US3652072A - Support arrangement for metallurgical vessel such as steel mill converter - Google Patents

Support arrangement for metallurgical vessel such as steel mill converter Download PDF

Info

Publication number
US3652072A
US3652072A US98016A US3652072DA US3652072A US 3652072 A US3652072 A US 3652072A US 98016 A US98016 A US 98016A US 3652072D A US3652072D A US 3652072DA US 3652072 A US3652072 A US 3652072A
Authority
US
United States
Prior art keywords
vessel
supporting
supporting ring
supported
extending
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
US98016A
Other languages
English (en)
Inventor
Siegfried Stresemann
Karl-Heinz Langlit
Karl-Heinz Mahringer
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.)
Mannesmann Demag AG
Original Assignee
Demag 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 Demag AG filed Critical Demag AG
Application granted granted Critical
Publication of US3652072A publication Critical patent/US3652072A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • C21C5/4633—Supporting means

Definitions

  • ABSTRACT A supporting ring for metallurgical vessel, such as a tiltable or doned. revolvable steel mill converter, includes straps secured around the periphery of the vessel and in heat exchange relation [30] Foreign Application Priority Data therewith. These straps are connected to a support ring for the July 1, i967 cermanymwwmuunnunmnn 53503 vessel, which also surrounds the vesseLbut is not in heat exchange contact therewith.
  • the supporting arrangement m- 52 vs. dudes adjustable Connecting Screws which have a hinge-like . «C2lc s/so .266/35, 36 P, 36 R, 39
  • the converter vessel For charging, blasting, removing slag, casting and lining, the converter vessel must be tiltable. As a result, a deformation, although not a permanent deformation, appears because of the relatively thin wall of the vessel and depending on the inclined position.
  • a completely rigid support of the vessel results in such thermal stresses that material cracks are unavoidable.
  • the statically determined support has the great advantage that fewer pivotal points are required, although the latter must have a corresponding operating safety and the required service life.
  • This invention relates to the support of metallurgical vessels, such and/or tiltable and/or revolving steel mill converters, and, more particularly, to an improved supporting arrangement for. supporting such a vessel from a supporting ring through the medium of straps secured in heat conducting relation to the vessel.
  • the present invention is directed to improving the elastic connection between the vessel wall and the supporting ring or rings, and to take into consideration the possibility of free heat expansions as a superposition in radial and axial directions.
  • the invention also takes into account the various positions of a tiltable vessel in which the essential causes of wear must be eliminated in advance.
  • the supporting ring surrounding the vessel is provided with hinge-like fastening points for connecting screws or bolts which can be displaced in a radial plane, and whose other ends are connected to projections of the vessel wall, also in a hinge-like manner.
  • the initial consideration is that both the radial expansion and an axial expansion act as the main forces. These forces can vary, however, from zone-to-zone of the vessel circumference. For example, for reasons mentioned above, a temperature difference between two opposite sides of the converter is possible, and which results in a unilateral expansion.
  • the arrangement of the invention has the effect that the pivotal points of the connecting screws can be quite irregular in their movements.
  • a supporting ring spaced from the vessel expands far less, because of the considerable difference, than a ring bearing on the vessel and in heat conductive contact therewith.
  • projections secured on the vessel shell can perform torsion-like movements, and the connecting screws must follow this distortion to a far greater extent at their ends connected to the vessel than at their ends connected to the supporting ring.
  • the arrangement of the present invention thus provides for expansion of connecting screw fulcrums to take place at different rates and to different extents.
  • the connecting screws pass loosely through their fastening points, and their projections at their ring ends and on their vessel shell ends have end faces engaged with respective nuts in spherically shaped bearing disks.
  • the size and accessibility of the fastening points and engaging points, respectively, of the forces on the ring and those on the vessel wall, can be easily improved without departing from the principal feature of the invention which is to transmit the force only at the pivotal points and to design the connecting screws as favorably as possible. That is, to design these screws so that they are stressed solely in tension.
