US3784178A - Tiltable foundry converter for treatment and storage of molten metal - Google Patents

Tiltable foundry converter for treatment and storage of molten metal Download PDF

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Publication number
US3784178A
US3784178A US00247741A US3784178DA US3784178A US 3784178 A US3784178 A US 3784178A US 00247741 A US00247741 A US 00247741A US 3784178D A US3784178D A US 3784178DA US 3784178 A US3784178 A US 3784178A
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United States
Prior art keywords
arms
converter
vessel
pivot
power lift
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Expired - Lifetime
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US00247741A
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English (en)
Inventor
M Wernli
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Georg Fischer AG
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Georg Fischer AG
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Publication date
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Publication of US3784178A publication Critical patent/US3784178A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/06—Equipment for tilting

Definitions

  • ABSTRACT A generally cylindrical foundry converter, located normally about a horizontal axis, is pivotally secured to a pair of arms at intermediate points thereof. The forward ends of the arms pivot about a support, the rearward ends of the arms are abutted against the support, but free to be lifted therefrom.
  • a first power lift means is connected between the converter vessel and the arms to effect tilting movement of the converter vessel with the arms stationary, to place the converter in a vertical position for treatment of metal contained therein with additives;
  • a second power lift means is connected between the arms and the base support to lift and tilt the entire converter vessel together with the arms forwardly, so that molten metal in the converter can be poured out of the mouth opening 9 Claims, 2 Drawing Figures PATENTED JAN 8 4 'SHEET 1 n? z TILTAIBLE FOUNDRY CONVERTER FOR TREATMENT AND STORAGE OF MOLTEN METAL Cross reference to related application: U.S. Ser. 245,457, filed Apr. 19, I972.
  • the present invention relates to a tiltable foundry converter, and more particularly to a converter in which molten metal can be treated by contacting the molten metal contained in the converter with different zones of the interior thereof.
  • tipping or tilting apparatus for an induction furnace having three tipping or tilting pivots.
  • the tipping pivots are formed by insertable pivot pins which can be inserted, as desired, as shafts in pivots provided therefor.
  • the pivot points, or pivot bearings are secured with their movable part to an induction furnace, and with their fixed part to the support carrying the entire apparatus.
  • This arrangement has the disadvantage that change of the tipping movement, that is, change of the pivot location from one pivot point to another is difficult and comparatively time consuming.
  • a foundry bucket, or similar container has a pair of fixed pivot pins or rods which are connected to a tipping apparatus which is movably connected to a support.
  • Each of the two pivot pins has a forked bearing associated therewith, so that one pivot pin can be lifted off the bearing when the other acts as the actual pivot point.
  • Such bearings are not protected from dirt or contamination and thus are subject to excessive wear and tear.
  • both of the known embodiments do not permit the level of pouring from the bucket or converter to remain constant, as the container is being tipped, which impairs casting and foundry operations.
  • a foundry bucket is readily exchangeable, but can be tipped only to one side, however.
  • a pair of arms are located alongside a converter vessel which is, preferably, generally cylindrical.
  • the converter vessel is pivoted to the arms at an intermediate point of the length thereof.
  • the arms themselves are pivoted at one end on a support, and bear with their other end against an abutment on the support.
  • a first power lift apparatus such as a hydraulic cylinder-piston arrangement engages the converter vessel on the other hand and bears against the arms, to effect tilting of the converter with respect to the arms, for example to tilt the vessel from a generally horizontal to a generally vertical direction;
  • a second power lift apparatus is connected between the arms and the base support of the apparatus to effect lifting and tilting movement of the converter vessel, so that liquid metal therein can be poured out.
  • the mouth of the converter vessel is preferably located close to the pivot point of the arms, so that, as the converter is tilted, the pouring position from the converter will not change materially, thus facilitating casting of liquid metal into molds.
  • FIG. I is a schematic side view of the apparatus showing the lifting mechanism thereof.
  • FIG. 2 is a front end view, schematically, and omitting elements not necessary to an understanding of the invention.
  • the vessel which is to contain molten metal is shown as a converter 1.
  • a collar 24 is secured to the converter vessel, so'that the converter 1, which is essentially cylindrical, can be centered within a frame 21, to which it is removably interconnected by means of screws 23.
  • Converter 1 is centered within frame 21 by means of a plurality of centering pins 22 which engage corre sponding bores in collar 24.
  • Diametrically oppositely located pivot pins 3 are provided at the sides of frame 21, located in a plane perpendicular to the axis of converter l.
  • a pair of arms 2, 2' (FIGS. 1, 2) are located on re- -spective opposite sides of converter 1.
  • the arms are formed with suitable bearings in which the pivot pins 3' can engage, so that the converter 1 can tilt or tip over a first axis 3.
  • Arms 2, 2, together with cross bars 20, 20' (FIG. 2) form a frame which essentially surrounds the converter 1.
  • One end 7 of arms 2, 2' is pivotally connected with an upstanding bracket 8 secured to a base support 9.
