US3839591A - Furnace for electroslag melting of metal ingots - Google Patents

Furnace for electroslag melting of metal ingots Download PDF

Info

Publication number
US3839591A
US3839591A US00409447A US40944773A US3839591A US 3839591 A US3839591 A US 3839591A US 00409447 A US00409447 A US 00409447A US 40944773 A US40944773 A US 40944773A US 3839591 A US3839591 A US 3839591A
Authority
US
United States
Prior art keywords
furnace
carriages
electrode holders
electrode
melting
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
US00409447A
Other languages
English (en)
Inventor
A Bogachenko
O Bondarenko
V Saenko
A Tsykulenko
B Paton
B Medovar
J Alferov
G Schupak
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3839591A publication Critical patent/US3839591A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/60—Heating arrangements wherein the heating current flows through granular powdered or fluid material, e.g. for salt-bath furnace, electrolytic heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H05B7/101—Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc
    • H05B7/102—Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc specially adapted for consumable electrodes

Definitions

  • Izrailevich Medovar ulitsa A. Barbjusa, 22/26, kv. 109; Jury Fedorovich Alferov, bulvar Lepse, 29, kv. 64;Grigory Bentsionovich Schupak, ulitsa Chudn0vskog0,7, kv.61; Alexei Georgievich Bogachenko, ulitsa Miljutenko, 15/2, kv. 141; Oleg Petrovich Bondarenko, ulitsa Kreschatik, 15,
  • the present invention relates to furnaces for the electroslag melting of metal ingots employed in electrometallurgy, preferably for melting ingots to be further rolled into sheets the ingots being referred to hereinafter as slab ingots.
  • a furnace for the electroslag melting of metal ingots comprising at least a pair of stringers with electric holder carriages fastened thereto, the carriages being furnished with drives for vertical transfer of consumable electrodes remelted into the ingot which is shaped in a cooled mould.
  • the above furnaces are employed for remelting one or two consumable electrodes according to electrodebase plate and electrode-electrode" circuits.
  • the principal object of the invention is the provision of a furnace for electroslag melting of metal ingots which will provide for the melting of both large-size slab ingots and those in a medium and small weight range.
  • Another, but no less important, object of the invention is to provide a furnace which will be capable of operating concurrently with a single or a plurality of electrode holders when using one or several cooled moulds.
  • Still another object of the invention is the provision of a possibility of holding in place additional electrodes to be arranged intermediate of the adjacent electrode holders of the furnace.
  • the main object of the present invention is to provide for the transfer of the electrode holders in a horizontal direction for mounting the consumable electrodes of different cross-sections therebetween as well as the possibility of carrying the consumable electrodes along the slag bath when melting ingots by feeding the electrodes with the help of two electrode holders into a single common mould.
  • a furnace for the electroslag melting of metal ingots comprising at least a pair of stringers with electrode holder carriages secured thereto and furnished with drives adapted for vertical transfer of both the carriages and consumable electrodes to be remelted into the ingot being shaped in a cooled mould, which furnace, according to the invention, is fitted with current-carrying plates fastened to the sides of the adl0 joining electrode holders facing each other with the plates forming a seat for holding in place at least one additional consumable electrode, with the drives adapted for vertical transfer of the electrode holder carriages being aligned axially and facing each other with the free ends of their shafts on which engageable halfcouplings are mounted.
  • the above furnace furnished with at least two electrode holders with the current-carrying plates fastened to the electrode holders, and with the drives arranged appropriately and fitted with the half-couplings ensure the melting of slab ingots up to t. in weight without any noticeable decrease in the furnace efficiency when changing over to the melting of the ingots of any other typesize, providing in the meantime an optimum for the particular ingot fiowsheet.
