EP0155836B2 - Giessform zum Horizontalstranggiessen - Google Patents

Giessform zum Horizontalstranggiessen Download PDF

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Publication number
EP0155836B2
EP0155836B2 EP85301854A EP85301854A EP0155836B2 EP 0155836 B2 EP0155836 B2 EP 0155836B2 EP 85301854 A EP85301854 A EP 85301854A EP 85301854 A EP85301854 A EP 85301854A EP 0155836 B2 EP0155836 B2 EP 0155836B2
Authority
EP
European Patent Office
Prior art keywords
mould
tube
housing structure
passage
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
EP85301854A
Other languages
English (en)
French (fr)
Other versions
EP0155836B1 (de
EP0155836A2 (de
EP0155836A3 (en
Inventor
Darryl Toothill
David Stonecliffe
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.)
Davy Mckee Sheffield Ltd
Original Assignee
Davy Mckee Sheffield 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
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Application filed by Davy Mckee Sheffield Ltd filed Critical Davy Mckee Sheffield Ltd
Priority to AT85301854T priority Critical patent/ATE35923T1/de
Publication of EP0155836A2 publication Critical patent/EP0155836A2/de
Publication of EP0155836A3 publication Critical patent/EP0155836A3/en
Application granted granted Critical
Publication of EP0155836B1 publication Critical patent/EP0155836B1/de
Publication of EP0155836B2 publication Critical patent/EP0155836B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D11/04—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

