JPS5719137A - Detecting method of molten steel level in mold - Google Patents

Detecting method of molten steel level in mold

Info

Publication number
JPS5719137A
JPS5719137A JP9427080A JP9427080A JPS5719137A JP S5719137 A JPS5719137 A JP S5719137A JP 9427080 A JP9427080 A JP 9427080A JP 9427080 A JP9427080 A JP 9427080A JP S5719137 A JPS5719137 A JP S5719137A
Authority
JP
Japan
Prior art keywords
electrode
resistance
molten steel
mold
constant
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.)
Pending
Application number
JP9427080A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Kamikawa
Kazuyoshi Toshiume
Yoshitaka Nimura
Hideki Yokoyama
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP9427080A priority Critical patent/JPS5719137A/en
Priority to US06/280,494 priority patent/US4470446A/en
Priority to AU72660/81A priority patent/AU528599B2/en
Priority to FR8113457A priority patent/FR2486651A1/en
Priority to CA000381447A priority patent/CA1197591A/en
Priority to GB8121200A priority patent/GB2082777B/en
Publication of JPS5719137A publication Critical patent/JPS5719137A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
    • G01F23/242—Mounting arrangements for electrodes

Abstract

PURPOSE:To detect the level of molten steel securely by making the electrical resistance of an electrode constant within a specific range. CONSTITUTION:Electrode 5 is inserted from upper part of a mold into flux 4. The lower end of the electrode 5 is held in slag 3 while the electrode 5 is suspended so that it is freely moved horizontally through an elevator 6. A constant current is supplied from a constant current generator 9 through the electrode 5, and the resistance between the electrode 5 and the molten steel 2 is sampled with a resistance measuring instrument 10. The output of said resistance measuring instrument 10 is compared with a constant resistance of the 5-50OMEGA range previously set by a resistance setter 11 by means of a differential amplifier 12. The difference value is converted into the control output for a servomotor 7 by a power amplifier 13. The obtained output is employed to control the driving of the servomotor 7 to move the elevator 6 horizontally.
JP9427080A 1980-07-09 1980-07-09 Detecting method of molten steel level in mold Pending JPS5719137A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP9427080A JPS5719137A (en) 1980-07-09 1980-07-09 Detecting method of molten steel level in mold
US06/280,494 US4470446A (en) 1980-07-09 1981-07-06 Method and apparatus for detecting molten metal surface level in a mold
AU72660/81A AU528599B2 (en) 1980-07-09 1981-07-08 Level of molten metal
FR8113457A FR2486651A1 (en) 1980-07-09 1981-07-08 METHOD AND APPARATUS FOR DETECTING THE SURFACE LEVEL OF MOLTEN METAL IN A MOLD
CA000381447A CA1197591A (en) 1980-07-09 1981-07-09 Method and apparatus for detecting molten metal surface level in a mold
GB8121200A GB2082777B (en) 1980-07-09 1981-07-09 Detecting a molten metal surface level in a casting mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9427080A JPS5719137A (en) 1980-07-09 1980-07-09 Detecting method of molten steel level in mold

Publications (1)

Publication Number Publication Date
JPS5719137A true JPS5719137A (en) 1982-02-01

Family

ID=14105575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9427080A Pending JPS5719137A (en) 1980-07-09 1980-07-09 Detecting method of molten steel level in mold

Country Status (1)

Country Link
JP (1) JPS5719137A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510233U (en) * 1991-07-23 1993-02-09 共同印刷株式会社 Packaging box with handle
JP2007000882A (en) * 2005-06-22 2007-01-11 Hitachi Metals Ltd Method and apparatus for controlling molten metal surface in continuous casting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510233U (en) * 1991-07-23 1993-02-09 共同印刷株式会社 Packaging box with handle
JP2007000882A (en) * 2005-06-22 2007-01-11 Hitachi Metals Ltd Method and apparatus for controlling molten metal surface in continuous casting

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