US3385588A - Releasable bearing for crucible or converter - Google Patents

Releasable bearing for crucible or converter Download PDF

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Publication number
US3385588A
US3385588A US528575A US52857566A US3385588A US 3385588 A US3385588 A US 3385588A US 528575 A US528575 A US 528575A US 52857566 A US52857566 A US 52857566A US 3385588 A US3385588 A US 3385588A
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United States
Prior art keywords
crucible
converter
supporting
members
supporting members
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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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US528575A
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English (en)
Inventor
Puxkandl Peter
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Voestalpine AG
Voest AG
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Voestalpine AG
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4633—Supporting means
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories

Definitions

  • Tiltable crucible or converters for refining crude iron or for carrying out other metallurgical processes consist of a refractory-lined cylindrical or pear-shaped vessel.
  • a carrying body is mounted to surround the shell approximately in the height of the center of gravity, which carrying body is rigidly connected with two trunnions.
  • the crucible must be capable of being tilted by means of electromechanic or hydraulic drives acting on the trunnions from the substantially vertical blowing position into the upside-down position for emptying and back again.
  • the crucible is supported on the carrying ring by means of a number of claws spaced around the periphery of the shell of the crucible and suitably provided in pairs.
  • Known releasable crucible carrier constructions consist, for instance, of a frame which is open on one side and has a horseshoe-like shape. It has further been proposed to use an approximately square ring as the carrier body, into which the converter can be suspended in one angular position and, upon rotation through released from the suspended position.
  • the first-mentioned releasable bearing comprising a frame construction open on one side has the disadvantage that this system is statically indeterminate. Also square carrier rings do not represent superior constructions from the statical point of view; in any case, circular carrier rings can be manufactured with a higher degree of rigity, and there are no problems as to corner joints. They also require less space.
  • each of the upper supporting means consists of a supporting member pivotally mounted on the annular carrying body and an abutment member having a counter or stop face and being rigidly secured to the shell of the crucible, the radial extension of the abutment members being smaller than the inside radius of the carrier body so that upon release of the upper supporting means the crucible can be lowered out of the carrier ring, and that the lower supporting means which are rigidly mounted on the crucible wall are adapted to be positioned against the lower surface of the annular carrier body by detachable adjustment means.
  • the pivotable upper supporting members are suitably adapted to be swung around an axis which is parallel to the plane of the ring and parallel to the tangent to the converter in the bearing point, preferably in such manner that said supporting members are arranged on a shaft mounted in side pieces (cheeks) on the carrier body.
  • the pivotable supporting members are dis placcable along the mentioned axis; this may be realized in such manner that the supporting members are slidable along the shaft and/or the shaft is slidable in the side pieces.
  • the abutment members may comprise guide faces conically expanding in radial direction, which guide faces exert a centering action on the supporting members when the pivotable supporting members are swung into their supporting position.
  • the pivotable supporting members may have cambered side faces.
  • wedges or similar clamping devices are provided for fixing the pivotable supporting members in the swung-in supporting position, which block the slidability of the supporting members along the shaft.
  • the adjustment means between the lower supporting means and the annular carrier ring may likewise consist of one or several pairs of wedges, a fixation in horizontal and in vertical direction being feasible.
  • FIG. 1 is an elevation and FIG. 2 is a plan view of a crucible which is releasably supported in accordance with the invention.
  • FIG. 3 shows on an enlarged scale representations of the upper and lower supporting means in the supporting position as viewed in the direction of the two arrows A and A, respectively, according to FIG. 1.
  • FIG. 4 shows on an enlarged scale a vertical sectional view through the crucible wall, the carrier ring and the releasable bearing construction.
  • numeral 1 denotes the crucible and 2 a circular carrier ring arranged to surround the crucible with a clearance d and having a box-type profile, to which carrier ring the trunnions 3 are secured.
  • the carrier ring and on the crucible there are three supporting means, namely two, diametrically opposite to each other, in the plane of the trunnions and one perpendicularly thereto, in the plane of tilting.
  • the supporting means consist of supporting members 5 pivoted in side pieces 4 and of abutment members 6 rigidly secured to the shell of the crucible, the supporting members having supporting faces 7 and the abutment members having counter or stop faces 8, which faces in the swung-in position (supporting position) are in engagement with each other.
  • the abutment members 6 are provided on the conical upper portion of the crucible so that their radial extension is in any case smaller than the inside radius of the carrier body. It is thus possible that after swinging out the supporting members 5, as is shown in dash lines in FIG. 4, the crucible can be lowered out of the carrier ring.
  • the hubs of the supporting members 5 there are stop noses 5 limiting the swing path of the supporting members.
  • the clearance a which also in the conventional crucible-bearing arrangement is about 100 mm, may be increased in the bearing of the invention to 150 to 200 mm.
  • the increased clearance has the further advantage that the air-space insulation between the hot crucible wall and the carrier ring is improved, the bearings of the supporting members 5 on the carrier ring remain cool, the moving parts thus being uninfluenced by the radiation of heat from the crucible and a deformation being avoided.
  • the supporting members 5 are pivotable around axes 9 which are parallel to the plane of the ring and parallel to the tangent to the converter in the bearing point.
  • the supporting members 5 are adapted to be slidable along the mentioned axes. This may be realized in such manner that either the supporting members 5 are slidable along a shaft 10 (FIG. 4) and/or the shaft is arranged to be slidable in the side pieces or cheeks 4.
  • the centering device comprises the guide faces 11 of the abutment members 6, which guide faces conically expand in radial direction, and of the check side-faces 12 of the supporting members 5, which are correspondingly conically shaped and, in addition, cambered. In the swung-in supporting position the supporting members can be secured to the converter wall by means of screws 13, which pass through bores in the supporting members 5.
  • pairs of wedges 14 are provided, which block any displacement of the supporting members along shaft 10.
  • lower claws 15 are provided for this purpose which, as illustrated, are designed as open trough sections. They are rigidly secured to the crucible wall.
  • pairs of wedges 17, 17' are provided which bar any movement in vertical direction, and in addition there are two wedges 18, 18 (see FIG. 3) which also prevent a displacement in horizontal direction.
  • Numerals 19 and 20 denote a side guide means for the crucible, which may be of any desired known design. 'In the embodiment shown, a rib 19 which is rigidly mounted on the crucible shell is arranged between guide shoes 20 secured to the carrier ring.
  • a crucible transfer car having a suitable lifting device is first moved underneath the crucible. Then the lower adjustment meanspairs of wedges 17, 17 and wedges 18, 18'are released, and thereafter the lifting or carrying platform of the transfer car is lifted until the bottom part of the crucible is in contact with the lifting platform and in taking-up position. Then the screws 13 are released, the pairs of wedges 14 removed and the supporting members 5 swung out. Now the crucible can be lowered out of the carrier ring and, if desired, moved out horizontally upon tilting of the carrier ring. Tilting of the carrier ring saves part of the lowering path, because in that manner the crucible can be moved out already before its mouth has reached that level at which the carrier ring would be in the horizontal position.
  • a releasable bearing for a tiltable converter having a substantially cylindrical shell comprising a closed, annular carrier body which is arranged to surround the periphery of the converter in spaced relationship and on which the converter is supported by upper and lower supporting means, each of said upper supporting means consisting of a supporting member pivotably mounted on said annular carrier body and of an abutment member having a stop face adapted to cooperate with said supporting member in its swung-in supporting position and being rigidly secured to the converter shell, the radial extension of said abutment members being smaller than the inside radius of said carrier body so that upon release of said upper supporting means the converter can be lowered out of said carrier body, and said lower supporting means including means rigidly mounted on the converter shell and detachable adjustment means adapted to be positioned against the lower surface of said annular carrier body.
  • a releasable bearing for a tiltable converter having a substantially cylindrical shell comprising a carrier ring which has two dimetrically spaced trunnions and is arranged to surround the converter shell in spaced relationship, the converter being supported on said carrier ring by upper and lower supporting means, each of said upper supporting means consisting of a supporting member arranged on a shaft mounted in side pieces on said carrier ring so as to be pivotable around an axis which is parallel to the plane of said carrier ring and parallel to the tangent to the converter in the bearing point, and of an abutment member having a stop face adapted to cooperate with said supporting member in its swung-in position and being rigidly secured to the converter shell, the radial extension of said abutment members being smaller than the inside radius of said carrier ring so that upon release of said upper supporting means the converter can be lowered out of said carrier ring, and said lower supporting means including means rigidly mounted on the converter shell and detachable adjustment means adapted to be brought into engagement with the lower surface of
  • each of said pivotable supporting members is displaceable along its axis in that the supporting member is slidable along its shaft.
  • each of said pivotable supporting members is displaceable along its axis in that the shaft is slidable in its side pieces.
  • each of said abutment members comprises guide faces conically expanding in radial direction, which guide faces center the pivotable supporting members between them, when the latter are swung into their supporting position.
  • each of said pivotable supporting members is fixed in its swung-in supporting position by wedges Which prevent said supporting member from Sliding along its shaft.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
US528575A 1965-03-04 1966-02-18 Releasable bearing for crucible or converter Expired - Lifetime US3385588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT190365A AT259600B (de) 1965-03-04 1965-03-04 Lösbare Lagerung für Tiegel oder Konverter

Publications (1)

Publication Number Publication Date
US3385588A true US3385588A (en) 1968-05-28

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ID=3523498

Family Applications (1)

Application Number Title Priority Date Filing Date
US528575A Expired - Lifetime US3385588A (en) 1965-03-04 1966-02-18 Releasable bearing for crucible or converter

Country Status (7)

Country Link
US (1) US3385588A (enrdf_load_stackoverflow)
AT (1) AT259600B (enrdf_load_stackoverflow)
BE (1) BE676850A (enrdf_load_stackoverflow)
CS (1) CS150169B2 (enrdf_load_stackoverflow)
DE (1) DE6605433U (enrdf_load_stackoverflow)
ES (1) ES323760A1 (enrdf_load_stackoverflow)
GB (1) GB1135375A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3652071A (en) * 1970-04-16 1972-03-28 Voest Ag Tiltable converter supporting mechanism
US4273316A (en) * 1979-07-27 1981-06-16 Pennsylvania Engineering Corporation Metallurgical vessel suspension system
US4426069A (en) 1978-08-07 1984-01-17 Pennsylvania Engineering Corporation Mettalurgical vessel suspension system
US4792184A (en) * 1986-12-22 1988-12-20 Prince Corporation Container holder for a vehicle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903685C2 (de) * 1969-01-25 1975-07-17 Gutehoffnungshuette Sterkrade Ag, 4200 Oberhausen Metallurgisches Kippgefäß, Insbesondere Konverter zum Frischen von Roheisen
DE10251964A1 (de) * 2002-11-08 2004-05-19 Sms Demag Ag Schnellwechselbefestigung von metallurgischen Behandlungsgefäßen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US315582A (en) * 1885-04-14 Converteks
US2703253A (en) * 1953-04-24 1955-03-01 Joseph B Biederman Bottle holder
US3191921A (en) * 1962-01-25 1965-06-29 Chicago Bridge & Iron Co Steel-making converter with expansionaccommodating vessel mounting
US3191922A (en) * 1961-10-17 1965-06-29 Voest Ag Bracket for supporting tiltable crucibles or converters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US315582A (en) * 1885-04-14 Converteks
US2703253A (en) * 1953-04-24 1955-03-01 Joseph B Biederman Bottle holder
US3191922A (en) * 1961-10-17 1965-06-29 Voest Ag Bracket for supporting tiltable crucibles or converters
US3191921A (en) * 1962-01-25 1965-06-29 Chicago Bridge & Iron Co Steel-making converter with expansionaccommodating vessel mounting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3652071A (en) * 1970-04-16 1972-03-28 Voest Ag Tiltable converter supporting mechanism
US4426069A (en) 1978-08-07 1984-01-17 Pennsylvania Engineering Corporation Mettalurgical vessel suspension system
US4273316A (en) * 1979-07-27 1981-06-16 Pennsylvania Engineering Corporation Metallurgical vessel suspension system
US4792184A (en) * 1986-12-22 1988-12-20 Prince Corporation Container holder for a vehicle

Also Published As

Publication number Publication date
BE676850A (enrdf_load_stackoverflow) 1966-07-18
ES323760A1 (es) 1966-12-16
DE6605433U (de) 1970-05-21
AT259600B (de) 1968-01-25
CS150169B2 (enrdf_load_stackoverflow) 1973-09-04
GB1135375A (en) 1968-12-04

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