GB1417676A - Method of monitoring effervescence of a steel - Google Patents

Method of monitoring effervescence of a steel

Info

Publication number
GB1417676A
GB1417676A GB1861174A GB1861174A GB1417676A GB 1417676 A GB1417676 A GB 1417676A GB 1861174 A GB1861174 A GB 1861174A GB 1861174 A GB1861174 A GB 1861174A GB 1417676 A GB1417676 A GB 1417676A
Authority
GB
United Kingdom
Prior art keywords
ingot
khz
behaviour
effervescence
ingots
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
GB1861174A
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 GB1417676A publication Critical patent/GB1417676A/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
    • G01N29/04—Analysing solids
    • G01N29/11—Analysing solids by measuring attenuation of acoustic waves
    • 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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices
    • 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

Abstract

1417676 Casting processes CENTRE DE BECHERCHES METALLUBGIQUES-CENTRUM VOOR RESEARCH IN DE METALLURGIE 29 April 1974 [27 April 1973] 18611/74 Heading B3F [Also in Divisions H4 C7] Molten steel being poured into an ingot mould and its subsequent effervescence (rimming) is monitored by detecting the sound emitted by the steel during these processes, by a microphone, and filtering the signal to select certain frequencies thereof, which are recorded and used to provide information as to whether the addition of oxidizing or deoxidizing agents to the ingot is necessary to result in a solidified ingot having the desired metallurgical properties. The characteristics of the recorded acoustic energy are determined by comparison with results obtained from a statistic study based on a large number of ingots. In the embodiment described, graphs (not shown) are given for measurements of selectively frequent filtered components, which results may be processed to exclude external factors influencing the measurement, curves 1 and 2 in Figs. 1 and 2, showing the evolution of noise emitted by two ingots. The first ingot in curve 1 shows good behaviour, the second ingot, curve 2 exemplifies bad behaviour. Fig. 1 shows the 8 kHz behaviour and Fig. 2 the 18 kHz behaviour. Figs. 3 and 4 (not shown) show the evolution of effervescence noise selectively filtered at 5 kHz and 18 kHz for a 1st satisfactory ingot (Fig. 3, not shown), and a second unsatisfactory ingot (Fig. 4, not shown).
GB1861174A 1973-04-27 1974-04-29 Method of monitoring effervescence of a steel Expired GB1417676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE6044133A BE798896A (en) 1973-04-27 1973-04-27 METHOD FOR MEASURING THE EFFERVESCENCE OF A STEEL

Publications (1)

Publication Number Publication Date
GB1417676A true GB1417676A (en) 1975-12-17

Family

ID=3874443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1861174A Expired GB1417676A (en) 1973-04-27 1974-04-29 Method of monitoring effervescence of a steel

Country Status (6)

Country Link
US (1) US3875989A (en)
BE (1) BE798896A (en)
DE (1) DE2420010A1 (en)
FR (1) FR2227529B3 (en)
GB (1) GB1417676A (en)
LU (1) LU69947A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150692A (en) * 1983-11-30 1985-07-03 Squibb & Sons Inc Apparatus and method for coating tablets
GB2156520A (en) * 1984-03-27 1985-10-09 Trade & Industry Secretary Of Monitoring of process steps
GB2171198A (en) * 1985-02-14 1986-08-20 Vasipari Kutato Fejleszto Monitoring a heterogeneous transformation process
GB2211938A (en) * 1987-11-05 1989-07-12 Atomic Energy Authority Uk Acoustic monitoring of plant operation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544499B1 (en) * 1983-04-12 1986-02-07 Seram APPARATUS FOR MEASURING THE VARIATION OF THE ULTRASONIC TRANSMISSION AT AN INTERFACE
US6539805B2 (en) 1994-07-19 2003-04-01 Vesuvius Crucible Company Liquid metal flow condition detection
US5633462A (en) * 1994-07-19 1997-05-27 Apa Systems Method and apparatus for detecting the condition of the flow of liquid metal in and from a teeming vessel
CN113310326A (en) * 2021-03-06 2021-08-27 山东华特磁电科技股份有限公司 Variable power electromagnetic stirring system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127642A (en) * 1960-03-24 1964-04-07 Centre Nat Rech Metall Process and apparatus for the casting of steel
NL278244A (en) * 1961-05-09

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150692A (en) * 1983-11-30 1985-07-03 Squibb & Sons Inc Apparatus and method for coating tablets
GB2156520A (en) * 1984-03-27 1985-10-09 Trade & Industry Secretary Of Monitoring of process steps
GB2171198A (en) * 1985-02-14 1986-08-20 Vasipari Kutato Fejleszto Monitoring a heterogeneous transformation process
GB2211938A (en) * 1987-11-05 1989-07-12 Atomic Energy Authority Uk Acoustic monitoring of plant operation

Also Published As

Publication number Publication date
DE2420010A1 (en) 1974-11-21
US3875989A (en) 1975-04-08
FR2227529A1 (en) 1974-11-22
FR2227529B3 (en) 1977-03-04
LU69947A1 (en) 1974-08-06
BE798896A (en) 1973-10-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee