KR970033153A - Width control method of thick steel plate - Google Patents

Width control method of thick steel plate Download PDF

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Publication number
KR970033153A
KR970033153A KR1019950049560A KR19950049560A KR970033153A KR 970033153 A KR970033153 A KR 970033153A KR 1019950049560 A KR1019950049560 A KR 1019950049560A KR 19950049560 A KR19950049560 A KR 19950049560A KR 970033153 A KR970033153 A KR 970033153A
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KR
South Korea
Prior art keywords
width
rolling
steel slab
weight
steel
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KR1019950049560A
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Korean (ko)
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KR100236165B1 (en
Inventor
남구원
김영헌
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김종진
포항종합제철주식회사
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Priority to KR1019950049560A priority Critical patent/KR100236165B1/en
Publication of KR970033153A publication Critical patent/KR970033153A/en
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Publication of KR100236165B1 publication Critical patent/KR100236165B1/en

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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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
    • 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
    • B21B2261/04—Thickness, gauge
    • 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
    • B21B2261/18—Weight

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)

Abstract

본 발명은 강슬라브를 조압연기에서 후판압연하는 방법에 관한 것으로써, 강 슬라브를 가열로에 장입하기전에 강슬라브의 중량의 측정하고, 이 중량을 폭내기 압연전의 강판두께의 추정에 활용하므로써, 후판압연에서의 폭내기 압연시 목표폭과 실제폭과의 편차를 최소화할 수 있는 후강판의 폭제어방법을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a method for thick-rolling a steel slab in a rough rolling mill, by measuring the weight of a steel slab before charging the steel slab in a heating furnace, and using the weight for estimating the thickness of the steel sheet before deburring rolling. It is an object of the present invention to provide a width control method for thick steel plates that can minimize the deviation between the target width and the actual width during rolling.

본 발명은 강슬라브를 가열로에서 가열한후 조압연기로 이송시킨 다음 조압연기에서 폭내기압연을 행하는 후강판의 폭을 제어하는 방법에 있어서, 폭내기 압연후의 후강판의 목표폭(Wr)을 설정하는 단계: 상기 가열로에서 가열하기전에 강 슬라브의 중량(WEo)을 측정하고, 이 중량(WEo)이 기준중량범위를 벗어나는지 여부를 판단하는 단계; 그 중량이 기준중량범위를 벗어나지 않는 강슬라브에 대하여 상기 조압연기에서 압연하기전에 강슬라브의 폭(Wo)과 길이(Lo)를 측정하는 단계; 상기와 같이 측정된 강 슬라브의 중량(WEo), 폭(Wo) 및 길이(Lo) 값을 이용하여 하기 식과 같이 환산두께(Hoc)를 구하는 단계;상기와 같이 측정된 강 슬라브의 폭(Wo), 환산두께(Hoc) 및 목표폭(Wr)을 이용하여 하기식에 의해 폭내기 압연후의 강판두께(Hrc)를 구하는 단계; 및The present invention is a method for controlling the width of the steel plate after the steel slab is heated in the heating furnace and transferred to the rough mill and then subjected to the depoking rolling in the rough mill, the target width (Wr) Setting: measuring the weight WEo of the steel slab before heating in the furnace, and determining whether the weight WEo is outside the reference weight range; Measuring a width (Wo) and a length (Lo) of the steel slab before rolling in the rough mill on the steel slab whose weight does not deviate from the reference weight range; Obtaining a conversion thickness Hoc as shown in the following equation using the weight WEo, width Wo, and length Lo of the steel slab measured as described above; Obtaining a steel sheet thickness (Hrc) after the bake rolling by the following formula using the width (Wo), the converted thickness (Hoc) and the target width (Wr) of the steel slab measured as described above; And

상기와 같이 폭내기 압연후의 강판두께(Hrc)가 얻어지도록 폭내기 압연조건을 제어하여 폭내기 압연하는 단계를 포함하여 구성되는 후강판의 폭제어방법을 그 요지로 한다.As a main point, the width control method of the thick steel sheet including the step of controlling the width of the width of the steel sheet to obtain the steel sheet thickness (Hrc) after the width of the width of the steel sheet is rolled.

Description

후강판이 폭제어방법Thick steel plate width control method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명과 종래방법에 따라 후강판의 판폭을 제어한 일례의 경우에 대한 판폭 편차를 나타내는 그래프.1 is a graph showing the plate width deviation for the example of controlling the plate width of the thick steel sheet according to the present invention and the conventional method.

