US3358984A - Supporting structure for steelmaking converter vessels - Google Patents

Supporting structure for steelmaking converter vessels Download PDF

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Publication number
US3358984A
US3358984A US342637A US34263764A US3358984A US 3358984 A US3358984 A US 3358984A US 342637 A US342637 A US 342637A US 34263764 A US34263764 A US 34263764A US 3358984 A US3358984 A US 3358984A
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US
United States
Prior art keywords
vessel
converter
frame
brackets
flanges
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
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US342637A
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English (en)
Inventor
Grassin Henri
Meynard Pierre
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.)
Compagnie des Ateliers et Forges de la Loire SA
Original Assignee
Compagnie des Ateliers et Forges de la Loire SA
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Publication date
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Publication of US3358984A publication Critical patent/US3358984A/en
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Expired - Lifetime legal-status Critical Current

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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
    • C21C5/50—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 vessel of a converter must be supported for pivotal rotation about a horizontal axis to move the converter to its different operative positions as required during charging, blowing and pouring. Since the sheeting from which the converter vessel or shell is made is liable during the blow to be carried to relatively high temperatures which can well exceed 200 C., it is customary to support the vessel within an annular frame or ring member coaxially surrounding the vessel in radially spaced relation with it, and to provide the horizontal pivots or trunnions on such frame member. This avoids the danger of heating the trunnions excessively and also of causing trunnion misalignment due to thermal distortion as would inevitably occur at the temperature involved were the trunnions secured directly to the converter vessel.
  • the means supporting the converter vessel within the annular frame member must include only a limited number of spaced areas of engagement so as to restrict heat transfer from the vessel to the frame member.
  • such supporting means must be so designed and constructed as to ensure the requisite coincidence between the axes of revolution of the vessel and frame member while permitting relative thermal expansion between the two in radial directions, and also to locate the vessel and frame member axially with respect to each other while permitting relative expansion between them in the axial direction.
  • a specific object of this invention lies in the provision of improved converter supporting structure of the type specified, wherein the functions of locating the vessel and frame radially with respect to each other (for coincidence of their axes) and of locating the vessel and frame axially with respect to each other are accomplished independently of one another and without mutual interference so as to permit full freedom of relative radial and axial expansion without objectionable clearance in any direction.
  • a broader object is to provide improved converter supporting structure achieving smooth and efl'icient rocking movements of the converter at all operating temperatures and especially useful in connection with large-capacity converters.
  • the invention in an important aspect comprises a converter structure including a converter vessel, an annular frame or ring coaxially surrounding the vessel in radially spaced relation therewith and pivotable about a horizontal axis and means for supporting the vessel from the "ice frame wherein said supporting means comprises first members on the vessel having a circumferentially spaced series of surfaces engageable with surface means of the frame along planes generally parallel to the common axis of the vessel and frame, and second members on the vessel separate and distinct from the first members and having surfaces engageable with surface means of the frame along planes substantially transverse to said common axis.
  • FIGS. 1 and 2 illustrate for explanatory purposes a typical converter structure according to the prior art, respectively in plan view and in section on an enlarged scale on the line lI- Il of FIG. 1;
  • FIG. 3 is a plan view of a converter structure according to an embodiment of the invention.
  • FIG. 4 is a section on line IVIV of FIG. 3;
  • FIG. 5 is a section on line VV of FIG. 4.
  • a converter vessel 0 having a cylindrical intermediate section, which is surrounded by an annular frame or ring 1.
  • the ring 1 is formed with diametrically aligned bosses 10 provided with axially aligned bore-s, as shown in FIG. 2, for receiving suitable trunnion means not shown to suspend the structure for bodily pivotal movement from an external frame about a horizontal axis.
  • the means interconnecting the converter vessel or body 0 with the ring 1 comprise two circumferential series of brackets, a and b, suitably secured around axially-spaced circumferential areas of the converter body, as by being welded or bolted thereto.
  • the brackets a and b have perpendicularly projecting flanges.
  • the under surfaces of the projecting flanges of all the upper brackets a are adapted to engage the flat upper surface d of the ring 1, and the upper surface of the projecting flanges of the lower brackets b are similarly adapted to engage the fiat under surface e of ring 1 as will be apparent from FIG. 2.
  • Such engagement serves to locate the vessel c and the ring 1 in their proper relative axial position.
  • the flat surfaces d and e are formed with ribs such as f, provided with generally radial lateral surfaces, parallel to or extending through the axis of the ring 1, and engageable by complementary radial, lateral surfaces formed on the brackets a and b.
  • FIGS. 3-5 there is again illustrated a converter structure including a vessel and an annular frame or ring 1.
  • brackets 2 and 3 having their one flanges secured to the outer surface of vessel C as by bolting and welding at axially spaced circumferential areas of said vessel, and having their other flanges projecting horizontally from the converter.
  • the brackets 2 and 3 in contradistinction with the somewhat similarly arranged brackets a and b of the conventional structure of FIGS.
  • 1-3 herein cooperate exclusively to perform the radial locating or centering function, having lateral surfaces engaging complementary lateral surfaces of ribs or bosses 4,4 provided on the upper and lower surfaces and 6 respectively of frame 1.
  • the mating lateral surfaces are suitably machined in the workshop or on site.
  • brackets 2 and 3 are so positioned that in the cool condition of the converter vessel the spacing between the under surface of the horizontal flanges of the upper brackets 2 and the upper surfaces of the horizontal flanges of the lower brackets 3, is appreciably greater than the spacing between the upper and lower ring surfaces 4 and 4, whereby to provide a clearance space as indicated at 7.
  • the brackets 2 and 3 do not cooperate to ensure the relative axial location of the vessel 0 and ring 1, but only the relative radial locating or centering thereof as just explained above.
  • the axial locating function is herein accomplished by a third circumferential series of brackets 8 having their vertical flanges secured, as by bolting or welding, around the periphery of vessel 1: in such a position that the under surfaces of the horizontally projecting flanges of said brackets 8 rest on the upper surface of a lower horizontal wall element 6 of the ring 1.
  • the said upper surface is flat and hence can be preliminarily rectified true in the workshop.
  • the brackets 8 are preferably bolted or welded in advance to the converter vessel and their under surfaces may be rectified to a flat and coplanar condition either in the workshop or on site.
  • the upper wall element 5 of the ring 1 is apertured as at 9 to enable the converter vessel 0 to be readily lowered into position within the ring 1.
  • the converter vessel 0 can freely expand axially with respect to the ring 1 without creating any clearance in the axial locating means, provided essentially by the upper surface of the lower ring flange or wall element 6 cooperating with the under surfaces of brackets 8. Since the distance, as measured axially along the shell of converter c, between the horizontal flanges of brackets 8 and 3 is very small, only a few centimeters in length, thermal expansions and contractions of the converter shell in the axial direction will not exert any substantial influence thereon.
  • a converter structure including a steelmaking converter vessel, an annular frame coaxially surrounding a cylindrical portion of the vessel in spaced relation therewith, means for pivoting the frame about a generally horizontal axis, means for Supporting said vessel from said frame, said supporting means comprising lateral surfaces on said frame, a first lower circumferential series of angle brackets having their one flanges secured around said converter vessel parallel with the vessel axis and having their other flanges arranged radially of said cylindrical portion of said vessel and formed with complementary lateral surfaces engaging said lateral surfaces formed on said frame, a lower wall element on said frame, a second lowef circurnferential series of angle brackets having their one flanges secured on the periphery of said vessel parallel with said vessel axis so that the under surfaces of the radially projecting other flanges of said second series of brackets rest on the upper surface of said lower wall element of said annular frame, the distance between said other flanges of said first lower series of brackets and said second series of brackets being of
  • Converter structure according to claim 1 wherein said supporting means comprises moreover an upper circumferential set of angle brackets having their one flanges secured around said cylindrical portion of said converter vessel with a clearance space provided between their other radially projecting flanges and the upper surface of said annular frame.
  • Converter structure according to claim 2 wherein said upper surface of said annular frame is apertured to enable said converter vessel to be readily lowered into position within said frame.

