US3497197A - Tiltable crucible or converter for carrying out metallurgical processes - Google Patents

Tiltable crucible or converter for carrying out metallurgical processes Download PDF

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Publication number
US3497197A
US3497197A US642925A US3497197DA US3497197A US 3497197 A US3497197 A US 3497197A US 642925 A US642925 A US 642925A US 3497197D A US3497197D A US 3497197DA US 3497197 A US3497197 A US 3497197A
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US
United States
Prior art keywords
crucible
carrying ring
vessel
carrying
braces
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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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US642925A
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English (en)
Inventor
Othmar Puhringer
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Voestalpine AG
Voest AG
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Voestalpine AG
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Publication date
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Publication of US3497197A publication Critical patent/US3497197A/en
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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

Definitions

  • a hearing arrangement for a tiltable metallurgical vessel comprising a carrying ring mounted to surround the shell of said vessel at a distance, a number of upper and lower supporting lugs spaced around the circumference of the vessel, and elastically deformable braces connecting said supporting lugs and said carrying ring to enable friction-free expansion of the vessel through complete compensation of thermal expansion differences by elastic deformation of said braces.
  • Tiltable crucibles or converters for refining pig iron comprise a refractory-lined cylindrical or pear-shaped vessel, the bottom part of which may be integral with the shell part, or it may be detachable.
  • a carrying ring rigidly connected to two trunnions is mounted to surround the shell of such a crucible approximately at the height of the center of gravity of the charged crucible, said carrying ring being spaced from the crucible shell, so that air can circulate therebetween.
  • the crucible must be tiltable from the substantially vertical blowing position into the upside-down position for complete discharging and back into the upright position by means of electric or hydraulic drives acting on the trunnions, and the carrying ring has the task of securely holding the crucible in any position and of transmitting to the crucible the forces exerted by the drive.
  • rows of upper and lower supporting elements in the form of rectangular brackets are provided for supporting the crucible, one flange of a bracket being mounted on the crucible shell and the other flange engaging the upper or lower side of the carrying ring and being also fixed thereto by means of screws or the like.
  • the clearance is dependent upon the size of the crucible and also upon the size of the carrying ring. With large crucibles, the expansion clearance has the result that the crucible, during erecting or during tilting into the upsidedown position, will rock to and fro, which causes a sudden impact and may lead to extensive wear of the supporting lugs.
  • the invention has as its object to avoid the mentioned disadvantages and difficulties.
  • a converter of the aforementioned kind it resides in that the supporting lugs and the carrying ring are connected by elastically deformable braces.
  • the length of each brace from its fastening point on the upper or lower side of the carrying ring to the corresponding upper or lower supporting lug substantially corresponds to the distance normal to the theoretical thermal expansion direction emanating from the center of the crucible, the inclination of which towards the horizontal line is D/ZR, D standing for the distance between upper and lower supporting lugs and R for the outer radius of the vessels, so that the crucible-side ends of the braces within the limits of the thermal expansion coincide with the direction of movement of the crucible during thermal expansion.
  • the braces consist of U-shaped rails, one flange of which is connected, preferably by means of screws, to the upper or lower side of the carrying ring and the other flange to the upper or lower supporting lug designed as an abutment.
  • FIGS. 1 and 2 diagrammatically show a crucible according to the invention in side view and top view.
  • FIG. 3 demonstrates the design of the bearing arrangement according to the invention in vertical sectional view.
  • numeral 1 denotes a crucible or converter for refining pig iron, comprising a cylindrical middle part, a bottom part in the shape of a spherical cap, and a top part in the shape of a conic frustum.
  • the carrying ring 2 which is box-shaped, is mounted to surround the crucible shell 1 at a distance.
  • Rows of upper supporting lugs 3 and lower supporting lugs 3' are provided on the shell of the crucible, said supporting lugs, as shown in FIG. 3, being designed as abutments having supporting surfaces 4 and reinforcement ribs 5.
  • Braces 6 are provided, according to the invention, for connecting the upper or lower side of the carrying ring with the supporting lugs. As shown in FIG.
  • the length of these braces corresponds to the normal distance from fastening point 7 or 7 of each brace to the straight line emanating from the center M of the crucible, which is designated by Z and represents the theoretical thermal expansion direction.
  • This theoretical thermal expansion direction has an inclination of D/2R towards the horizontal line, D being the distance between upper and lower supporting lugs and R standing for the outer radius of the vessel.
  • the crucible-side ends of the braces can move along a circular path tangential to the theoretical thermal expansion direction Z of the crucible. This is indicated by arrow 8 in FIG. 1.
  • the bearing arrangement according to the invention enables a virtually friction-free expansion of the crucible. Any differences in length that will result from the transformation of the linear movement into a circular path in the range of the thermal expansion path, can be accommodated because of their small order, by elastic deformation of the braces.
  • braces as shown in FIG. 3 have proved suitable. These braces are U-shaped rails 9, the flanges projecting from the web of rail 9 at an obtuse angle. One of the flanges is fixed to the upper or lower wall of the box-shaped carrying ring and the other flange to the supporting surface 4 of the corresponding supporting lug by means of screws 10.
  • braces and supporting lugs are arranged in three groups,
  • the crucible mounting of the invention enables complete compensation of thermal expansion differences by elastic deformation of the braces.
  • the forces acting upon the carrying ring are easily identifiable, due to resilient deformation.
  • a further advantage of the bearing arrangement according to the invention is a very favourable transmission of forces to the vessel, as the point of force introduction at the supporting lugs 3 and 3' is very close to the sheet-metal shell of the crucible, and thus only small force transition moments result.
  • the abutment members are arranged in especially firm zones of the vessel, i.e. the upper frusto-conical zone and the lower torus zone, respectively.
  • braces are quickly and easily exchangeable, which is of special importance during an eventual disorder or a standstill.
  • cooling conditions of the crucible are also improved, as the air can circulate more freely.
  • a tiltable metallurgical vessel comprising a substantially cylindrical shell, a carrying ring mounted to surround said shell in spaced relationship, and a number of upper and lower supporting lugs designed as abutments spaced around the circumference of said vessel and spaced respectively above and below said ring, each of said supporting lugs being connected to said carrying ring by an elastically deformable brace, the length of each of said braces from its fastening point on said carrying ring to the corresponding supporting lug on the Vessel substantially corresponding to the distance normal to the theoretical thermal expansion direction emanating from the center of said vessel and having an inclination towards the horizontal line of D/ 2R, D standing for the distance between said upper and lower supporting lugs, and R for the outer radius of said vessel, and the fastening point of said brace on the corresponding supporting lug lying substantially along the path of said theoretical thermal expansion emanating from the center of said vessel and having said inclination.
  • a vessel as set forth in claim 1 comprising a cylindrical middle part, a torus-shaped bottom part, and a frusto-conical top part, wherein said upper supporting lugs are mounted on said frusto-conical top part and said lower supporting lugs are mounted on said torus-shaped bottom part.
  • a tiltable metallurgical vessel comprising a substantially cylindrical shell, a carrying ring having a box-type section mounted to surround said shell in spaced relationship, and a number of upper and lower supporting lugs designed as abutments spaced around the circumference of said vessel, said supporting lugs and said carrying ring being connected by elastically deformable braces in the form of U-shaped rails, one flange of each of said rails being fastened to said carrying ring and the other flange being fastened to one of said supporting lugs.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
US642925A 1966-06-21 1967-06-01 Tiltable crucible or converter for carrying out metallurgical processes Expired - Lifetime US3497197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT589466A AT266893B (de) 1966-06-21 1966-06-21 Kippbarer Tiegel oder Konverter zur Durchführung metallurgischer Prozesse