Definitions

  • the invention deals with a horizontal continuous casting mould according to the features laid out in the preamble of claim 1.
  • horizontal continuous casting mould consist of a mould tube which defines the mould passage mounted in a housing structure.
  • the housing structure provides liquid cooling for molten metal passed along the mould passage so that the molten metal begins to solidify in the mould passage and for the cross-section of the casting to be determined by the cross-section,of the mould passage.
  • British Patent Specification No. 1525036 discloses a vertical continuous casting mould in which liquid coolant is circulated through an annular duct between a mould tube and a spacer surrounding the mould tube.
  • the mould tube and the spacer are located between pole pieces of an electro-magnetic inductor for stirring molten metal passed along the mould tube.
  • the electro-magnetic inductor is contained within the same path as the duct and, after passing through the duct, the liquid coolant flows around and cools the electromagnetic inductor.
  • the mould tube and the spacer are replaced together so that, if a change is made to the cross-section of the mould tube, a corresponding change is made to the spacer so that the cross-section of the duct between the spacer and the mould tube remains substantially the same.
  • EP-A-0071580 upon which the preamble of claim 1 is based, discloses a horizontal continuous casting mould having a housing structure, a mould tube defining a mould passage, the tube being removably mounted in the housing structure with the longitudinal axis of the mould passage disposed substantially horizontal; a spacer mounted in the housing structure and surrounding the mould tube and defining therewith a duct between the outside of the mould tube and in the inside of the spacer; means define a path including the duct for the passage of cooling liquid and means within the housing structure defining an annular enclosure surrounding the mould tube.
  • a horizontal continuous casting mould comprises a housing structure; a mould tube defining a mould passage, said tube being removably mounted in the housing structure with the longitudinal axis of the mould passage disposed substantially horizontal; a spacer mounted in the housing structure and surrounding the mould tube and defining therewith a duct between the outside of the mould tube and the inside of the spacer; means defining a path including said duct for the passage of cooling liquid; means within the housing structure defining an annular enclosure surrounding the mould tube; characterised in that means define a path including said enclosure for the passage of cooling liquid, said paths having a common inlet and separate outlets for the cooling liquid; and that the spacer is removably mounted in a tube which forms the inner wall of said annular enclosure and for each size of mould tube a different correspondingly sized spacer is employed such that the cross-section of the duct remains substantially the same.
  • the housing defines a pair of chambers and liquid coolant is forced from one of the chambers along both of said paths and the coolant passing through said duct returns to the other of said chambers.
  • the enclosure may contain a coil for electro-magnetic stirring of molten metal passed along the mould passage.
  • a horizontal continuous casting mould has a housing structure 1 which is located in the casting position between the supply tundish for the molten metal and a run-out table for the casting, neither of which are shown.
  • the housing structure is mainly of fabricated metal plates and it defines a pair of chambers 3, 5 located close to the base of the housing structure.
  • the chambers are defined in part by a cylindrical tube 6 which also defines an opening 7 through the structure, the longitudinal axis of the opening being arranged substantially horizontal.
  • a tube 9 having an outwardly extending flange at one end is mounted within the opening 7.
  • a number of bolts 10 secure the tube 9 to an inwardly extending rib 13 on the tube 6 and thus form an annular enclosure 15.
  • a group of holes 17 are provided in the tube 6 and the group of holes at each end are in communication with the respective chambers 3, 5.
  • An annular spacer in the form of a tube 20 is removably mounted in the opening 7 and defines an opening 23 of reduced cross-section as compared with that of the opening 7.
  • the spacer is conveniently a push fit into the inside of the tube 9.
  • One end of the mould tube is sealed into an aperture in an end plate 31 which is removably bolted to one end of the housing structure.
  • the other end of the mould tube has an outwardly extending flange 33 which is bolted to an end plate which, in turn, is removably bolted to the other end of the housing structure.
  • the longitudinal axis of the mould passage is coincident with the longitudinal axis of the opening 7.
  • the outer surface of the mould tube is spaced apart from the spacer 20 which surrounds it to form a duct 28 between them.
  • the housing structure provides cooling for the molten metal passed through the mould tube.
  • liquid coolant usually water
  • water is supplied to the chamber 3 from where it flows out through the openings 17 at the adjacent end of the structure into contact with the outer surface of the mould tube and the spacer.
  • Some of the water passes along the duct 28, along the length of the outside of the mould tube and through further openings 17 at the opposite end of the structure into the chamber 5, from where it flows to drain. There is, therefore, a continuous flow of cooling water in contact with the outer surface of the mould tube.
  • some of the cooling water which is supplied to the chamber 3 passes through openings in the flange 11 and into the enclosure 15 and out from the enclosure through a further outlet port 35.
  • Figure 3 shows an alternative form of the continuous casting mould in which a casting of a much smaller cross-section than that shown in Figures 1 and 2 is required.
  • the annular spacer and the mould tube shown in Figures 1 and 2 are removed with the end plates 31, 34.
  • a new spacer 41 is pushed into the tube 9 and a second mould tube 43 is located in the opening through the housing structure and held in position by new end plates 45, 47.
  • the longitudinal axis of the mould tube is still coincident with the longitudinal axis of the opening provided by the housing structure.
  • the cooling means provided in the housing remain and a large part of the water from the chamber flows along the duct 28 and into the chamber 5.
  • the cross-section of the duct in the arrangement of Figure 3 is substantially as the cross-section of the duct in the arrangements of Figures 1 and 2.
  • the horizontal continuous casting mould of this invention may incorporate electro-magnetic stirring of the molten metal passed through the mould tube.
  • the solidifying casting is withdrawn from the mould tube using a push-pull cycle withdrawal pattern and this may bring about a surface defect on the produced casting, known as a cold shut crack, a witness mark or a ghost line.
  • a surface defect on the produced casting known as a cold shut crack, a witness mark or a ghost line.
  • electric coils indicated by the broken line in Figure 2
  • the spacer 20 is of magnetically transparent material.
  • the material can be caused to give either linear or rotational stirring of the liquid core in the mould tube.
  • differential stirring intensity can be applied along the length of the horizontal mould in order to effect the solidification rate of the skin at any point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Continuous Casting (AREA)

Claims (4)