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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)
  • Basic Packing Technique (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
US342637A 1963-02-15 1964-02-05 Supporting structure for steelmaking converter vessels Expired - Lifetime US3358984A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR925069A FR1378826A (fr) 1963-02-15 1963-02-15 Dispositif de fixation des cornues de convertisseurs dans leurs ceintures

Publications (1)

Publication Number Publication Date
US3358984A true US3358984A (en) 1967-12-19

Family

ID=8797239

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Application Number Title Priority Date Filing Date
US342637A Expired - Lifetime US3358984A (en) 1963-02-15 1964-02-05 Supporting structure for steelmaking converter vessels

Country Status (6)

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US (1) US3358984A (es)
AT (1) AT262351B (es)
ES (1) ES295836A1 (es)
FR (1) FR1378826A (es)
GB (1) GB1039774A (es)
NL (1) NL6401134A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561744A (en) * 1969-05-27 1971-02-09 Pennsylvania Engineering Corp Stabilized mounting for boflike vessels

Families Citing this family (1)

* 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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000621A (en) * 1958-03-12 1961-09-19 Voest Ag Tiltable crucible or converter for refining crude iron
US3146983A (en) * 1961-11-08 1964-09-01 Chicago Bridge & Iron Co Mounting for invertible vessel
US3163696A (en) * 1961-05-09 1964-12-29 Stora Kopparbergs Bergslags Ab Arrangement for tiltable furnaces
US3182979A (en) * 1963-02-26 1965-05-11 Pennsylvania Engineering Corp Furnace support structure
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000621A (en) * 1958-03-12 1961-09-19 Voest Ag Tiltable crucible or converter for refining crude iron
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
US3146983A (en) * 1961-11-08 1964-09-01 Chicago Bridge & Iron Co Mounting for invertible vessel
US3191921A (en) * 1962-01-25 1965-06-29 Chicago Bridge & Iron Co Steel-making converter with expansionaccommodating vessel mounting
US3182979A (en) * 1963-02-26 1965-05-11 Pennsylvania Engineering Corp Furnace support structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561744A (en) * 1969-05-27 1971-02-09 Pennsylvania Engineering Corp Stabilized mounting for boflike vessels

Also Published As

Publication number Publication date
ES295836A1 (es) 1964-03-16
GB1039774A (en) 1966-08-24
AT262351B (de) 1968-06-10
FR1378826A (fr) 1964-11-20
NL6401134A (es) 1964-08-17

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