  • the connecting screws can be advantageously designed, as the principal requirement of expansion screws is expansion.
  • the moving connections designed as spherical shaped bearing members, offer the possibility of performing movements on a spherical shell, a slight deviation in the form of two superposed surfaces providing for the introduction of a heat-resistant lubricant between these surfaces and its retention during operation.
  • Another feature of the invention is the provision of additional spherical-shaped spacing disks, in relatively slidable relation with each other, between the fastening or anchoring points or projections on both the supporting ring and the vessel shell, the connecting screws extending through the spacing disks.
  • the invention also provides for absorbing, in any manner, tensile or compressive forces, depending on the inclination of the vessel.
  • An advantageous feature is that the tilting direction of the metallurgical vessel or the like can be selected to proceed in either direction.
  • the force patterns in the material extend in a known manner, so that the invention arrangement can be used particularly easily, in practice, by virtue of exact calculation of the forces.
  • the expansion screw connection supported in ball sockets between the supporting ring fastening portions and the projections on the shell of the vessel, is provided at both sides of the radial axis of symmetry of the vessel considered in a horizontal direction.
  • the extent of the heat expansion increases considerably.
  • the present invention is also based on the concept of maintaining the size of the factor length, introduced into the calculation, as small as possible. In the present invention, this is attained by forming the fastening parts, between the vessel shell and the supporting ring, as short as possible, thus not providing any long reference dimensions as would be the case with a substantial spacing between two straps.
  • the invention solution to the problem of supporting a metallurgical vessel or container departs completely from the principle of the strap support, and replaces this principle by a new one, which is namely that of a short hinge connection. This results in the additional advantage of being able to work with only slight heat expansion differences.
  • An object of the present invention is to provide an improved supporting arrangement for metallurgical vessels, particularly tiltable and/or revolving steel mill converters.
  • Another object of the invention is to provide such a supporting arrangement providing for substantially universal displacement of connecting elements between a supporting ring and a vessel supported by the supporting ring.
  • a further object of the invention is to provide such a supporting arrangement including expansion screws interconnecting the supporting ring and the vessel and passing loosely through fastening points and projecting therebeyond on either end.
  • Still another object of the invention is to provide such a supporting arrangement in which the projecting ends of the expansion screws or bolts are provided with spherically shaped bearing disks interposed between their associated nuts and the connecting portions of the supporting ring and the vessel.
  • a further object of the invention is to provide such a supporting arrangement including additional spherical-shaped spacing disks associated with the expansion bolts or screws and having sliding engagement with each other.
  • Another object of the invention is to provide such a supporting arrangement characterized by relatively short fastening or securing parts extending between the vessel shell and its supporting ring.
  • a further object of the invention is to provide such a supporting arrangement which is capable of working with only very slight heat expansion differences.
  • FIG. 1 is a partial side elevation view of a converter embodying the support arrangement of the invention, the end sections of the converter being omitted for the sake of clarity;
  • FIG. 2 is a horizontal or diametric sectional view through the converter shown in FIG. 1;
  • FIG. 3 is a side elevation view, looking from the left of FIG.
  • FIG. 4 is a view, similar to FIG. 2, illustrating a modification of the invention.
  • FIG. 5 is a sectional view taken on the line V-V of FIG. 4.
  • the converter vessel 1 has secured thereto so-called claw or strap rings 2, 3, 5 and 6.
  • Rings 2 and 3 are arranged above a supporting ring 4, and rings 5 and 6 are arranged beneath supporting ring 4.
  • Ribs 7 form connections between rings 2 and 3 and between rings 5 and 6, providing suitable means for securing the rings 2, 3, 5 and 6 to the vessel shell as by means of welded seams, threaded joints, and the like.
  • Rings 3 and 5 have bearing engagement with the surfaces 10 of supporting ring 4 through the medium of abutments 8 secured on rings 3 and 5 and intermediate layers or shims 9 interposed between abutments 8 and the surfaces 10 of supporting ring 4.
