EP1032716A1 - Four pour caisse a rouleau - Google Patents

Four pour caisse a rouleau

Info

Publication number
EP1032716A1
EP1032716A1 EP98955579A EP98955579A EP1032716A1 EP 1032716 A1 EP1032716 A1 EP 1032716A1 EP 98955579 A EP98955579 A EP 98955579A EP 98955579 A EP98955579 A EP 98955579A EP 1032716 A1 EP1032716 A1 EP 1032716A1
Authority
EP
European Patent Office
Prior art keywords
coil
saddle
box furnace
coil box
furnace according
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP98955579A
Other languages
German (de)
English (en)
Other versions
EP1032716B1 (fr
Inventor
Ernst-Ulrich Becker
Detlef Bosselmann
Michael Degner
Michael Nowak
Gerd Thiemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Stahl AG
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 ThyssenKrupp Stahl AG filed Critical ThyssenKrupp Stahl AG
Publication of EP1032716A1 publication Critical patent/EP1032716A1/fr
Application granted granted Critical
Publication of EP1032716B1 publication Critical patent/EP1032716B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/68—Furnace coilers; Hot coilers

Definitions

  • the invention relates to a coil box furnace with a heating device for reheating a coil to the rolling temperature and a saddle for receiving the coil to be reheated.
  • peripheral devices In the context of cost-optimized production, the production of hot strip increasingly forces the use of peripheral devices to minimize material waste. These include, in particular, devices with which a supporting strip in the process line can be preserved in the event of a malfunction in such a way that it can be reintroduced into the process line after the malfunction has been rectified in order to continue production.
  • a coil box in the infeed of a finishing line enables the pre-strip to be wound up and buffered for around ten minutes before use in the finishing line for mild steel grades.
  • Such an arrangement of a coil box is known for example from DE-OS 2 256 030.
  • EP 0 734 793 AI discloses viewing coil boxes in front of and behind a reversing frame.
  • a coil box furnace known from practice is designed as a chamber furnace with a fixed and a movable housing part.
  • the movable housing part has an electromechanical drive and can be moved on rail wheels.
  • the furnace is heated by meandering heating conductors, which are installed on the four side walls of the furnace and are combined into individual control groups.
  • the not specially heated circular segment-shaped saddle for the coil stands on a base plate made of refractory concrete and a frame made of heat-resistant steel (see Fig. 1).
  • the object of the present invention is to improve a coil box furnace of the type mentioned at the outset such that the coil temporarily stored therein can be heated as evenly as possible to the rolling temperature, so that the temperature-related final thickness tolerances of the finished rolled strip can be minimized.
  • the saddle has at least two bearing surfaces which support the coil tangentially on its outer circumference, the saddle preferably being trapezoidal.
  • the solution according to the invention is based on the knowledge that the periodic temperature changes in the preliminary strip taken from the known coil box furnace are caused by the circular saddle of the coil box furnace. Because of the circular-shaped receiving saddle, thermal energy is extracted from the overlying band by radial heat conduction in a relatively large area, which leads to the periodic temperature changes mentioned.
  • the support area of the receiving saddle is significantly reduced and thus the heat loss is considerably reduced, so that the rolling behavior in the finished season and the thickness tolerances of the finished rolled strip are improved accordingly.
  • the contact surfaces of the saddle are formed from a plurality of elevations spaced apart in the direction of the coil width. This further reduces the actual contact area between the saddle and the coil.
  • the saddle can preferably be made of nested stainless steel slabs with protruding ones Surveys. In contrast to the circular segment-shaped saddle, no refractory material is required to stabilize the receiving saddle according to the invention.
  • the receiving saddle is also provided with a heating device.
  • An inductive saddle heater can preferably be used.
  • a further advantageous embodiment of the coil box furnace according to the invention is that it also has a device for rotating or oscillating the coil. This configuration also contributes to an equalization of the temperature profile of the preliminary strip reinserted in the finished series.
  • the distance between the contact surfaces can be adjusted in relation to the coil diameter and / or the coil width.
  • the bearing surfaces are formed by disc rollers with circular discs spaced along the longitudinal axes of the rollers. At least one of the disc rollers can be coupled to a rotary drive for rotating or oscillating the coil.
  • Fig. 1 is a sectional side view of a
  • FIG. 2 shows a front view of a receiving saddle according to the invention with pre-strip coils of different diameters and different widths, indicated by dash-dotted lines;
  • Fig. 3 is a side view of the saddle shown in Fig. 2;
  • FIG. 4 is a top view of the receiving saddle shown in FIG. 2;
  • FIG. 5 shows a front view of a second embodiment of a receiving saddle according to the invention.
  • Fig. 6 is a plan view of the receiving saddle shown in Fig. 5.
  • the coil box furnace shown in FIG. 1 is a chamber furnace with a fixed housing part 1 and a housing part 2 which can be moved on rails.
  • the furnace is equipped with a heating device (not shown) for reheating a blanking coil 3 to the rolling temperature.
  • a circular saddle 4 is used to hold the coil.
  • the coil box furnace according to the invention has a receiving saddle, as is shown schematically for example in FIGS. 2 to 4.
  • the receiving saddle 4 ' consists of a base plate 5 with two spaced supports 6, 7, on each of which a support 8, 9 is attached.
  • the supports 8, 9 form two support surfaces 10, 11 which support the lead coil 3 tangentially on its outer circumference.
  • the support surfaces 10, 11 consist of nested stainless steel slabs with a large number of elevations 12 spaced in the direction of the coil width.
  • the elevations can also be convex.
  • the sliver coil 3, 3 'to be picked up by the saddle 4' can have different diameters and also different widths. With increasing diameter of the preliminary strip coil 3, the distance between the contact areas between the coil 3 and the contact surfaces 10, 11 also increases.
  • the saddle 4' can additionally be equipped with a heating device (not shown).
  • the heating device can preferably consist of an inductive saddle heater.
  • FIG. 5 shows a second exemplary embodiment of a receiving saddle for a coil box furnace according to the invention shown schematically.
  • the contact surfaces of the saddle 4 ′′ are formed by rotatable disc rollers 14 with circular discs 15 spaced along the longitudinal axes of the rollers.
  • the disc rollers 14 are mounted in support blocks 16, 17 which rotatably support the axes of rotation 18 or shafts 19 of the disc rollers in the spaces between the spaced circular disks 15 and have recesses in the area of the circular disks 15.
  • the distance between the support surfaces i. the distance A of the roller longitudinal axes is adjustable.
  • one of the disc rollers 14 is provided with a rotary drive having a gear 20 and an electric motor 21, by means of which the overlying coil 3 can be rotated during the heating in the coil box furnace in order to equalize the temperature profile.
  • the rotation can take place exclusively in one direction of rotation or alternatively alternately in both directions of rotation, so that the coil 3 practically executes an oscillating movement.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Induction Heating (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

