GB2021782A - Noise suppressing system for eddy-current distance measuring device for measuring the level of molten metal in a mold of continuous casting machine. - Google Patents

Noise suppressing system for eddy-current distance measuring device for measuring the level of molten metal in a mold of continuous casting machine.

Info

Publication number
GB2021782A
GB2021782A GB7917432A GB7917432A GB2021782A GB 2021782 A GB2021782 A GB 2021782A GB 7917432 A GB7917432 A GB 7917432A GB 7917432 A GB7917432 A GB 7917432A GB 2021782 A GB2021782 A GB 2021782A
Authority
GB
United Kingdom
Prior art keywords
mold
measuring device
distance measuring
eddy
molten metal
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.)
Withdrawn
Application number
GB7917432A
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan 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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Publication of GB2021782A publication Critical patent/GB2021782A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B22D11/186—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by using electric, magnetic, sonic or ultrasonic means
    • 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
    • G01F23/26—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 capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Continuous Casting (AREA)

Abstract

The level 8 of molten metal 2 in the mold 1 of a continuous casting machine is measured by an eddy- current distance measuring device 9, 10 and a noise signal caused by vibration of the liquid level due to oscillation of the mold is eliminated from the output signal of the distance measuring device 10. The system comprises noise signal separation means, such as a bandpass filter 11 having a pass frequency band corresponding to the frequency of mold oscillation and differential amplifier means 13 arranged for generating an output proportional to the difference between the noise signal selected by the separating means 11 and the output signal of the distance measuring device so as to cancel the noise signal component in the output signal. <IMAGE>
GB7917432A 1978-05-24 1979-05-18 Noise suppressing system for eddy-current distance measuring device for measuring the level of molten metal in a mold of continuous casting machine. Withdrawn GB2021782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6111578A JPS54153663A (en) 1978-05-24 1978-05-24 Method of removing nozzle for measured signal of molten material level in mold for continuous casting

Publications (1)

Publication Number Publication Date
GB2021782A true GB2021782A (en) 1979-12-05

Family

ID=13161747

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7917432A Withdrawn GB2021782A (en) 1978-05-24 1979-05-18 Noise suppressing system for eddy-current distance measuring device for measuring the level of molten metal in a mold of continuous casting machine.

Country Status (4)

Country Link
JP (1) JPS54153663A (en)
DE (1) DE2921049C3 (en)
FR (1) FR2426519A1 (en)
GB (1) GB2021782A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067668A2 (en) * 1981-06-11 1982-12-22 Nippon Steel Corporation Apparatus for measuring a metal surface position
EP0150670A2 (en) * 1983-12-20 1985-08-07 Schweizerische Aluminium Ag Method and apparatus for measuring and controlling the level of molten metal
EP1097765A1 (en) * 1999-04-28 2001-05-09 Sumitomo Metal Industries, Ltd. Molten metal surface level control in mold in continuous casting
EP1172160A1 (en) * 2000-07-11 2002-01-16 SMS Demag AG Process and installation for continuous casting, comprising a device for measuring the molten metal level in the mould, especially for liquid steel
WO2009150618A2 (en) * 2008-06-13 2009-12-17 Koninklijke Philips Electronics N.V. Capacitive proximity device and electronic device comprising the capacitive proximity device
WO2012076208A1 (en) * 2010-12-06 2012-06-14 Sms Siemag Ag Method for determining the height profile of a melt
CN102712038A (en) * 2010-01-15 2012-10-03 西门子公司 Control method for the casting level of a continuous casting mold
CN102822642A (en) * 2011-04-06 2012-12-12 株式会社尼利可 Device for measuring molten metal level

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583763A (en) * 1981-06-30 1983-01-10 Nippon Kokan Kk <Nkk> Measuring device for molten steel
JPS6366552U (en) * 1987-06-19 1988-05-02
JP2013154393A (en) * 2012-01-31 2013-08-15 Shinagawa Refractories Co Ltd Molten metal level gauge in mold for continuous casting, and molten metal level control method using the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524290A (en) * 1970-11-23 1972-06-15 Bbc Brown Boveri & Cie Circuit arrangement for suppressing interference frequencies
FR2240575A1 (en) * 1973-08-08 1975-03-07 Lassale Jean Claude Complementary electronic filter - has two outputs covering whole frequency band for acoustic reproduction
LU76147A1 (en) * 1976-11-05 1978-07-10
CH624323A5 (en) * 1977-09-19 1981-07-31 Atomenergi Ab