  • the pivotal connection is over a second horizontal axis 10.
  • the other end 11 of the arms 2, 2' abuts on a weighing arrangement 12, for example in the form ofa pressure transducer diaphragm, or other similar pressure gauge which, in turn, bears against the base support 9.
  • Base support 9 preferably is movable and supplied with wheels or the like, as schematically indicated.
  • a bracket 17 having a bore 18 is located on the arms 2, 2, spaced from the second pivot axis 10.
  • a pin 19, secured to a rod i3 is engaged in bore 18, rod 13 forming part of a lifting arrangement, such as a hydraulic piston-cylinder unit.
  • Pin 13 and bore 18 form a joint 16 which permits not only pivoting but also slight transverse movement, by forming hole 18 as an elongated, oval opening (FIG. 1).
  • the other end 15 of the lifting assembly 14 is connected by means of a pin 25 with a bearing block 26 secured to the base support 9 so that the lifting unit 14 can pivot with respect to the base support 9.
  • a bracket 27 is secured to the frame 21 spaced from the pivot axis 3.
  • a lifting assembly 5 has its rod 4 pivoted, at 28, to the bracket 27.
  • the other end of the lifting assembly 5 is pivoted to a bearing 29 which is connected to arms 2, 2, respectively.
  • the arms 2, 2 are upwardly bent, or offset in order to provide the necessary space for lifting assembly 5.
  • the converter 1 is formed with an inlet and outlet opening A at the front end thereof, normally closed by a cover; a second opening B, at the rear end is provided through which treatment materials, such as magnesium to form ductile cast iron with graphite in spherical form, can be introduced,
  • This tilting motion is effected by extending the lifting assembly 5, that is, by pushing the bracket 27, and hence frame 21 with respect to the arms 2, 2, and tilting the converter into an essentially vertical position, that is, with its major axis extending vertically.
  • the power lift assembly 5 is brought back to the position shown in full lines in FIG. 1.
  • the power lift assembly 14 is extended. Since power lift assembly 14 bears, on the one hand, against the arms which support the converter and on the other against the base support 9, the ends 11 of the arms will lift off the abutment 12, and bring the converter in the position shown in chain-dotted lines at 35. Opening the closure at the mouth will now permit pouring off of liquid metal from the vessel 1.
  • the pressure or weighing unit 12 is used to determine the amount of liquid which is introduced into the vessel, so that a predetermined liquid level can be established therein to permit accurately establishing the relative amounts of additives to be introduced through closable opening B with respect to the amount of molten metal introduced into the converter through opening A.
  • the structure in accordance with the present invention has the specific advantage that a relatively uniform pouring level is obtained, and the converter 1 can be tilted in two directions, that is, with the mouth A upwardly, or downwardly, within a minimum space, and without causing turbulence or waves within the liquid melt in the container.
  • the arrangement of the lifting assemblies is such that the tipping direction can be accurately but independently controlled, while avoiding the use of open bearings which are subject to wear.
  • Tiltable foundry converter for treatment and storage of molten metal comprising a base support (9);
  • pivot means (10) pivotally connecting one end (7) of the arms and the base support (9);
  • abutment means (12) releasably supporting the other end (11) of the arms on the base support (9);
  • first power lift means (5) connected between the converter vessel (1) and the arms (2, 2) to effect tilting movement of the converter vessel with respect to the arms;
  • second power lift means (14) connected between the arms (2, 2) and the base support (9) to effect lifting and tilting movement of the converter vessel by lifting the arms off the abutment means and hence lifting the vessel to permit outflow of metal therefrom under gravity, and tilting of the vessel about said movable interconnection means between the arms and the vessel;
  • pivot joint (16) interconnecting the second power lift means (14) and the arms, said pivot joint including a pivot pin (19) and an elongated pivot hole (28).
  • Apparatus according to claim 1 comprising a bracket (17) secured to each of the arms (2, 2), said bracket being formed with the elongated pivot hole (18).
  • Apparatus according to claim 1 comprising cross members (20, 20') interconnecting the arms (2, 2) at each side of the vessel to form, with the arms, a frame essentially surrounding the converter vessel.
  • pivot means (3') interconnecting the frame and the arms at each side of the vessel
  • the base support comprises an upstanding bracket (8), the said one end (7) of the arms being pivotally supported (10) at the upper end of said bracket.
  • the converter is essentially cylindrical and supported with the cylinder extending along an essentially horizontal axis, the forward end being proximate to the upstanding bracket and being formed with an upwardly projecting mouth portion located adjacent the pivotal support at the upper end of said bracket whereby, upon extension of said second power lift means (14), the converter vessel will be tipped about said pivotal support and the lower edge of the mouth portion will remain essentially in the same plane during said tipping motion.
  • the first power lift means (5) engages the converter vessel at a point below the central axis thereof to effect upward tilting about the pivot upon extension of the power lift means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ink Jet (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US00247741A 1971-04-29 1972-04-26 Tiltable foundry converter for treatment and storage of molten metal Expired - Lifetime US3784178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH630471A CH528319A (de) 1971-04-29 1971-04-29 Kippvorrichtung für einen Giessbehälter