1. Gießform zum Horizontalstranggießen, mit einer Gehäusestruktur (1); einem Formrohr (25, 43), welches einen Formkanal (27) bildet und auswechselbar in der Gehäusestruktur angebracht ist, wobei die Längsachse des Formkanals im wesentlichen horizontal liegt; einem in der Gehäusestruktur befestigten Abstandsteil (20, 41), welches das Formrohr umgibt und zusammen mit diesem einen Kanal (28) zwischen der Außenseite des Formrohres und der Innenseite des Abstandsteils definiert; Mitteln, die einen den Kanal (28) enthaltenden Weg zum Durchleiten von flüssigem Kühlmittel bilden; Mitteln innerhalb der Gehäusestruktur, die einen Ringraum (15) bilden, der das Formrohr (25, 43) umgibt;
dadurch gekennzeichnet, daß
Mittel einen den Ringraum (15) enthaltenden Weg zum Durchleiten von flüssigem Kühlmittel bilden, wobei die Wege einen gemeinsamen Einlaß und separate Auslässe für die Kühlflüssigkeit haben; und daß das Abstandsteil (20, 41) auswechselbar in einem Rohr (9) angebracht ist, welches die Innenwand des Ringraumes (15) bildet und für jede Größe von Formrohr ein anderes, entsprechend bemessenes Abstandsteil verwendet wird, so daß der Querschnitt des Kanals (28) im wesentlichen gleich bleibt.
2. Gießform zum Horizontalstranggießen nach Anspruch 1, dadurch gekennzeichnet, daß das Formrohr von einem Paar Stirnplatten (31, 34) getragen wird, die auswechselbar an der Gehäusestruktur (1) befestigt sind.
3. Gießform zum Horizontalstranggießen nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Gehäusestruktur ein Paar Kammern (3, 5) bildet und flüssiges Kühlmittel aus einer Kammer entlang der beiden Wege gedrückt wird und das durch den Kanal fließende Kühlmittel zu der anderen Kammer zurückkehrt.
4. Gießform zum Horizontalstranggießen nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß der Ringraum eine Spule zum elektromagnetischen Rühren von geschmolzenem Metall enthält, das entlang dem Formkanal geführt wird.
EP85301854A 1984-03-19 1985-03-18 Giessform zum Horizontalstranggiessen Expired - Lifetime EP0155836B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85301854T ATE35923T1 (de) 1984-03-19 1985-03-18 Giessform zum horizontalstranggiessen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848407072A GB8407072D0 (en) 1984-03-19 1984-03-19 Horizontal continuous casting moulds
GB8407072 1984-03-19

Publications (4)

Publication Number Publication Date
EP0155836A2 EP0155836A2 (de) 1985-09-25
EP0155836A3 EP0155836A3 (en) 1986-05-14
EP0155836B1 EP0155836B1 (de) 1988-07-27
EP0155836B2 true EP0155836B2 (de) 1993-01-20

Family

ID=10558303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85301854A Expired - Lifetime EP0155836B2 (de) 1984-03-19 1985-03-18 Giessform zum Horizontalstranggiessen

Country Status (4)

Country Link
EP (1) EP0155836B2 (de)
AT (1) ATE35923T1 (de)
DE (1) DE3563920D1 (de)
GB (1) GB8407072D0 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4799533A (en) * 1986-06-20 1989-01-24 Steel Casting Engineering, Ltd. Horizontal continuous casting mold
US4714103A (en) * 1986-10-10 1987-12-22 Mannesmann Demag Corporation Continuous casting mold

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321008A (en) * 1963-10-18 1967-05-23 M E A Inc Apparatus for the continuous casting of metal
US3730257A (en) * 1971-06-24 1973-05-01 Koppers Co Inc Continuous casting sleeve mold
IT1146499B (it) * 1981-07-30 1986-11-12 Danieli Off Mecc Lingottiera con cristallizzatore tubolare

Also Published As

Publication number Publication date
ATE35923T1 (de) 1988-08-15
GB8407072D0 (en) 1984-04-26
DE3563920D1 (en) 1988-09-01
EP0155836B1 (de) 1988-07-27
EP0155836A2 (de) 1985-09-25
EP0155836A3 (en) 1986-05-14

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