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067668A2 (en) * 1981-06-11 1982-12-22 Nippon Steel Corporation Apparatus for measuring a metal surface position
EP0067668A3 (en) * 1981-06-11 1984-06-20 Nippon Steel Corporation Apparatus for measuring a metal surface position
EP0150670A2 (en) * 1983-12-20 1985-08-07 Schweizerische Aluminium Ag Method and apparatus for measuring and controlling the level of molten metal
EP0150670A3 (en) * 1983-12-20 1985-08-21 Schweizerische Aluminium Ag Method and apparatus for measuring and controlling the level of molten metal
EP1097765A4 (en) * 1999-04-28 2005-02-09 Sumitomo Metal Ind Molten metal surface level control in mold in continuous casting
EP1097765A1 (en) * 1999-04-28 2001-05-09 Sumitomo Metal Industries, Ltd. Molten metal surface level control in mold in continuous casting
EP1172160A1 (en) * 2000-07-11 2002-01-16 SMS Demag AG Process and installation for continuous casting, comprising a device for measuring the molten metal level in the mould, especially for liquid steel
WO2009150618A2 (en) * 2008-06-13 2009-12-17 Koninklijke Philips Electronics N.V. Capacitive proximity device and electronic device comprising the capacitive proximity device
WO2009150618A3 (en) * 2008-06-13 2010-04-22 Koninklijke Philips Electronics N.V. Capacitive proximity device and electronic device comprising the capacitive proximity device
US8723532B2 (en) 2008-06-13 2014-05-13 Koninklijke Philips N.V. Capacitive proximity device and electronic device comprising the capacitive proximity device
CN102712038A (en) * 2010-01-15 2012-10-03 西门子公司 Control method for the casting level of a continuous casting mold
CN102712038B (en) * 2010-01-15 2014-07-30 西门子公司 Control method for the casting level of a continuous casting mold
WO2012076208A1 (en) * 2010-12-06 2012-06-14 Sms Siemag Ag Method for determining the height profile of a melt
CN102822642A (en) * 2011-04-06 2012-12-12 株式会社尼利可 Device for measuring molten metal level
CN102822642B (en) * 2011-04-06 2015-09-09 株式会社尼利可 Molten metal bath position-finding dipping spray nozzle and level of molten metal determinator

Also Published As

Publication number Publication date
FR2426519A1 (en) 1979-12-21
DE2921049A1 (en) 1979-12-06
DE2921049B2 (en) 1980-07-10
DE2921049C3 (en) 1981-03-12
JPS54153663A (en) 1979-12-04

Similar Documents

Publication Publication Date Title
GB2021782A (en) Noise suppressing system for eddy-current distance measuring device for measuring the level of molten metal in a mold of continuous casting machine.
FR2539232B1 (en) METHOD FOR DETERMINING ACCELERATION ACCORDING TO TRANSDUCER FREQUENCIES OF AN ACCELEROMETER
GB1522744A (en) Processes and systems for sensing surface deformation
SE7805401L (en) DEVICE FOR COOLING AND SEPARATION OF CASTING FROM CASTING SAND
FR2485198B1 (en) METHOD AND DEVICE FOR MEASURING THE VOLUME OF A PARTICLE
JPS5376926A (en) Molten metal level monitor controller of continuous casting machine that use eddy flow system range finder for measurement of molten metal level
ES8305494A1 (en) Improved method and apparatus for mass flow measurement.
GB2032622B (en) Speed of sound compensation for doppler flowmeter
BE837413A (en) DEVICE FOR MEASURING THE MASS OF PARTICLES OF AN AEROSOL PER UNIT OF VOLUME
GB2003610A (en) Anti-skid braking system
BE851272A (en) ELECTRO-MAGNETIC CENTRIFUGAL CONTINUOUS CASTING PROCESS OF LIQUID METALS
BE870776A (en) METHOD AND DEVICE FOR THE SEPARATION OF FINE DUST AND SALINE AEROSOLS FROM GROSS GAS FLOWS
SE8102978L (en) SET AND APPLIANCE TO COMPRESS NOISE DURING NON-BREAKING SURFACTURING TEST
BE874909A (en) PROCESS FOR PREPARING AN ELECTROMAGNETIC SILICON STEEL
JPS52150059A (en) Length measuring apparatus
JPS56144851A (en) Method and device for measuring lubricating performance between mold and ingot in continuous casting
JPS56131047A (en) Method and apparatus for measuring lubricating condition between mold and ingot in continuous casting
IL60034A (en) Sensor for measuring pressure by means of vibrating beam
ES8406751A1 (en) Device for detecting the level of a liquid metal.
JPS55101804A (en) Positioning apparatus
JPS5745403A (en) Measuring device for irregularity of track
JPS5725269A (en) Method and apparatus for measuring lubricating capacity between mold and ingot in continuous casting
JPS5744456A (en) Method and device for measuring lubricating condition between mold and ingot in continuous casting
Kim et al. Digital Signal Processing for the Optical Surfaece Roughness System
JPS568544A (en) Method and device for detection of bubble in liquid

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)