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WO2006102835A1 - Procede de coulage et de laminage en continu d’une tole moyenne - Google Patents

Procede de coulage et de laminage en continu d’une tole moyenne Download PDF

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Publication number
WO2006102835A1
WO2006102835A1 PCT/CN2006/000518 CN2006000518W WO2006102835A1 WO 2006102835 A1 WO2006102835 A1 WO 2006102835A1 CN 2006000518 W CN2006000518 W CN 2006000518W WO 2006102835 A1 WO2006102835 A1 WO 2006102835A1
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WO
WIPO (PCT)
Prior art keywords
rolling
continuous casting
roller
billet
confluence
Prior art date
Application number
PCT/CN2006/000518
Other languages
English (en)
Chinese (zh)
Inventor
Jie Liu
Hao Dong Huang
Long Zhen Li
Xu Yang
Leng Zhang
Yong Gang Ma
Xiao Chun Sha
Yi Kang Sun
Ming Ren Wang
Jie Fu Na
Heng Lu Zhang
Fu Xing Jin
Original Assignee
Angang Steel Company Limited
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 Angang Steel Company Limited filed Critical Angang Steel Company Limited
Priority to EP06722170A priority Critical patent/EP1870172B1/fr
Priority to AT06722170T priority patent/ATE515334T1/de
Priority to AU2006228889A priority patent/AU2006228889B2/en
Publication of WO2006102835A1 publication Critical patent/WO2006102835A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B21B1/463—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 metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • 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
    • B21B37/46—Roll speed or drive motor control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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