Publications (1)

Publication Number Publication Date
US3784178A true US3784178A (en) 1974-01-08

Family

ID=4307419

Family Applications (1)

Application Number Title Priority Date Filing Date
US00247741A Expired - Lifetime US3784178A (en) 1971-04-29 1972-04-26 Tiltable foundry converter for treatment and storage of molten metal

Country Status (17)

Country Link
US (1) US3784178A (ja)
JP (1) JPS5128246B1 (ja)
AU (1) AU475389B2 (ja)
CA (1) CA963653A (ja)
CH (1) CH528319A (ja)
CS (1) CS181223B2 (ja)
DD (1) DD96037A5 (ja)
DE (1) DE2215416C3 (ja)
FI (1) FI52872C (ja)
FR (1) FR2134595B1 (ja)
GB (1) GB1387753A (ja)
IT (1) IT959646B (ja)
PL (1) PL82351B1 (ja)
RO (1) RO59238A (ja)
SE (1) SE397839B (ja)
SU (1) SU420188A3 (ja)
ZA (1) ZA722687B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280688A (en) * 1978-11-10 1981-07-28 Voest-Alpine Aktiengesellschaft Tiltable converter arrangement
US4817919A (en) * 1982-06-07 1989-04-04 George Fischer Limited Device for casting, particularly converter for casting and/or post-treating molten metal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310298A (en) * 1963-09-30 1967-03-21 Bbc Brown Boveri & Cie Tiltable furnace mounts
US3531074A (en) * 1968-03-18 1970-09-29 Inductotherm Corp Tilting and supporting apparatus for foundry vessels
US3648758A (en) * 1969-11-07 1972-03-14 Demag Ag Apparatus for the production of copper anode plates

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310298A (en) * 1963-09-30 1967-03-21 Bbc Brown Boveri & Cie Tiltable furnace mounts
US3531074A (en) * 1968-03-18 1970-09-29 Inductotherm Corp Tilting and supporting apparatus for foundry vessels
US3648758A (en) * 1969-11-07 1972-03-14 Demag Ag Apparatus for the production of copper anode plates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280688A (en) * 1978-11-10 1981-07-28 Voest-Alpine Aktiengesellschaft Tiltable converter arrangement
US4817919A (en) * 1982-06-07 1989-04-04 George Fischer Limited Device for casting, particularly converter for casting and/or post-treating molten metal

Also Published As

Publication number Publication date
CA963653A (en) 1975-03-04
FI52872C (fi) 1977-12-12
DE2215416B2 (de) 1973-04-26
SE397839B (sv) 1977-11-21
FI52872B (ja) 1977-08-31
DE2215416C3 (de) 1973-11-15
AU475389B2 (en) 1976-08-19
DD96037A5 (ja) 1973-03-05
PL82351B1 (ja) 1975-10-31
CH528319A (de) 1972-09-30
GB1387753A (en) 1975-03-19
AU4152072A (en) 1973-11-01
DE2215416A1 (de) 1972-11-23
ZA722687B (en) 1973-01-31
CS181223B2 (en) 1978-03-31
SU420188A3 (ja) 1974-03-15
FR2134595B1 (ja) 1978-03-03
JPS5128246B1 (ja) 1976-08-18
IT959646B (it) 1973-11-10
FR2134595A1 (ja) 1972-12-08
RO59238A (ja) 1976-01-15

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