US2741816A - Wiper ring mountings for hot tops - Google Patents

Wiper ring mountings for hot tops Download PDF

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Publication number
US2741816A
US2741816A US425231A US42523154A US2741816A US 2741816 A US2741816 A US 2741816A US 425231 A US425231 A US 425231A US 42523154 A US42523154 A US 42523154A US 2741816 A US2741816 A US 2741816A
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ring
casing
wiper
hot top
clips
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US425231A
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Jr Herbert A White
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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
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/10—Hot tops therefor

Definitions

  • This invention relates to new and useful improvements in replaceable refractory rings employed with permanent hot tops of the so-called oating type, and it is among the objects thereof to provide a refractory lining ring with clips for positioning and clamping wiper strips that are located between the permanent hot top casing and the refractory lining ring, it being among the objects of the invention to provide means for quickly and accurately inserting the sheet metal wiper rings that function to close the joint between the hot top casing and the ingot mold walls.
  • Wiper strips for ingot mold hot tops have heretofore been inserted between the hot top and the refractory lining ring by providing recesses or notches in the refractory ring in which upstruck or offset portions of the wiper ring were inserted to properly locate the rings with respect to the periphery of the hot top casing.
  • the necessity for aligning the offset tabs of the wiper ring with the recesses of the refractory lining ring required adjustments and fitting and often resulted in misalignment of the rings, which are lusually constituted of segments that are assembled when the liner ring is secured to the hot top casing.
  • clamps are provided on the lining ring which extend to the periphery of the hot top casing and provide an expedient manner of inserting the wiper ring therebetween, the spring members being so located on the ring as to accurately space the wiper ring around the periphery of the hot top.
  • Figure 2 is a top plan view of a refractory ring employed as a liner beneath the hot top casing;
  • Figure 3 is an enlarged detail in cross section showing a portion of the hot top and the lining ring and showing the attaching clips and wiper ring clamps in elevation;
  • Figure 4 is a top plan view of a segment of a wiper ring.
  • Figure 5 is a vertical section of a fragment of a lining nng.
  • the numeral 1 designates a permanent hot top casing having trunnions 2 by which it is suspended when placed over an ingot mold, not shown.
  • Casing 1 is lined with refractory brick 3 that are supported on a ange 4 of the casing 1.
  • the liner 3 is renewable from time to time but need not be renewed for each use of the hot top when the metal is cast in the ingot.
  • a refractory liner 5 in the shape of a ring, as shown in Figure 2, is provided for the bottom of the casing 1 and is destroyed with every cast.
  • This ring is replaced between castings and is attached to the casing by means of a clip 6 that is fitted into ridges or holes in the casing 1 on one end and has a folded or beaded portion 7 that snaps over a shoulder or ridge 8 on the inside of the ring 5, there being four of such clips employed with the ring 5 which has four recessed portions 8 as shown in Figure 2.
  • Ring 5 has a flange portion of substantially the dimension of the lower end of the casing 1 which is spaced therefrom when the bottom ring 5 abuts the lining 3.
  • a sheet metal wiper strip 9 Disposed in the space between the bottom ring 5 and the casing 1 is a sheet metal wiper strip 9 which, as shown in Figure 4, is in segment shaped sections to facilitate assembly between the ring 5 and mold casing 1.
  • the wiper strip or ring 9 is secured in position by means of spring clamps 10 that are preferably integrally formed with the bottom ring 5 in angularly spaced relation as shown in Figure 2, to form a space for receiving the wiper ring.
  • the free end of the spring tip 10 may be slightly llared, as shown, to make it convenient to slip the inner face portion 11 of the wiper ring underneath the clip with the ared portion 12 of the ring extending upward as shown.
  • the wiper strips are inserted in position with the flared portion 12 properly spaced concentric With the ring 5 and the hot top casing 1 so that when the hot top is lowered in the ingot mold the flared portion 12 of the wiper strip will contact the inner wall of the ingot mold to provide an clfective seal.
  • the clip 10 lies in a V-shaped recess lila slightly below the face of the flange of bottom ring 5 to provide a bite for firmly gripping the wiper strip 9.
  • the metal When the metal is poured in the ingot through the hot top from a ladle suspended above, it will rise in the ingot mold and in the hot top to provide excess metal above the ingot mold for feeding the center of the ingot as the metal solidies in the mold to avoid the formation of piping. As the metal rises and envelops the Wiper strip 12 it will freeze to form a seal, thus preventing the metal from running out between the hot top and the ingot mold. When the ingot is cast the mold is removed, the ring S being broken in this operation, or it may be retained on the croppage or scrap portion of the ingot from which it is subsequently removed. If it adheres to the hot top casing 1, it is readily removed therefrom and replaced by a new ring with new wiper strips.
  • a casing having refractory lining and an attachable bottom ring of refractory material attached thereto, said ring having a flange portion spaced from the bottom of the casing and having A integrally formed metal clips with a leg extending into the body of the ring and a clamping portion overlying the flange face, and sheet metal wiper strips inserted between said clips and ange faces.
  • a casing having refractory lining and an attachable bottom ring of refractory material attached thereto, said ring having a flange portion spaced from the bottom of the casing and having a plurality of angularly spaced metal clips with a leg extending into the body of the ring and a clamping portion overlyv 3 v 4 ing the Range face, and sheet' metal Wiper strips inserted clamping portion to provide a bite, vand sheet metal wiper between saidclips and fla-nge faces Withtheinner edges strips inserted' between said clips and 'ang'e" faces with of the strips abutting the legs ofthe clips. the inner edges of the strips abutting the legs of the clips.

