WO2015060124A1 - Procédé de réglage et dispositif de réglage pour dispositif de presse de calibrage - Google Patents

Procédé de réglage et dispositif de réglage pour dispositif de presse de calibrage Download PDF

Info

Publication number
WO2015060124A1
WO2015060124A1 PCT/JP2014/076800 JP2014076800W WO2015060124A1 WO 2015060124 A1 WO2015060124 A1 WO 2015060124A1 JP 2014076800 W JP2014076800 W JP 2014076800W WO 2015060124 A1 WO2015060124 A1 WO 2015060124A1
Authority
WO
WIPO (PCT)
Prior art keywords
slabs
mold
sizing press
slab
molds
Prior art date
Application number
PCT/JP2014/076800
Other languages
English (en)
Japanese (ja)
Inventor
由忠 喜多
Original Assignee
Ｊｆｅスチール株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Publication of WO2015060124A1 publication Critical patent/WO2015060124A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/04—Shaping in the rough solely by forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations

Definitions

  • the present invention relates to a control method and a control device for a sizing press device that performs a width reduction process on a hot slab.
  • the inventor of the present invention has carried out a slab width reduction process by alternately using a plurality of upper and lower molds for each slab. It has been found that heat cracks due to thermal stress occur in the mold due to repeated temperature reduction due to treatment. When heat cracks occur in the mold, the quality of the slab may be deteriorated due to chipping of the mold. For this reason, provision of the technique which can suppress that the heat crack by a thermal stress generate
  • the present invention has been made to solve the above-described problems, and controls a sizing press device capable of suppressing the occurrence of heat cracks due to thermal stress in a mold used when a slab is subjected to width reduction processing. It is an object to provide a method and a control device.
  • a control method for a sizing press apparatus includes a pair of molds arranged in a plurality of upper and lower stages and capable of shifting in a direction perpendicular to a slab conveying direction.
  • a sizing press device for switching a die for performing width reduction processing of a slab between an upper die and a lower die for each predetermined number of slabs and cooling a die not subjected to width reduction processing
  • the predetermined number of slabs is defined as a lower limit value of the number of slabs that are continuously subjected to width reduction with one mold in which the frequency of heat cycles applied to the mold per unit time is equal to or greater than a predetermined value.
  • the control method for a sizing press apparatus includes the step of determining the predetermined number of slabs based on an upper limit value of the predetermined number of slabs determined from facility restrictions of the sizing press apparatus in the above invention.
  • a control device for a sizing press apparatus includes a pair of molds arranged in a plurality of upper and lower stages and capable of shifting in a direction perpendicular to the slab conveying direction.
  • a sizing press device for switching a die for performing width reduction processing of a slab between an upper die and a lower die for each predetermined number of slabs and cooling a die not subjected to width reduction processing
  • the predetermined number of slabs which is a control device, wherein the number of slabs that are continuously subjected to width reduction processing in one mold in which the frequency of thermal cycles applied to the mold per unit time is equal to or higher than a predetermined value is set as a lower limit value. It is characterized by providing the means to determine.
  • control method and the control device of the sizing press apparatus it is possible to suppress the occurrence of heat cracks due to thermal stress in the mold used when the slab is subjected to width reduction processing.
  • FIG. 1 is a schematic diagram showing a configuration of a hot rolling line to which a control method for a sizing press apparatus according to an embodiment of the present invention is applied.
  • FIG. 2A is a schematic diagram illustrating a configuration of the sizing press apparatus illustrated in FIG. 1.
  • FIG. 2B is a schematic diagram showing the movement of the sizing press device when the slab is subjected to width reduction using the upper mold.
  • FIG. 2C is a schematic diagram showing the movement of the sizing press apparatus when the slab is subjected to width reduction using the lower mold.
  • FIG. 3A is a diagram showing a thermal cycle applied to the mold when the mold for performing the width reduction processing is switched for every two slabs.
  • FIG. 3B is a diagram showing a thermal cycle applied to the mold when the mold for performing the width reduction processing is switched for every 500 slabs.
  • FIG. 1 is a schematic diagram showing a configuration of a hot rolling line to which a control method of a sizing press apparatus according to an embodiment of the present invention is applied.
  • a hot rolling line to which a control method for a sizing press apparatus according to an embodiment of the present invention is applied first, a slab having a thickness of about 250 mm is heated in a heating furnace 1 at 1100 to 1250 ° C. After being heated to a certain temperature, the sizing press apparatus 2 performs a width reduction process. Next, the slab processed by the width reduction by the sizing press apparatus 2 is formed into a sheet bar through a rough rolling process.