  • the presence of the seat located intermediate of the two electrode holders, and of the half-couplings mounted on the output drive shafts of the electrode holder carriages enables the total capacity of the drives to be utilized for the melting, according to an electrode-electrode and electrode-base plate circuit, of the entire range of the ingots exceeding in weight those melted out with the aid of a single electrode holder.
  • each carriage mount horizontal slide-ways with the electrode holders installed therein and be fitted with additional drives adapted to carry the electrode holders along the slideways.
  • the transfer of the electrode holders with the current-carrying plates in a horizontal direction allows anchoringthe consumable electrodes of different crosssection at the seat and carrying them along the slag bath during the melting process simultaneously with the electrodes fastened to the adjoining electrode holders.
  • the furnace can be equipped with carriages for the cooled moulds, each carriage being mounted on a corresponding stringer and fitted with a vertical transfer drive aligned axially and facing each other with the free ends of their shafts on which the half-couplings are engageably mounted.
  • the total capacity of the two mould transfer drives can be used for melting the slab ingots superior in weight to those which could have been melted by making use of the capacity of a single drive.
  • FIG. 1 shows a front view of the furnace with two electrode holders whose engageable drives serve to hold in place an additional consumable electrode arranged in a seat located intermediate of the above electrode holders;
  • FIG. 2 is a section view taken along the line "-11 of FIG. 1;
  • FIG. 3 depicts a front view of the furnace with the electrode holders between which a consumable electrode of considerable dimensions is positioned;
  • FIG. 4 is a front view of the furnace with the extreme and central electrode holders mounting the consumable electrodes held in place by the combined drives;
  • FIG. 5 is a front view of a furnace with the extreme electrode holders carrying the consumable electrodes
  • FIG. 6 shows a front view of a furnace with the electrode holder carriage drives disengaged for melting ingots alternately in different moulds and;
  • FIG. 7 is a back view of a furnace with the drives of the electrode holder carriages and moulds furnished with halfcouplings.
  • a furnace for the electroslag melting of ingots 1 (FIG. 1) comprises two stringers 2 and 3 with each of them mounting a single carriage 4 and 5 in such a manner that they are capable of moving along the appropriate stringer.
  • Drives 6 and 7 for vertical transfer of the carriages 4 and 5 of the electrode holders 8 and 9 are aligned axially and face each other with the free ends of shafts 10 and 11 with half-couplings 12 and 13 being held 'to each shaft.
  • Each carriage 4 and 5 carries horizontal slideways 14 and 15, 16 and 17 (FIG. 2) in which the electrode holders 8 and 9 (FIG. 1) are mounted.
  • the carriages 4 and 5 are fitted with additional drives 18 and 19 adapted to transfer the electrode holders 8 and 9 in the abovementioned horizontal slideways.
  • the consumable electrode 30 (FIG. 3) being remelted has considerable dimensions, it can be positioned intermediate of the electrode holders 8 and 9 anchored at the carriages 4 and 5 with the engageable drives 6 and 7.
  • the cooled mould 27 can be mounted on carriages 31 and 32 (FIG. 7), each one of the carriages being set up on the appropriate stringer 2 and 3, so as to allow its transfer along the stringer.
  • their drives 33 and 34 are aligned axially and fitted with half-couplings 35 and 36 put on the free ends of shafts 37 and 38 facing each other.
  • the consumable electrodes 23 and 24 (FIG. 5) can be attached to the electrode holders 8 and 9 with the half-couplings 12 and 13 being disengaged.
  • one of the consumable electrodes 24 (FIG. 4) is clamped in the electrode holder 9 and the other one in the seat formed by the current-carrying plates 20 and 21 fastened to the sides of the adjoining electrode holders 8 and 9.
