US3287770A - Multiple-billet mold - Google Patents

Multiple-billet mold Download PDF

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Publication number
US3287770A
US3287770A US347161A US34716164A US3287770A US 3287770 A US3287770 A US 3287770A US 347161 A US347161 A US 347161A US 34716164 A US34716164 A US 34716164A US 3287770 A US3287770 A US 3287770A
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United States
Prior art keywords
mold
hollow
spaces
billet
channels
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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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US347161A
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English (en)
Inventor
Schrewe Hans
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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Publication date
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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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • B22D11/0403—Multiple moulds
    • 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
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting

Definitions

  • the invention relates to continuous metal casting, and relates more particularly to means for improving the grain structure and surface properties of the castings made in multiple-billet molds. Still more particularly, lthe invention relates to multiple-billet molds which are so constructed as to promote the aforesaid improvements in grain structure and surface properties of the castings.
  • continuous casting includes not only continuous casting but also the art of semi-continuous casting.
  • It is a further object of the invention lto provide such a mold with interconnecting channels between the adjoining hollow mold spaces in such a manner that the channels will be disposed eccentrically of the centers of the hollow spaces.
  • FIG. 1 is a plan View of a multiple-billet mold, for squa-red square billets
  • FIG. 2 is a -plan view similar to FIG. l, but embodying a modification
  • FIG. 3 is ⁇ a .plan view of a multiple-billet mold for square billets, placed diagonally;
  • FIG. 4 is a plan View similar to FIG. 3, lbut with one of the hollow spaces off-set from the others;
  • FIG. 5 is a plan view of a multiple-'billet mold for round billets
  • FIG. 6 is a plan View similar to FIG. 5, a modification
  • FIG. 7 is a fragmentary Vschematic rear elevational view, partly in section, of a machine for the continuous casting of multiple billets.
  • FIG. 8 is a ⁇ fragmentary schematic side elevational view, partly in section, of lthe Imachine shown in FIG. 7.
  • FIG. l there is shown a mold for the ycontinuous casting of multiple billets; the mold has a body which includes two parts 1a and 1b that are joined alonlg a major vertical plane, for example the central vertical dividing plane of the mold.
  • a plurality of hollow mold spaces 2 are provided, five -of these ha-ving 'been chosen flor illustration in FIG. l, which are designated 2a, 2b, 2c, ,2d and 2a.
  • the spaces have substantially square cross-sections, and are squared in relation to the aforesaid .central mold plane.
  • FIGS. 1-4 the open mol-d spaces for the billets are shown, and described herein below, as having substantially square cross-sections.
  • FIGS. 5 and 6 on the other hand, hollow mold but embodying spaces are shown that have substantially circular crosssections.
  • cross-sections shown were chosen only as illustrative, for the sake of simplicity and clarity, and that instead other prisrnatic or regular or irregular solid or hollow polygonal shapes may be chosen, or shapes with other round cross-sections, including annular or elliptical spaces, for the casting of solid or hollow sections, and also for the casting of mixed hollow-andsolid sections within one multi-ple lbillet, all without departing from the scope of ythe invention save as restricted in the claims hereof.
  • Each two adioining hollow spaces are interconnected lby means of channels 3 which extend for at least a fraction of, and may extend throughout, the height of the mold.
  • the discharge mouth of each channel 3 is disposed in a corner of each of the two adjoining hollow spaces that are interconnected .by said channel; the axis of the dischange mouth of each channel 3 is disposed substantially parallel to one of the sides 4 of the square hollow mold space and at ri-ght angle to the aforesaid central plane of the mold.
  • the length of the channel 3 is best so chosen that the loss of material during the subsequent severing of the lbillets can :be kept las small as possible.
  • the width of fthe channels 3 should 'be in relation to the size of the crosssection of the over-all hollow mold space of the feeding head, respectively, to the casting production capacity tfor the individual billets that adjoin the channels.
  • the liquid metal may 4be discharged, for instance into lthe central hollow mold space 2a, and from there the liquid rmetal will proceed through the channels 3 into the two hollow spaces 2b and 2c. -From here the metal will iiow into the outermost hollow spaces 2d and 2e, respectively.
  • the broken line x indicates the ow path of the molten metal 'within the mold, and illustrates ⁇ the rotational movement which is generated by ⁇ that il-ow in the feeding head of ⁇ the mold.
  • the substantially square hollow spaces 2 are again arranged similar to the arrangement of FIG. 1; but 'the axes of the connecting channels 3 are aligned with the aforesaid vertical central plane of the mold.
  • the operation is similar -to that described inv connection with FIG. 1.
  • the square hollow spaces 2 are arranged in two rows on Ibo-th sides of the aforesaid central plane yof the mold, showing a total of ve hollow spaces 2. It will the understood, however, that either fewer lor more than iive hollow spaces may Ibe used. It will be furthermore be understood that the number off hollow spaces shown in FIGS. 3-6 are also merely illustrative and not intended -to be restrictive. Lastly, all of the molds are shown vertically straight; it will fbe understood, however, that the instant invention is equally .applicable to multiple-billet molds of the curved type used for the purpose of shifting the descending billet to the horizontal plane.
  • the hollow substantially square spaces 2 are no longer squared with the central plane of the mold, but are arranged diagonally along the central plane; only three hollow spaces 2a, 2b and 2c are shown which are interconnected in series lby the channels .3.
  • FIG. 5 there is shown a multiple-billet mold 1 for round billets of substantially circularNcross-section.
  • the arrangement is similar to that of FIG. 3, except that the channels 3 interconnect the circular hollow space'sw2 ⁇ , for instance in series, substantially tangentially. While the axes 5 of the channels 3 have been shown in FIG. 5 irl A formation, wherein the axes 5 intersect at an angle, these axes may instead be parallel; where the axes 5 intersect, a preferred arrangement is that they intersect at an angle of about
  • the arrangement of the channels 3 should be so chosen that, depending which of the spaces 2 receives the liquid metal first, the sense of rotation of the lbath in the other hollow spaces to which the liquid hows will alternate.
  • the liquid metal is first poured into the left space 2, and proceeds thence into the middle space where it generates a clockwise bath movement. From the middle space 2 the liquid proceeds into the right space 2 where it generates a counterclockwise movement in the .metal bath.
  • FIG. 6 there is shown a three-part mold 1 which defines a central hollow space 2 and -four hollow spaces 2 which are arranged along the lcorners of a square with the central hollow space disposed in the center of that square. Channels 3 again connect the Various hollow spaces, substantially tangentially.
  • the arrangement of FIG. 6 is symmetrical.
  • the instant invention for example also provides for the simultaneous casting of almultiple billet, with a solid round billet as the central section and, for instance, two hollow round billets as the side sections.
  • the casting machine schematicallyV illustrated in FIGS. 7 and 8 shows a ladle 6 below which there is arranged a tundish 7. Below the tundish 7 there is disposed a multiple-billet mold 9 which is supported on an upper machine stage 8. Three round interconnected billets 10 are cast in the machine, similar to the arrangement shown in FIG. 5, and the emerging multiple-billet 10 is engaged by withdrawal rolls 11.
  • a multiple-billet mold for the continuous casting of metal comprising a mold body defining a plurality of hollow spaces extending throughout the height of the mold body and being open at the top and bottom and forming passages for the continuously cast metal and channels connecting for interior intercommunication each hollow space with at least one other hollow space, said channels extending throughout at least a fraction of the height of the mold, whereby there will lbe continuously cast a single casting each channel being disposed eccentrically relative to the hollow space with which it communicates.
  • each hollow space having a polygonal shape, each channel being connected to the corner portion of the hollow space with which it communicates and extending in a direction parallel to one side of the polygonal shape thereof.
  • a multiple-billet mold as claimed in claim 1, said hollow spaces being round, each channel leading substantially tangentially into the respective hollow spaces with which it communicates.
  • a multiple-billet mold as claimed in claim 1, said hollow spaces being aligned along a Vertical plane of the mold body.
  • a multiple-billet mold as claimed in claim 1, said hollow spaces being arranged in two rows oil-set from each other about a vertical plane of the mold body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
US347161A 1963-02-28 1964-02-25 Multiple-billet mold Expired - Lifetime US3287770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0055938 1963-02-28