  • the rough rolling process is performed by a reverse rolling mill 4a that performs rolling of a plurality of passes and a one-directional rolling mill 4b that performs rolling of one pass in the traveling direction.
  • Edger rolls 3a and 3b are provided before and after the reverse rolling mill 4a, and an edger roll 3c is provided in front of the unidirectional rolling mill 4b, and a predetermined amount of width reduction processing is performed immediately before each horizontal rolling pass.
  • the sheet bar formed in the rough rolling process is cut and removed at the tip portion by the crop shear 5, and then is rolled down to a predetermined finishing thickness by the finishing mill group 6 and wound by the coiler 7. Taken. Further, during finish rolling, at the timing when the rear end portion of the sheet bar reaches the position of the crop shear 5, the crop portion at the rear end is cut and removed by the crop shear 5.
  • FIG. 2A is a schematic diagram showing a configuration of the sizing press apparatus 2 shown in FIG.
  • the sizing press device 2 includes a pair of upper molds 21A and 21B facing the end portions in the plate width direction of the slab, and a pair of lower molds 21A and 21B disposed below the pair of upper molds 21A and 21B.
  • upper mold cooling mechanisms 24A and 24B for cooling the upper molds 21A and 21B by spraying cooling water onto the upper molds 21A and 21B are disposed on the frames 23A and 23B.
  • lower mold cooling mechanisms 25A and 25B for cooling the lower molds 22A and 22B by injecting cooling water onto the lower molds 22A and 22B are provided on the roll support portion RS that supports the roll R that transports the slab. It is arranged.
  • the upper molds 21A and 21B are placed in the direction of the slab S using a shift cylinder (not shown).
  • the slab S is subjected to width reduction using the upper molds 21A and 21B.
  • the lower mold cooling mechanisms 25A and 25B cool the lower molds 22A and 22B by injecting the cooling water 26 onto the lower molds 22A and 22B.
  • the upper molds 21A and 21B are moved to the positions shown in FIG. 2A using a shift cylinder (not shown).
  • the lower molds 22A and 22B are shifted in the direction of the slab S (direction of arrow D) using a shift cylinder (not shown) to use the lower molds 22A and 22B. Is subjected to width reduction.
  • the upper mold cooling mechanisms 24A and 24B cool the upper molds 21A and 21B by injecting the cooling water 26 onto the upper molds 21A and 21B.
  • the width reduction processing using the upper molds 21A and 21B is executed first, but the width reduction processing using the lower molds 22A and 22B may be executed first.
  • the inventor of the present invention As a result of intensive research, the inventor of the present invention, as shown in FIG. 3A, the upper molds 21A and 21B and the lower molds 22A and 22B shown in FIG.
  • the upper die 21A is repeated by repeating the temperature increase due to the contact of the slab S and the temperature decrease due to the cooling process.
  • 21B and lower molds 22A, 22B were found to generate heat cracks due to thermal stress. That is, when the upper dies 21A and 21B and the lower dies 22A and 22B are switched for every small number of slabs 1, 2 or the like and the slab S is subjected to width reduction processing, the upper dies 21A and 21B per unit time.
  • the frequency of the heat cycle applied to the lower molds 22A and 22B becomes a predetermined value or more, heat cracks due to thermal stress occur in the upper molds 21A and 21B and the lower molds 22A and 22B.
  • the frequency of the heat cycle applied to the upper molds 21A and 21B and the lower molds 22A and 22B per unit time is predetermined.
  • the number of slabs to be subjected to width reduction processing is determined by setting the number of slabs to be subjected to width reduction processing continuously with one die that is equal to or greater than the value as a lower limit value. In this way, by determining the number of slabs for switching the die for performing the width reduction processing based on the frequency of the thermal cycle applied to the die per unit time, as shown in FIG.
  • the frequency of the applied heat cycle becomes less than a predetermined value (the example shown in FIG. 3A is every 500 slabs), and heat cracks due to thermal stress can be prevented from occurring in the upper molds 21A and 21B and the lower molds 22A and 22B. .
  • the number of slabs is greater than the number of slabs that are continuously subjected to width reduction with a single mold in which the frequency of thermal cycles applied to the mold per unit time is equal to or greater than a predetermined value, thermal stress is applied to the mold.
  • the occurrence of heat cracks due to can be suppressed.
  • peripheral equipment will be adversely affected, such as a shift cylinder malfunctioning due to a decrease in the operating frequency of the shift cylinder. .
  • the number of slabs that are continuously subjected to the width reduction with one mold may be a fixed value, or the temperature of the upper molds 21A, 21B and the lower molds 22A, 22B is measured online. It may be changed based on the temperature.
  • the present invention it is possible to provide a control method and a control device for a sizing press apparatus capable of suppressing the occurrence of heat cracks due to thermal stress in a mold used when a slab is subjected to width reduction processing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Forging (AREA)