  • rings 2, 3, 5 and 6 have additional reinforcement members 11 extending between the rings and the wall of the vessel 1.
  • a compact ring surface is formed under which are arranged the intermediate layers or shims 9 and the abutments 8.
  • the abutments 8 and layers or shims are additionally limited against displacement by laterally arranged projections or abutments 12, with bars 13 being inserted between projections 12 and abutments 8. These bars 13 are, as mentioned above, inserted with a certain play or relatively loosely.
  • the support thus provided serves substantially for securing of the vessel 1 against axial displacement, but the vessel can move, in a certain range, because there is no rigid connection extending radially and axially between abutments 8 and projections 12.
  • this loose support of vessel 1 on supporting ring 4 is restrained or constricted by an expansion screw or bolt connection.
  • projections 14 are arranged on rings 2, 3, 5 and 6, and are rigidly connected to these rings as by welding at 15 and through bracing ribs 16. The projections 14 consequently form elements on the vessel shell whose heat expansion is influenced substantially by the thickness of the vessel shell.
  • supporting ring 4 has a housing construction 17 formed of several walls 18 and designed, for example, by welding, as a continuous or integral fastening member which projects both upwardly and downwardly from supporting ring 4. Ring 4 thus provides, on both its upper side and its under side, support for the projections 14 on the shell of vessel 1.
  • Each projection 14 on the shell of the vessel is formed with a bore or aperture 20 extending completely therethrough, and the apertures 20 in projections 14 are aligned with apertures 20 extending completely through the support 17 forming a passage between the walls 18 of member 19.
  • Threaded expansion or tension members 21, such as studs or screws, extend through the aligned bores 20 and have nuts 22 secured to opposite ends thereof, spherically shaped pairs of supporting disks or washers 23 and 24 being interposed between one nut 22 and supporting member 19, the other nut 22 and a projection 14, and between projection 14 and the support 19.
  • expansion members 21 can be displaced, through the medium of the spherically shaped supporting disks or washers 23 and 24, in a radial plane in respect to the axis 25 of the vessel 1.
  • the expansion members 21 are arranged on both sides of the radial plane of symmetry 26 of vessel 1, so that the lateral play provided for the bars 13 can be cancelled.
  • the invention support thus has sufficient rigidity without offering, however, any resistance to heat expansion of vessel 1 and heat expansion of supporting ring 4.
  • a heat-resistant lubricant in powder form such as graphite or similar mixtures, to the surfaces of the spherically shaped supporting disks 23 and 24. Thereby tension transmitted by expansion members 21, with resulting friction between the supporting disks or washers 23 and 24, can be readily overcome.
  • housing construction 17 and projection 14 form, together with the supporting disks or washers 23 and 24, a closed unit, there is no longer any free play at any point of the support between converter 1 and supporting ring 4, so that excessive movement during erection of converter 1 is effectively prevented.
  • the arrangement of a pair of expansion members 21 on either side of the axis of symmetry 26 of vessel 1 is generally sufficient. However, several such expansion members can be provided for larger vessels, and particularly three expansion members to provide a statically determined support.
  • FIG. 4 illustrates a variation wherein expansion members 27, extending parallel to the axis 25 of vessel 1, can be provided between the rings 2 and 3 and the rings 5 and 6, respectively.
  • the invention can also be applied with advantage notonly in a horizontal plane, but also in planes parallel to the main axis of the vessel.
  • slots 28 are provided in the claw or strap ring secured to the vessel 1, and similar slots 29 are provided on the upper side of supporting ring 4.
  • Threaded expansion members 27 extend through these slots, having nuts secured to opposite ends thereof.
  • spherically shaped supporting disks or washers 23 and 24 are interposed between the nuts and the adjacent bearing surfaces so that vessel 1 can perform a swinging movement about the underside of supporting ring 4, as at 31.
  • Spherically shaped supporting disks 23 and 24 are provided at the location 31 so that a movable joint is formed.
  • the invention support arrangement can be applied in several variations, particularly with respect to the arrangement of the expansion member connections on the cir cumference of the vessel and insofar as position and number of the expansion members are concerned.
