GB2050221A - Apparatus for continuous horizontal casting of rectangular ingots - Google Patents

Apparatus for continuous horizontal casting of rectangular ingots Download PDF

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Publication number
GB2050221A
GB2050221A GB8025101A GB8025101A GB2050221A GB 2050221 A GB2050221 A GB 2050221A GB 8025101 A GB8025101 A GB 8025101A GB 8025101 A GB8025101 A GB 8025101A GB 2050221 A GB2050221 A GB 2050221A
Authority
GB
United Kingdom
Prior art keywords
mould
slot
nozzle
opening
end portions
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.)
Withdrawn
Application number
GB8025101A
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium 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
Priority claimed from CH1560477A external-priority patent/CH625437A5/de
Application filed by Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Priority to GB8025101A priority Critical patent/GB2050221A/en
Publication of GB2050221A publication Critical patent/GB2050221A/en
Withdrawn legal-status Critical Current

Links

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
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1284—Horizontal removing
    • 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
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
    • B22D11/047—Means for joining tundish to mould

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

The apparatus includes a casting trough or holding furnace having an outlet in a wall near its bottom, communicating with a mould via an opening in a nozzle; the opening in the nozzle being a slot which, in transverse cross sections, has an outline comprising an upper portion, a lower portion, and two end portions, the width of the slot (i.e. the spacing between the upper and lower portions) being greater near or at the two end portions than elsewhere; and, at least in the regions of greatest width, the nozzle opening having a lower boundary constituted by a run-out surface which falls in the direction from the trough or furnace to the mould and which merges without any step into the inner surface of the mould.

