GB1263468A - Improvements relating to control arrangements for electro-slag refining apparatus - Google Patents

Improvements relating to control arrangements for electro-slag refining apparatus

Info

Publication number
GB1263468A
GB1263468A GB2095/69A GB209569A GB1263468A GB 1263468 A GB1263468 A GB 1263468A GB 2095/69 A GB2095/69 A GB 2095/69A GB 209569 A GB209569 A GB 209569A GB 1263468 A GB1263468 A GB 1263468A
Authority
GB
United Kingdom
Prior art keywords
ingot
growth
electrode
impedance
measured
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
Application number
GB2095/69A
Inventor
Alec George Allen
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to DE19691924364 priority Critical patent/DE1924364A1/en
Priority to SE06889/69A priority patent/SE365820B/xx
Priority to FR6915744A priority patent/FR2008517A1/en
Publication of GB1263468A publication Critical patent/GB1263468A/en
Expired legal-status Critical Current

Links

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
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
    • H05B7/148—Automatic control of power
    • H05B7/152—Automatic control of power by electromechanical means for positioning of electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (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)

Abstract

1,263,468. Zone melting. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 12 May, 1969 [14 May, 1968; 17 Sept., 1968; 14 Jan., 1969], Nos. 22855/68, 44149/68 and 2095/69. Heading B1S. [Also in Division G3] A control arrangement for electro-slag refining apparatus comprises means for varying the voltage applied between the electrode 3 and the ingot 5 being formed, in response to the difference between the actual growth of the ingot and the growth which will give a shallow dish shaped pool of molten metal at the top of the ingot. In addition, the speed of an electric motor 9 which lowers the electrode into the slag pool 7 may be controlled by unspecified means 25 so as to keep the impedance, and hence the length of the gap constant. The impedance is determined at 23 from a measurement at 19 of the voltage between the electrode and ingot, and the current, measured at 21. The growth of the ingot may be measured by load cells, or the height of the growing ingot may be detected by devices 43 comprising thermocouples, capacitive or inductive sensing devices, X-ray apparatus, devices sensitive to radio active material in the ingot, or devices using sonic or ultra-sonic oscillations, but as shown the growth of the ingot is deduced from the loss in weight of the electrode 3, measured by load cells 27 whose output is compared with a reference at 31 to control the applied voltage at 17. In Fig. 2 (not shown) the electrode is lowered at a constant speed, which corresponds to the desired rate of growth, and the impedance of the gap, measured as in Fig. 1, is a measure of the difference between the desired growth and the actual growth and so this measurement is used to control the applied voltage. In Fig. 3 (not shown) the lowering of the electrode is controlled by the impedance measurement as in Fig. 1, but the growth is determined by measuring the rate of feed of the electrode, comparison of this with a reference being used to control the applied voltage. The comparison may be made electrically or by a differential gear having input shafts rotating at the actual and desired feed rates respectively. It is mentioned that, alternatively, the ingot could be moved towards the electrode, and the growth rate may be varied automatically or manually, particularly at the beginning and end of operations.
GB2095/69A 1968-05-14 1968-05-14 Improvements relating to control arrangements for electro-slag refining apparatus Expired GB1263468A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19691924364 DE1924364A1 (en) 1968-05-14 1969-05-13 Control device for a device for the electrorefining of metals
SE06889/69A SE365820B (en) 1968-05-14 1969-05-14
FR6915744A FR2008517A1 (en) 1968-05-14 1969-05-14 Control of electrode movement in electroslag - refining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2285568 1968-05-14

Publications (1)

Publication Number Publication Date
GB1263468A true GB1263468A (en) 1972-02-09

Family

ID=10186129

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2095/69A Expired GB1263468A (en) 1968-05-14 1968-05-14 Improvements relating to control arrangements for electro-slag refining apparatus

Country Status (2)

Country Link
US (1) US3622678A (en)
GB (1) GB1263468A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042689A1 (en) * 1980-06-20 1981-12-30 Consarc Corporation Method and apparatus for controlling electrode drive speed in a consumable electrode furnace
RU2468102C2 (en) * 2010-07-29 2012-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Омский государственный технический университет" System for control of electric holder with electrode of electroslag melting setting, welding and overlaying
RU2630401C1 (en) * 2016-12-12 2017-09-07 Евгений Александрович Изжеуров Device for manufacturing porous material

