FI885429A - Foerfarande och anordning foer att observera exponeringsgraden hos en ljusbaoge. - Google Patents

Foerfarande och anordning foer att observera exponeringsgraden hos en ljusbaoge. Download PDF

Info

Publication number
FI885429A
FI885429A FI885429A FI885429A FI885429A FI 885429 A FI885429 A FI 885429A FI 885429 A FI885429 A FI 885429A FI 885429 A FI885429 A FI 885429A FI 885429 A FI885429 A FI 885429A
Authority
FI
Finland
Prior art keywords
arc
ljusbaoge
exponeringsgraden
observera
hos
Prior art date
Application number
FI885429A
Other languages
English (en)
Other versions
FI885429A0 (fi
Inventor
Robert Walter Montgomery
Original Assignee
British Steel Plc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10627486&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI885429(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by British Steel Plc filed Critical British Steel Plc
Publication of FI885429A0 publication Critical patent/FI885429A0/fi
Publication of FI885429A publication Critical patent/FI885429A/fi

Links

Classifications

    • 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
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Measurement Of Radiation (AREA)
  • Earth Drilling (AREA)
  • Treating Waste Gases (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Inorganic Insulating Materials (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Discharge Heating (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Polymerisation Methods In General (AREA)
FI885429A 1987-11-25 1988-11-23 Foerfarande och anordning foer att observera exponeringsgraden hos en ljusbaoge. FI885429A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878727532A GB8727532D0 (en) 1987-11-25 1987-11-25 Arc exposure monitor

Publications (2)

Publication Number Publication Date
FI885429A0 FI885429A0 (fi) 1988-11-23
FI885429A true FI885429A (fi) 1989-05-26

Family

ID=10627486

Family Applications (1)

Application Number Title Priority Date Filing Date
FI885429A FI885429A (fi) 1987-11-25 1988-11-23 Foerfarande och anordning foer att observera exponeringsgraden hos en ljusbaoge.

Country Status (8)

Country Link
US (1) US4852119A (fi)
EP (1) EP0317948B1 (fi)
AT (1) ATE92234T1 (fi)
CA (1) CA1282459C (fi)
DE (1) DE3882660T2 (fi)
ES (1) ES2042697T3 (fi)
FI (1) FI885429A (fi)
GB (2) GB8727532D0 (fi)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2648564B1 (fr) * 1989-06-15 1991-09-27 Siderurgie Fse Inst Rech Procede et dispositif pour mesurer l'instabilite d'un arc dans un four electrique de traitement de metal liquide
KR100212020B1 (ko) * 1990-10-24 1999-08-02 제임스 제이. 키넌 전기아크 및 고주파 스펙트럼 검출
US5477150A (en) * 1990-10-24 1995-12-19 Hendry Mechanical Works Electric arc and radio frequency spectrum detection
FR2670571A3 (fr) * 1990-12-13 1992-06-19 Unimetall Sa Procede et dispositif pour mesurer l'instabilite d'un arc dans un four electrique de traitement de metal liquide alimente en courant continu.
IT1295728B1 (it) * 1997-07-31 1999-05-27 Automation Spa Centro Procedimento di controllo alimentazione per forno elettrico ad arco
US6362629B1 (en) 1997-08-14 2002-03-26 Hendry Mechanical Works Electric arc monitoring systems
US6772077B1 (en) 1998-08-10 2004-08-03 Hendry Mechanical Works Electric arc monitoring systems
US6400258B1 (en) * 2000-01-19 2002-06-04 Hendry Mechanical Works Electric arc monitoring systems
US20070133651A1 (en) * 2005-12-14 2007-06-14 Gerhan Ronald E Method for controlling foaming of slag in an electric arc furnace
TW201432279A (zh) * 2013-02-05 2014-08-16 Tzu-Feng Wanglee 運用聲能特徵判斷電力設備電弧放電及機械震動、異常位移類故障的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1960936B2 (de) * 1969-12-04 1971-11-04 Leybold Heraeus Gmbh & Co Kg Verfahren und anordnung zur regelung der eintauchtiefe von abschmelzelektroden in die schlackenschicht beim elektro schlacke umschmelzen
JPS56500178A (fi) * 1979-01-31 1981-02-19
CA1154813A (fr) * 1981-05-19 1983-10-04 Michel Drouet Mesure et controle acoustique de la longueur d'un arc electrique
AT382101B (de) * 1982-11-15 1987-01-12 Inst Po Metalloznanie I Tekno Verfahren und vorrichtung zur regelung der eintauchtiefe von abschmelzelektroden in elektroschlacke-umschmelzanlagen
DE3512189C2 (de) * 1985-04-03 1996-09-05 Mannesmann Ag Verfahren und Vorrichtung zur Regelung von Lichtbogenöfen
DE3512178C2 (de) * 1985-04-03 1996-03-14 Mannesmann Ag Verfahren zur Elektrodenregelung in einem Ofen mit frei brennendem Lichtbogen
DE3616344A1 (de) * 1986-05-15 1987-11-19 Thyssen Stahl Ag Verfahren zur ermittlung des schmelzzustandes des einsatzes in einem drehstromgespeisten lichtbogenofen

Also Published As

Publication number Publication date
GB8827387D0 (en) 1988-12-29
EP0317948A3 (en) 1991-05-15
EP0317948A2 (en) 1989-05-31
US4852119A (en) 1989-07-25
ES2042697T3 (es) 1993-12-16
DE3882660D1 (de) 1993-09-02
CA1282459C (en) 1991-04-02
EP0317948B1 (en) 1993-07-28
GB8727532D0 (en) 1987-12-31
FI885429A0 (fi) 1988-11-23
DE3882660T2 (de) 1993-12-16
ATE92234T1 (de) 1993-08-15
GB2212999A (en) 1989-08-02
GB2212999B (en) 1991-06-26

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Legal Events

Date Code Title Description
FD Application lapsed
MM Patent lapsed

Owner name: BRITISH STEEL LIMITED