all of one slab is located in a specific cast, but only a part of the weight of the slab is located in one cast. Assuming this, integer variables turn into continuous variables, which can speed up problem solving.

Again, referring to FIG. 1 , the cast frame generation unit 120 may arrange a group of virtually divided slabs to create a cast frame, which is a frame of a charge and a cast having a determined width for arranging actual slabs later. Although the cast frame is created for continuously made slabs, not actual slabs, it is made based on the core characteristics of actual slabs, and most of the constraints that the cast must satisfy (maximum number of charges in the cast, cast strand all but the difference in length between the sections) is satisfied, and the actual slab arrangement process can be made easy in the slab arrangement unit 130 in the future.

What follows is a mathematical model of this step.

Indices set

K: set of indices of given widths

W={(k ₁ ,k ₂ )|k ₁ ∈K, k ₂ ∈K, k ₁ ≤k ₂ }: exponential set of width combinations

However, in the case of i∈W used in the slab group, it is used in the sense that the width range includes k ₁ to k ₂ , and in the case of w∈W, the widths of both strands of the charge and cast are k ₁ and k ₂ , respectively.

T: set of steel grade indices

A ={(t,t’)｜t∈T,t’∈T}: exponential set of steel grade combinations

F(t)={t'∈T}

(t, t’ is a type of steel that can be played by Lee Kang-jong)

Parameters

L _w : The maximum number of charges that can be made in width combination wfh, w∈W

Q _it : Steel type t, width combination i Total weight of slab group i∈W,t∈T

l _k : When the width is set to k, the length of the slab per 1Kg (mm) k∈K

C _mim , C _max : minimum charge weight, charge maximum weight

)M _t : The total number of charges that can be made with the steel grade t, t∈T (

)

C' _mim : Minimum net weight of charge (minimum charge weight without filter media)

E _max : Difference between charge and cast maximum length

δ _ik : slabs of width combination i can be made with width k, 1, otherwise 0 i∈W,k∈K

N: Criteria for single-play cast (single-play if the number of charges in the cast ≤ N)

Decision Variables

x _ikt : Weight i∈W,k∈K,t∈T made by the slab group of steel type t, width combination i with width k

y _kwt : The amount w∈W,k∈K,t∈T sent to the charge of the width combination w of the slab group determined by the width k in the steel grade t

e _kwt : The amount w∈W,k∈K,t∈T sent to the charge of the width combination w of the filter material slab group determined by the width k in the steel type t

T _wt : number of charges made of steel grade t width combination w w∈W, t∈T

T _w : number of charges made with width combination w w∈ W

I _w : 1 if the width combination w is used, otherwise 0

β _wt : Length difference between both strands of steel type t width combination w

ρ _wtl : width combination w, 1 if steel grade t occupies the lth position, otherwise 0, t∈T,w∈W,l∈{1.2....L _w }

D _wl : another cast plane starting from the lth position in width combination w 1, otherwise 0, w∈W,l∈{1.2....L _w }

g _wl : 1 if the cast made with the width combination w has a single continuation at the lth position, otherwise 0, w∈W,l∈{1.2....L _w }

G _w : 1 if the last cast of the width combination w is single, 0 otherwise, w∈W

π _kwtl : The amount of slabs sent to the lth section of a frame made of steel grade t, width k and width combination w. t∈T, k∈K, w∈W,l∈{1...L _w }

λ _kwtl : The amount of filter media sent to the lth charge of a frame made of steel type t, width k and width combination w. t∈T, k∈K, w∈W,l∈{1...L _w }

dif _wl : the length of the first strand at the lth position of the width combination w - the length of the second strand. w∈W,l∈{1...L _w }

α _wl : The absolute value of the length difference between strands at the lth position of the width combination w. w∈W,l∈{1...L _w }

purpose expression

Maximize

The above objective expression represents the objective expression of the mixed integer programming method for the cast frame generator 120, and values from P ₁ to P ₄ indicate the weight of each objective expression. The first expression next to P ₁ indicates the amount of knitting, the expression next to P ₂ indicates the number of casts, the expression next to P ₃ indicates the number of single performances, and the expression next to P ₄ indicates the amount of media.