  • the drives 18 and 19 ensure relative motion of the electrode holders 8 and 9 in a horizontal direction.
  • the furnace operates in the following manner.
  • the base plate 26 is set up on the carriage 25 (FIG. 1) for the rolling off of the ingots, with the cooled mould 27 being set up on the base plate 26. Next a slag bath 29 is established.
  • An electric current is passed from a current supply source (not shown in the drawing) to consumable electrodes 22-24.
  • a current supply source not shown in the drawing
  • the half-couplings 12 and 13 of the drives 6 and 7 of the electrode holders 8 and 9 as well as the half-couplings 35 and 36 of the drives 33 and 34 of the carriages 31 and 32 of the mould 27 are engaged and an additional electrode 22 is arranged intermediate of the extreme electrode holders 8 and 9.
  • three pairs of electrodes are melted in the common mould 27. Due to liberation of heat in the slag bath 29, the consumable electrodes 22-24 melt off forming a metal bath 28 under which an ingot 1 crystallizes. With the above method, a large-size metal ingot can be built-up.
  • a similar large-size ingot 1 can be melted by using one pair of consumable electrodes 30 (FIG. 3) having a rather large cross-section.
  • the electrodes can be attached between the two electrode holders 8 and 9 by using the total capacity of the drives 6 and 7 with the engaged half-couplings l2 and 13.
  • the electrode holders 8 and 9 are separated by the drives 18 and 19 to provide a requisite spacing therebetween.
  • a large-size ingot 1 (FIG. 4) can be also melted with one of the consumable electrodes being attached in one of the extreme electrode holders and the other one arranged between the current-carrying plates of the electrode holders. It is expedient to use this version for melting heavy ingots with a relatively small crosssection.
  • the ingots in a medium and small weight range they are melted by using the capacity of each drive (mounted on each stringer) individually. If that is the case, the half-couplings l2 and 12 (FIGS. 5 and 6) are disengaged.
  • the melting process use is made of two carriages with the base plates mounted each under the appropriate mould, with the electrodes being in that case fed into the moulds and remelted therein independently.
  • both the independent feed of the consumable electrodes and their horizontal transfer are effected in the slag bath of a single common mould supported by two carriages whose drives are engaged with their half-couplings 12 and 13 (FIG. 4) whereas the half-couplings 35 (FIG. 7) of the drives 33 and 34 of the electrode holders 8 and 9 can be disengaged in case the additional consumable electrode 2 is not used.
  • furnace is characterized by high versatility and offers a great number of technological combinations in carrying out the electroslag remelting of metals and alloys. Moreover, it affords the possiblity of melting ingots both in heavy and medium and small weight ranges.
  • a furnace for the electroslag melting of metal ingots comprising: at least a pair of stringers; a carriage mounted for vertical transfer on each of said stringers; electrode holders disposed on each of said carriages; current-carrying plates fastened to the sides of said electrode holders facing each other, said currentcarrying plates forming a seat for holding in place at least one additional consumable electrode; drive means for transferring said carriages along said stringers said drive means being aligned axially with the free ends of their shafts facing each other; and half-couplings mounted on each of said drive shafts so as to allow interaction therebetween.
  • each of said carriages includes horizontal slideways in which said electrode holders are installed and wherein additional drive means for transferring said electrode holders in said slide ways are provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)
US00409447A 1973-04-28 1973-10-25 Furnace for electroslag melting of metal ingots Expired - Lifetime US3839591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU731904603A SU426525A1 (ru) 1973-04-28 1973-04-28 Печь дл электрошлакового переплава

Publications (1)

Publication Number Publication Date
US3839591A true US3839591A (en) 1974-10-01

Family

ID=20548640

Family Applications (1)

Application Number Title Priority Date Filing Date
US00409447A Expired - Lifetime US3839591A (en) 1973-04-28 1973-10-25 Furnace for electroslag melting of metal ingots

Country Status (10)

Country Link
US (1) US3839591A (enrdf_load_stackoverflow)
AT (1) AT333451B (enrdf_load_stackoverflow)
BE (1) BE814240A (enrdf_load_stackoverflow)
CA (1) CA1018224A (enrdf_load_stackoverflow)
ES (1) ES420383A1 (enrdf_load_stackoverflow)
FR (1) FR2227341B1 (enrdf_load_stackoverflow)
GB (1) GB1416108A (enrdf_load_stackoverflow)
IT (1) IT997420B (enrdf_load_stackoverflow)
SE (1) SE395717B (enrdf_load_stackoverflow)
SU (1) SU426525A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027092A (en) * 1976-02-17 1977-05-31 Boris Izrailevich Medovar Electrode holder of a multielectrode furnace

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU719137A1 (ru) * 1978-02-06 1981-02-23 Производственное Объединение "Жданов-Тяжмаш" Инвентарна головка
DE2930355C2 (de) * 1979-07-26 1984-11-22 Special'noe proektno-konstruktorskoe i technologičeskoe bjuro elektrotermičeskogo oborudovanija proizvodstvennogo obiedinenija "Sibelektroterm", Novosibirsk Elektrodenhalter für Elektoschlacke-Umschmelzanlagen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614285A (en) * 1969-05-27 1971-10-19 Boehler & Co Ag Geb Installation for producing large blocks of metals through electroslag remelting
US3660584A (en) * 1969-06-17 1972-05-02 Boehler & Co Ag Geb Holding means for electrodes, molds, base plates and the like in an electroslag remelting installation
US3781935A (en) * 1970-12-20 1974-01-01 B Medovar Method of operation of a convertible esr furnace installation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614285A (en) * 1969-05-27 1971-10-19 Boehler & Co Ag Geb Installation for producing large blocks of metals through electroslag remelting
US3660584A (en) * 1969-06-17 1972-05-02 Boehler & Co Ag Geb Holding means for electrodes, molds, base plates and the like in an electroslag remelting installation
US3781935A (en) * 1970-12-20 1974-01-01 B Medovar Method of operation of a convertible esr furnace installation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027092A (en) * 1976-02-17 1977-05-31 Boris Izrailevich Medovar Electrode holder of a multielectrode furnace

Also Published As

Publication number Publication date
ATA866873A (de) 1976-03-15
ES420383A1 (es) 1976-04-16
SE395717B (sv) 1977-08-22
IT997420B (it) 1975-12-30
AT333451B (de) 1976-11-25
BE814240A (fr) 1974-10-28
CA1018224A (en) 1977-09-27
FR2227341B1 (enrdf_load_stackoverflow) 1976-06-25
DE2357095B2 (de) 1977-05-12
DE2357095A1 (de) 1974-11-14
GB1416108A (en) 1975-12-03
SU426525A1 (ru) 1977-10-25
FR2227341A1 (enrdf_load_stackoverflow) 1974-11-22

Similar Documents

Publication Publication Date Title
US3775091A (en) Induction melting of metals in cold, self-lined crucibles
US3764297A (en) Method and apparatus for purifying metal
WO2002052051A2 (en) Methods of melting titanium and other metals and alloys by plasma arc or electron beam
US3469968A (en) Electroslag melting
US3839591A (en) Furnace for electroslag melting of metal ingots
US4207454A (en) Method for electroslag welding of metals
US4856021A (en) Electric direct-current scrap-melting furnace
US3723630A (en) Method for the plasma-ac remelting of a consumable metal bar in a controlled atmosphere
JPH05280871A (ja) 誘導溶解用水冷分割銅るつぼ
US3709283A (en) Multiple electrode electroslag casting apparatus having current equalizer
US3614285A (en) Installation for producing large blocks of metals through electroslag remelting
GB1508568A (en) Electro-slag remelting
US3713476A (en) Installation for making ingots and method therefor
US3493364A (en) Method of manufacturing alloy by using consumable electrodes
US3080499A (en) Consumable electrodes
US3807486A (en) Method of electroslag casting of ingots
US3738825A (en) System and method of electroslag remelting utilizing slab-shaped electrodes
US3849588A (en) Method of electroslag melting of metal ingots
SE430573B (sv) Anordning for tillforing av smelt stal till ett got under stelnande
US3992564A (en) Electroslag remelting plant
RU2087562C1 (ru) Способ получения крупногабаритного слитка
US3875992A (en) Electroslag remelting plant
US3483917A (en) Installation for the electroslag remelting
US3865174A (en) Method for the nonconsumable electrode melting of reactive metals
US3835227A (en) An electroslag remelting system with equalized plural electrode remelting