  • a supporting arrangement for vessels used in metallurgical processing involving heat such as tiltable, revolvable and tiltable and revolvable steelmill converters, of the type in which the vessel is supported in at least one supporting ring
  • said supporting arrangement comprising, in combination, support elements secured on the vessel wall and supporting the vessel on at least one axial end face of a supporting ring when the vessel is in an upright position; at least one first apertured projection member on the associated supporting ring; at least one second apertured projection member on the vessel wall; the apertures of associated first and second projection members being substantially aligned; respective tension rods extending through the apertures of associated first and second projection members and projecting beyond the two associated member, fastening means on the projecting ends of each rod cooperable with the two associated projection members to prestress the respective rods in tension when said vessel is in said upright position; and bearing means on the opposite projecting ends of each tension rod and engaged at least between the adjacent projection member and the adjacent fastening means to transmit tension stresses of the associated tension rod; said tension rods extending in
  • a supporting arrangement for vessels used in metallurgical processing involving heat as claimed in claim 1, in which each tension rod extends through its associated apertures loosely and with play.
  • a supporting arrangement for vessels used in metallurgical processing involving heat such as tiltable, revolvable and tiltable and revolvable steelmill converters, of the type in which the vessel is supported in at least one supporting ring, surrounding the vessel, through the medium of support elements secured on the vessel wall, said supporting arrangement comprising, in combination, first means forming at least one hinge-like first fastening point on each supporting ring; second means forming at least one hinge-like second fastening point on each support element; and connecting elements extending between each first fastening point and a respective second fastening point, and displaceable radially of the supported vessel through the articulation provided by said fastening points; each first means includes a first apertured projection on the associated supporting ring, and each second means including a second apertured projection on the associated support element; each connecting element extending through substantially aligned apertures in the associated first and second projections; each connecting element extending through its associated apertures loosely and with play.
  • a supporting arrangement for vessels used in metallurgical processing involving heat as claimed in claim 3, including spherically shaped annular disks interposed between each associated first and second projection and embracing the associated connecting element.
  • each threaded connecting element, the nuts threaded on opposite ends thereof, and the spherically shaped annular disks associated therewith constitute a connection unit; said connection units being arranged in pairs, and the connection units of each pair being disposed on opposite sides of the axis of symmetry of the supported vessel.
  • a supporting arrangement for vessels used in metallurgical processing involving heat as claimed in claim 5, in which said support elements comprise rings secured to said vessel in heat conductive relation therewith and disposed on axially opposite sides of each supporting ring; and additional connection units interconnecting said last-named rings and extending parallel to the axis of symmetry of said vessel.
  • a supporting arrangement for vessels used in metallurgical processing involving heast as claimed in claim 5, in which said support elements comprise rings secured to said vessel in heat conductive relation therewith on axially opposite sides of said supporting ring; and additional connection units extending between said supporting ring and said last-named rings and parallel to the axis of symmetry of said vessel.
  • a supporting arrangement for vessels used in metallurgical processing involving heat such as tiltable, revolvable and tiltable and revolvable steelmill converters, of the type in which the vessel is supported in at least one supporting ring, surrounding the vessel, through the medium of support elements secured on the vessel wall, said supporting arrangement comprising, in combination, first means forming at least one hinge-like first fastening point on each supporting ring; second means forming at least one hinge-like second fastening point ment; each connecting element extending through substantially aligned apertures in the associated first and second projections; said connecting elements being arranged in pairs, the connecting elements of each pair being positioned on opposite sides of the axis of symmetry of the supported vessel.

