US3428111A - Continuous casting method using a rotating wheel - Google Patents

Continuous casting method using a rotating wheel Download PDF

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Publication number
US3428111A
US3428111A US447651A US3428111DA US3428111A US 3428111 A US3428111 A US 3428111A US 447651 A US447651 A US 447651A US 3428111D A US3428111D A US 3428111DA US 3428111 A US3428111 A US 3428111A
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US
United States
Prior art keywords
mold
wheel
tundish
metal
casting
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
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US447651A
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English (en)
Inventor
Ivan Gyongyos
Helmut Kotthaus
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Alcan Holdings Switzerland AG
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Alusuisse Holdings AG
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Publication date
Application filed by Alusuisse Holdings AG filed Critical Alusuisse Holdings AG
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02—Compresses or poultices for effecting heating or cooling
    • 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
    • B22D11/0602—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 casting wheel and belt, e.g. Properzi-process
    • 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
    • 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
    • B22D11/0642—Nozzles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0001—Body part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/20—Inflatable splint

Definitions

  • a continuous casting machine that comprises a cooled wheel rotatable about its axis and has an annular groove and a cover defining with the groove a continuous casting mold, and a tundish supplying molten metal to the mold that includes a spout fitting for sealing the mold.
  • the invention relates to continuous casting, and relates more particularly to continuous casting of aluminum alloys; still more particularly, it relates to continuous casting of the type wherein the casting mold is formed by a portion of the grooved peripheral annular rim, open towards the exterior, of a rotating cooled casting wheel and a cover band that covers that portion and moves synchronously therewith.
  • Casting wheels of this type are known.
  • the cover band is usually endless; the liquid metal to be cast is poured into the mold which is formed between the rim and the cover band, and the solidified metal leaves the wheel together with the cover band, and is subsequently removed as continuous strip or bar.
  • a constant-level device in the tundish which device may include a float.
  • such a device may make use of variations in capacity between an electrode formed by the surface of the metal and another electrode formed by a metal plate arranged above it, signals from the device being used to control the tilting of a ladle or furnace from which the liquid metal is supplied to the tundish.
  • This has the advantage that the liquid metal will be fed from the supply ladle or furnace into the tundish and from there into the mold with but a minimum of turbulence.
  • the sump namely the liquid metal in the mold upstream of the solidified part, extends on both sides of the highest point of the base of the mold.
  • the molten metal is fed through the tundish at a point slightly below said highest point of the base of the mold, thus in advance of that highest point counted in the direction of rotation of the wheel.
  • the sump is terminated by the solidification front. The position of the solidification front is determined by the cooling adjustment of the casting wheel.
  • the mass of liquid metal of the sump is such that the area of the free surface of the metal is large in comparison with the depth of the sump.
  • the sump is therefore given a greater cushioning or buffer action and is capable of absorbing the small variations in the supply of the molten metal which are unavoidable in spite of any automatic regulation of the level of the surface of the metal.
  • the instant invention therefore offers the advantage that the stream of molten metal passes from the tundish to join the liquid mass in the mold at a regular rate without falling through air.
  • the metal is accordingly distributed uniformly over the width of the mold and flows without turbulence until it solidifies. At the same time, the formation and entrainment of oxide films are effectively and simply prevented.
  • FIG. 1 is a schematic view of a continuous casting machine of the rotating wheel type, in accordance with the invention
  • FIG. 2 is a large scale fragmentary vertical central sectional view thereof
  • FIG. 3 is a fragmentary sectional view on a still larger scale, taken on the line 3-3 of FIG. 2, and
  • FIG. 4 is a fragmentary sectional view similar to FIG. 3, but taken on the line 4-4 of FIG. 2.
  • a continuous casting machine of the rotating wheel type comprises a casting wheel 1 which rotates about an axis x in the direction of an arrow A, and has a rim 2.
  • the rim 2 is recessed and defines an annular groove 4 which is open towards the outside.
  • the groove 4 extends throughout the entire circumference of the wheel 1, and for a sector portion thereof forms a part of the arcuate casting mold.
  • An endless cover band 3 is provided that runs around guide rolls 7, 8, 9 and 10 and, throughout the mold portion of the groove 4, makes contact with the guiding wheel 1 covering the groove 4 thereby completing therewith the arcuate mold.
  • Metal to be cast is supplied from a supply vessel (not shown) to a tundish 5, and flows from the tundish into the mold.
  • the wheel 1 is internally cooled by a stream of water, and the cover band 3 is cooled by water sprays 11, with the result that the metal solidifies in the mold to form a continuous casting 6, which leaves the wheel with the cover band 3 as shown in FIG. 1 and thereafter is continuously drawn away from the machine.
  • the groove 4 may have any desired form in cross-section, it is preferably substantially U-shaped, and has a peripheral base and sides that are inclined outwardly (FIG. 3) so that the removal of the casting is facilitated.
  • the cover band 3, which is advantageously made of steel, is preferably driven by the casting wheel 1 and hence moves in synchronism with the rim 2 of the wheel.
  • the guide wheel 7 is placed immediately above the top of the wheel 1 and presses the band 3 against the wheel 1, so that at its inlet the mold groove 4 is substantially horizontal.
  • the discharge end of the tundish 5 exactly matches the cross section of the mold 4 and bears against the rim 2 to make an effective seal at a point where the rim 2 is moving upwards.
  • the tundish 5 is substantially horizontal, and is pivotally mounted about a rod 14 which is parallel to the axis x of the wheel 1, so that the'delivery end or spout of the tundish 5 is pressed against the rim walls of the groove 4 by gravity. Additional pressure may be exerted by means of a piston 16 that may be subjected to hydraulic or pneumatic pressure, or again the tundish 5 may be loaded by a spring or a weight so that its spout 15 is firmly pressed into contact with the groove 4. It is important that a good seal should be made at the spout 15 and the spout 15, as described below, may be covered with suitable sealing material for the purpose.
  • the pivotal mounting of the tundish about the rod 14 presents the advantage that a seal is still maintained if the casting wheel is not truly circular or loses its circular shape as a result of thermal distortion. It is desirable that the rod 14 should be at the end of the tundish remote from the spout 15 so that the amplitude of any rocking movement is small.
  • the spout 15 engages the groove 4 of the wheel at a point where this is moving upwards there is a fairly smooth transition between the base of the tundish 5 and the base of the groove 4, and the metal flows from the tundish 5 to the mold horizontally as a steady smooth stream without turbulence, in contrast to the thin free cascading of the liquid metal onto the bottom of the mold in previous practice (see FIGS. 3 and 4).
  • the spout 15 therefore needs to be made of a proper material for proper sealing.
  • the spout 15, may, as shown in FIG. 2, be made of a separate piece, and may be composed of a material, namely a sealing material, that may be different from the material of the remainder of the tundish 5. If the tundish 5 is made of a material that does provide enough sealing, then the spout 15 may be made of one piece with the tundish 5. If, on the other hand, the tundish 5 is made of a material that does not provide the needed sealing, then those surfaces of the tundish 5 that make contact with respective surfaces of the groove 4 may be provided with a sealing layer or coating.
  • the molten metal is supplied from the tundish 5 through a trough 12 and a nozzle 19 thereof, and the supply is controlled by a valve member that cooperates with the nozzle 19, and which includes a circular float 13.
  • the float control ensures that the surface of the liquid metal in the tundish 5 is kept at a substantially constant level.
  • a stripping bar 17 may be provided just above the spout 15. There is thus substantially no opportunity for reoxidation of the metal that actually enters the mold.
  • the rate of feed of the metal to the mold and the speed of rotation of the wheel 1 are correlated so that at all times there is molten metal on both sides of the highest point 18 of the base of the mold.
  • the actual solidification front that is to say the point where the metal starts to solidify, is preferably maintained fairly close to the top of the wheel.
  • the solidification front is to the left of the highest point 18 of the base of the groove 4 of the wheel 1.
  • the front in FIG. 2 is shown merely by way of exemplification; the front may, in practice, extend instead further in the direction of the arrow A of FIG. 2, throughout an angle of 40 or even 50.
  • the forward portions 21 of the side walls 20 of the tundish 5 will make sealing contact with the lateral extensions of the cover band 3.
  • the side walls 20 extend above the rim 2 of the wheel 1.
  • These portions 21 will be concavely shaped (see FIG. 2), in order to match the convex bend of the cover band 3.
  • the concave frontal portions 21 may be provided with sealing material of elastic refractory properties, for instance material available under the trade names Marinite or Fiberfrax. The tundish 5 will thus be sealed against the cover band 3, and the liquid metal will come into contact with the cover band 3 before it actually touches any part of the wheel 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Thermal Sciences (AREA)
  • Continuous Casting (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Surgical Instruments (AREA)
US447651A 1964-04-20 1965-04-13 Continuous casting method using a rotating wheel Expired - Lifetime US3428111A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH507764A CH416955A (de) 1964-04-20 1964-04-20 Verfahren und Maschine zum Stranggiessen von Metallen
ZA652022 1965-04-15
US73006868A 1968-05-17 1968-05-17

Publications (1)

Publication Number Publication Date
US3428111A true US3428111A (en) 1969-02-18

Family

ID=27175086

Family Applications (3)

Application Number Title Priority Date Filing Date
US447651A Expired - Lifetime US3428111A (en) 1964-04-20 1965-04-13 Continuous casting method using a rotating wheel
US484691A Expired - Lifetime US3431971A (en) 1964-04-20 1965-09-02 Continuous casting machine of the rotatable wheel type
US730068A Expired - Lifetime US3548819A (en) 1964-04-20 1968-05-17 Thermal-pressure splint

Family Applications After (2)

Application Number Title Priority Date Filing Date
US484691A Expired - Lifetime US3431971A (en) 1964-04-20 1965-09-02 Continuous casting machine of the rotatable wheel type
US730068A Expired - Lifetime US3548819A (en) 1964-04-20 1968-05-17 Thermal-pressure splint

Country Status (7)

Country Link
US (3) US3428111A (ja)
BE (1) BE662609A (ja)
CH (1) CH416955A (ja)
DE (2) DE1483638C3 (ja)
GB (2) GB1067114A (ja)
NL (1) NL147657B (ja)
NO (1) NO115814B (ja)

Cited By (6)

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US3746072A (en) * 1971-01-20 1973-07-17 Southwire Co Method of pouring molten metal
JPS51103032A (ja) * 1975-02-04 1976-09-11 Secim Donorenzokuchuzosetsubinokyokyusochi
US4566524A (en) * 1982-12-02 1986-01-28 Southwire Company Method of and apparatus for casting a compound metal bar
US4679613A (en) * 1982-12-02 1987-07-14 Southwire Company Method of and apparatus for casting a compound metal bar
US4691758A (en) * 1983-10-11 1987-09-08 Palmer Forrest M Two-drum, two-layer continuous meld-casting method
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US510808A (en) * 1893-12-12 lloyd
US745786A (en) * 1902-08-18 1903-12-01 Albert L Cole Machine for fibering metals.
US1600668A (en) * 1920-11-11 1926-09-21 Cleveland Trust Co Process and apparatus for casting sheet metal
US2393213A (en) * 1943-02-27 1946-01-15 Willard Storage Battery Co Casting machine
US3080627A (en) * 1958-06-11 1963-03-12 Aluminium Lab Ltd Continuous casting of metal
US3193888A (en) * 1961-08-29 1965-07-13 Aluminium Lab Ltd Continuous casting apparatus including endless steel belt with red iron oxide coating

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746072A (en) * 1971-01-20 1973-07-17 Southwire Co Method of pouring molten metal
JPS51103032A (ja) * 1975-02-04 1976-09-11 Secim Donorenzokuchuzosetsubinokyokyusochi
JPS54104421U (ja) * 1975-02-04 1979-07-23
US4566524A (en) * 1982-12-02 1986-01-28 Southwire Company Method of and apparatus for casting a compound metal bar
US4679613A (en) * 1982-12-02 1987-07-14 Southwire Company Method of and apparatus for casting a compound metal bar
US4691758A (en) * 1983-10-11 1987-09-08 Palmer Forrest M Two-drum, two-layer continuous meld-casting method
WO2020219559A1 (en) * 2019-04-26 2020-10-29 Wirtz Manufacturing Co., Inc. Battery grid continuous casting machine and method
US10981218B2 (en) 2019-04-26 2021-04-20 Wirtz Manufacturing Co., Inc. Battery grid continuous casting machine and method

Also Published As

Publication number Publication date
NO115814B (ja) 1968-12-09
NL6504982A (ja) 1965-10-21
NL147657B (nl) 1975-11-17
CH416955A (de) 1966-07-15
DE1483638C3 (de) 1975-04-17
GB1067114A (en) 1967-05-03
DE1925415A1 (de) 1969-12-11
GB1273802A (en) 1972-05-10
BE662609A (ja) 1965-08-17
US3431971A (en) 1969-03-11
US3548819A (en) 1970-12-22
DE1483638B2 (de) 1973-09-13
DE1483638A1 (de) 1969-05-22

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