Definitions

  • the invention belongs to the technical field of metallurgical metal processing, and particularly relates to a production process of a medium-thickness slab continuous casting and rolling coil.
  • the continuous hot strip production process technology is mainly divided into traditional production process and CSP production process;
  • the traditional production process is continuous casting 200mn! ⁇ 250mm thick slab, flame cutting, stepping furnace heating, descaling, roughing mill rolling, shearing, descaling, finishing mill rolling, laminar cooling, coiling rolls, all varieties,
  • the advantages of high output, flexible production organization and large product compression ratio are the main disadvantages of large casting machine equipment, long rolling line, high building height, large land occupation, large equipment investment, large slab warehouse and high energy consumption.
  • CSP production process is continuous casting 50 legs ⁇ 70mm thin slab, flame cutting, tunnel heating furnace heating, descaling, finishing rolling, laminar cooling, coiling rolls, with small investment, low production cost, omission of rough rolling
  • the main disadvantages of the unit, strengthening the finishing train and strong rolling capacity are the high continuous casting speed, high steel leakage rate, many varieties and restrictions, new product development difficulty, large investment in tunnel heating furnace, complicated equipment and operation. It is difficult to maintain, the production organization is rigid, the accident handling loss is large, and the output is low.
  • the applicant discloses a production of medium and thin slab continuous casting and rolling coil in 02132970.
  • ASP production process this process is converted into steel by converter, continuous casting 100 awake ⁇ 150 awake thick slab, flame cutting, step heating furnace heating, descaling, roughing unit 3 3 + 1 rolling , hot coil box, shearing, descaling, finishing mill rolling, laminar cooling, coiling rolls.
  • the advantages of this process are low cost, low investment, flexible production organization, simple maintenance, and low accident rate.
  • the disadvantage is that the production line uses more old equipment, the power of the finishing rolling motor is small, the roller speed is low, the water supply capacity is insufficient, and the rolling mill drive System strength is thin, power supply system configuration
  • the invention is directed to the deficiencies of the above various coil production processes, and the object of the invention is to improve the key technologies to save energy, not only improve the slab heating quality, but also improve the plate thickness uniformity and the board.
  • the shape quality and the high width precision improve the operation rate and output of the rolling mill, and the production process of the medium-thickness slab continuous casting and rolling coil meets the needs of modern production.
  • the production process of the invention basically adopts the process flow of ZL02132970. 2, on the basis of which, the process is improved, the invention is improved in the production capacity, the range of the production variety is expanded, and at the same time, the shape control, New breakthroughs have been made in the fields of width precision control and surface quality control, and the present invention can also realize direct rolling of a part of steel grades.
  • the technical solution of the present invention is as follows:
  • the production process of the medium-thickness slab continuous casting and rolling coil comprises the following steps:
  • Continuous casting molten steel passes through the crystallizer, using hydraulic vibration, continuous bending, continuous straightening, casting section thickness 100 awake ⁇ 170 let, width 900 ⁇ 2000 to let the slab;
  • Straight rolling, hot charging and hot loading adopting double-machine four-flow and four-in-one technology, each one of the two continuous casting machines is connected with the furnace and the rolling roller of the heating furnace to realize the continuous casting blank.
  • the rapid hot-feeding hot-packing or direct rolling the continuous casting billet is directly sent to the heating furnace through the transport roller, and the continuous casting billet is sent to the step-type heating furnace by the long-stroke loading machine of the heating furnace.
  • the blanking roller of the continuous casting machine is connected with the inlet roller of the hot rolling furnace, and the continuous casting blank is directly sent to the heating furnace by the roller conveyor, and the hot charging temperature is not lower than 700 ° C, the continuous casting machine a blanking roller is connected to the tapping roller of the hot rolling furnace;
  • Rough rolling ⁇ Used a roughing mill with a front and rear vertical roll device, the maximum single pass pressure of the vertical roll is 50 legs, the maximum rolling pressure is 3800 kN, the rolling speed is 0 ⁇ 5. 89 m/s, each pass during rolling Entrance vertical roller input, exit The vertical roller is opened, and is automatically controlled by a computer, and the hydraulic brake width control (AWC) is set to realize automatic width control;
  • AWC hydraulic brake width control
  • Finish rolling F1 is equipped with a vertical roller device. When the intermediate blank is 50mm thick, the maximum reduction is 10mm, and the maximum rolling pressure is 1000kN.
