KR101246313B1 - Rolling control method using temperature compensation - Google Patents

Rolling control method using temperature compensation Download PDF

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KR101246313B1
KR101246313B1 KR1020110009046A KR20110009046A KR101246313B1 KR 101246313 B1 KR101246313 B1 KR 101246313B1 KR 1020110009046 A KR1020110009046 A KR 1020110009046A KR 20110009046 A KR20110009046 A KR 20110009046A KR 101246313 B1 KR101246313 B1 KR 101246313B1
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rolling
width
temperature
winding
temperature compensation
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KR1020110009046A
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Korean (ko)
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KR20120087693A (en
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강기수
정석환
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현대제철 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/06—Width
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature

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  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

본 발명은 온도보상을 통한 압연 제어장치 및 그 방법에 관한 것으로서, 압연기의 출측과 권취기의 입측에서 측정된 압연재의 폭을 기반으로 산출된 온도보상계수를 적용하여 냉간폭을 정확하게 예측하여 폭계의 측정 정확도를 향상시킬 수 있을 뿐만 아니라 정확한 냉간폭의 예측으로 압연공정에서 폭오차를 최소화할 수 있다. The present invention relates to a rolling control apparatus and a method through temperature compensation, by applying a temperature compensation coefficient calculated on the basis of the width of the rolling material measured at the exit side of the rolling mill and the entrance side of the winding machine to accurately predict the cold width width gauge In addition to improving the accuracy of the measurement, it is possible to minimize the width error in the rolling process by accurately predicting the cold width.

Description

온도보상을 통한 압연 제어방법{ROLLING CONTROL METHOD USING TEMPERATURE COMPENSATION}Rolling control method through temperature compensation {ROLLING CONTROL METHOD USING TEMPERATURE COMPENSATION}

본 발명은 온도보상을 통한 압연 제어방법에 관한 것으로서, 보다 상세하게는 압연기의 출측과 권취기의 입측에서 측정된 압연재의 폭을 기반으로 냉간폭을 정확하게 예측함으로써 폭오차를 최소화할 수 있도록 한 온도보상을 통한 압연 제어방법에 관한 것이다.
The present invention relates to a rolling control method through temperature compensation, and more particularly, to accurately predict the cold width based on the width of the rolled material measured at the exit of the rolling mill and the entrance of the winding machine, thereby minimizing the width error. It relates to a rolling control method through temperature compensation.

일반적인 철강제조는 용선을 생산하는 제선공정, 용선에서 불순물을 제거하는 제강공정, 액체상태의 철을 고체로 변형시키는 연주공정, 철을 강판이나 선재로 만드는 압연공정으로 이루어진다.Typical steelmaking consists of a steelmaking process to produce molten iron, a steelmaking process to remove impurities from molten iron, a casting process to transform solid iron into solid, and a rolling process to make iron into steel or wire.

이 중 압연공정은 연주 공정에서 생산된 슬래브, 블룸, 빌릿 등의 소재를 회전하는 여러 개의 롤 사이를 통과시켜 연속적인 힘을 가하여 늘리거나 얇게 만드는 과정을 말하며 크게 열간압연과 냉간압연으로 나뉜다.
Among them, the rolling process refers to a process of increasing or thinning the slab, bloom, billet, etc. produced in the playing process by passing through a plurality of rotating rolls and applying a continuous force, and is divided into hot rolling and cold rolling.

위에서 설명한 기술은 본 발명이 속하는 기술분야의 배경기술을 의미하며, 종래기술을 의미하는 것은 아니다.
The technology described above refers to the background of the technical field to which the present invention belongs, and does not mean the prior art.

