RU94029201A - Method for fusing metal in arc furnace - Google Patents

Method for fusing metal in arc furnace

Info

Publication number
RU94029201A
RU94029201A RU94029201/07A RU94029201A RU94029201A RU 94029201 A RU94029201 A RU 94029201A RU 94029201/07 A RU94029201/07 A RU 94029201/07A RU 94029201 A RU94029201 A RU 94029201A RU 94029201 A RU94029201 A RU 94029201A
Authority
RU
Russia
Prior art keywords
arc
electrodes
anode
current
mix
Prior art date
Application number
RU94029201/07A
Other languages
Russian (ru)
Inventor
А.Я. Андрианова
А.Г. Матисон
В.М. Никитин
В.М. Эдемский
Original Assignee
В.М. Эдемский
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 В.М. Эдемский filed Critical В.М. Эдемский
Priority to RU94029201/07A priority Critical patent/RU94029201A/en
Publication of RU94029201A publication Critical patent/RU94029201A/en

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Landscapes

  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)

Abstract

FIELD: electric engineering. SUBSTANCE: method involves use of rectangular currents with both constant and varying sign in different periods of fusion. Any electrode of arc furnace may be used as arc-less anode (by contacting mix), other electrodes carry arc in this case. Function of arc-less anode is distributed between electrodes during process. Arc is supplied by rectangular current of low frequency . This results in increased power that introduced into arc because voltage of arc is also rectangular and inductive losses in current supply are decreased . Alternating operations of electrodes as connector of mix to anode of power supply provide fusion of mix by direct current in standard furnace without install of expensive and complex hearth electrodes. Reverse polarity operations are provided (metal-cathode or electrode-anode). Proposed method has greatest efficiency for upgrade of arc furnaces of low and middle power. EFFECT: increased functional capabilities.

Claims (1)

Предложен способ плавления металла в дуговой печи, содержащей два или более электродов, заключающийся в использовании как знакопостоянного, так и переменного тока прямоугольной формы в различные периоды плавки. При этом любой из электродов дуговой печи в твердый период плавки может быть использован в качестве "бездугового" анода, для чего он приводится в соприкосновение с шихтой, а другие электроды являются в таком случае "дугонесущими" (прямая полярность). Электроды в ходе процесса по очереди выполняют функции "бездугового" анода, что обеспечивает равномерный износ футеровки и быстрое расплавление шихты. Питание дуги переменным током прямоугольной формы пониженной частоты обеспечивает повышение вводимой в дугу мощности, так как напряжение дуги имеет прямоугольную форму, а индуктивные потери в токоподводящей цепи снижаются. Благодаря попеременному использованию каждого из электродов в качестве соединителя шихты с анодом источника обеспечивается возможность плавления шихты на постоянном токе в обычной печи без установки дорогих и сложных в эксплуатации подовых электродов. Возможна работа на обратной полярности (металл - катод, электрод - анод). Наиболее эффективно предлагаемый способ может использоваться при модернизации литейных дуговых печей малой и средней емкости.A method of melting metal in an arc furnace containing two or more electrodes is proposed, which consists in using both alternating current and alternating current of a rectangular shape in different periods of melting. In this case, any of the electrodes of the arc furnace during the solid melting period can be used as an "arcless" anode, for which it is brought into contact with the charge, and the other electrodes are in this case "arc-bearing" (direct polarity). The electrodes during the process in turn perform the functions of an "arcless" anode, which ensures uniform wear of the lining and rapid melting of the charge. The arc power supply with an ac current of a rectangular shape of reduced frequency provides an increase in the power input into the arc, since the arc voltage has a rectangular shape, and the inductive losses in the current supply circuit are reduced. Due to the alternate use of each of the electrodes as a batch connector with the source anode, it is possible to melt the batch at a constant current in a conventional furnace without installing expensive and complicated hearth electrodes. It is possible to work on reverse polarity (metal - cathode, electrode - anode). The most effectively proposed method can be used for the modernization of foundry arc furnaces of small and medium capacity.
RU94029201/07A 1994-08-04 1994-08-04 Method for fusing metal in arc furnace RU94029201A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94029201/07A RU94029201A (en) 1994-08-04 1994-08-04 Method for fusing metal in arc furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94029201/07A RU94029201A (en) 1994-08-04 1994-08-04 Method for fusing metal in arc furnace

Publications (1)

Publication Number Publication Date
RU94029201A true RU94029201A (en) 1996-06-10

Family

ID=48448636

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94029201/07A RU94029201A (en) 1994-08-04 1994-08-04 Method for fusing metal in arc furnace

Country Status (1)

Country Link
RU (1) RU94029201A (en)

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