L'invention concerne un four pour caisse à rouleau comprenant un dispositif de chauffage pour réchauffer un rouleau (3, 3') et l'amener à la température de laminage et un dégorgeoir (4') pour recueillir le rouleau (3, 3') à chauffer à nouveau. Afin de pouvoir porter le rouleau (3, 3') stocké temporairement dans le four pour caisse à rouleau de manière aussi régulière que possible à la température de laminage, dans le but de minimiser les tolérances d'épaisseurs finales inhérentes à la température, il est prévu de munir le dégorgeoir (4') de deux surfaces d'appui (10, 11) soutenant le rouleau (3, 3') sur sa périphérie extérieure.
EP98955579A 1997-11-18 1998-11-14 Four pour caisse a rouleau Expired - Lifetime EP1032716B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19750998 1997-11-18
DE19750998A DE19750998C1 (de) 1997-11-18 1997-11-18 Coilboxofen
PCT/EP1998/007298 WO1999025883A1 (fr) 1997-11-18 1998-11-14 Four pour caisse a rouleau

Publications (2)

Publication Number Publication Date
EP1032716A1 true EP1032716A1 (fr) 2000-09-06
EP1032716B1 EP1032716B1 (fr) 2002-09-04

Family

ID=7849040

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98955579A Expired - Lifetime EP1032716B1 (fr) 1997-11-18 1998-11-14 Four pour caisse a rouleau

Country Status (10)

Country Link
EP (1) EP1032716B1 (fr)
JP (1) JP2001523762A (fr)
AR (1) AR014024A1 (fr)
AT (1) ATE223508T1 (fr)
AU (1) AU734790B2 (fr)
CA (1) CA2310411A1 (fr)
DE (2) DE19750998C1 (fr)
TW (1) TW490491B (fr)
WO (1) WO1999025883A1 (fr)
ZA (1) ZA9810397B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101263853B1 (ko) 2011-07-18 2013-05-13 주식회사 포스코 온간압연 열처리 시편 자동 취입장치 및 이를 이용한 시편 온도 편차 균일화 방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE609979C (de) * 1929-08-11 1935-02-27 Heimsoth & Vollmer G M B H Vorrichtung zum Erwaermen von schweren Arbeitsstuecken
GB1373375A (en) * 1971-11-15 1974-11-13 Canada Steel Co Method for rolling hot metal workpieces
DE2613459A1 (de) * 1976-03-30 1977-10-13 Schloemann Siemag Ag Verfahren und anlage zur vermeidung des schrottanfalles in kontinuierlichen breitbandstrassen
GB2167170B (en) * 1984-11-21 1988-05-18 Salem Furnace Heat treatment of coils of metal
US5383651A (en) * 1994-02-07 1995-01-24 Pyrotek, Inc. Aluminum coil annealing tray support pad
DE4434370C2 (de) * 1994-09-15 1998-05-28 Mannesmann Ag Ofenanlage als Zwischenspeicher hinter einer Dünnbrammengießanlage
DE19512953A1 (de) * 1995-03-28 1996-10-02 Mannesmann Ag Verfahren und Vorrichtung zur Herstellung von warmgewalztem Stahlband

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9925883A1 *

Also Published As

Publication number Publication date
JP2001523762A (ja) 2001-11-27
WO1999025883A1 (fr) 1999-05-27
DE19750998C1 (de) 1999-08-19
AU1235299A (en) 1999-06-07
EP1032716B1 (fr) 2002-09-04
ATE223508T1 (de) 2002-09-15
CA2310411A1 (fr) 1999-05-27
AU734790B2 (en) 2001-06-21
AR014024A1 (es) 2001-01-31
ZA9810397B (en) 1999-05-13
TW490491B (en) 2002-06-11
DE59805451D1 (de) 2002-10-10

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