Abstract

L'invention porte sur un procédé de réglage pour un dispositif de presse de calibrage (2), qui est doté d'une paire de moules qui sont disposées sur une pluralité d'étages verticaux et qui peuvent se déplacer dans une direction perpendiculaire à une direction de transport pour des brames, des matrices qui effectuent un traitement de laminage en largeur sur une brame entre les matrices d'étage supérieur (21A, 21B) et les matrices d'étage inférieur (22A, 22B) étant remplacées au niveau de chacune d'un nombre prescrit de brames et les matrices étant refroidies sans la mise en œuvre d'un traitement de laminage en largeur, et qui comprend une étape consistant à déterminer le nombre prescrit de brames avec le nombre de brames pour lesquelles un traitement de laminage en largeur est effectué en continu par une matrice de façon à ce qu'une fréquence de cycle de traitement thermique appliquée à la matrice par unité de temps soit à une valeur prescrite ou supérieure à une valeur limite inférieure.
PCT/JP2014/076800 2013-10-22 2014-10-07 Procédé de réglage et dispositif de réglage pour dispositif de presse de calibrage WO2015060124A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013218920A JP2015080791A (ja) 2013-10-22 2013-10-22 サイジングプレス装置の制御方法及び制御装置
JP2013-218920 2013-10-22

Publications (1)

Publication Number Publication Date
WO2015060124A1 true WO2015060124A1 (fr) 2015-04-30

Family

ID=52992726

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/076800 WO2015060124A1 (fr) 2013-10-22 2014-10-07 Procédé de réglage et dispositif de réglage pour dispositif de presse de calibrage

Country Status (3)

Country Link
JP (1) JP2015080791A (fr)
TW (1) TW201532694A (fr)
WO (1) WO2015060124A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62282738A (ja) * 1986-05-30 1987-12-08 Kawasaki Steel Corp 熱間スラブの幅圧下方法及び幅圧下プレス装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07113735A (ja) * 1993-10-19 1995-05-02 Hitachi Metals Ltd ヒートクラック発生型高温摩耗試験方法及び同試験装置
JP3201712B2 (ja) * 1995-08-28 2001-08-27 松下電工株式会社 コンピュータシミュレーションによる成形金型の温度調整配管仕様決定方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62282738A (ja) * 1986-05-30 1987-12-08 Kawasaki Steel Corp 熱間スラブの幅圧下方法及び幅圧下プレス装置

Also Published As

Publication number Publication date
JP2015080791A (ja) 2015-04-27
TW201532694A (zh) 2015-09-01

Similar Documents

Publication Publication Date Title
KR101609174B1 (ko) 열연 규소강 생산방법
JP2014521517A (ja) 熱間圧延中間スラブの頭部および尾部の切断量を減少させるための、連続鋳造スラブの頭部および尾部の形状を予め制御する方法
RU2646514C2 (ru) Установка для прокатки, установка и способ непрерывного литья и прокатки
RU2211100C2 (ru) Способ раскатки горячекатаной широкой ленты из полученных непрерывной разливкой плоских слитков и устройство для его осуществления
KR20110128917A (ko) 슬래브 연속 주조 방법 및 장치
TWI615210B (zh) 根據ｃｓｐ－槪念的設備以及用於操作此種設備的方法
JP6580165B2 (ja) 連続鋳造圧延装置及び連続鋳造圧延方法
CN103667881A (zh) 高磁感取向硅钢的生产方法
CN108136458B (zh) 无头轧制设备和方法
US20120174645A1 (en) Cooling apparatus and cooling method for hot rolling
WO2015060124A1 (fr) Procédé de réglage et dispositif de réglage pour dispositif de presse de calibrage
KR101308785B1 (ko) 압연기 워크롤의 단속적 냉각 방법 및 장치
JP2011200878A (ja) 棒鋼の圧延方法
JP2009028747A (ja) 厚鋼板の圧延方法
JP4720250B2 (ja) 鋼材の制御圧延方法
JP2011143462A (ja) 厚鋼板の製造方法
CN104190711A (zh) 一种纯铜板生产工艺
KR101024587B1 (ko) 열간압연설비
KR101433463B1 (ko) 열간압연 강판의 선단부 휨 방지 장치 및 방법
KR101990987B1 (ko) 두께와 폭을 동시에 압연하는 압연장치
JP4609596B2 (ja) 厚鋼板の製造方法及び厚鋼板のリバース圧延機
JP2008212956A (ja) 熱間圧延における脱スケール装置の使用方法およびそれを用いた熱間圧延方法
JP2010520957A (ja) 金属板を処理する方法
JP2008114230A (ja) 熱間圧延における被圧延材の温度制御方法、及び、それを用いた熱間圧延方法
KR101786388B1 (ko) 등방성이 우수한 강판 제조장치 및 이에 의해 생산된 강판

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14855884

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14855884

Country of ref document: EP

Kind code of ref document: A1