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2103216C3 (en) * 1971-01-25 1978-03-16 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method for determining the immersion depth of electrodes in a reduction furnace
JPS5118882B1 (en) * 1971-02-02 1976-06-14
US3944714A (en) * 1973-04-23 1976-03-16 Jury Pavlovich Shtanko Electroslag remelting plant
US3890457A (en) * 1974-02-21 1975-06-17 Pavel Ioelievich Fain Device for program controlling metal remelting processes
US3872231A (en) * 1974-05-23 1975-03-18 Toroid Corp System for determining electrode length
DE2426356B2 (en) * 1974-05-31 1976-09-02 Aeg-Elotherm Gmbh, 5630 Remscheid EQUIPMENT ON ELECTRIC INDUCTION FURNACE FOR DETERMINING THE FILLING LEVEL OF THE LIQUID MELT
SU520785A1 (en) * 1974-11-28 1977-10-25 Ордена Ленина И Ордена Трудового Красного Знамени Институт Электросварки Им. Е.О.Патона Electroslag remelting furnace
US4002816A (en) * 1975-08-04 1977-01-11 Anatoly Dmitrievich Zhupakhin Device for measuring mass of consumable electrodes being remelted in electric furnaces
US4091229A (en) * 1977-03-01 1978-05-23 Wooding Corporation Slag and alloy feeding based on electrode weight
DE3528867A1 (en) * 1985-08-12 1987-02-19 Leybold Heraeus Gmbh & Co Kg DEVICE FOR COMPENSATING THE INFLUENCE OF THE WEIGHT OF A POWER SUPPLY PIPE ON A WEIGHT MEASURING DEVICE
DE3919920A1 (en) * 1989-06-19 1991-01-03 Leybold Ag DEVICE FOR MEASURING THE TEMPERATURE OF A METAL OR METAL ALLOY MELT
SE505282C2 (en) * 1995-04-18 1997-07-28 Aga Ab Method and apparatus for determining the height position of a vertically movable electrode in an arc furnace
DE102012209733A1 (en) 2012-06-11 2013-12-12 Sgl Carbon Se Method and device for determining the consumption of electrode material during operation of an electric furnace
RU2645164C2 (en) * 2015-03-10 2018-02-16 Игорь Михайлович Бершицкий Esr installation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518580A (en) * 1948-03-24 1950-08-15 Lev A Trofimov Arc furnace control
US2890368A (en) * 1957-10-24 1959-06-09 Mallory Sharon Metals Corp Controlled consumable electrode arc melting furnace construction and operation
US3272905A (en) * 1963-06-24 1966-09-13 Consarc Corp Continuous weighing of a consumable electrode
US3431344A (en) * 1965-11-15 1969-03-04 Westinghouse Electric Corp Control system providing supply circuit impedance balance control for electric arc furnaces

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042689A1 (en) * 1980-06-20 1981-12-30 Consarc Corporation Method and apparatus for controlling electrode drive speed in a consumable electrode furnace
RU2468102C2 (en) * 2010-07-29 2012-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Омский государственный технический университет" System for control of electric holder with electrode of electroslag melting setting, welding and overlaying
RU2630401C1 (en) * 2016-12-12 2017-09-07 Евгений Александрович Изжеуров Device for manufacturing porous material

Also Published As

Publication number Publication date
US3622678A (en) 1971-11-23

Similar Documents

Publication Publication Date Title
GB1263468A (en) Improvements relating to control arrangements for electro-slag refining apparatus
US4186792A (en) Apparatus for monitoring and controlling the level of the molten metal in the mold of a continuous casting machine
EP0042689B2 (en) Method and apparatus for controlling electrode drive speed in a consumable electrode furnace
DE3065319D1 (en) Arrangement for regulating the electrodes of an arc furnace
GB949539A (en) Improvements in or relating to a method and a device for continuous casting
FR2393281A1 (en) DEVICE FOR ELECTROMAGNETIC MEASUREMENT OF THE LEVEL OR DISTANCE OF AN ELECTRICALLY CONDUCTING LIQUID MATERIAL
US4000361A (en) Electroslag remelting furnace with relative displacement of a mould and an ingot being cast
GB1375798A (en)
GB1523318A (en) Controlling the depth of immersion of the electrode in an electro-slag remelting furnace
GB1430883A (en) Non-crucible zone melting of crystalline semiconductor rods
ES8503262A1 (en) Method of regulating a molten metal bath level.
ES322549A1 (en) Measuring method and apparatus
US3136876A (en) Indicator and control system
EP1185726A1 (en) Melt depth control for semiconductor materials grown from a melt
US3700412A (en) Crystal pulling apparatus having means for maintaining liquid solid crystal interface at a constant temperature
US3259467A (en) Apparatus for pulling rod-shaped crystals of semiconductor material from a melt in acrucible
FR2008517A1 (en) Control of electrode movement in electroslag - refining
GB998881A (en) Improvements in and relating to electrically heated furnaces
US4418741A (en) Method of controlling relative movement between an ingot and a mold
US4312656A (en) Glass ribbon width control method in float process
GB1284068A (en) Improvements in or relating to the drawing of crystalline bodies
US4091229A (en) Slag and alloy feeding based on electrode weight
US2977797A (en) Device for measuring the glass level in glass melting ovens
JPH0331674B2 (en)
GB976386A (en) Improvements in and relating to means for producing conveyor control signals