본 발명은 압연기의 출측과 권취기의 입측에서 측정된 압연재의 폭을 기반으로 산출된 온도보상계수를 적용하여 냉간폭을 정확하게 예측하여 폭계의 측정정확도를 향상시킬 수 있을 뿐만 아니라 정확한 냉간폭의 예측으로 압연공정에서 폭오차를 최소화할 수 있도록 한 온도보상을 통한 압연 제어방법을 제공하는데 그 목적이 있다.
The present invention not only improves the measurement accuracy of the width gauge by accurately predicting the cold width by applying the temperature compensation coefficient calculated based on the width of the rolled material measured at the exit of the rolling mill and the entrance of the winding machine. The purpose of the present invention is to provide a rolling control method through temperature compensation to minimize the width error in the rolling process.

본 발명의 일 측면에 따른 온도보상을 통한 압연 제어방법은 설정값에 따라 압연을 수행하면서 압연기의 출측에서 압연재의 압연폭과 압연온도를 측정하는 단계; 권취기의 입측에서 압연재의 권취폭과 권취온도를 측정하는 단계; 압연폭, 압연온도, 권취폭, 권취온도를 기반으로 온도보상계수를 산출하는 단계; 및 산출된 온도보상계수를 적용하여 압연을 수행하는 단계를 포함하는 것을 특징으로 한다. Rolling control method through the temperature compensation according to an aspect of the present invention comprises the steps of measuring the rolling width and the rolling temperature of the rolling material at the exit side of the rolling mill while performing the rolling according to the set value; Measuring the winding width and the winding temperature of the rolled material at the inlet side of the winder; Calculating a temperature compensation coefficient based on the rolling width, the rolling temperature, the winding width, and the winding temperature; And performing rolling by applying the calculated temperature compensation coefficient.

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본 발명에서 설정값은 압연조건, 압연재 두께, 냉각조건, 온도보상계수를 포함하는 것을 특징으로 한다. In the present invention, the set value is characterized by including the rolling conditions, the thickness of the rolling material, the cooling conditions, the temperature compensation coefficient.

본 발명에서 압연폭과 압연온도를 측정하는 단계 및 권취폭과 권취온도를 측정하는 단계는 압연재의 중간부위에서 측정하는 것을 특징으로 한다. In the present invention, the step of measuring the rolling width and the rolling temperature and the step of measuring the winding width and the winding temperature are characterized in that it is measured in the middle of the rolled material.

이때 압연폭, 압연온도, 권취폭 및 권취온도는 중간부위에서 측정된 평균값인 것을 특징으로 한다. At this time, the rolling width, the rolling temperature, the winding width and the winding temperature is characterized in that the average value measured at the intermediate portion.

또한, 중간부위는 압연재의 전체 길이를 3등분 한 중간인 것을 특징으로 한다. In addition, the intermediate portion is characterized in that the middle of the total length of the rolled material divided into three.

본 발명에서 온도보상계수는 아래식 2에 의해 산출되는 것을 특징으로 한다. In the present invention, the temperature compensation coefficient is calculated by Equation 2 below.

(아래식 2)(Equation 2)

Figure 112011007315912-pat00002
Figure 112011007315912-pat00002

이때 α는 온도보상계수이고, Wh는 압연폭이고, Wd는 권취폭이며, ΔT는 압연온도와 권취온도의 온도차이다.
Where α is the temperature compensation coefficient, Wh is the rolling width, Wd is the winding width, and ΔT is the temperature difference between the rolling temperature and the winding temperature.

상기한 바와 같이 본 발명은 압연기의 출측과 권취기의 입측에서 측정된 압연재의 폭을 기반으로 산출된 온도보상계수를 적용하여 냉간폭을 정확하게 예측하여 폭계의 측정정확도를 향상시킬 수 있을 뿐만 아니라 정확한 냉간폭의 예측으로 압연공정에서 폭오차를 최소화할 수 있다.
As described above, the present invention can not only improve the accuracy of measuring the width gauge by accurately predicting the cold width by applying the temperature compensation coefficient calculated based on the width of the rolled material measured at the exit of the rolling mill and the entrance of the winding machine. Accurate prediction of cold width can minimize the width error in rolling process.