In the case of the above-mentioned objective expression, since it is set to have a better solution the larger it is, the coefficient of the objective expression has a positive value for the amount of knitting, and has a negative value for the number of casts, number of single performances, and amount of filter media, which are the opposite .

The constraints for the objective expression are as follows.

The cast frame, which is a sea generated by the cast frame generating unit 120, includes the number of casts in the width combination w, the number of charges in the cast, and the steel grade. The width of both strands of the charge is determined by the width combination w. In the case of the generated cast frame, all other constraints except for the maximum number of charges within the cast and the constraints of the cast length are satisfied.

Since the frames generated by the cast frame generation unit 120 are generated based on the slab group, it is necessary to additionally fill already created casts and charges in units of slabs.

Again, referring to FIG. 1 , the slab arrangement unit 130 may place actual slabs inside the cast and charge frames made of slab groups. In other words, in a state where the width and steel grade of the cast and charges are determined, a given slab can be placed on the strand inside each charge. At the end of this step, the width of each slab is determined, and the cast, charge and internal position of the slabs are determined.

The slab arrangement unit 130 may include a cast cutting unit 131 and a slab arrangement calculation unit 132 .

The cast trimmer 131 may adjust the number of charges in the cast frame generated as a result of the cast frame generator 120 . A cast frame generated as a result of the cast frame generator 120 may not satisfy the maximum number of charges that can be included in one cast. Therefore, the cast cutout 131 plays a role in dividing casts that violate the limit on the number of charges so that they do not become single performances. For example, assuming that the maximum number of charges in the cast is limited to 9 and the single performance criterion is 3, at this time, if a frame with 10 charges in the cast is generated by the solution of the cast frame generation unit 120, the cast cutout ( 131) can be divided into 4 and 6 cast frames. Through the above-described operation, a frame for a charge and a cast that satisfies all conditions except for the cast length restriction is created.

The slab arrangement calculation unit 132 may allocate slabs to the inside of the above-described cast frame by defining and solving the slab arrangement mixed integer programming method.

The slab batch mixed integer programming method of the slab batch calculation unit 132 is as follows.

set of exponents

K: exponential set of widths

I: Exponential set of slabs

S={0,1}: the exponential set of strands

M: exponential set of charges

N: the exponential set of casts

)T _n : charge indices inside the cast n∈N (

)

parameter

W _ms : width of strand s of charge m m∈M, s∈S, W _ms ∈K

l _ik : Length i∈I,k∈K when slab i is made with width k

D _ik : Weight i∈I,k∈K when slab i is made with width k

C _min ,C _max : Charge minimum, maximum weight

C' _min : Minimum net weight of charge

A _max : maximum length difference charged (=E _max )

B _max : Cast maximum length difference (=E _max )

δ _ims : 1 if it is possible for slab i to be located on occupancy m, strand s, otherwise 0, i∈I, m∈M, s∈S (width range and steel grade must match)

decision variable

x _ims : m occupied by slab i, 1 if located on strand s, otherwise 0

e _ms : amount of media made from strand s of charge m

d ^+m : length of strand #0 of charge m - length of strand #1

d ^-m : length of strand #1 of charge m - length of strand #0

purpose expression

Maximize

In this step, since the number of charges in the cast, the width of the strand, the order of charge, and the type of steel have already been determined, it consists of only the first objective formula to maximize the knitting amount and the second objective formula to minimize the filter media. Like the above cast frame generation unit 120, the coefficient of the objective expression of the amount of knitting has a positive value, and the coefficient of the objective expression of the media has a negative value.

The constraints of the slab batch mixed integer programming method are as follows.

As noted in the above constraints, first of all, the slab width range and steel type constraints are determined only by δ _ims , which is a variable indicating where the slab can enter the charge. In addition, since the position of the charge inside the cast has already been determined, the moment the slab will enter the charge, the cast is also determined. Therefore, in the case of this slab batch mixed integer programming method, there is no need to include the cast dimension in the decision variable unnecessarily, so the number of decision variables is reduced, and therefore the calculation speed of the mixed integer programming method is increased. In addition, because of the existence of em _ms , which is a variable representing the filtering amount of strand s of charge m, a feasible solution is found.

So far, the entire process of the present invention has been described. First, a slab group is created through a data preprocessing process, and a cast and charge frame is created through the three-step mixed integer programming method and three auxiliary steps using the slab group, and finally, slabs are placed inside the cast frame do. Through the above-described process, the charge and slab configuration inside the cast before the playing step are created.

As described above, the present invention can organize cast and charge using a given input slab order.

The productivity of the combined cast and charge is measured through an index such as the objective expression of the mixed integer programming method described above. That is, productivity can be measured through four indicators: the amount of slab formation, the number of casts, the number of single runs, and the amount of filter media.

4 is a table showing conditions of first to third data set to indicate technical effects of a heavy plate slab production design device according to an embodiment of the present invention.

Referring to FIG. 4, the effect was confirmed by comparing the existing method and the method according to the present invention with four given indicators. The specific gravity between each indicator was compared with the existing method and the method according to the present invention with the given four indicators to confirm the effect. The proportion between each index was determined through an experiment, and it was set that 100 tons of knitting amount would be lost if one cast was increased, and 100 tons of knitting would be lost if one single cast was increased. In addition, if 1 ton of filter media is used, it is set to lose 1 ton of knitting. The input data selected for comparison is the currently organized Charge and Cast separated by slab units, and there are a total of three test data, which are indicated as first data, second data, and third data, respectively.

The comparison results are shown in Table 1 below.

(Table 1)

Table 1 above compares the existing method for field data with the method of the present invention. In the case of the objective formula value, it is calculated as (amount of knitting) - (100 × number of casts) - (100 × number of single runs) - (amount of filter media).

First, Data Nos. 1 and 2 (first data, second data) showed superior results to the method of the present invention with respect to the amount of knitting, the number of casts, the number of percussions, and the amount of media. In the case of Data No. 3 (data 3), the method of the present invention showed superior results for all indicators except for the amount of filter media, and the method of the present invention also showed higher values for the objective expression value, which is a comprehensive indicator. Therefore, it can be seen that the method of the present invention exhibits superior performance to the existing method in the above data set. However, since the number of experiments was insufficient to prove that the method of the present invention is universally excellent only with the above experiment, the following experiment was performed to compensate for this.

The second experiment is to randomly create similar data of 100 each for Data 1, 2, and 3 (hereinafter referred to as regeneration). As can be seen in FIG. 4, each data has different characteristics, and since the amount of slabs for each steel type is redistributed when randomly generating data, various results can be aggregated through experiments. Therefore, 300 additional experiments can prove the universal superiority of the present invention.

Table 2 below shows the experimental results obtained through data regenerated by 100 for each data.

(Table 2)

In the case of the results of regeneration with Data 1, 2, and 3, it can be confirmed that the method of the present invention is superior to all indicators on average.

Therefore, if the methodology of the present invention is applied, it is possible to knit a cast and a charge with higher productivity than the existing invention. In particular, it can be seen that the indicators for the number of casts and the number of single performances, which are most important in maximizing the usability of the tundish, which is the purpose of the present invention, have been significantly improved.

5 is a diagram illustrating an exemplary computing environment in which a heavy plate slab production design device according to an embodiment of the present invention can be implemented.

Referring to FIG. 5 , an example of a system 1000 including a computing device 1100 configured to implement the above-described heavy plate slab production design apparatus is shown. For example, computing device 1100 may be a personal computer, server computer, handheld or laptop device, mobile device (mobile phone, personal digital assistant, media player, etc.), multiprocessor system, consumer electronics, mini computer, mainframe computer, distributed computing environments that include any of the foregoing systems or devices; and the like.

Computing device 1100 may include at least one processing unit 1110 and memory 1120 . Here, the processing unit 1110 may include, for example, a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Arrays (FPGA), and the like. and may have a plurality of cores. The memory 1120 may be volatile memory (eg, RAM, etc.), non-volatile memory (eg, ROM, flash memory, etc.), or a combination thereof.

Additionally, computing device 1100 may include additional storage 1130 . Storage 1130 includes, but is not limited to, magnetic storage, optical storage, and the like. The storage 1130 may store computer readable instructions for implementing one or more embodiments disclosed herein, and may also store other computer readable instructions for implementing an operating system, application programs, and the like. Computer readable instructions stored in storage 1130 may be loaded into memory 1120 for execution by processing unit 1110 .

Computing device 1100 can also include input device(s) 1140 and output device(s) 1150 . Here, input device(s) 1140 may include, for example, a keyboard, mouse, pen, voice input device, touch input device, infrared camera, video input device, or any other input device. Output device(s) 1150 may also include, for example, one or more displays, speakers, printers, or any other output devices, or the like. Additionally, computing device 1100 may use an input device or output device included in another computing device as input device(s) 1140 or output device(s) 1150 .

Computing device 1100 may also include communication connection(s) 1160 that allow it to communicate with other devices (eg, computing device 1300 ) over network 1200 . Here, communication connection(s) 1160 may be a modem, network interface card (NIC), integrated network interface, radio frequency transmitter/receiver, infrared port, USB connection, or other device for connecting computing device 1100 to other computing devices. May contain interfaces. Further, communication connection(s) 1160 may include a wired connection or a wireless connection.

Each component of the aforementioned computing device 1100 may be connected by various interconnections such as a bus (eg, peripheral component interconnection (PCI), USB, firmware (IEEE 1394), optical bus structure, etc.) and may be interconnected by networks.

Terms such as "pre-processing unit", "classifying unit", "joining unit", "cast frame generating unit", "slab arranging unit", "cast cutting unit", "slab arranging calculation unit" and the like used herein are generally Refers to a computer-related entity that is hardware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. For example, both the application running on the controller and the controller may be components. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer or distributed between two or more computers.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, but is limited by the claims to be described later, and the configuration of the present invention can be varied within a range that does not deviate from the technical spirit of the present invention. Those skilled in the art can easily know that the present invention can be changed and modified accordingly.

100: heavy plate slab production design device
110: pre-processing unit
111: classification unit
112: coupling part
120: cast frame generator
130: slab placement unit
131: cast cutout
132: slab arrangement calculation unit

Claims (14)

a data pre-processing unit that classifies the ordered slabs according to a pre-set bi-grade relationship and combines them into a plurality of slab groups according to a pre-set cast width candidate;
A cast frame generating unit for generating a cast frame in which the plurality of slab groups are arranged according to a mixed integer programming method having preset equations and constraints, a preset objective equation, and additional constraints; and
Slabs in units of slabs according to the slab batch mixed integer planning method having a target formula for maximizing the amount of formation and a target formula for minimizing filter media in advance in the cast frame manufactured on the basis of the plurality of slab groups by the cast frame generator slab placement unit for placing
Heavy plate slab production design device including a.
According to claim 1,
The data pre-processing unit
For slabs that exceed the weight corresponding to the product of the pre-set minimum charge weight and the ratio of the slabs not included in the order, subtracted from '1', Connected Component based on the above-mentioned relationship Classification unit for classifying the slabs according to; and
A coupling unit for combining the slabs classified according to the connecting component by the classifying unit into the slab group
Heavy plate slab production design device including a.
According to claim 1,
The cast frame generation unit includes a set of slab width and steel type indices, steel type and width information of the slab, information on the weight of charges included in the cast, parameters having strand length information for each cast and charge, steel type of the slab And according to the equation based on the weight of the slab group having the width set by the width combination, the amount of the slab group sent to the charge, the amount of the filter slab group sent to the charge, and the determination variables having the number of charges and the constraint condition A heavy plate slab production design device for generating the cast frame and the frame of the charge.
a data pre-processing unit that classifies the ordered slabs according to a pre-set bi-grade relationship and combines them into a plurality of slab groups according to a pre-set cast width candidate;
A cast frame generating unit for generating a cast frame in which the plurality of slab groups are arranged according to a mixed integer programming method having preset equations and constraints, a preset objective equation, and additional constraints; and
A slab arrangement unit for arranging slabs in units of slabs on the cast frame manufactured on the basis of the plurality of slab groups by the cast frame generation unit;
The slab arrangement part
a cast truncation unit adjusting the number of charges in the cast frame generated by the cast frame generation unit; and
The slab, the width of the slab, the cast, the charge, the set of exponents of the strand, the width of the charge, the length and weight according to the width of the slab, the minimum and maximum weight of the charge, the maximum length difference between strands of the charge, the cast The maximum length difference between the strands of the charge, a parameter determined according to the slab position of the strand of the charge, whether the slab position of the strand of the charge, the amount of filtering material made of the strand of the charge, Determined according to the length difference between the strands of the charge Slab arrangement calculation unit for calculating the slab arrangement in the cast frame with an objective expression based on the decision variable
Heavy plate slab production design device including a.
a data pre-processing unit that classifies the ordered slabs according to a pre-set bi-grade relationship and combines them into a plurality of slab groups according to a pre-set cast width candidate;
A cast frame generating unit for generating a cast frame in which the plurality of slab groups are arranged according to a mixed integer programming method having preset equations and constraints, a preset objective equation, and additional constraints; and
Slabs in units of slabs according to the slab batch mixed integer planning method having a target formula for maximizing the amount of formation and a target formula for minimizing filter media in advance in the cast frame manufactured on the basis of the plurality of slab groups by the cast frame generator slab placement unit for placing
A computer readable storage medium in which a program programmed to operate a thick plate slab production design device including a is stored.
According to claim 5,
The data pre-processing unit
For slabs that exceed the weight corresponding to the product of the pre-set minimum charge weight and the ratio of the slabs not included in the order, subtracted from '1', Connected Component based on the above-mentioned relationship Classification unit for classifying the slabs according to; and
A coupling unit for combining the slabs classified according to the connecting component by the classifying unit into the slab group
A computer-readable storage medium in which a program programmed to operate a thick plate slab production design device comprising a is stored.
According to claim 5,
The cast frame generation unit includes a set of slab width and steel type indices, steel type and width information of the slab, information on the weight of charges included in the cast, parameters having strand length information for each cast and charge, steel type of the slab And according to the equation based on the weight of the slab group having the width set by the width combination, the amount of the slab group sent to the charge, the amount of the filter slab group sent to the charge, and the determination variables having the number of charges and the constraint condition A computer-readable storage medium in which a program programmed to operate the heavy plate slab production design device generating the cast frame and the charge frame is stored.
a data pre-processing unit that classifies the ordered slabs according to a pre-set bi-grade relationship and combines them into a plurality of slab groups according to a pre-set cast width candidate;