  • the F1 ⁇ F7 finishing mills all use the work roll axial yaw and bending device.
  • the maximum stroke of the roller is ⁇ 200 ⁇ , and the bending roller force is up to 1500kN, which makes the cross-section thickness difference of the strip steel and the control ability of the steel strip shape enhanced, and realizes free rolling.
  • the finishing mill adopts speed-up rolling, and the maximum speed can reach 22. 8m / s, the maximum roller speed before finishing rolling can reach 5. 89m / s, there is a side heater in front of the finishing mill;
  • Laminar cooling Three-stage laminar cooling control technology is adopted, and a coarse and fine regulating valve group is set, and an online high-level water tank is provided, so that the water volume and water pressure of each cooling section are stable, and the side water spray pressure is lMpa ⁇ l. 2 Mpa guarantee The longitudinal temperature of the strip is uniform;
  • Reeling Full hydraulic reeling machine with step control, using hydraulically controlled side guides, pinch rolls, roll-rolling retracting reel and high-response speed roll automatic skip control for precise strip Centering, micro tension winding, reducing the tower shape, while avoiding the impact of the head on the roll, eliminating the indentation of the strip head and the roll to the strip.
  • the output roller of the rough rolling step is provided with a heat insulating cover to reduce the temperature drop of the casting blank and the temperature difference between the head and the tail of the intermediate strip, and the temperature of the finishing mill is increased by 30 ° C. 50 C, the temperature difference between the head and the tail is reduced by 30 ° C ⁇ 5 (TC.
  • the roughing mill with the front and rear vertical roller device is in the form of a vertical roller attached, the roll size is ⁇ 1200 / ⁇ 1100 leg X 430 Gu , the main motor power AC1200kWX 2 X
  • the vertical rolling step of the finishing rolling step is provided with a vertical roller device, and the vertical roller is in the form of an upper transmission auxiliary vertical roller, the roller size is ⁇ 750 mm / ⁇ 600 surface X 350 wakes up, the main drive motor 2 - AC 370 kWX 550 r / min.
  • the hydraulic rolling low inertia looper is used between the finishing mill stands of the finishing rolling step to facilitate controlling the tension between the finishing mills and improving the quality of the strip.
  • the cooling device of the laminar cooling step is set up with 12 sets of online high water tanks, the water volume is 1700 mVh, the pressure is 0. 05Mpa ⁇ 0 . 08Mpa o
  • the structure of the crystallizer is: a slab continuous casting mold with four corners of the inner cavity at right angles or rounded or straight oblique angles, and the right angle crystallizer structure is a conventional slab crystallizer, that is, a wide and narrow surface angle a mold with a wide angled right side wall and two narrow side walls; a round or straight bevel slab continuous casting mold consisting of two wide side walls and two narrow side walls, in each piece
  • the two sides of the narrow side wall that is, the inner side of the connecting end of the wide side wall, each have a row of right-angled triangular-shaped convex edges, the triangular-shaped convex edges are inclined inward, and one right-angled surface is combined with the inner surface of the narrow side wall, and
  • One of the right angle faces is on the same plane as the side of the narrow side wall, that is, the side of the narrow side wall extends.
  • the four-in-one technology controls the billet by three times: that is, the control of the flow time, the control of the billet through the bottleneck of the flow, and the timing of the billet tapping, and the buffering capacity, the heating capacity and the rolling capacity are compared.
  • the billet is controlled by the flow bottleneck: Determine the flow of the 1 stream billet I s car; determine the 4 stream billet loading 3 s car time; determine the 1 and 2 stream billet confluence and install the 2 # car moment; determine the blank of the 1 # furnace Roller time; determine the moment when the billet enters the furnace; the billet confluence time follows the principle of "Who first goes to the confluence point, who goes first, at the same time, goes straight, goes straight"principle;
  • Control of tapping time Calculate the stacking value of the billet at each key point, and check the buffer capacity, heating capacity and rolling line capacity of the furnace to determine the value of each state billet at each key point.
  • the semi-rigid connection of the machine-heating furnace-rolling line, the billet convergence moment follows the principle of "Who first goes to the confluence point, who goes first, at the same time, goes straight, goes straight".
  • the invention has the following advantages:
  • the corner cooling during the solidification of the molten steel in the crystallizer to form the shell is adjusted by two-dimensional cooling to nearly one-dimensional cooling, so that the solidification of the shell is relatively uniform, thus avoiding the cooling and solidification of the slab corner.
  • the long-stroke steel loading machine is used to make the heating furnace have the function of heating the slab. At the same time, it has the buffering effect of continuous casting production and rolling rhythm. When the rolling mill is temporarily stopped for a short time, it can store up to 9 buffer slabs. Without affecting continuous casting production.
  • the finishing mill adopts the axial roll and bending device of the work roll to control the cross-section thickness difference (convexness and wedge shape) of the strip and the straightness of the strip. It can also achieve free rolling and improve Rolling mill operating rate, the production line uses hydraulic low inertia looper to help control the tension between the finishing mills, improve the quality of the strip, ⁇
  • the finishing mill adopts the speed-up rolling, shortening the roller conveyor time, reducing the temperature drop, and improving the Thickness uniformity and shape quality, which increase the operating rate and output of the rolling mill;
  • edge heaters is beneficial to improve the temperature uniformity of the strip, reduce edge cracks, improve the edge structure, and facilitate the stable operation of the finishing mill.
  • Three-stage laminar cooling control technology is adopted, and multi-stage coarse and fine adjustment valve sets are set to stabilize the water volume and water pressure of each cooling section, ensuring uniform longitudinal temperature of the strip steel, thereby ensuring uniformity of the steel plate and overcoming the original life. Product quality problems caused by insufficient water supply capacity.
  • the production process of the medium and thin slab continuous casting and rolling coils is improved from layout, equipment and production process, so that the production capacity, variety development and product quality are improved, and the production capacity reaches an annual output of 5 million tons, and the width precision is obtained.
  • LOram ratio reached 98.5 %
  • the shape control and crown control adjustment ability reached the international advanced level
  • the surface quality control ability was 100%
  • the thin specification ratio reached the international advanced level. Level.
  • the invention is applied to the production process of 2150 medium-thick slab continuous casting and rolling coil:
  • the molten steel passes through three 250t top-bottom composite blowing converters, two hot-water desulphurization slag stations, two LF ladle refining furnaces, and one RH-TB vacuum processing unit.
  • the molten steel can pass LF ladle refining furnace or RH-TB steel before pouring.
  • the vacuum processing device performs refining treatment;
  • Continuous casting molten steel passes through the crystallizer, using hydraulic vibration, continuous bending, continuous straightening, casting section thickness 100 awake ⁇ 170 legs, width 900 ⁇ 2000 legs, length 11 ⁇ ! ⁇ 18m continuous casting billet, flame cutting, slab maximum single weight 38 tons, average continuous casting furnace number 30 furnace, average pouring time 37. 3 min / furnace, due to the use of crystallizer hydraulic vibration technology, improve the quality of the casting blank, Ensure that the surface of the slab is free of defects;
  • the present invention applies a straight rolling technique to a part of carbon steel and some low-alloy steels
  • the blanking roller of the continuous casting machine is connected with the inlet roller of the hot rolling furnace, and the continuous casting blank is
  • the roller conveyor is directly sent to the heating furnace for hot charging, and the hot charging temperature is not less than 700 C on average.
  • One of the blanking rollers of the continuous casting machine is connected with the tapping roller of the hot rolling furnace, and the slab is automatically connected to the roller table.
  • Measurement The long and pyrometers measure the temperature so that the slab can be accurately centered and heated according to the cloth pattern.
  • the computer optimizes the heating of the slab according to the temperature of the slab.
  • the slab is heated in the heating furnace to 1150 ° C ⁇ 1250 ° C, and the furnace is taken out of the furnace by the furnace, and placed on the exit roller path, which not only saves energy, but also has short heating time, improves the heating quality of the slab, and partially carbonizes.
  • Steel and certain alloy steels (such as silicon steel) can be rolled at "low temperature" to achieve rolling of different varieties.
  • the long-stroke loader is used to make the furnace have the function of heating the slab. At the same time, it has the buffering effect that the continuous casting production and the rolling rhythm are not coordinated. When the rolling mill is temporarily stopped for a short time, it can store up to 9 buffer slabs. Does not affect continuous casting production.
  • the billet is controlled by the flow bottleneck: Determine the 1 stream billet loading 1 # ⁇ ; Determine the 4 stream billet loading 3 # ⁇ moment; Determine the 1 and 2 stream billet confluence and install the 2 # cart moment; Determine the 1 # furnace billet leaving the roller The time of the road; determine the moment when the billet enters the furnace; the billet convergence time follows the principle of "Who first goes to the confluence point, who goes first, at the same time, goes straight, goes straight"principle;
  • Time control of tapping calculation of the value of the billet at each key point, and furnace buffer Ability, heating capacity, rolling line capacity check, determine the value of each state of the billet at each key point, realize the semi-rigid connection of the caster-heating furnace-rolling line, and the billet convergence time follows "Who first arrives at the confluence Point, who will go first, at the same time, go straight and go first" principle.
  • Rough rolling The heated slab or the directly rolled slab is transported by a roller conveyor. First, the iron oxide scale is removed by a high-pressure water descaling tank after the furnace, and the slab is rolled into a four-roll reversible roughing mill.
  • the four-roll reversible roughing mill is equipped with front and rear vertical rollers in the form of attached upper drive type. Roll size ⁇ 1200/ ⁇ 1100 ⁇ ⁇ 430 ⁇ , single pass maximum single pass side pressure 50mm, maximum rolling pressure 3800kN, rolling speed 0 ⁇ 5.
  • the vertical roller of each entrance is rolled during rolling, the outlet vertical roller is opened, it is automatically controlled by computer, and hydraulic AWC is set to realize automatic width control.
  • the front vertical roll is oddly rolled, the rear vertical roll is evenly rolled, and the maximum side pressure of the pass is 50 mm.
  • the slab is rolled 3 to 5 times on a four-roll reversible roughing mill, and then rolled into an intermediate strip of 30 to 60 mm thick. In the four-roll reversible roughing mill rolling, the slab is used to remove the scale from the high-pressure water before and after the four-roll reversible roughing mill.
  • the four-roller reversing roughing mill has an automatic width control system AWC for the front and rear vertical rolls. The purpose is mainly to correct the error caused by the variation of the rolling force, the width caused by the slab width, and the difference in the width of the end of the slab head.
  • a four-roll reversible roughing mill is equipped with a width gauge and a pyrometer to monitor the strip width and temperature, and to provide correction data for the finishing mill setting.
  • the four-roll reversible roughing mill is equipped with a dust removal device.
  • a heat preservation cover is arranged on the output roller, and the intermediate strip is sent to the cutting head and the tail by the heat preservation cover, and the strip is provided before the cutting head is cut.
  • the head shape detector reduces the temperature drop of the intermediate strip and the temperature difference between the head and the tail.
  • the temperature of the finishing mill is increased by 30 ° C to 50 ° C, and the temperature difference between the head and the tail is reduced by 30 ° C to 50 ° C to achieve the best flying shear. Shearing to reduce head loss and increase yield.
  • the parameters of the device are 2 x 3000KW for the main motor and 40mii for the heating depth! ⁇ 60 paintings, heating width 100 mm ⁇ 150 legs, temperature rise 60 ° C ⁇ 100 ° (:, is conducive to improve the strip The temperature is uniform, the edge crack is reduced, and the mixed crystal defects of the edge structure are improved, which is beneficial to the stable operation of the finishing mill and also meets the needs of development and production of duplex steel products.
  • Fine emulsion The billet is rolled by the small vertical roll device before the finishing mill F1.
  • the maximum reduction is 10 legs
  • the maximum rolling pressure is 1000kN
  • the main drive motor 2 AC 370 kWX 550 r/min , then sent to the finishing train.
  • the strip is passed through the F1 ⁇ F7 four-roll finishing mill and rolled into 1. 8 im! ⁇ 25. 1 ⁇ 2m finished strip.
  • the F1 ⁇ F7 finishing mills all adopt the axial roll and bending device of the work roll.
  • the roll stroke is up to 200 awake and the bending roll force is 1500kN.
  • F3 ⁇ F6 has the work roll axial yaw and bending roll
  • the device, the bending force is only positively curved and has no negative bending. It not only controls the cross-section thickness difference (convexness and wedge shape) of the strip but also the straightness of the strip steel, and can also realize free rolling and increase the rolling mill operating rate.
  • the production line adopts hydraulic low inertia looper to help control the tension between the finishing mills and improve the quality of the strip.
  • Laminar cooling Three-stage laminar cooling control technology is used to set up a coarse and fine-regulating valve group, and there are 12 sets of online high-level water tanks, so that the water volume and water pressure of each cooling section are stable, the water volume is 1700m7h, and the pressure is 0. 05 M P a ⁇ 0. 08Mpa, side spray water pressure lMpa ⁇ l. 2Mpa to ensure that the longitudinal temperature of the strip is uniform;
  • This full-hydraulic coiler coil with step control uses hydraulically controlled side guides, pinch rolls, roll-up and roll-up rolls, and high-response roll-feed automatic skip control.
  • the strip is precisely centered and micro-tensioned to reduce the tower shape, while avoiding the impact of the head on the roll, eliminating the indentation of the strip head and the roll to the strip.
  • the automation system of this production line is a three-level computer control system, the first level is the basic automation system, the second is the extreme process control computer system, and the third level is the production control computer system.

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

Abstract

Le procédé de coulage et de laminage en continu d’une bande moyenne à chaud selon l’invention comprend les étapes suivantes : coulage en continu, au cours du passage d’acier fondu dans des lingotières, pour former des ébauches de coulée d’une épaisseur de section comprise entre 100 et 170 mm et d’une largeur comprise entre 900 et 2000 mm par oscillation hydraulique, cintrage et dressage continus ; laminage direct, distribution et chargement à chaud des ébauches de coulée par une machine à double fonction à quatre courants, ces quatre courants constituant une technique, réalisant une distribution et un chargement à chaud rapides ou un laminage direct d’ébauches de coulée en continu ; dégrossissage à l’aide d’une fraise d’ébauche équipée de cylindres verticaux avant et arrière ; finissage par laminage à vitesse croissante à l’aide d’un train finisseur dont chaque montant est équipé d’un dispositif pour le déplacement axial et de cylindres de cintrage, dont la vitesse maximale est de 22,8 m/s et la vitesse du train de rouleaux peut augmenter jusqu’à 5,89 m/s ; refroidissement du courant à l’aide d’une technique de commande de refroidissement du courant en trois étapes ; bobinage à l’aide d’une bobineuse totalement hydraulique commandée selon une technique de commande pas à pas. L’invention a apporté des améliorations concernant l’implantation, l’appareil, la méthode de fabrication, etc., ce qui a permis d’améliorer la capacité de production, le développement de différents types de produits, la qualité des produits et l’organisation de la production.
PCT/CN2006/000518 2005-03-28 2006-03-27 Procede de coulage et de laminage en continu d’une tole moyenne WO2006102835A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06722170A EP1870172B1 (fr) 2005-03-28 2006-03-27 Procede de coulage et de laminage en continu d'une tole moyenne
AT06722170T ATE515334T1 (de) 2005-03-28 2006-03-27 Strangguss- und walzverfahren für mediumplatte
AU2006228889A AU2006228889B2 (en) 2005-03-28 2006-03-27 A continuous casting and rolling method for medium plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2005100461333A CN1840252A (zh) 2005-03-28 2005-03-28 中厚板坯连铸连轧板卷的生产工艺
CN200510046133.3 2005-03-28

Publications (1)

Publication Number Publication Date
WO2006102835A1 true WO2006102835A1 (fr) 2006-10-05

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Application Number Title Priority Date Filing Date
PCT/CN2006/000518 WO2006102835A1 (fr) 2005-03-28 2006-03-27 Procede de coulage et de laminage en continu d’une tole moyenne

Country Status (6)

Country Link
EP (1) EP1870172B1 (fr)
KR (1) KR100960096B1 (fr)
CN (1) CN1840252A (fr)
AT (1) ATE515334T1 (fr)
AU (1) AU2006228889B2 (fr)
WO (1) WO2006102835A1 (fr)

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CN109732050A (zh) * 2019-03-06 2019-05-10 南京钢铁股份有限公司 一种连铸机切前辊道冷却系统
CN113634605A (zh) * 2021-08-25 2021-11-12 重庆钢铁股份有限公司 基于视觉识别的中厚板待轧钢板自动分钢控制系统及方法
CN114472547A (zh) * 2022-02-08 2022-05-13 南京钢铁股份有限公司 一种轧制过程中头尾角部裂纹的控制方法
CN114535317A (zh) * 2022-03-14 2022-05-27 武汉钢铁有限公司 一种提高短流程热轧无取向硅钢楔形精度的方法
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CN114713631B (zh) * 2022-05-18 2024-01-12 首钢长治钢铁有限公司 一种轧制生产系统集成
CN114713631A (zh) * 2022-05-18 2022-07-08 首钢长治钢铁有限公司 一种轧制生产系统集成
CN115323160A (zh) * 2022-08-30 2022-11-11 宝武集团鄂城钢铁有限公司 提高连铸坯热装比的方法及系统
CN115488157A (zh) * 2022-09-14 2022-12-20 鞍钢集团北京研究院有限公司 免加热直接轧制高温方坯的送钢节奏优化控制方法及系统
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