도 1은 본 발명의 일 실시예에 따른 온도보상을 통한 압연 제어장치를 나타낸 블록구성도이다.
도 2는 본 발명의 일 실시예에 따른 온도보상을 통한 압연 제어장치를 나타낸 구체적인 예시도이다.
도 3은 본 발명의 일 실시예에 따른 온도보상을 통한 압연 제어방법을 설명하기 위한 흐름도이다. 1 is a block diagram showing a rolling control device through temperature compensation according to an embodiment of the present invention.
Figure 2 is a specific illustration showing a rolling control device through temperature compensation according to an embodiment of the present invention.
3 is a flowchart illustrating a rolling control method through temperature compensation according to an embodiment of the present invention.

이하, 첨부된 도면을 참조하여 본 발명에 따른 온도보상을 통한 압연 제어방법의 일 실시예를 설명한다. 이 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Hereinafter, an embodiment of a rolling control method through temperature compensation according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

도 1은 본 발명의 일 실시예에 따른 온도보상을 통한 압연 제어장치를 나타낸 블록구성도이고, 도 2는 본 발명의 일 실시예에 따른 온도보상을 통한 압연 제어장치를 나타낸 구체적인 예시도이다. 1 is a block diagram showing a rolling control device through a temperature compensation according to an embodiment of the present invention, Figure 2 is a specific illustration showing a rolling control device through a temperature compensation according to an embodiment of the present invention.

도 1 및 도 2에 도시된 바와 같이 본 발명의 일 실시예에 따른 온도보상을 통한 압연 제어장치는 압연기(60), 압연기 폭계(10), 압연온도센서(20), 권취기 폭계(30), 권취온도센서(40), 사용자 입력부(70) 및 제어부(50)를 포함한다. 1 and 2, the rolling control apparatus through temperature compensation according to an embodiment of the present invention includes a rolling mill 60, a rolling mill width meter 10, a rolling temperature sensor 20, and a winder width meter 30. , The winding temperature sensor 40, the user input unit 70 and the control unit 50.

압연기(60)는 다수개의 상부작업롤(61) 및 상부지지롤(62)과 다수개의 하부작업롤(63) 및 하부지지롤(64)에 의해 입력되는 압연재(5)를 설정값에 따라 압연을 수행하여 출력한다. The rolling mill 60 receives the rolling material 5 inputted by the plurality of upper work rolls 61 and the upper support rolls 62 and the plurality of lower work rolls 63 and the lower support rolls 64 according to a set value. Perform rolling and output.

이때 설정값으로는 압연조건, 압연재 두께, 냉각조건 및 초기의 온도보상계수를 포함한다. The set values include rolling conditions, rolling material thicknesses, cooling conditions and initial temperature compensation coefficients.

압연기 폭계(10) 및 압연온도센서(20)는 압연기(60)의 출측에 설치되어 압연재(5)의 압연폭 및 압연온도를 측정한다. The rolling mill width gauge 10 and the rolling temperature sensor 20 are installed at the exit side of the rolling mill 60 to measure the rolling width and the rolling temperature of the rolling material 5.

권취기 폭계(30) 및 권취온도센서(40)는 권취기(90)의 입측에 설치되어 압연재(5)의 권취폭 및 권취온도를 측정한다. The winding machine width meter 30 and the winding temperature sensor 40 are installed at the entrance side of the winding machine 90 to measure the winding width and the winding temperature of the rolled material 5.

압연폭 및 압연온도와 권취폭 및 권취온도는 압연이 안정적으로 이루어지는 압연재(5)의 중간부위에서 측정함으로써 보다 정확한 측정값을 얻을 수 있으며, 중간부위의 평균값을 취함으로써 측정오차를 최소화할 수 있다. Rolling width, rolling temperature, winding width and winding temperature can be obtained more precisely by measuring at the middle part of the rolled material (5) where rolling is stable, and the measurement error can be minimized by taking the average value of the middle part. have.

이때 중간부위는 압연재(5)의 전체 길이를 3등분 한 중간으로써 선단부의 1/3과 후단부의 1/3을 제외한 부위로 정의할 수 있다. In this case, the middle part may be defined as a part excluding the 1/3 of the front end part and the 1/3 of the rear end part as a middle obtained by dividing the entire length of the rolled material 5 into three parts.

사용자 입력부(70)는 압연제어를 위한 설정값으로 압연조건, 압연재 두께, 냉각조건 및 초기의 온도보상계수를 입력하여 압연이 수행되도록 한다. The user input unit 70 inputs a rolling condition, a rolling material thickness, a cooling condition, and an initial temperature compensation coefficient as a set value for rolling control so that rolling is performed.

제어부(50)는 압연기 폭계(10), 압연온도센서(20), 권취기 폭계(30), 권취온도센서(40)에서 측정된 측정값을 기반으로 온도보상계수를 산출하고 사용자 입력부(70)로부터 입력된 설정값 및 산출된 온도보상계수를 적용하여 압연기(60)를 제어한다. The controller 50 calculates a temperature compensation coefficient based on the measured values measured by the rolling mill width gauge 10, the rolling temperature sensor 20, the winder width gauge 30, and the winding temperature sensor 40, and the user input unit 70. The rolling mill 60 is controlled by applying the set value inputted from the calculated value and the calculated temperature compensation coefficient.

이때 온도보상계수는 수학식 1과 같이 산출할 수 있다. In this case, the temperature compensation coefficient may be calculated as in Equation 1.

Figure 112011007315912-pat00003
Figure 112011007315912-pat00003

이때 α는 온도보상계수이고, Wh는 압연폭이고, Wd는 권취폭이며, ΔT는 압연온도와 권취온도의 온도차이다. Where α is the temperature compensation coefficient, Wh is the rolling width, Wd is the winding width, and ΔT is the temperature difference between the rolling temperature and the winding temperature.

이와 같이 본 발명에 의한 온도보상을 통한 압연 제어장치는 압연기(60)의 폭제어 및 최종 제품의 품질을 보증하기 위해 압연재(5)의 열간폭을 정확하게 측정하여 원하는 냉간폭을 갖는 압연재(5)를 생산할 수 있도록 압연기(60)를 제어하게 된다. As described above, the rolling control apparatus using temperature compensation according to the present invention accurately measures the hot width of the rolling material 5 to ensure the width control of the rolling mill 60 and the quality of the final product. 5) to control the rolling mill 60 to produce.

따라서, 압연조건, 압연재 두께, 냉각조건에 의해 결정되는 온도에 따라 변화되는 냉간폭을 예측하기 위해 압연기(60)의 출측에서 측정되는 압연기 폭계(10)를 통해 온도보상계수를 적용하여 상온상태에서의 냉간폭을 예측하게 된다. Therefore, in order to predict the cold width that varies according to the temperature determined by the rolling conditions, the thickness of the rolling material, and the cooling conditions, the temperature compensation coefficient is applied through the rolling mill width gauge 10 measured at the exit of the rolling mill 60. We predict the cold width at.

초기 설정된 온도보상계수의 경우 온도와 강종에 따라 상수값으로 설정하고 있다. 그러나, 실질적으로 압연폭을 측정하는 위치에서의 압연온도는 700~920도 사이로써 강의 상변태 온도인 700도를 초과하기 때문에 압연조건, 압연재의 두께, 냉각조건의 영향을 받는 온도이다. Initially set temperature compensation coefficient is set as a constant value according to temperature and steel grade. However, since the rolling temperature at the position where the rolling width is measured substantially is 700 to 920 degrees and exceeds the phase transformation temperature of steel, it is a temperature affected by the rolling conditions, the thickness of the rolled material and the cooling conditions.

따라서, 실질적으로 압연을 진행하면서 압연조건, 압연재 두께, 냉각조건의 영향을 보상하여 압연제어를 수행하기 위해 압연조건, 압연재 두께, 냉각조건의 영향이 미미한 400~700도 사이의 지점인 권취기(90)의 입측에서 측정된 권취폭 및 권취온도를 통해 산출된 온도보상계수를 적용하여 상온상태에서의 냉간폭을 수학식 2에 의해 정확하게 예측할 수 있다. Therefore, in order to perform the rolling control by compensating the influence of the rolling conditions, the thickness of the rolling material, and the cooling conditions while the rolling is carried out, the winding is a point between 400 and 700 degrees with the least influence of the rolling conditions, the thickness of the rolling material, and the cooling conditions. By applying the temperature compensation coefficient calculated through the winding width and the winding temperature measured at the inlet side of the odor 90, it is possible to accurately predict the cold width at room temperature by Equation 2.

Figure 112011007315912-pat00004
Figure 112011007315912-pat00004

이때 Wc는 냉간폭이고, Wh는 압연폭이며, α는 온도보상계수이고, ΔTc는 압연온도와 상온의 온도차이다. At this time, Wc is the cold width, Wh is the rolling width, α is the temperature compensation coefficient, ΔTc is the temperature difference between the rolling temperature and room temperature.

이렇게 압연폭을 측정하여 정확한 냉간폭을 예측함으로써 압연기 폭계(10)의 측정 정확도를 향상시킬 수 있으며, 이 값을 적용하여 압연제어를 수행함으로써 최종제품의 품질을 향상시킬 수 있다.
In this way, by measuring the rolling width to predict the accurate cold width can improve the measurement accuracy of the rolling mill width gauge 10, by applying this value to the rolling control can improve the quality of the final product.

도 3은 본 발명의 일 실시예에 따른 온도보상을 통한 압연 제어방법을 설명하기 위한 흐름도이다. 3 is a flowchart illustrating a rolling control method through temperature compensation according to an embodiment of the present invention.

먼저, 사용자가 압연제어를 위해 입력한 압연조건, 압연재 두께, 냉각조건 및 초기의 온도보상계수를 포함하는 설정값에 따라 압연을 수행한다(S10). First, rolling is performed according to a set value including a rolling condition, a rolling material thickness, a cooling condition, and an initial temperature compensation coefficient input by a user for rolling control (S10).

이때 초기 설정되는 온도보상계수는 온도와 강종에 따라 상수값으로 설정된다. At this time, the temperature compensation coefficient that is initially set is set to a constant value according to the temperature and steel grade.

이와 같이 설정값에 따라 압연을 수행하면서 압연기(60)의 출측에서 압연재(5)의 압연폭과 압연온도를 측정하고, 권취기(90)의 입측에서 압연재(5)의 권취폭과 권취온도를 측정한다(S20)(S30). As described above, the rolling width and the rolling temperature of the rolling material 5 are measured at the exit side of the rolling mill 60 while the rolling is performed according to the set value, and the winding width and the winding width of the rolling material 5 are at the entrance side of the winding machine 90. The temperature is measured (S20) (S30).

이때 압연폭 및 압연온도와 권취폭 및 권취온도는 압연이 안정적으로 이루어지는 압연재(5)의 중간부위에서 측정하여 보다 정확한 측정값을 얻을 수 있도록 하며, 중간부위의 평균값으로 취함으로써 측정오차를 최소화할 수 있도록 한다. At this time, the rolling width, the rolling temperature, the winding width and the winding temperature are measured at the middle part of the rolled material (5) where rolling is stably obtained, so that more accurate measurement value can be obtained, and the measurement error is minimized by taking the average value of the middle part. Do it.

중간부위는 압연재(5)의 전체 길이를 3등분 한 중간으로써 선단부의 1/3과 후단부의 1/3을 제외한 부위로 정의할 수 있다. The middle portion may be defined as a portion excluding the 1/3 of the front end portion and 1/3 of the rear end portion as a middle obtained by dividing the total length of the rolled material 5 into three parts.