Claims (2)

강슬라브를 가열로에서 가열한후 조압연기로 이송시킨 다음 조압연기에서 폭내 기압연을 행하여 후강판의 폭을 제어하는 방법에 있어서, 폭내기 압연후의 후강판의 목표폭(Wr)을 설정하는 단계; 상기 가열로에서 가열하기전에 강 슬라브의 중량(WEo)을 측정하고, 이 중량(WEo)이 기준중량범위를 벗어나는지 여부를 판단하는 단계; 그 중량이 기준중량범위를 벗어나지 않는 강슬라브에 대하여 상기 조압연기에서 압연하기전에 강슬라브의 폭(Wo)과 길이(Lo)를 측정하는 단계: 상기와 같이 측정된 강 슬라브의 중량(WEo), 폭(Wo)및 길이(Lo) 값을 이용하여 하기 식과 같이 환산두께(Hoc)를 구하는 단계;A method of controlling the width of a thick steel plate by heating the steel slab in a heating furnace and transferring the steel slab to a rough rolling mill and then performing in-width air rolling in the rough rolling mill, the method comprising: setting a target width (Wr) of the thick steel sheet after the width reduction rolling ; Measuring the weight WEo of the steel slab before heating in the furnace, and determining whether the weight WEo is outside the reference weight range; Measuring the width (Wo) and the length (Lo) of the steel slab before rolling in the rough mill for the steel slab whose weight does not deviate from the reference weight range: the weight (WEo) of the steel slab measured as described above, Obtaining a conversion thickness (Hoc) using a width (Wo) and a length (Lo) value as in the following equation; 상기와 같이 측정된 강 슬라브의 폭(Wo), 환산두께(Hoc) 및 목표폭(Wr)을 이용하여 하기식에 의해 폭내기 압연후의 강판두께(Hrc)를 구하는 단계; 및Obtaining a steel sheet thickness (Hrc) after the bake rolling by the following formula using the width (Wo), the converted thickness (Hoc) and the target width (Wr) of the steel slab measured as described above; And 상기와 같이 구한 폭내기압연후의 강판두께(Hrc)가 얻어지도록 폭내기 압연조건을 제어하여 폭내기 압연하는 단계를 포함하여 구성되는 후강판의 폭제어방법.A width control method for a thick steel sheet, comprising the step of controlling the width of the width of the rolling process to obtain the steel sheet thickness (Hrc) after the width of the width after the rolling process obtained. 제1항에 있어서, 강슬라브의 비중(ρ)이 7.40-8.5(g/㎤)인 것을 특징으로하는 후강판의 폭 제어방법.The width control method of a thick steel sheet according to claim 1, wherein the specific gravity (rho) of the steel slab is 7.40 to 8.5 (g / cm 3). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950049560A 1995-12-14 1995-12-14 Width control method of steel plate KR100236165B1 (en)

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Application Number Priority Date Filing Date Title
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KR100236165B1 KR100236165B1 (en) 1999-12-15

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970033129A (en) * 1995-12-29 1997-07-22 김종진 Rolling method of thick steel sheet
KR20010053712A (en) * 1999-12-01 2001-07-02 이구택 Method For Manufacturing Steel Plate
KR100406407B1 (en) * 1999-09-09 2003-11-19 주식회사 포스코 A Method for Manufacturing Steel Plate with Superior Width Accuracy
KR100419623B1 (en) * 1999-11-08 2004-02-25 주식회사 포스코 A Method For Controlling Width Of Steel Plate
KR100423424B1 (en) * 1999-12-01 2004-03-19 주식회사 포스코 Method For Widthwide Rolling Steel Plate
KR101148944B1 (en) * 2009-06-26 2012-05-22 현대제철 주식회사 Method for checking suitability of products using slab

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101204838B1 (en) 2010-06-29 2012-11-26 현대제철 주식회사 Method for measuring size of slab
KR101322048B1 (en) 2011-09-28 2013-10-28 주식회사 포스코 Method for controlling width of rolling material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970033129A (en) * 1995-12-29 1997-07-22 김종진 Rolling method of thick steel sheet
KR100406407B1 (en) * 1999-09-09 2003-11-19 주식회사 포스코 A Method for Manufacturing Steel Plate with Superior Width Accuracy
KR100419623B1 (en) * 1999-11-08 2004-02-25 주식회사 포스코 A Method For Controlling Width Of Steel Plate
KR20010053712A (en) * 1999-12-01 2001-07-02 이구택 Method For Manufacturing Steel Plate
KR100423424B1 (en) * 1999-12-01 2004-03-19 주식회사 포스코 Method For Widthwide Rolling Steel Plate
KR101148944B1 (en) * 2009-06-26 2012-05-22 현대제철 주식회사 Method for checking suitability of products using slab

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Publication number Publication date
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