US3618834A - Sliding gate closure for bottom-pour vessel removable as a unit - Google Patents

Sliding gate closure for bottom-pour vessel removable as a unit Download PDF

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Publication number
US3618834A
US3618834A US827605A US3618834DA US3618834A US 3618834 A US3618834 A US 3618834A US 827605 A US827605 A US 827605A US 3618834D A US3618834D A US 3618834DA US 3618834 A US3618834 A US 3618834A
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US
United States
Prior art keywords
plate
mounting plate
submounting
gate
vessel
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Expired - Lifetime
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US827605A
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English (en)
Inventor
Earl P Shapland Jr
James T Shapland
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United States Steel Corp
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United States Steel Corp
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Publication date
Application filed by United States Steel Corp filed Critical United States Steel Corp
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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
    • B22D41/24—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 rectilinearly movable plate

Definitions

  • This invention relates to an improved slidable gate construction for use as a closure on a bottom pour vessel.
  • our gate construction is particularly useful as applied to vessels for pouring molten metal, for example a ladle or tundish.
  • vessels for pouring molten metal, for example a ladle or tundish.
  • Such vessels have an outlet in the bottom wall through which molten metal is poured into a receiving vessel.
  • a slidable gate mounted on the underside of the bottom wall for controlling flow of metal through the outlet, one example of which is shown in James T. Shapland US. Pat. No. 3,352,465.
  • the vessel carries a hydraulic operating mechanism for positioning the gate.
  • One practice is to use a reciprocable gate which has both a blank area and a nozzle, as shown in FIGS. 1 to 3 of the patent.
  • the gate is slidable back and forth between positions in which the blank area underlies the outlet to close it, or the nozzle is aligned with the outlet to permit pouring.
  • Another and usually preferred practice is to use gates of the slide-through type, each of which is either a blank or provides a nozzle, as shown in FIGS. 4 and of the patent. As the operating mechanism shoves each gate into alignment with the outlet, the new gate shoves the preceding gate on past and eventually off the vessel.
  • the bottom of the vessel has carried a fixed orifice plate secured to the vessel with a mortar seal, and the gate-mounting and -operating mechanism has been separately secured to the vessel.
  • Replacement of either the orifice plate or the gate-mounting mechanism has been an awkward operation. It has been necessary to readjust completely both the height of the rails which support the gate and the force on the springs which hold the gate against the orifice plate. These operations must be conducted with the parts installed on the vessel.
  • An object of our invention is to provide an improved gate construction, applicable to either the reciprocating type or the slide-through type, in which the orifice plate and the gate support form a unitary assembly easily installed on a vessel or removed therefrom.
  • a further object is to provide a gate construction of the foregoing type, the rails and springs of which can be adjusted accurately before installation on a vessel.
  • a further object is to provide a gate-supporting mechanism which includes independently adjustable multiple levers for supporting the gates to assure a tight seal and compensate for warpage, thereby effectively preventing formation of fins.
  • FIG. I is a top plan view, with parts broken away, of a slidable gate and operating mechanism therefor in accordance with our invention.
  • FIG. 2 is a vertical longitudinal section on line II-II of FIG. I, but showing the mechanism mounted on a pouring vessel;
  • FIG. 3 is a vertical cross section on line III-III of FIG. 1;
  • FIG. 4 is a vertical cross section on line IVIV of FIG. 1;
  • FIG. 5 is a vertical cross section on line V-V of FIG. 1;
  • FIG. 6 is a vertical section similar to FIG. 4, but showing a modification.
  • FIG. 2 shows a portion of a bottom-pour vessel 10 which has a metal shell 12 and a refractory lining 13.
  • the bottom wall of vessel 10 has an outlet opening within which a nozzle 14 is mounted.
  • Our gate construction includes a metal submounting plate 15, which encompasses the lower end of the nozzle and which we attach to the bottom of the vessel with plurality of screws 16.
  • Plate 17 supports rectangular fixed orifice plate 19, which has an orifice 20 forming a continuation of the nozzle opening (FIGS. 4 and 5).
  • the orifice plate if formed of a suitable refractory, but has a throwaway metal frame 21.
  • the upper face of the mounting plate 17 has a rectangular opening 23 and upwardly facing shoulders 24 around the perimeter of this opening to receive and support the orifice plate I9.
  • Fixed to the mounting plate 17 are a pair of opposed depending entrance rails 25, exit rails 26, and two sets of spring housings 27 located at opposite sides of the orifice plate 19 in the space between the ends of the entrance and exit rails. Preferably we weld the rails and spring housings to the plate to form a single integral part.
  • each housing contains a respective compression spring 30.
  • the lower end of each spring 30 bears downwardly against the outboard end of a different lever 28.
  • the upper ends of springs 30 bear against plate 31.
  • the mounting plate 17 has longitudinal passages 34 which communicate with the spring housings 27 through cross passages 35. We connect air lines 36 to passages 34 and introduce air to the springs via the passages to prevent their overheating.
  • FIG. 6 shows a modification in which we replace the spring housings with hydraulic cylinders 38.
  • These cylinders contain vertically movable pistons 39, the lower ends of which bear against the outboard ends of the respective levers 28.
  • Cylinder heads 40 and packing rings 41 encircle the pistons and provide a seal.
  • the modified structure is similar to that already described; hence we have not repeated the description.
  • the submounting plate 15 has an extension 46, preferably formed integrally therewith.
  • a double-acting fluid pressurecylinder 47 to the underside of extension 46 with brackets 48.
  • the cylinder has the usual connections (not shown) for admitting and discharging motivating fluid, and it contains a reciprocable piston and piston rod 49.
  • the outer end of the piston rod carries a ram 50 horizontally aligned with the space between the entrance rails 25.
  • Conventionally plates 53 may be welded to the extension and bolted to the shell, whereby they can be removed from the vessel with the submounting plate 15.
  • the inner faces of plates 53 carry respective angle irons 54, which slope downwardly toward the vessel and together form a chute for loading nozzle gates 55 and blank gates 56 onto the entrance rails 25.
  • the submounting plate 15 has an opening 57 at the lower end of the chute through which the gates drop to the rails.
  • the orifice plate 19 is an item which requires frequent replacement. In our construction this plate occupies a fixed position with respect to the mounting plate 17. Consequently there is no need to readjust the compressive force of springs 30 every time we replace the orifice plate. To remove an orifice plate, it is necessary only to remove the four screws 18 which attach the mounting plate 17 to the submounting plate 15. The thickness of the mortar layer or gasket 22 may vary each time, but this variation does not affect the relative position of the orifice plate and mounting plate. However, the springs 30 are individually adjustable to compensate for warpage.
  • a submounting plate fixed to the underside of said vessel and having an opening beneath said nozzle
  • a mounting plate removably fixed to the underside of said submounting plate and having an opening beneath said nozzle and horizontally spaced upwardly facing shoulders at the perimeter of the last-named opening;
  • gate-supporting means carried by said mounting plate on its underside
  • said orifice plate being removable from said last-named opening from above when said mounting plate is removed from said submounting plate without disturbing the position of said gate-supporting means relative to said mounting plate.
  • a closure mechanism for a nozzle in the bottom wall of a vessel said mechanism being formed as a unitary assembly and comprising:
  • a submounting plate adapted to be fixed to the underside of the vessel and having an opening adapted to be positioned beneath the nozzle
  • a mounting plate removably fixed to the underside of said submounting plate and having an opening beneath said first-named opening and horizontally spaced upwardly facing shoulders at the perimeter of said last-named opening;
  • said orifice plate being removable from said last-named opening from above on removal of said mounting plate from said submounting plate without disturbing the position of said gate-supporting means relative to said mounting plate.
  • said gatesupporting means includes an opposed pair of entrance rails depending from said mounting plate, an opposed pair of exit rails depending from said mounting plate and being ali ned with and spaced from said entrance rails, a plurality o opposed pairs of levers of the first class pivoted to the underside of said mounting plate in the space between the ends of said entrance rails and said exit rails, and spring means urging the outboard ends of said levers downwardly, said spring means being adjustable individually before said mounting plate is installed on said vessel and permitting the position of adjustment to be maintained despite variations in the position of said orifice plate relative to said nozzle.
  • said submounting plate includes an extension lying outside the bottom of said vessel, and comprising in addition a chute supported above said extension for loading gates on said entrance rails.
  • a combination as defined in claim 4 comprising in addition means in said mounting plate for introducing air to said spring means to cool the latter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
  • Closing Of Containers (AREA)
US827605A 1969-05-26 1969-05-26 Sliding gate closure for bottom-pour vessel removable as a unit Expired - Lifetime US3618834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82760569A 1969-05-26 1969-05-26

Publications (1)

Publication Number Publication Date
US3618834A true US3618834A (en) 1971-11-09

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ID=25249654

Family Applications (1)

Application Number Title Priority Date Filing Date
US827605A Expired - Lifetime US3618834A (en) 1969-05-26 1969-05-26 Sliding gate closure for bottom-pour vessel removable as a unit

Country Status (8)

Country Link
US (1) US3618834A (enrdf_load_stackoverflow)
JP (1) JPS4931411B1 (enrdf_load_stackoverflow)
BE (1) BE750763A (enrdf_load_stackoverflow)
DE (1) DE2024829B2 (enrdf_load_stackoverflow)
ES (1) ES380009A1 (enrdf_load_stackoverflow)
FR (1) FR2043660B1 (enrdf_load_stackoverflow)
GB (1) GB1322341A (enrdf_load_stackoverflow)
NL (1) NL165961C (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685705A (en) * 1971-03-24 1972-08-22 James W Cessna Sliding gate valve having spring biased slide
US3765579A (en) * 1972-05-10 1973-10-16 United States Steel Corp Linearly movable gate mechanism
US3779424A (en) * 1972-02-23 1973-12-18 United States Steel Corp Operating mechanisms and method for slidable-gate closures
US3866806A (en) * 1973-03-01 1975-02-18 United States Steel Corp Operating mechanism for slidable gates and method of operating slide gate
US3877675A (en) * 1974-02-13 1975-04-15 James T Shapland Seal construction and method of forming seal between two abutting surfaces
DE2652732A1 (de) * 1975-11-26 1977-06-08 Kurosaki Refractories Co Verfahren zum aufbringen eines gewuenschten abdichtungsdruckes zwischen feuerfesten platten eines schiebe-giessstutzens
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
US4220270A (en) * 1978-03-21 1980-09-02 Vesuvius International Corporation Flow control device for molten metal
US5465777A (en) * 1994-05-18 1995-11-14 The Budd Company Contact pouring

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2167251C2 (de) * 1971-12-10 1982-07-29 Stopinc AG, 6340 Baar Schieberverschluß am Ausguß von metallische Schmelze enthaltenden Gefäßen
JPS6045030B2 (ja) * 1979-04-13 1985-10-07 日本鋼管株式会社 扉式ロ−タリ−ノズル
US5139237A (en) * 1988-01-15 1992-08-18 Stopinc Ag Metal member with annular centering surface

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1155082A (fr) * 1955-08-12 1958-04-22 Fonderia E Officina Meccanica Dispositif de coulée pour poches de coulée de métaux fondus, en particulier d'aciers et de métaux précieux
FR1460686A (fr) * 1964-09-22 1966-01-07 Obturateur coulissant pour poche de coulée
US3352465A (en) * 1965-05-06 1967-11-14 United States Steel Corp Refractory closure member for bottom pour vessels

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685705A (en) * 1971-03-24 1972-08-22 James W Cessna Sliding gate valve having spring biased slide
US3779424A (en) * 1972-02-23 1973-12-18 United States Steel Corp Operating mechanisms and method for slidable-gate closures
US3765579A (en) * 1972-05-10 1973-10-16 United States Steel Corp Linearly movable gate mechanism
US3866806A (en) * 1973-03-01 1975-02-18 United States Steel Corp Operating mechanism for slidable gates and method of operating slide gate
US3877675A (en) * 1974-02-13 1975-04-15 James T Shapland Seal construction and method of forming seal between two abutting surfaces
DE2652732A1 (de) * 1975-11-26 1977-06-08 Kurosaki Refractories Co Verfahren zum aufbringen eines gewuenschten abdichtungsdruckes zwischen feuerfesten platten eines schiebe-giessstutzens
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
US4220270A (en) * 1978-03-21 1980-09-02 Vesuvius International Corporation Flow control device for molten metal
US5465777A (en) * 1994-05-18 1995-11-14 The Budd Company Contact pouring

Also Published As

Publication number Publication date
DE2024829A1 (de) 1970-12-03
FR2043660B1 (enrdf_load_stackoverflow) 1974-03-01
ES380009A1 (es) 1972-08-01
GB1322341A (en) 1973-07-04
JPS4931411B1 (enrdf_load_stackoverflow) 1974-08-21
NL165961B (nl) 1981-01-15
FR2043660A1 (enrdf_load_stackoverflow) 1971-02-19
BE750763A (fr) 1970-11-23
NL165961C (nl) 1981-06-15
NL7007542A (enrdf_load_stackoverflow) 1970-11-30
DE2024829B2 (de) 1977-11-10

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