Publications (1)

Publication Number Publication Date
US3497197A true US3497197A (en) 1970-02-24

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ID=3580704

Family Applications (1)

Application Number Title Priority Date Filing Date
US642925A Expired - Lifetime US3497197A (en) 1966-06-21 1967-06-01 Tiltable crucible or converter for carrying out metallurgical processes

Country Status (5)

Country Link
US (1) US3497197A (enrdf_load_stackoverflow)
AT (1) AT266893B (enrdf_load_stackoverflow)
BE (1) BE699737A (enrdf_load_stackoverflow)
DE (1) DE1583302B1 (enrdf_load_stackoverflow)
GB (1) GB1183732A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575402A (en) * 1967-12-07 1971-04-20 Demag Ag Metallurgical vessel supporting device
US4426069A (en) 1978-08-07 1984-01-17 Pennsylvania Engineering Corporation Mettalurgical vessel suspension system
DE9211926U1 (de) * 1992-09-04 1992-12-17 Voest-Alpine Industrieanlagenbau Ges.m.b.H., Linz Kippbarer Konverter
WO1998053261A1 (en) * 1997-05-23 1998-11-26 Boliden Contech Ab A metallurgical furnace unit
ITMI20111277A1 (it) * 2011-07-08 2013-01-09 Danieli Off Mecc Convertitore ad ossigeno ribaltabile
CN109439838A (zh) * 2019-01-11 2019-03-08 何斌 一种炼钢转炉用托圈

Families Citing this family (8)

* 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
DE2739540C3 (de) * 1977-09-02 1983-11-03 Winfried 5963 Wenden Burkhard Tragringlagerung für ein metallurgisches Gefäß
CA1133697A (en) * 1978-08-07 1982-10-19 Rashed N. Nagati Metallurgical vessel suspension system
AT357584B (de) * 1978-11-27 1980-07-25 Voest Alpine Ag Kippbarer konverter
US4273316A (en) * 1979-07-27 1981-06-16 Pennsylvania Engineering Corporation Metallurgical vessel suspension system
DE102014220435A1 (de) 2014-10-09 2016-04-14 Sms Group Gmbh Lagervorrichtung zum Lagern eines metallurgischen Gefäßes und metallurgisches Gefäß
DE102015223007A1 (de) * 2015-11-20 2017-05-24 Sms Group Gmbh Anordnung zum Verbinden einer Lamelle mit einem Tragring eines Konverters sowie Konverter mit einer solchen Anordnung
DE102021100544B4 (de) 2021-01-13 2022-10-27 Schaeffler Technologies AG & Co. KG Lageranordnung für einen Konverter

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2406380A (en) * 1942-11-19 1946-08-27 Jr William Johnston Cinder pot
FR1355699A (fr) * 1963-02-06 1964-03-20 Lorraine Laminage Perfectionnements apportés aux fours tournants d'affinage
US3163696A (en) * 1961-05-09 1964-12-29 Stora Kopparbergs Bergslags Ab Arrangement for tiltable furnaces
US3191922A (en) * 1961-10-17 1965-06-29 Voest Ag Bracket for supporting tiltable crucibles or converters
AT241503B (de) * 1960-11-23 1965-07-26 Demag Ag Konvertergefäß mit Tragring
US3201108A (en) * 1962-07-21 1965-08-17 Pintsch Bamag Ag Steel converter with loose supporting ring
US3288453A (en) * 1963-11-12 1966-11-29 Allis Chalmers Mfg Co Temperature compensating mounting for basic oxygen furnace
US3337205A (en) * 1963-01-31 1967-08-22 Voest Ag Tiltable crucible or converter for refining pig iron

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2406380A (en) * 1942-11-19 1946-08-27 Jr William Johnston Cinder pot
AT241503B (de) * 1960-11-23 1965-07-26 Demag Ag Konvertergefäß mit Tragring
US3163696A (en) * 1961-05-09 1964-12-29 Stora Kopparbergs Bergslags Ab Arrangement for tiltable furnaces
US3191922A (en) * 1961-10-17 1965-06-29 Voest Ag Bracket for supporting tiltable crucibles or converters
US3201108A (en) * 1962-07-21 1965-08-17 Pintsch Bamag Ag Steel converter with loose supporting ring
US3337205A (en) * 1963-01-31 1967-08-22 Voest Ag Tiltable crucible or converter for refining pig iron
FR1355699A (fr) * 1963-02-06 1964-03-20 Lorraine Laminage Perfectionnements apportés aux fours tournants d'affinage
US3288453A (en) * 1963-11-12 1966-11-29 Allis Chalmers Mfg Co Temperature compensating mounting for basic oxygen furnace

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575402A (en) * 1967-12-07 1971-04-20 Demag Ag Metallurgical vessel supporting device
US4426069A (en) 1978-08-07 1984-01-17 Pennsylvania Engineering Corporation Mettalurgical vessel suspension system
DE9211926U1 (de) * 1992-09-04 1992-12-17 Voest-Alpine Industrieanlagenbau Ges.m.b.H., Linz Kippbarer Konverter
US5364079A (en) * 1992-09-04 1994-11-15 Voest-Alpine Industrieanlagenbau Gmbh Tiltable converter
WO1998053261A1 (en) * 1997-05-23 1998-11-26 Boliden Contech Ab A metallurgical furnace unit
EP0887607A1 (en) * 1997-05-23 1998-12-30 Boliden Contech Ab A metallurgical furnace unit
EA000658B1 (ru) * 1997-05-23 1999-12-29 Булиден Контех Аб Металлургическая печь
US6060015A (en) * 1997-05-23 2000-05-09 Boliden Contech A. B. Metallurgical furnace unit
JP3333525B2 (ja) 1997-05-23 2002-10-15 ボリデン コンテック アクチェボラーグ 冶金用炉ユニット
ITMI20111277A1 (it) * 2011-07-08 2013-01-09 Danieli Off Mecc Convertitore ad ossigeno ribaltabile
WO2013008158A1 (en) * 2011-07-08 2013-01-17 Danieli & C. Officine Meccaniche S.P.A. Tilting oxygen converter
US9506124B2 (en) 2011-07-08 2016-11-29 Danieli & C. Officine Meccaniche S.P.A. Tilting oxygen converter
CN109439838A (zh) * 2019-01-11 2019-03-08 何斌 一种炼钢转炉用托圈

Also Published As

Publication number Publication date
GB1183732A (en) 1970-03-11
DE1583302B1 (de) 1971-02-11
BE699737A (enrdf_load_stackoverflow) 1967-11-16
AT266893B (de) 1968-12-10

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