US3373985A - Annular support ring for converters - Google Patents

Annular support ring for converters Download PDF

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Publication number
US3373985A
US3373985A US340916A US34091664A US3373985A US 3373985 A US3373985 A US 3373985A US 340916 A US340916 A US 340916A US 34091664 A US34091664 A US 34091664A US 3373985 A US3373985 A US 3373985A
Authority
US
United States
Prior art keywords
members
vessel
middle portion
segment members
trunnion
Prior art date
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
Application number
US340916A
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English (en)
Inventor
Peter Puxkandl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine AG
Original Assignee
Voestalpine AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
Application granted granted Critical
Publication of US3373985A publication Critical patent/US3373985A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C21C5/50—Tilting mechanisms for converters
    • 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

  • the middle portion consists of a series of individual parts, which complement one another to form a trunnion ring and are connected by connecting means taking up tension forces to form a composite ring clamped about the crucible.
  • all of the individual parts of the composite ring comprising the load-bearing middle portion are welded about the entire periphery of the ring to the upper and lower parts of the crucible, which form a sheet metal shell.
  • this construction eliminates the difiiculties entailed by the requirement of transportability and by the weight of large trunnion rings, a disadvantage of this known construction is seen in that the trunnions cannot be removed after welding in the load-bearing middle part.
  • the present invention has as its object to avoid these difiiculties by providing a metallurgical vessel comprising upper and lower sheet metal portions and a load-bearing middle portion wherein the middle portion includes two spaced symmetrical segment members rigidly connected to the upper and lower vessel portions with the ends of the segments facing each other, along with fiat metal plates welded to the facing ends of the segments to complete the middle portion of the vessel and a pair of trunnioncarrying connecting members removably mounted by screws to the outer sides of the facing ends of the segment members so as to leave a cavity or open space between each fiat metal plate and the corresponding trunnioncarrying member.
  • the connecting members there suitably are also such members which are adapted to transmit transverse forces and the moment of torsion.
  • stops or bolts may be used, as is known from an earlier proposal of the applicant (cf. Austrian Patent No.,209,924).
  • the trunnion-carrying members are made of cast steel, whereas the remaining segment members consist of sheet metal of good welding properties.
  • FIG. 1 is a lateral view of the crucible
  • FIG. 2 is a horizontal sectional view in the height of the plane of the trunnions.
  • the crucible comprises an upper part 1, the load-bearing middle part 2, which is provided on opposite sides with trunnions, and the bottom part 3.
  • the load-bearing middle part is formed according to the invention by four members which are equally designed in pairs, namely by the oppositely disposed segment members 4, 4 which carry no trunnions, and the connecting members 5, 5 carrying the trunnions.
  • segment members 4, 4 are, on the one hand, connected through the welded-in plates 11 which complement the inner walls of the box-profile of the segment members to form the central shell portion; this is a non-releasable welded connection.
  • the facing ends of the segment members 4, 4 are also screw-connected with their outer walls to the connecting members 5, 5 which carry the trunnions 6, in such manner that the flange-like ends 8 of the connecting members are mounted on adequately beveled outer ends 9 of members 4, 4' by means of tension screws 10; this thus is a releasable screw connection.
  • a gap or cavity 7 is provided which hampers any heat transfer from the vessel shell to the trunnions.
  • connection of the members 4, 4' with the upper and lower parts of the converter is performed by welding along the boundary lines AB and C-D (seam to upper part) and A'B' and C'D (seam to lower part). Thereby a perfectly rigid and inseparable connection between the members 4, 4' and the upper and lower parts of the vessel is achieved.
  • the trunnion-carrying members 5, 5' are in no immediate connection with the upper and lower parts of the vessel, but they are connected in the manner already described above only with the segment members 4 and 4' by means of screws. Thereby it is possible to remove the trunnion-carrying members 5, 5' fromthe ready vessel at any time, if this is necessary for a repair or for some other reason.
  • Assembling of the crucible on site is effected in such manner that segment members 4, 4' are connected by the screws 10 with connecting members 5, 5 to form a closed, true-to-gauge ring. Then the ring is welded in the manner already described to the lower crucible part along lower seams A'B', C'D', and subsequently to the upper part along upper seams A-B, C-D. Finally, plates 11 are welded in along boundary lines A-A', D-D on the one side, and B-B, C-C on the other side.
  • a metallurgical vessel comprising upper and lower sheet metal portions and a load-bearing middle portion wherein said middle portion comprises two spaced symmetrical segment members rigidly and undetachably connected to said upper and lower vessel portions with the respective ends of the segments facing each other, said segment members having a double-wall hollow structure, one wall thereof being rigidly and undetachably connected to the upper and lower vessel portions, two flat metal plates welded respectively to the facing ends of the two segment members to complete the middle portion of the vessel, and a pair of trunnion-carrying connecting members removably mounted to the outer sides of said facing ends of said segment members by releasable screw connections, a cavity remaining between each trunnion-carrying connecting member and the corresponding flat metal plate.

Landscapes

  • 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)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
US340916A 1963-02-28 1964-01-29 Annular support ring for converters Expired - Lifetime US3373985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT159563A AT252289B (de) 1963-02-28 1963-02-28 Tiegel oder Konverter

Publications (1)

Publication Number Publication Date
US3373985A true US3373985A (en) 1968-03-19

Family

ID=3516814

Family Applications (1)

Application Number Title Priority Date Filing Date
US340916A Expired - Lifetime US3373985A (en) 1963-02-28 1964-01-29 Annular support ring for converters

Country Status (3)

Country Link
US (1) US3373985A (de)
AT (1) AT252289B (de)
GB (1) GB1016411A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477706A (en) * 1967-09-15 1969-11-11 Voest Ag Metallurgical vessel,such as a crucible or converter
US3635458A (en) * 1968-10-15 1972-01-18 Voest Ag Tiltable crucible or converter
US4055335A (en) * 1972-06-12 1977-10-25 Pennsylvania Engineering Corporation Transformation of top-blown steel converter vessel to bottom-blown type

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US767576A (en) * 1903-07-14 1904-08-16 Bernhard Ferdinand Schubert Jar or bottle closure.
US840462A (en) * 1906-08-01 1907-01-08 Richard F Barker Chemical fire-extinguisher.
FR1229257A (fr) * 1958-08-14 1960-09-06 Pintsch Bamag Ag Bague de support de convertisseur
AT220644B (de) * 1960-09-30 1962-04-10 Voest Ag Tiegel oder Konverter
US3193272A (en) * 1962-07-02 1965-07-06 Pintsch Bamag Ag Converter for steel plants

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US767576A (en) * 1903-07-14 1904-08-16 Bernhard Ferdinand Schubert Jar or bottle closure.
US840462A (en) * 1906-08-01 1907-01-08 Richard F Barker Chemical fire-extinguisher.
FR1229257A (fr) * 1958-08-14 1960-09-06 Pintsch Bamag Ag Bague de support de convertisseur
AT220644B (de) * 1960-09-30 1962-04-10 Voest Ag Tiegel oder Konverter
US3193272A (en) * 1962-07-02 1965-07-06 Pintsch Bamag Ag Converter for steel plants

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477706A (en) * 1967-09-15 1969-11-11 Voest Ag Metallurgical vessel,such as a crucible or converter
US3635458A (en) * 1968-10-15 1972-01-18 Voest Ag Tiltable crucible or converter
US4055335A (en) * 1972-06-12 1977-10-25 Pennsylvania Engineering Corporation Transformation of top-blown steel converter vessel to bottom-blown type

Also Published As

Publication number Publication date
GB1016411A (en) 1966-01-12
AT252289B (de) 1967-02-10

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