Description

SPECIFICATION Apparatus for continuous horizontal casting of rectangular ingots In our British Patent Application No.
48872/78 (Serial No. 2,010,147) we describe and claim: "Apparatus for continuous horizontal casting of metals including a casting trough or holding furnace having an outlet in a wall near its bottom, communicating with a mould via an opening in a nozzle; the opening in the nozzle being a slot which, in transverse cross sections, has an outline comprising a lower portion concave upwards, which approximates to a circular arc, an upper portion convex downwards, and two end portions of smaller curvature, joining the upper and lower portions, the width of the slot (i.e. the spacing between the upper and lower portions) decreasing from a central value towards the end portions; and, at least in the region of greatest width, the nozzle opening having a lower boundary constituted by a run-out surface which falls in the direction from the trough or furnace to the mould and which merges without any step into the inner surface of the mould." The melt feed system described in detail in our Application No. 48872/78 is particularly suitable for casting round ingots or the like. A modification of that melt feed system can however also be used for casting rectangular Ingots, and the present application; divided from Application No. 48872/78, relates to this modification.
For rectangular ingots it appears that particular regions of the ingot cross section, particularly near the edges, require more heat, that is a larger hot melt feeding than other regions. Accordingly one should dispose the wider part of the pouring slot not in the middle of the slot, as required for round ingots or the like, but in the side parts of the slot, and also form the run-out surface in order to direct more metal to the said regions.
Apparatus according to the present invention, for continuous horizontal casting of metals as ingots of rectangular cross section, includes a casting trough or holding furnace having an outlet in a wall near its bottom, communicating with a mould via an opening in a nozzle; the opening in the nozzle being a slot which, in transverse cross sections, has an outline comprising an upper portion, a lower portion, and two end portions, the width of the slot (i.e. the spacing between the upper and lower portions) being greater near or at the two end portions than elsewhere; and, at least in the regions of greatest width, the nozzle opening having a lower boundary constituted by a run-out surface which falls in the direction from the trough or furnace to the mould and which merges without any step into the inner surface of the mould.
The invention may be embodied in apparatus as described in Application No.
48872/78 with reference to Figs. 1 to 4 of the drawings thereof, subject only to modification of the transverse cross sections of the mould 34, of the nozzle opening 31, and of the outlet 1. That is to say, the mould cross section is rectangular; the cross sections of the nozzle opening have an outline comprising an upper portion, a lower portion, and two end portions, the width of the slot (i.e. the spacing between the upper and lower portions) being greater near or at the two end portions than elsewhere; and the outlet 1 is shaped to match the nozzle opening.
1. Apparatus for continuous horizontal casting of metals as ingots of rectangular cross section, including a casting trough or holding furnace having an outlet in a wall near its bottom, communicating with a mould via an opening in a nozzle; the opening in the nozzle being a slot which, in transverse cross sections, has an outline comprising an upper portion, a lower portion, and two end portions, the width of the slot (i.e. the spacing between the upper and lower portions) being greater near or at the two end portions than elsewhere; and, at least in the regions of greatest width, the nozzle opening having a lower boundary constituted by a run-out surface which falls in the direction from the trough or furnace to the mould and which merges without any step into the inner surface of the mould.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Apparatus for continuous horizontal casting of rectangular ingots In our British Patent Application No.
    48872/78 (Serial No. 2,010,147) we describe and claim: "Apparatus for continuous horizontal casting of metals including a casting trough or holding furnace having an outlet in a wall near its bottom, communicating with a mould via an opening in a nozzle; the opening in the nozzle being a slot which, in transverse cross sections, has an outline comprising a lower portion concave upwards, which approximates to a circular arc, an upper portion convex downwards, and two end portions of smaller curvature, joining the upper and lower portions, the width of the slot (i.e. the spacing between the upper and lower portions) decreasing from a central value towards the end portions; and, at least in the region of greatest width, the nozzle opening having a lower boundary constituted by a run-out surface which falls in the direction from the trough or furnace to the mould and which merges without any step into the inner surface of the mould." The melt feed system described in detail in our Application No. 48872/78 is particularly suitable for casting round ingots or the like. A modification of that melt feed system can however also be used for casting rectangular Ingots, and the present application; divided from Application No. 48872/78, relates to this modification.
    For rectangular ingots it appears that particular regions of the ingot cross section, particularly near the edges, require more heat, that is a larger hot melt feeding than other regions. Accordingly one should dispose the wider part of the pouring slot not in the middle of the slot, as required for round ingots or the like, but in the side parts of the slot, and also form the run-out surface in order to direct more metal to the said regions.
    Apparatus according to the present invention, for continuous horizontal casting of metals as ingots of rectangular cross section, includes a casting trough or holding furnace having an outlet in a wall near its bottom, communicating with a mould via an opening in a nozzle; the opening in the nozzle being a slot which, in transverse cross sections, has an outline comprising an upper portion, a lower portion, and two end portions, the width of the slot (i.e. the spacing between the upper and lower portions) being greater near or at the two end portions than elsewhere; and, at least in the regions of greatest width, the nozzle opening having a lower boundary constituted by a run-out surface which falls in the direction from the trough or furnace to the mould and which merges without any step into the inner surface of the mould.
    The invention may be embodied in apparatus as described in Application No.
    48872/78 with reference to Figs. 1 to 4 of the drawings thereof, subject only to modification of the transverse cross sections of the mould 34, of the nozzle opening 31, and of the outlet 1. That is to say, the mould cross section is rectangular; the cross sections of the nozzle opening have an outline comprising an upper portion, a lower portion, and two end portions, the width of the slot (i.e. the spacing between the upper and lower portions) being greater near or at the two end portions than elsewhere; and the outlet 1 is shaped to match the nozzle opening.
    1. Apparatus for continuous horizontal casting of metals as ingots of rectangular cross section, including a casting trough or holding furnace having an outlet in a wall near its bottom, communicating with a mould via an opening in a nozzle; the opening in the nozzle being a slot which, in transverse cross sections, has an outline comprising an upper portion, a lower portion, and two end portions, the width of the slot (i.e. the spacing between the upper and lower portions) being greater near or at the two end portions than elsewhere; and, at least in the regions of greatest width, the nozzle opening having a lower boundary constituted by a run-out surface which falls in the direction from the trough or furnace to the mould and which merges without any step into the inner surface of the mould.
GB8025101A 1977-12-19 1978-12-18 Apparatus for continuous horizontal casting of rectangular ingots Withdrawn GB2050221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8025101A GB2050221A (en) 1977-12-19 1978-12-18 Apparatus for continuous horizontal casting of rectangular ingots

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1560477A CH625437A5 (en) 1977-12-19 1977-12-19
GB8025101A GB2050221A (en) 1977-12-19 1978-12-18 Apparatus for continuous horizontal casting of rectangular ingots

Publications (1)

Publication Number Publication Date
GB2050221A true GB2050221A (en) 1981-01-07

Family

ID=25716677

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8025101A Withdrawn GB2050221A (en) 1977-12-19 1978-12-18 Apparatus for continuous horizontal casting of rectangular ingots

Country Status (1)

Country Link
GB (1) GB2050221A (en)

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)