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)
US98016A 1967-07-01 1970-12-14 Support arrangement for metallurgical vessel such as steel mill converter Expired - Lifetime US3652072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0053503 1967-07-01

Publications (1)

Publication Number Publication Date
US3652072A true US3652072A (en) 1972-03-28

Family

ID=7055033

Family Applications (1)

Application Number Title Priority Date Filing Date
US98016A Expired - Lifetime US3652072A (en) 1967-07-01 1970-12-14 Support arrangement for metallurgical vessel such as steel mill converter

Country Status (10)

Country Link
US (1) US3652072A (pm)
JP (1) JPS4827167B1 (pm)
AT (1) AT278066B (pm)
BE (1) BE716069A (pm)
DE (1) DE1583232B1 (pm)
ES (1) ES349815A1 (pm)
FR (1) FR1550949A (pm)
GB (1) GB1218442A (pm)
NL (1) NL162963C (pm)
SE (1) SE372288B (pm)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096918A (en) * 1976-02-05 1978-06-27 Demag Aktiengesellschaft Metallurgical vat support system
US4191364A (en) * 1978-04-20 1980-03-04 Pennsylvania Engineering Corporation Support for metallurgical vessels
US5143683A (en) * 1991-06-18 1992-09-01 Bethlehem Steel Corporation Protective shield having heat conductive properties
CN102392099A (zh) * 2011-11-14 2012-03-28 中冶建工集团有限公司 大型转炉托圈炉壳吊板连接调校对中装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739540C3 (de) * 1977-09-02 1983-11-03 Winfried 5963 Wenden Burkhard Tragringlagerung für ein metallurgisches Gefäß
US4273316A (en) * 1979-07-27 1981-06-16 Pennsylvania Engineering Corporation Metallurgical vessel suspension system
SE515144C2 (sv) * 1997-05-23 2001-06-18 Boliden Contech Ab Metallurgisk ugnsenhet och toppblåst roterkonverter
DE10251964A1 (de) * 2002-11-08 2004-05-19 Sms Demag Ag Schnellwechselbefestigung von metallurgischen Behandlungsgefäßen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146983A (en) * 1961-11-08 1964-09-01 Chicago Bridge & Iron Co Mounting for invertible vessel
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
US3391919A (en) * 1966-03-17 1968-07-09 Birdsboro Corp Converter vessel support
US3400922A (en) * 1965-04-12 1968-09-10 Demag Ag Metallurgical vessel construction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE664291A (pm) *
DE1827038U (de) * 1959-01-22 1961-02-23 Pintsch Bamag Ag Sicherheitseinrichtung zum verbinden und loesen teilbarer, unter waermespannung der ausmauerung stehender schwerer metallurgischer gefaesse.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146983A (en) * 1961-11-08 1964-09-01 Chicago Bridge & Iron Co Mounting for invertible vessel
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
US3400922A (en) * 1965-04-12 1968-09-10 Demag Ag Metallurgical vessel construction
US3391919A (en) * 1966-03-17 1968-07-09 Birdsboro Corp Converter vessel support

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096918A (en) * 1976-02-05 1978-06-27 Demag Aktiengesellschaft Metallurgical vat support system
US4191364A (en) * 1978-04-20 1980-03-04 Pennsylvania Engineering Corporation Support for metallurgical vessels
US5143683A (en) * 1991-06-18 1992-09-01 Bethlehem Steel Corporation Protective shield having heat conductive properties
CN102392099A (zh) * 2011-11-14 2012-03-28 中冶建工集团有限公司 大型转炉托圈炉壳吊板连接调校对中装置

Also Published As

Publication number Publication date
NL6717587A (pm) 1969-01-03
BE716069A (pm) 1968-11-04
SE372288B (pm) 1974-12-16
GB1218442A (en) 1971-01-06
FR1550949A (pm) 1968-12-20
AT278066B (de) 1970-01-26
NL162963C (nl) 1980-07-15
JPS4827167B1 (pm) 1973-08-20
DE1583232B1 (de) 1971-06-09
ES349815A1 (es) 1969-04-01

Similar Documents

Publication Publication Date Title
US3652072A (en) Support arrangement for metallurgical vessel such as steel mill converter
KR920000350B1 (ko) 야금 제련유니트용의 장입물을 예열하기 위한 장입물 예열기
CA2104407C (en) Tiltable converter
EP2852692B1 (en) Suspension device for tilting oxygen converters and converter provided with said suspension device
FI66552B (fi) Vridslidtillslutning foer metallurgiska kaerl
US4115194A (en) Reactor pressure vessel support
US3163696A (en) Arrangement for tiltable furnaces
RU2614225C2 (ru) Наклоняемый конвертер
US3561744A (en) Stabilized mounting for boflike vessels
US3536310A (en) Mounting for a tiltable converter
US3182979A (en) Furnace support structure
CA2261166C (en) A metallurgical furnace unit
AU7650700A (en) Copper cooling plate for metallurgical furnaces
US3601383A (en) Supporting arrangement for vessels used in metallurgical processing involving heat
US3711077A (en) Stabilized mounting for molten metal vessels
US3756583A (en) Molten metal vessel suspension system
US3502314A (en) Tiltable crucible or converter for refining pig iron
US3586304A (en) Furnace cooling system
US3572674A (en) Tiltable support frame for a metallurgical vessel
US3653649A (en) Support assembly for a tiltable hot metal processing vessel
US3400603A (en) Torque resisting system
CA1073669A (en) Cooling assembly for metallurgical vessels
US3717333A (en) Device for the connection between a crucible and a supporting ring
US4121811A (en) Metallurgical vessel suspension system
US3559972A (en) Furnace apparatus