Publications (1)

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US3287770A true US3287770A (en) 1966-11-29

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Country Status (6)

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US (1) US3287770A (pl)
AT (1) AT241037B (pl)
BE (1) BE644051A (pl)
DE (1) DE1458097A1 (pl)
GB (1) GB1027916A (pl)
LU (1) LU45398A1 (pl)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1299148A (en) * 1917-12-24 1919-04-01 Frederick J Droege Apparatus for casting steel ingots.
US1533067A (en) * 1924-03-26 1925-04-07 Mcnelly Harry Sprue plate for ingot molds
US2871530A (en) * 1955-09-12 1959-02-03 Wieland Werke Ag Continuous casting mold, its manufacture and use
FR1339997A (fr) * 1962-11-28 1963-10-11 Centre Nat Rech Metall Dispositif pour la coulée continue des métaux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1299148A (en) * 1917-12-24 1919-04-01 Frederick J Droege Apparatus for casting steel ingots.
US1533067A (en) * 1924-03-26 1925-04-07 Mcnelly Harry Sprue plate for ingot molds
US2871530A (en) * 1955-09-12 1959-02-03 Wieland Werke Ag Continuous casting mold, its manufacture and use
FR1339997A (fr) * 1962-11-28 1963-10-11 Centre Nat Rech Metall Dispositif pour la coulée continue des métaux

Also Published As

Publication number Publication date
BE644051A (pl) 1964-06-15
AT241037B (de) 1965-06-25
GB1027916A (en) 1966-04-27
DE1458097A1 (de) 1968-11-28
LU45398A1 (pl) 1964-04-11

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