US3786969A - Sliding-gate closure construction for bottom-pour vessels - Google Patents

Sliding-gate closure construction for bottom-pour vessels Download PDF

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Publication number
US3786969A
US3786969A US00244518A US3786969DA US3786969A US 3786969 A US3786969 A US 3786969A US 00244518 A US00244518 A US 00244518A US 3786969D A US3786969D A US 3786969DA US 3786969 A US3786969 A US 3786969A
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United States
Prior art keywords
gate
top plate
convex
face
improvement
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Expired - Lifetime
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US00244518A
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English (en)
Inventor
C Kelly
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United States Steel Corp
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Steel Corp
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Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
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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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/26—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings characterised by a rotatively movable plate

Definitions

  • ABSTRACT A slidable gate construction for use as a closure on a bottom-pour vessel, such as a ladle or tundish used for pouring liquid metal.
  • the novel feature is that the upper face of the gate is convex when viewed in cross section.
  • the underface of the top plate has a mating concave face.
  • This invention relates to an improved slidable gate construction for use as a closure on a bottom-pour vessel.
  • my gate construction is particularly useful as applied to vessels for pouring liquid metal, for example a ladle or a tundish.
  • Such vessels have an outlet in the bottom wall through which liquid metal is poured into a receiving vessel.
  • Gates used heretofore have had flat upper surfaces, at least initially. Sometimes the gate may warp in use and acquire a curvature, but this is unintentional.
  • Shapland Reissue U.S. Pat. No. 27,237 and several later patents on improvements thereto show spring-pressed levers which engage the bottom of the gate along its side edges.
  • Shapland application Ser. No. 150,585, filed June 7, 1971 shows an arrangement of coil springs surrounding the vessel outlet.
  • Grosko et al. U.S. Pat. No. 3,604,603 shows inflated flexible tubes which engage the bottom of the gate along its side edges.
  • Others such as Fichera U.S. Pat. No. 3,454,201, omit the springs altogether and hold the gate rigidly as with screws.
  • the flat gate leads to disadvantages with any of these arrangements.
  • An object of the present invention is to provide improved slidable gate construction in which the mating surfaces of the gate and top plate are convex and concave respectively to overcome the disadvantages of flat gates and top plates.
  • FIG. 1 is a cross-sectional view of the bottom portion of a vessel equipped with a top plate and slidable gate constructed in accordance with my invention
  • FIG. 2 is a diagrammatic longitudinal sectional view of the top plate and gate on line II-II of FIG. 1;
  • FIG. 3 is a diagrammatic cross-sectional view of the top plate and gate
  • FIG. 4 is a diagrammatic cross-sectional view similar to FIG. 3, but showing a modification.
  • FIG. 1 shows a portion of a conventional bottompour vessel 10.
  • a top plate 12 and a slidable gate 13 constructed in accordance with my invention and hereinafter described are mounted beneath the bottom wall of the vessel to control flow of material therefrom.
  • the support means for the top plate and gate can be any of various known types.
  • the means illustrated includes a mounting plate 14 fixed to the bottom of the vessel, hinge brackets 15 depending from the mounting plate, and a frame 16 hinged at one side to the brackets.
  • the opposite side of frame 16 is attached to the mounting plate 14 with bolts 17.
  • the bolt heads can be disengaged from the mounting plate by rotating the bolts a quarter turn. This construction enables frame 16 to swing downwardly, whereby the top plate and gate can be removed and replaced readily.
  • Frame 16 carries rails 18 on which gate 13 is slidably supported along its opposite side edges.
  • the bolts 17 carry compression springs 19 which urge the frame, rails, gate and top plate upwardly into a close-fitting relation.
  • the top plate has the usual orifice 20 aligned with the vessel outlet, and is held in place by any suitable means (not shown) engaging its side and end edges.
  • Gate 13 is shown as having an orifice 21 and a depending nozzle 22.
  • the gate and nozzle are formed of a refractory body encased in a metal frame.
  • the gate illustrated is of the reciprocating type, in which a solid portion of its area can be moved into alignment with the orifice 20 to close off flow.
  • the gate may be of the slide-through type which is replaced by a blank to close off flow.
  • the gate is equipped with conventional hydraulic means or the like (not shown) to propel it along the rails, as shown in the patents hereinbefore referred to.
  • the upper face of gate 13 is convex when viewed in cross section, that is, in a plane which extends at right angles to the direction it travels-in opening and closing, as best shown in FIG. 2.
  • the underface of the top plate 12 is concave to mate with the convex face of the gate.
  • the bottom face of the gate is essentially flat except for the nozzle 22.
  • the convex and concave faces are formed on arcs of equal radii R.
  • FIG. 4 shows a modification in which concave surface of the top plate 1211 has a larger radius R than the radius R of the convex surface of the gate 13a.
  • the convex arc of the gate would be a parabola, since a parabola would afford maximum strength and resistance to deflection. Since a parabolic surface is too difficult to construct, I prefer to compromise by forming the convex surface on a circular arc.
  • the radius of the arc is in the range of about 6 to 24 inches.
  • a slidable gate closure construction for controlling discharge of liquid metal from a ladle or a tundish having an outlet in its bottom wall, which construction includes a refractory top plate having an orifice aligned with said outlet, a refractory gate abutting the underside of said top plate and slidable with respect thereto to open and close said orifice, and means engaging said gate along its side edges for supporting both said top plate and said gate on the underside of a vessel, the improvement in which the upper face of said gate is convex as viewed in a cross section taken in a plane transversely of the direction of gate travel, and appears straight as viewed in a longitudinal section taken in a plane parallel with the direction of gate travel, and said top plate has a mating concave lower face, whereby forces applied to the gate along its side edges are effectively transmitted to the mid portion of the gate where v in the range of about 6 to 24 inches.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Saccharide Compounds (AREA)
  • Agricultural Machines (AREA)
US00244518A 1972-04-17 1972-04-17 Sliding-gate closure construction for bottom-pour vessels Expired - Lifetime US3786969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24451872A 1972-04-17 1972-04-17

Publications (1)

Publication Number Publication Date
US3786969A true US3786969A (en) 1974-01-22

Family

ID=22923085

Family Applications (1)

Application Number Title Priority Date Filing Date
US00244518A Expired - Lifetime US3786969A (en) 1972-04-17 1972-04-17 Sliding-gate closure construction for bottom-pour vessels

Country Status (19)

Country Link
US (1) US3786969A (is")
JP (1) JPS5131016B2 (is")
AR (1) AR198210A1 (is")
AT (1) AT323355B (is")
BE (1) BE798306A (is")
BR (1) BR7302670D0 (is")
CA (1) CA986302A (is")
DE (1) DE2318524B2 (is")
DK (1) DK129772B (is")
ES (1) ES413768A1 (is")
FI (1) FI54683C (is")
FR (1) FR2180727B1 (is")
GB (1) GB1389171A (is")
IE (1) IE37479B1 (is")
IT (1) IT984468B (is")
NL (1) NL7305226A (is")
NO (1) NO135698C (is")
SU (1) SU503547A3 (is")
ZA (1) ZA732150B (is")

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056217A (en) * 1975-04-24 1977-11-01 Snac S.P.A. Refrattari Argille E Caolini Sliding gate valve for molten metal with adjustable plates
US4116372A (en) * 1975-11-26 1978-09-26 Kurosaki Refractories Co., Ltd. Apparatus for applying a desired sealing pressure between refractory plates of sliding nozzle
US4421256A (en) * 1981-10-02 1983-12-20 United States Steel Corporation Sliding gate valve having adjustable seal pressure
US4577785A (en) * 1979-04-13 1986-03-25 Nippon Kokan Kabushiki Kaisha Hinged rotary nozzle
US5836485A (en) * 1996-07-18 1998-11-17 Stopinc Ag Sliding gate valve assembly for a vessel containing molten metal
US8714466B2 (en) 2003-04-02 2014-05-06 Elkhart Brass Manufacturing Company, Inc. Fire-fighting monitor with remote control

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143750A (en) * 1977-11-04 1979-03-13 Coin Acceptors, Inc. Serration detector
GB2053431B (en) * 1979-07-17 1983-08-10 Vesuvius Int Corp Supporting refractory plates of sliding
DE3403522A1 (de) * 1984-02-02 1985-08-14 Metacon AG, Zürich Feuerfeste verschleissteile fuer schieberverschluesse
JPH0335481Y2 (is") * 1984-09-11 1991-07-26

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US427635A (en) * 1890-05-13 Sirup jar or bottle
US1960393A (en) * 1934-01-15 1934-05-29 Arthur H Otten Collapsible tube
US2265154A (en) * 1940-05-23 1941-12-09 American Can Co Container pouring spout
US2791814A (en) * 1954-04-20 1957-05-14 Villela Oscar Ladle nozzle and stopper construction
US2916190A (en) * 1957-03-13 1959-12-08 Hans H Furn Container closure and dispensing device
US3228574A (en) * 1963-12-13 1966-01-11 Sweden Freezer Mfg Co Serving gate for dispensing freezer
US3409189A (en) * 1967-02-13 1968-11-05 Robert C. Mckeand Jr. Container closure
US3436023A (en) * 1965-03-09 1969-04-01 Concast Ag Apparatus for altering the position of a jet of molten metal,especially for continuous casting machines
US3623541A (en) * 1969-10-29 1971-11-30 William L Schmitz Metal casting apparatus
US3685707A (en) * 1970-05-01 1972-08-22 United States Steel Corp Sliding-gate closure for bottom-pour vessel
US3685705A (en) * 1971-03-24 1972-08-22 James W Cessna Sliding gate valve having spring biased slide

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE36369B1 (en) * 1971-06-07 1976-10-13 Uss Eng & Consult Ladle gate valve

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US427635A (en) * 1890-05-13 Sirup jar or bottle
US1960393A (en) * 1934-01-15 1934-05-29 Arthur H Otten Collapsible tube
US2265154A (en) * 1940-05-23 1941-12-09 American Can Co Container pouring spout
US2791814A (en) * 1954-04-20 1957-05-14 Villela Oscar Ladle nozzle and stopper construction
US2916190A (en) * 1957-03-13 1959-12-08 Hans H Furn Container closure and dispensing device
US3228574A (en) * 1963-12-13 1966-01-11 Sweden Freezer Mfg Co Serving gate for dispensing freezer
US3436023A (en) * 1965-03-09 1969-04-01 Concast Ag Apparatus for altering the position of a jet of molten metal,especially for continuous casting machines
US3409189A (en) * 1967-02-13 1968-11-05 Robert C. Mckeand Jr. Container closure
US3623541A (en) * 1969-10-29 1971-11-30 William L Schmitz Metal casting apparatus
US3685707A (en) * 1970-05-01 1972-08-22 United States Steel Corp Sliding-gate closure for bottom-pour vessel
US3685705A (en) * 1971-03-24 1972-08-22 James W Cessna Sliding gate valve having spring biased slide

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056217A (en) * 1975-04-24 1977-11-01 Snac S.P.A. Refrattari Argille E Caolini Sliding gate valve for molten metal with adjustable plates
US4116372A (en) * 1975-11-26 1978-09-26 Kurosaki Refractories Co., Ltd. Apparatus for applying a desired sealing pressure between refractory plates of sliding nozzle
US4233718A (en) * 1975-11-26 1980-11-18 Kurosaki Refractories Co. Ltd. Method for applying a desired sealing pressure between refractory plates of sliding nozzle
US4577785A (en) * 1979-04-13 1986-03-25 Nippon Kokan Kabushiki Kaisha Hinged rotary nozzle
US4421256A (en) * 1981-10-02 1983-12-20 United States Steel Corporation Sliding gate valve having adjustable seal pressure
US5836485A (en) * 1996-07-18 1998-11-17 Stopinc Ag Sliding gate valve assembly for a vessel containing molten metal
US8714466B2 (en) 2003-04-02 2014-05-06 Elkhart Brass Manufacturing Company, Inc. Fire-fighting monitor with remote control
USRE48069E1 (en) 2003-04-02 2020-06-30 Elkhart Brass Manufacturing Company, Llc Fire-fighting monitor with remote control

Also Published As

Publication number Publication date
JPS5131016B2 (is") 1976-09-04
DE2318524A1 (de) 1973-10-31
NL7305226A (is") 1973-10-19
ZA732150B (en) 1974-06-26
JPS4917320A (is") 1974-02-15
BR7302670D0 (pt) 1974-06-27
FI54683C (fi) 1979-02-12
NO135698C (is") 1977-05-16
IE37479B1 (en) 1977-08-03
BE798306A (fr) 1973-10-16
AT323355B (de) 1975-07-10
IE37479L (en) 1973-10-17
SU503547A3 (ru) 1976-02-15
DE2318524B2 (de) 1977-11-17
FR2180727A1 (is") 1973-11-30
ES413768A1 (es) 1976-01-16
DK129772C (is") 1975-04-28
FR2180727B1 (is") 1976-09-10
AR198210A1 (es) 1974-06-07
IT984468B (it) 1974-11-20
FI54683B (fi) 1978-10-31
GB1389171A (en) 1975-04-03
CA986302A (en) 1976-03-30
DK129772B (da) 1974-11-18
NO135698B (is") 1977-02-07

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AS Assignment

Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960

Effective date: 19880112