EP0613744B1 - Giessvorrichtung zur kontinuierlichen Herstellung von Metallband - Google Patents

Giessvorrichtung zur kontinuierlichen Herstellung von Metallband Download PDF

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Publication number
EP0613744B1
EP0613744B1 EP94102773A EP94102773A EP0613744B1 EP 0613744 B1 EP0613744 B1 EP 0613744B1 EP 94102773 A EP94102773 A EP 94102773A EP 94102773 A EP94102773 A EP 94102773A EP 0613744 B1 EP0613744 B1 EP 0613744B1
Authority
EP
European Patent Office
Prior art keywords
distributor
melt
conveyor belt
casting apparatus
angle
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.)
Expired - Lifetime
Application number
EP94102773A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0613744A1 (de
Inventor
Georg Dr.-Ing. Kehse
Hilmar R. Dr.-Ing. Müller
Hubert Magg
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.)
Wieland Werke AG
Original Assignee
Wieland Werke 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 Wieland Werke AG filed Critical Wieland Werke AG
Publication of EP0613744A1 publication Critical patent/EP0613744A1/de
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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal

Definitions

  • the invention relates to a casting device for the continuous production of a thin metal strip according to the preamble of claim 1.
  • the invention has for its object to design a casting device of the type mentioned so that vacuum can be dispensed with entirely.
  • the object is achieved in a device of the type mentioned in that that the melt distributor opens with a substantially tangential inlet of the distributor base at a central angle ⁇ in the range from 5 to 20 ° before the apex in the 12 o'clock position of the front deflection roller seen in the direction of travel of the conveyor belt and that the front deflection roller is cooled at least in the area swept by the respective center angle ⁇ .
  • the center angle ⁇ is calculated counterclockwise from the 12 o'clock position.
  • the bottom of the distributor is thus nestled against the radius of the deflection roller, that there is practically no height difference between the distributor floor and the conveyor belt level.
  • the task principle according to the invention has the advantage that only a very thin, first solidified shell is curved (with the radius of the deflection roller). Because of the short distance, the small dimensions and the high temperature, this area is straightened out again by the metallostatic pressure of the metal column resting on it during further transport. This means that there are no or only minor microcracks that can be eliminated during the subsequent milling.
  • the disadvantage of the casting device used for the so-called melt-drag method is avoided that the strip thickness fluctuates accordingly over uneven cooling over the bandwidth, since the melting level can freely set in the casting device according to the invention.
  • the range for the central angle ⁇ is 5 to 10 °.
  • Lateral boundaries are integrated in the melt distributor for guiding the solidifying metal melt, in particular the underside of the distributor base resting on the conveyor belt in the region of these lateral boundaries.
  • the melt distributor is arranged depending on the furnace.
  • the smelting distributor is assigned a smoothing strip that is movable in the plane of the conveyor belt or perpendicular to it.
  • Figure 1 shows a casting device for the continuous production of a thin metal belt 1, consisting of a cooled conveyor belt 2, which is guided over deflection rollers 3,4 (4 not shown), a melt distributor 5 and a holding furnace 6 for molten metal 7. (The casting direction is through marked an arrow.)
  • the deflection roller 3 is intensively cooled, at least in the area covered by the respective center angle ⁇ . Since the pouring edge 9 of the distributor base 8 must have a finite material thickness D, the melt distributor 5 is not up to to the 12 o'clock position of the front pulley 3.
  • the distributor base 8 is inclined slightly at an angle ⁇ to the conveyor belt plane E (cf. detail according to FIG. 2).
  • lateral boundaries 10 are integrated in the melt distributor 5.
  • the underside of the distributor base 8 rests on the surface of the conveyor belt 2 only in the area of these limits 10.
  • the middle part is offset by about 0.3 to 0.5 mm in order to prevent the sizing applied to the conveyor belt 2 from being stripped off.
  • lower side dams 11 are attached in a separate design, which are pressed against the metal strip 1 with light pressure for sealing purposes.
  • the combination of the melt distributor 5 with the pressurized holding furnace 6 described in DE-PS 4,132,189 is advantageous.
  • the molten metal 7 in the holding furnace 6 is at level BB. It is slowly driven into the pouring siphon 12 by increasing the gas pressure in the holding furnace 6. It flows slowly and evenly in the area of the distributor base 8, distributed over the width, following the slope with the angle ⁇ , towards the feed point on the revolving roller 3. Because of the pouring edge 9 there is a small step, but this does not in any way lead to the metal melt 7 flowing ahead when starting, since this drop point is still before the 12 o'clock position. This first molten metal 7 is cooled and removed from the moving conveyor belt 2 in the casting direction.
  • the molten pool level is further increased until it is above the conveyor belt level E by the desired belt thickness d.
  • the free-flowing in the casting direction is prevented by the solidification layer thickness that builds up.
  • the level control on the conveyor belt 2 described in DE-PS 4,132,189 can be used for the belt thickness control, which provides corresponding signals to the pressure control of the holding furnace 6.
  • a smoothing strip 13 with a variable position can be used to avoid slag inclusions in the surface of the metal strip 1 will. This only dips 1 to 2 mm into the molten pool level so that it retains the slag on the free surface. In addition, it leads to an even flow.
  • the free melt pool level in the melt distributor 5 can be covered with a lid for protection against oxidation and can be protected with inert gas (not shown).
  • FIG. 4 shows a variant of the casting device according to the invention with furnace-independent melt distributor 5.
  • the molten metal 7 is fed to the melt distributor 5 from a storage vessel 14.
  • a strip 1 of CuFe with the dimensions 400 mm x 8 mm was cast at a casting speed of 10 m / min.
  • the holding furnace 6 was pressurized with nitrogen at a constant pressure increase dp / dt.
  • the pressure increase is calculated from the strip cross-section, the casting speed and the diameter of the holding furnace 6.
  • the initial melt inflow was set approximately to the level necessary to achieve the desired strip cross-section at a given take-off speed.
  • the melt level rose in the siphon 12 and then spread evenly in the distributor 5, following the slight increase in the distributor base 8.
  • an inert gas cover was dispensed with in order to facilitate the observation of the processes.
  • the inert gas cover is necessary for longer casting cycles to minimize slag build-up.
  • a mold level control was switched on, which now took over the control of the furnace pressure dp / dt depending on the target and actual thickness of the metal strip 1. In this way, a 40 m long strip 1 with narrow thickness tolerances could be cast.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP94102773A 1993-03-05 1994-02-24 Giessvorrichtung zur kontinuierlichen Herstellung von Metallband Expired - Lifetime EP0613744B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4306863A DE4306863C1 (de) 1993-03-05 1993-03-05 Gießvorrichtung zur kontinuierlichen Herstellung von Metallband
DE4306863 1993-03-05

Publications (2)

Publication Number Publication Date
EP0613744A1 EP0613744A1 (de) 1994-09-07
EP0613744B1 true EP0613744B1 (de) 1997-01-22

Family

ID=6481983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102773A Expired - Lifetime EP0613744B1 (de) 1993-03-05 1994-02-24 Giessvorrichtung zur kontinuierlichen Herstellung von Metallband

Country Status (7)

Country Link
US (1) US5564489A (sv)
EP (1) EP0613744B1 (sv)
JP (1) JP3179650B2 (sv)
AT (1) ATE148014T1 (sv)
CA (1) CA2116943A1 (sv)
DE (2) DE4306863C1 (sv)
FI (1) FI100776B (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6095383A (en) * 1997-10-31 2000-08-01 Fata Hunter, Inc. Adjustable molten metal feed system
CN102085567B (zh) * 2010-11-18 2015-04-29 滨州益谦非晶金属材料有限公司 一种铁磁性急冷金属带材卷取装置
CN104399918B (zh) * 2014-11-17 2016-09-28 青岛云路先进材料技术有限公司 一种连续生产纳米晶带材的方法及系统
CN110076308A (zh) * 2019-05-30 2019-08-02 燕山大学 一种非晶合金连铸机及其连续铸造方法
CN114269492B (zh) 2019-07-03 2023-05-09 斯佩拉有限公司 带材连铸设备的熔体供给

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH622725A5 (en) * 1977-08-26 1981-04-30 Erik Allan Olsson Method and apparatus for casting a metal band
IN166914B (sv) * 1984-09-13 1990-08-04 Allegheny Ludlum Steel
JPS61249648A (ja) * 1985-04-26 1986-11-06 Sumitomo Metal Ind Ltd 薄鋳片の連続鋳造方法
JPH01237051A (ja) * 1988-03-18 1989-09-21 O C C:Kk 帯状鋳塊の連続鋳造法
DE3810302A1 (de) * 1988-03-24 1989-10-12 Mannesmann Ag Giesseinrichtung zur kontinuierlichen herstellung von metallband
JPH03174951A (ja) * 1989-12-04 1991-07-30 O C C Co Ltd 連続鋳造方法
IT1241001B (it) * 1990-10-31 1993-12-27 Magneti Marelli Spa Procedimento per la produzione di una griglia per elettrodi di accumulatori al piombo
DE4218587C1 (de) * 1991-09-27 1993-11-04 Wieland Werke Ag Verfahren und vorrichtung zur herstellung eines endabmessungsnahen metallbandes
DE4132189C1 (en) * 1991-09-27 1993-02-04 Wieland-Werke Ag, 7900 Ulm, De Metal strip prodn. - by feeding molten metal from tundish via casting nozzle onto cooled conveyor belt
US5293926A (en) * 1992-04-30 1994-03-15 Allegheny Ludlum Corporation Method and apparatus for direct casting of continuous metal strip

Also Published As

Publication number Publication date
US5564489A (en) 1996-10-15
DE59401625D1 (de) 1997-03-06
DE4306863C1 (de) 1994-06-16
JPH06254660A (ja) 1994-09-13
FI941012A0 (fi) 1994-03-03
CA2116943A1 (en) 1994-09-06
EP0613744A1 (de) 1994-09-07
FI100776B (sv) 1998-02-27
ATE148014T1 (de) 1997-02-15
FI941012A (sv) 1994-09-06
JP3179650B2 (ja) 2001-06-25

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