이후 측정된 압연폭, 압연온도, 권취폭, 권취온도를 기반으로 수학식 3에 의해 온도보상계수를 산출한다(S40). Thereafter, the temperature compensation coefficient is calculated by using Equation 3 based on the measured rolling width, rolling temperature, winding width, and winding temperature (S40).

Figure 112011007315912-pat00005
Figure 112011007315912-pat00005

이때 α는 온도보상계수이고, Wh는 압연폭이고, Wd는 권취폭이며, ΔT는 압연온도와 권취온도의 온도차이다. Where α is the temperature compensation coefficient, Wh is the rolling width, Wd is the winding width, and ΔT is the temperature difference between the rolling temperature and the winding temperature.

이렇게 산출된 온도보상계수는 다음 압연재를 압연할 때 적용하여 실질적으로 압연조건이 변하더라도 이를 반영하여 냉간폭을 정확하게 예측하여 이를 압연제어에 반영함으로써 원하는 냉간폭을 갖는 압연재(5)를 생산할 수 있다(S50). The calculated temperature compensation coefficient is then applied when rolling the next rolled material so that even if the rolling conditions are changed substantially, the cold width is accurately predicted and reflected in the rolling control to produce the rolled material 5 having the desired cold width. It may be (S50).

이때 상온상태에서의 냉간폭은 수학식 4에 의해 정확하게 예측할 수 있다. At this time, the cold width at room temperature can be accurately predicted by Equation 4.

Figure 112011007315912-pat00006
Figure 112011007315912-pat00006

이때 Wc는 냉간폭이고, Wh는 압연폭이며, α는 온도보상계수이고, ΔTc는 압연온도와 상온(25℃)의 온도차이다. At this time, Wc is the cold width, Wh is the rolling width, α is the temperature compensation coefficient, ΔTc is the temperature difference between the rolling temperature and room temperature (25 ℃).

이와 같이 본 발명에 의한 온도보상을 통한 압연 제어방법은 초기 설정값에 의해 압연을 수행하면서 측정된 압연폭, 압연온도, 권취폭, 권취온도를 기반으로 압연조건, 압연재 두께, 냉각조건에 따른 영향을 보상하기 위해 온도보상계수를 산출하여 연속 생산되는 다음 압연재(5)의 생산에 반영하여 압연기 폭계(10)를 통한 냉간폭을 정확하게 예측함으로써 압연기 폭계(10)의 측정 정확도를 향상시킬 수 있으며, 이 값을 적용하여 압연제어를 수행함으로써 최종제품의 품질을 향상시킬 수 있다.
As described above, the rolling control method using temperature compensation according to the present invention is based on the rolling width, the rolling temperature, the winding width, and the winding temperature measured while performing the rolling by the initial set value. In order to compensate for the influence, it is possible to improve the measurement accuracy of the rolling mill width gauge 10 by accurately predicting the cold width through the rolling mill width gauge 10 by calculating the temperature compensation coefficient and reflecting it in the production of the next rolling material 5 continuously produced. By applying this value, rolling control can be performed to improve the quality of the final product.

본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

5 : 압연재 10 : 압연기 폭계
20 : 압연온도센서 30 : 권취기 폭계
40 : 권취온도센서 50 : 제어부
60 : 압연기 70 : 사용자 입력부
80 : 냉각대 90 : 권취기5: rolling material 10: rolling mill width gauge
20: rolling temperature sensor 30: winder width gauge
40: winding temperature sensor 50: control unit
60: rolling mill 70: user input unit
80: cooling stand 90: winder

Claims (11)

삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 설정값에 따라 압연을 수행하면서 압연기의 출측에서 압연재의 압연폭과 압연온도를 측정하는 단계;
권취기의 입측에서 상기 압연재의 권취폭과 권취온도를 측정하는 단계;
상기 압연폭, 상기 압연온도, 상기 권취폭, 상기 권취온도를 기반으로 온도보상계수를 산출하는 단계; 및
산출된 상기 온도보상계수를 적용하여 상기 압연을 수행하는 단계를 포함하는 것을 특징으로 하는 온도보상을 통한 압연 제어방법.
Measuring rolling width and rolling temperature of the rolling material at the exit side of the rolling mill while performing rolling according to the set value;
Measuring the winding width and the winding temperature of the rolled material at the entrance side of the winding machine;
Calculating a temperature compensation coefficient based on the rolling width, the rolling temperature, the winding width, and the winding temperature; And
Rolling control method through the temperature compensation comprising the step of performing the rolling by applying the calculated temperature compensation coefficient.
제 6항에 있어서, 상기 설정값은 압연조건, 압연재 두께, 냉각조건, 온도보상계수를 포함하는 것을 특징으로 하는 온도보상을 통한 압연 제어방법.
7. The method of claim 6, wherein the set value includes a rolling condition, a rolling material thickness, a cooling condition, and a temperature compensation coefficient.
제 6항에 있어서, 상기 압연폭과 상기 압연온도를 측정하는 단계 및 상기 권취폭과 상기 권취온도를 측정하는 단계는 상기 압연재의 중간부위에서 측정하는 것을 특징으로 하는 온도보상을 통한 압연 제어방법.
The method of claim 6, wherein the measuring of the rolling width and the rolling temperature and the measuring of the winding width and the winding temperature are performed at an intermediate portion of the rolled material. .
제 8항에 있어서, 상기 압연폭, 상기 압연온도, 상기 권취폭 및 상기 권취온도는 상기 중간부위에서 측정된 평균값인 것을 특징으로 하는 온도보상을 통한 압연 제어방법.
The method of claim 8, wherein the rolling width, the rolling temperature, the winding width, and the winding temperature are average values measured at the intermediate portion.
제 8항에 있어서, 상기 중간부위는 상기 압연재의 전체 길이를 3등분 한 중간인 것을 특징으로 하는 온도보상을 통한 압연 제어방법.
The rolling control method according to claim 8, wherein the intermediate portion is a middle obtained by dividing the entire length of the rolled material into three equal parts.
제 6항에 있어서, 상기 온도보상계수는 아래식 2에 의해 산출되는 것을 특징으로 하는 온도보상을 통한 압연 제어방법.
(아래식 2)
Figure 112011007315912-pat00008

이때 α는 온도보상계수이고, Wh는 압연폭이고, Wc는 권취폭이며, ΔT는 압연온도와 권취온도의 온도차이다. The method of claim 6, wherein the temperature compensation coefficient is calculated by Equation 2 below.
(Equation 2)
Figure 112011007315912-pat00008

Where α is the temperature compensation coefficient, Wh is the rolling width, Wc is the winding width, and ΔT is the temperature difference between the rolling temperature and the winding temperature.
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JPH07303909A (en) * 1994-05-16 1995-11-21 Nippon Steel Corp Device for automaticaly correcting setup of width in rough hot rolling
KR19990050913A (en) * 1997-12-17 1999-07-05 이구택 Prediction Method and Prediction Method for Width Characteristics of Hot Rolled Steel Sheet
JP2001255136A (en) 2000-03-13 2001-09-21 Kawasaki Steel Corp On-line measuring accuracy inspecting method for width and length measuring instruments
KR20030029609A (en) * 2000-10-04 2003-04-14 신닛뽄세이테쯔 카부시키카이샤 Sheet width control method in hot rolling

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Publication number Priority date Publication date Assignee Title
JPH07303909A (en) * 1994-05-16 1995-11-21 Nippon Steel Corp Device for automaticaly correcting setup of width in rough hot rolling
KR19990050913A (en) * 1997-12-17 1999-07-05 이구택 Prediction Method and Prediction Method for Width Characteristics of Hot Rolled Steel Sheet
JP2001255136A (en) 2000-03-13 2001-09-21 Kawasaki Steel Corp On-line measuring accuracy inspecting method for width and length measuring instruments
KR20030029609A (en) * 2000-10-04 2003-04-14 신닛뽄세이테쯔 카부시키카이샤 Sheet width control method in hot rolling

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