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GB1189584A - Method and Device for Measuring the Extent of Rimming of Steel. - Google Patents

Method and Device for Measuring the Extent of Rimming of Steel.

Info

Publication number
GB1189584A
GB1189584A GB25695/68A GB2569568A GB1189584A GB 1189584 A GB1189584 A GB 1189584A GB 25695/68 A GB25695/68 A GB 25695/68A GB 2569568 A GB2569568 A GB 2569568A GB 1189584 A GB1189584 A GB 1189584A
Authority
GB
United Kingdom
Prior art keywords
rimming
ingot
steel
measuring
gases
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
GB25695/68A
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of GB1189584A publication Critical patent/GB1189584A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/223—Supports, positioning or alignment in fixed situation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2418—Probes using optoacoustic interaction with the material, e.g. laser radiation, photoacoustics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/50—Processing the detected response signal, e.g. electronic circuits specially adapted therefor using auto-correlation techniques or cross-correlation techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/202—Constituents thereof
    • G01N33/2022—Non-metallic constituents
    • G01N33/2025—Gaseous constituents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02433—Gases in liquids, e.g. bubbles, foams
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/025—Change of phase or condition
    • G01N2291/0252—Melting, molten solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/106—Number of transducers one or more transducer arrays

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

1,189,584. Monitoring the rimming of steel. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. May 29, 1968 [May 29, 1967; Nov.27, 1967], No.25695/68. Heading C7D. [Also in Division G1] Rimming of a steel ingot is monitored by measuring a rimming-related physical or chemical parameter without hindering the eflux of gases from the ingot or contact of the liquid steel with atmospheric oxygen for a plurality of heats to produce curves correlated with rimming-influencing variables and measuring the rimming-related parameter of a test ingot to produce a curve for comparison with the correlated curves. An infrared radiation detector 17, Fig. 1a receives radiation through a triangular horn 19 from a zone just above the steel surface where incandescence and luminescence occurs. The horn 19 is angularly movable about a pivot 11 and adjustable along and about a tripod stem 6, the horn aperture being varied by shutters 22, 23. The detector 17 comprises a measuring infrared cell 27, Fig.2, and an identical masked cell 25 for temperature compensation connected in a bridge circuit with a recorder 32 across the diagonal. Capacitors 35, 36 by-pass current fluctuations in the bridge. A subsidiary detector, 38 of narrow field of view is trained on the teeming jet and de-energizes relay 42 to connect the D.C. supply to the bridge when the teeming jet ceases. Other physical or chemical parameters that may be measured are, (i) the emission spectra of the evolved CO and CO 2 (ii) the pyrometric temperature of the evolved gases. (iii) the speed of sound through the gases (iv) the flux of sparks emitted by the ingot. (Measured by weighing, counting or radiation intensity) (v) the sonic or ultrasonic emission from the ingot.
GB25695/68A 1967-05-29 1968-05-29 Method and Device for Measuring the Extent of Rimming of Steel. Expired GB1189584A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU53768A LU53768A1 (en) 1967-05-29 1967-05-29
LU54962 1967-11-27

Publications (1)

Publication Number Publication Date
GB1189584A true GB1189584A (en) 1970-04-29

Family

ID=26640003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25695/68A Expired GB1189584A (en) 1967-05-29 1968-05-29 Method and Device for Measuring the Extent of Rimming of Steel.

Country Status (7)

Country Link
US (1) US3597597A (en)
BE (1) BE715033A (en)
DE (1) DE1773511A1 (en)
FR (1) FR1579628A (en)
GB (1) GB1189584A (en)
LU (2) LU53768A1 (en)
NL (1) NL6807566A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219227A (en) * 1990-08-13 1993-06-15 Barrack Technology Limited Method and apparatus for determining burned gas temperature, trapped mass and NOx emissions in an internal combustion engine
BRPI0714891B1 (en) * 2007-10-24 2018-07-24 Shenyang Taihe Metallurgy Measurement & Control Technology Co. Ltd. Method and device for measuring surface temperature of billets and continuous casting plates

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2303655A (en) * 1941-08-18 1942-12-01 Orville C Nutter Method of determining gas content of molten brasses
US2653471A (en) * 1948-06-14 1953-09-29 Socony Vacuum Oil Co Inc Thermoacoustic gas analyzer
US2582232A (en) * 1949-09-02 1952-01-15 Richard S Cesaro Temperature-sensing and/or sound velocity-measuring device
US3186232A (en) * 1962-05-28 1965-06-01 Pure Oil Co Apparatus for obtaining fluid samples from blisters
US3286098A (en) * 1963-02-28 1966-11-15 Mobil Oil Corp Methods and apparatus for determining factors related to sonic velocity in a gas
US3283562A (en) * 1963-07-16 1966-11-08 Taylor Instr Company Fluid testing by acoustic wave energy
US3432288A (en) * 1966-06-29 1969-03-11 Allegheny Ludlum Steel Process control of top-blown oxygen converter
US3442124A (en) * 1966-12-05 1969-05-06 Us Army Fluid velocimeter
US3483378A (en) * 1968-06-19 1969-12-09 United States Steel Corp Apparatus for determining the emittance of a body

Also Published As

Publication number Publication date
FR1579628A (en) 1969-08-29
LU53768A1 (en) 1969-01-27
BE715033A (en) 1968-11-12
LU54962A1 (en) 1969-07-04
US3597597A (en) 1971-08-03
DE1773511A1 (en) 1971-09-16
NL6807566A (en) 1968-12-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees