US2781562A - Apparatus for the continuous casting of metals - Google Patents

Apparatus for the continuous casting of metals Download PDF

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Publication number
US2781562A
US2781562A US350802A US35080253A US2781562A US 2781562 A US2781562 A US 2781562A US 350802 A US350802 A US 350802A US 35080253 A US35080253 A US 35080253A US 2781562 A US2781562 A US 2781562A
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US
United States
Prior art keywords
mould
coolant
casting
walls
continuous 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
Application number
US350802A
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English (en)
Inventor
John F Hobbs
Neil B Muir
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.)
Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US2781562A publication Critical patent/US2781562A/en
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    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/049—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for direct chill casting, e.g. electromagnetic casting

Definitions

  • This invention relates to an apparatus for the continuous casting of metals and alloys, and more particularly to an improved mould for the continuous casting of rectangular slabs of aluminium and aluminium base alloys and other non-ferrous metals and alloys.
  • the object of the present invention is to reduce or to avoid completely the formation of this solidification gap between mould and ingot in simple and effective manner.
  • the invention comprises apparatus comprising a mould having end walls of normal rigid construction and side walls formed of thin sheet metal or other material of adequate thermal conductivity and adapted to be deflected inwardly to make substantially complete contact with the surface of the solidifying casting during at least the major part of its passage through the mould.
  • Deflection of the side walls may be effected by pressure exerted by the mould coolant, for example in the form of jets or sprays, and/or by means of applied air pressure.
  • Air pressure may be used when the coolant exerts no considerable pressure on thewall of the mould, or it may be used to supplement the effect produced by coolant jets. Generally the air pressure required to eflect the necessary deflection will be only of the order of a few inches of water gauge.
  • the air pressure may be applied by means of a suitably disposed series of jets, slits or the like in communication with a compressed air supply.
  • the thin flexible walls may be attached to the remainder of the mould at the top and sides or they may be allowed to float at one of these positions, being held in position by the applied coolant and/ or air pressure.
  • the flexible walls When the flexible walls are not attached at their sides to the end walls, they should preferably overlap the end walls to an extent suflicient to avoid formation of a gap between the edge of the end wall and the flexible wall on deflection of the latter.
  • the flexible side walls are preferably attached to the remainder of the mould at the top and sides. At their bottom edge they may be connected to the lower flange of the coolant jacket by a flexible seal adapted to prevent loss of coolant but permit inward deflection of the walls, or the bottom edge may be free so that on deflection a slit is formed through which coolant flows from the jacket to cool the casting by direct contact.
  • brass sheet of 0.0035 in. thickness may be employed satisfactorily for the side walls of a water-cooled mould for easing aluminium base alloy slabs.
  • Figure 1 is a top plan view of a jacketed mould in accordance with the invention.
  • Figure 2 is a section on the line AA of Figure 1; but showing a casting in position;
  • Figure 3 is a section on the line BB of Figure 1;
  • Figure 4 is a top plan view of a non-jacketed mould in accordance with the invention.
  • Figure 5 is a section on the line CC of Figure 4; but showing a casting in position and in addition the cooling means for the side walls of the mould.
  • Figure 6 is a section on the line DD of Figure 4, but showing in addition cooling means for the end walls of the mould.
  • the mould assembly 1 consists of a pair of curved rigid end walls 2 and a pair of flexible thin sheet metal side walls 3, the whole being fitted with a channel section water jacket 4 (coolant entry and exit pipes not shown) the upper portion of which constitutes a rectangular frame.
  • the jacket is rigidly connected to the end walls 2 and to the upper edge of the side walls 3, whilst the lower edge of the latter is connected to the lower flange of the jacket by flexible sealing means 5 which prevents loss of coolant from the jacket but permits inward deflection of the side wall to enable it to conform under the coolant pressure to the shape of the solidifying ingot.
  • a unitary jacket may be employed for the whole mould, or the jacket may be divided into separate compartments for cooling side and end walls respectively, thus permitting ditferential rates of cooling if desired.
  • the mould assembly 6 consists of a continuous flange 7 with rigid end walls 8 and flexible thin sheet metal side walls 9, the latter secured along their upper edge to the flange but not otherwise attached.
  • the end walls are cooled by normal spray rings 10, whilst the side walls are cooled by banks of water jets 11 impinging over the full area of the walls.
  • a continuous casting mold comprising a substantially rectangular frame, rigid end walls fixed to said frame and depending therefrom, side walls of thin, deformable, heat-conducting material fixed to said frame at their upper edges only and means for applying a coolant to the surfaces of said side walls away from the casting to 3 deflect the opposite surfaces against the casting as the casting shrinks during its travel through the mold.
  • coolant applying means comprises spray heads projecting coolant against the surfaces of said side walls away from the casting.
  • said coolant applying means comprises a coolant containing jacket dependent from said frame, said side and end walls forming the inner sides of said jacket.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US350802A 1952-05-14 1953-04-24 Apparatus for the continuous casting of metals Expired - Lifetime US2781562A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB315167X 1952-05-14

Publications (1)

Publication Number Publication Date
US2781562A true US2781562A (en) 1957-02-19

Family

ID=10324253

Family Applications (1)

Application Number Title Priority Date Filing Date
US350802A Expired - Lifetime US2781562A (en) 1952-05-14 1953-04-24 Apparatus for the continuous casting of metals

Country Status (6)

Country Link
US (1) US2781562A (xx)
BE (1) BE519856A (xx)
CH (1) CH315167A (xx)
FR (1) FR1077328A (xx)
GB (1) GB718644A (xx)
NL (1) NL87005C (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815551A (en) * 1955-06-21 1957-12-10 British Iron Steel Research Method of and apparatus for the casting of metal
BE541116A (xx) * 1955-09-06
BE560271A (xx) * 1956-08-27

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1888913A (en) * 1929-02-28 1932-11-22 Erichsen Abraham Martinius Mold for casting metals and metal alloys
US2187720A (en) * 1939-02-02 1940-01-23 Edward R Williams Method and apparatus for continuous metal casting
US2640235A (en) * 1949-06-02 1953-06-02 Clarence W Hazelett Metal manufacturing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1888913A (en) * 1929-02-28 1932-11-22 Erichsen Abraham Martinius Mold for casting metals and metal alloys
US2187720A (en) * 1939-02-02 1940-01-23 Edward R Williams Method and apparatus for continuous metal casting
US2640235A (en) * 1949-06-02 1953-06-02 Clarence W Hazelett Metal manufacturing apparatus

Also Published As

Publication number Publication date
CH315167A (de) 1956-07-31
NL87005C (xx)
GB718644A (en) 1954-11-17
BE519856A (xx)
FR1077328A (fr) 1954-11-05

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