A cast frame generating unit for generating a cast frame in which the plurality of slab groups are arranged according to a mixed integer programming method having preset equations and constraints, a preset objective equation, and additional constraints; and
A slab arrangement unit for arranging slabs in units of slabs on the cast frame manufactured on the basis of the plurality of slab groups by the cast frame generation unit;
The slab arrangement part
a cast truncation unit adjusting the number of charges in the cast frame generated by the cast frame generation unit; and
The slab, the width of the slab, the cast, the charge, the set of exponents of the strand, the width of the charge, the length and weight according to the width of the slab, the minimum and maximum weight of the charge, the maximum length difference between strands of the charge, the cast The maximum length difference between the strands of the charge, a parameter determined according to the slab position of the strand of the charge, whether the slab position of the strand of the charge, the amount of filtering material made of the strand of the charge, Determined according to the length difference between the strands of the charge Slab arrangement calculation unit for calculating the slab arrangement in the cast frame with an objective expression based on the decision variable
A computer-readable storage medium in which a program programmed to operate a thick plate slab production design device comprising a is stored.
According to claim 4,
The data pre-processing unit
For slabs that exceed the weight corresponding to the product of the pre-set minimum charge weight and the ratio of the slabs not included in the order, subtracted from '1', Connected Component based on the above-mentioned relationship Classification unit for classifying the slabs according to; and
A coupling unit for combining the slabs classified according to the connecting component by the classifying unit into the slab group
Heavy plate slab production design device including a.
According to claim 4,
The cast frame generation unit includes a set of slab width and steel type indices, steel type and width information of the slab, information on the weight of charges included in the cast, parameters having strand length information for each cast and charge, steel type of the slab And according to the equation based on the weight of the slab group having the width set by the width combination, the amount of the slab group sent to the charge, the amount of the filter slab group sent to the charge, and the determination variables having the number of charges and the constraint condition A heavy plate slab production design device for generating the cast frame and the frame of the charge.
According to claim 1,
The slab arrangement part
a cast truncation unit adjusting the number of charges in the cast frame generated by the cast frame generation unit; and
The slab, the width of the slab, the cast, the charge, the set of exponents of the strand, the width of the charge, the length and weight according to the width of the slab, the minimum and maximum weight of the charge, the maximum length difference between strands of the charge, the cast The maximum length difference between the strands of the charge, a parameter determined according to the slab position of the strand of the charge, whether the slab position of the strand of the charge, the amount of filtering material made of the strand of the charge, Determined according to the length difference between the strands of the charge Slab arrangement calculation unit for calculating the slab arrangement in the cast frame with an objective expression based on the decision variable
Heavy plate slab production design device including a.
A computer readable storage medium in which a program programmed to operate a thick plate slab production design device is stored.
According to claim 8,
The data pre-processing unit
For slabs that exceed the weight corresponding to the product of the pre-set minimum charge weight and the ratio of the slabs not included in the order, subtracted from '1', Connected Component based on the above-mentioned relationship Classification unit for classifying the slabs according to; and
A coupling unit for combining the slabs classified according to the connecting component by the classifying unit into the slab group
A computer-readable storage medium in which a program programmed to operate a thick plate slab production design device comprising a is stored.
According to claim 8,
The cast frame generation unit includes a set of slab width and steel type indices, steel type and width information of the slab, information on the weight of charges included in the cast, parameters having strand length information for each cast and charge, steel type of the slab And according to the equation based on the weight of the slab group having the width set by the width combination, the amount of the slab group sent to the charge, the amount of the filter slab group sent to the charge, and the determination variables having the number of charges and the constraint condition A computer-readable storage medium in which a program programmed to operate the heavy plate slab production design device generating the cast frame and the charge frame is stored.
According to claim 5,
The slab arrangement part
a cast truncation unit adjusting the number of charges in the cast frame generated by the cast frame generation unit; and
The slab, the width of the slab, the cast, the charge, the set of exponents of the strand, the width of the charge, the length and weight according to the width of the slab, the minimum and maximum weight of the charge, the maximum length difference between strands of the charge, the cast The maximum length difference between the strands of the charge, a parameter determined according to the slab position of the strand of the charge, whether the slab position of the strand of the charge, the amount of filtering material made of the strand of the charge, Determined according to the length difference between the strands of the charge Slab arrangement calculation unit for calculating the slab arrangement in the cast frame with an objective expression based on the decision variable
A computer-readable storage medium in which a program programmed to operate a thick plate slab production design device comprising a is stored.

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