Description

April 17, 1956 H. A. WHITE, JR
WIPER RING MOUNTINGS FOR HOT TOPS Filed April 25, 1954 HERBERT A. WHITE, JR.
dleag.. @ja f United States Pate'nt 0 WIPER RING MOUNTINGS FOR HOT TOPS Herbert A. White, Jr., Pittsburgh, Pa.
Application April 23, 1954, Serial No. 425,231
3 Claims. (Cl. 22-147) This invention relates to new and useful improvements in replaceable refractory rings employed with permanent hot tops of the so-called oating type, and it is among the objects thereof to provide a refractory lining ring with clips for positioning and clamping wiper strips that are located between the permanent hot top casing and the refractory lining ring, it being among the objects of the invention to provide means for quickly and accurately inserting the sheet metal wiper rings that function to close the joint between the hot top casing and the ingot mold walls.
Wiper strips for ingot mold hot tops have heretofore been inserted between the hot top and the refractory lining ring by providing recesses or notches in the refractory ring in which upstruck or offset portions of the wiper ring were inserted to properly locate the rings with respect to the periphery of the hot top casing. The necessity for aligning the offset tabs of the wiper ring with the recesses of the refractory lining ring required adjustments and fitting and often resulted in misalignment of the rings, which are lusually constituted of segments that are assembled when the liner ring is secured to the hot top casing.
By means of the present invention clamps are provided on the lining ring which extend to the periphery of the hot top casing and provide an expedient manner of inserting the wiper ring therebetween, the spring members being so located on the ring as to accurately space the wiper ring around the periphery of the hot top.
The invention will become more apparent from a consideration of the accompanying drawing, constituting a part hereof, in which like reference characters designate like parts, and in which- Figure 1 is a vertical cross-sectional view, partially in elevation of a hot top structure embodying the principles of this invention;
Figure 2 is a top plan view of a refractory ring employed as a liner beneath the hot top casing;
Figure 3 is an enlarged detail in cross section showing a portion of the hot top and the lining ring and showing the attaching clips and wiper ring clamps in elevation;
Figure 4 is a top plan view of a segment of a wiper ring; and
Figure 5 is a vertical section of a fragment of a lining nng.
With reference to the several gures of the drawing, the numeral 1 designates a permanent hot top casing having trunnions 2 by which it is suspended when placed over an ingot mold, not shown. Casing 1 is lined with refractory brick 3 that are supported on a ange 4 of the casing 1. The liner 3 is renewable from time to time but need not be renewed for each use of the hot top when the metal is cast in the ingot.
A refractory liner 5 in the shape of a ring, as shown in Figure 2, is provided for the bottom of the casing 1 and is destroyed with every cast. This ring is replaced between castings and is attached to the casing by means of a clip 6 that is fitted into ridges or holes in the casing 1 on one end and has a folded or beaded portion 7 that snaps over a shoulder or ridge 8 on the inside of the ring 5, there being four of such clips employed with the ring 5 which has four recessed portions 8 as shown in Figure 2. Ring 5 has a flange portion of substantially the dimension of the lower end of the casing 1 which is spaced therefrom when the bottom ring 5 abuts the lining 3.
Disposed in the space between the bottom ring 5 and the casing 1 is a sheet metal wiper strip 9 which, as shown in Figure 4, is in segment shaped sections to facilitate assembly between the ring 5 and mold casing 1. In accordance with the present invention the wiper strip or ring 9 is secured in position by means of spring clamps 10 that are preferably integrally formed with the bottom ring 5 in angularly spaced relation as shown in Figure 2, to form a space for receiving the wiper ring. The free end of the spring tip 10 may be slightly llared, as shown, to make it convenient to slip the inner face portion 11 of the wiper ring underneath the clip with the ared portion 12 of the ring extending upward as shown.
By means of the clips 10 which have a shank portion embedded in the ring 5, the wiper strips are inserted in position with the flared portion 12 properly spaced concentric With the ring 5 and the hot top casing 1 so that when the hot top is lowered in the ingot mold the flared portion 12 of the wiper strip will contact the inner wall of the ingot mold to provide an clfective seal. As shown in Figures 2 and 5, the clip 10 lies in a V-shaped recess lila slightly below the face of the flange of bottom ring 5 to provide a bite for firmly gripping the wiper strip 9.
When the metal is poured in the ingot through the hot top from a ladle suspended above, it will rise in the ingot mold and in the hot top to provide excess metal above the ingot mold for feeding the center of the ingot as the metal solidies in the mold to avoid the formation of piping. As the metal rises and envelops the Wiper strip 12 it will freeze to form a seal, thus preventing the metal from running out between the hot top and the ingot mold. When the ingot is cast the mold is removed, the ring S being broken in this operation, or it may be retained on the croppage or scrap portion of the ingot from which it is subsequently removed. If it adheres to the hot top casing 1, it is readily removed therefrom and replaced by a new ring with new wiper strips.
It is evident from the foregoing description of the f invention that the use of the spring clamps 1h for anchoring the wiper strips eliminates the need for shaping the replaceable portions of bottom ring 5 to receive offset or struck out portions in the wiper strip. Also by means of the spring clips, which are readily provided in any numbers being relatively inexpensive, the wiper strip is more firmly held and more accurately placed when inserted between the ring 5 and the hot top casing 1.
Although one embodiment of the invention has been herein illustrated and described, it will be evident to those skilled in the art that various modifications may be made in the details of construction without departing from the principles herein set forth.
l claim:
l. In a hot top for ingot molds, a casing having refractory lining and an attachable bottom ring of refractory material attached thereto, said ring having a flange portion spaced from the bottom of the casing and having A integrally formed metal clips with a leg extending into the body of the ring and a clamping portion overlying the flange face, and sheet metal wiper strips inserted between said clips and ange faces.
2. In a hot top for ingot molds, a casing having refractory lining and an attachable bottom ring of refractory material attached thereto, said ring having a flange portion spaced from the bottom of the casing and having a plurality of angularly spaced metal clips with a leg extending into the body of the ring and a clamping portion overlyv 3 v 4 ing the Range face, and sheet' metal Wiper strips inserted clamping portion to provide a bite, vand sheet metal wiper between saidclips and fla-nge faces Withtheinner edges strips inserted' between said clips and 'ang'e" faces with of the strips abutting the legs ofthe clips. the inner edges of the strips abutting the legs of the clips.
3. In a hot to for ingot molds, a casing having refractoryA liningl and m'- attachable bottom ring of refractory.` 5 References Cited m the me of uns patent material attached thereto, said-ring-havng aange'portion UNITED STATES PATENTS spaced from thebottom of the' casng'andihazying a plural- 1,949,292 Charman et al Feb. 27, 1934 ity'of angularly spaced metal clips witha leg extending 2,088,288 Charman July 27, 1937 into thebody of theV nng and a' clamping portion: overlying 2,258,483 Chaman -10-, Ot..71, 1941 the ange face,V the-flange face beingrecessedv bel'ow'tl'ie` 10 2,287,772 Anthony June 30, 1942

Claims (1)

1. IN A HOT TOP FOR INGOT MOLDS, A CASING HAVING REFRACTORY LINING AND AN ATTACHABLE BOTTOM RING OF REFACTORY MATERIAL ATTACHED THERETO, SAID RING HAVING A FLANGE PORTION SPACED FROM THE BOTTOM OF THE CASING AND HAVING INTEGRALLY FORMED METAL CLIPS WITH A LEG EXTENDING INTO THE BODY OF THE RING AND A CLAMPING PORTION OVERLYING THE FLANGE FACE, AND SHEET METAL WIPER STRIPS INSERTED BETWEEN SAID CLIPS AND FLANGE FACES.
US425231A 1954-04-23 1954-04-23 Wiper ring mountings for hot tops Expired - Lifetime US2741816A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914824A (en) * 1955-01-21 1959-12-01 Frank H Ellenbaum Hot top
US2952055A (en) * 1957-10-07 1960-09-13 Thiem Products Inc Hot top construction
US2988793A (en) * 1958-10-08 1961-06-20 Oglebay Norton Co Composite hot top and method of manufacture
US3014254A (en) * 1958-12-04 1961-12-26 Ervin A Marcec Hot top
US3018527A (en) * 1959-05-15 1962-01-30 Oglebay Norton Co Integrated bottom ring and attaching clip unit
US3063111A (en) * 1957-09-17 1962-11-13 Oglebay Norton Co Bottom rings for composite hot tops
US3106001A (en) * 1961-03-13 1963-10-08 Oglebay Norton Co Hot top ring, wiper, clip unit combination
DE1165211B (en) * 1960-02-03 1964-03-12 Foseco Trading Ag Heat hood for block molds
US3153823A (en) * 1963-04-16 1964-10-27 Sherwood G Haw Unitized hot top liner
US3236492A (en) * 1963-02-01 1966-02-22 Oglebay Norton Co Hot top and seal signal device therefor
US3318564A (en) * 1965-02-02 1967-05-09 Bate Michael E La Hot top and adjustable wiper strips therefor
DE1244341B (en) * 1959-05-26 1967-07-13 Oglebay Norton Co Bottom ring and stripping band arrangement for a heat hood for molds

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949292A (en) * 1932-02-15 1934-02-27 Ferro Eng Co Hot top
US2088288A (en) * 1933-07-21 1937-07-27 Walter M Charman Slab hot top
US2258483A (en) * 1940-11-14 1941-10-07 Walter M Charman Hot top
US2287772A (en) * 1940-10-22 1942-06-30 Ferro Eng Co Hot top blocking

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949292A (en) * 1932-02-15 1934-02-27 Ferro Eng Co Hot top
US2088288A (en) * 1933-07-21 1937-07-27 Walter M Charman Slab hot top
US2287772A (en) * 1940-10-22 1942-06-30 Ferro Eng Co Hot top blocking
US2258483A (en) * 1940-11-14 1941-10-07 Walter M Charman Hot top

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914824A (en) * 1955-01-21 1959-12-01 Frank H Ellenbaum Hot top
US3063111A (en) * 1957-09-17 1962-11-13 Oglebay Norton Co Bottom rings for composite hot tops
US2952055A (en) * 1957-10-07 1960-09-13 Thiem Products Inc Hot top construction
US2988793A (en) * 1958-10-08 1961-06-20 Oglebay Norton Co Composite hot top and method of manufacture
US3014254A (en) * 1958-12-04 1961-12-26 Ervin A Marcec Hot top
US3018527A (en) * 1959-05-15 1962-01-30 Oglebay Norton Co Integrated bottom ring and attaching clip unit
DE1244341B (en) * 1959-05-26 1967-07-13 Oglebay Norton Co Bottom ring and stripping band arrangement for a heat hood for molds
DE1165211B (en) * 1960-02-03 1964-03-12 Foseco Trading Ag Heat hood for block molds
US3106001A (en) * 1961-03-13 1963-10-08 Oglebay Norton Co Hot top ring, wiper, clip unit combination
US3236492A (en) * 1963-02-01 1966-02-22 Oglebay Norton Co Hot top and seal signal device therefor
US3153823A (en) * 1963-04-16 1964-10-27 Sherwood G Haw Unitized hot top liner
US3318564A (en) * 1965-02-02 1967-05-09 Bate Michael E La Hot top and adjustable wiper strips therefor

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