GB1417676A - Method of monitoring effervescence of a steel - Google Patents
Method of monitoring effervescence of a steelInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Manufacturing & Machinery (AREA)
- Acoustics & Sound (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Continuous Casting (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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).
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)
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)
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)
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 |
-
1973
- 1973-04-27 BE BE6044133A patent/BE798896A/en unknown
-
1974
- 1974-04-24 FR FR7414925A patent/FR2227529B3/fr not_active Expired
- 1974-04-25 DE DE2420010A patent/DE2420010A1/en active Pending
- 1974-04-26 US US464979A patent/US3875989A/en not_active Expired - Lifetime
- 1974-04-26 LU LU69947A patent/LU69947A1/xx unknown
- 1974-04-29 GB GB1861174A patent/GB1417676A/en not_active Expired
Cited By (4)
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 |
---|---|
LU69947A1 (en) | 1974-08-06 |
FR2227529B3 (en) | 1977-03-04 |
FR2227529A1 (en) | 1974-11-22 |
DE2420010A1 (en) | 1974-11-21 |
BE798896A (en) | 1973-10-29 |
US3875989A (en) | 1975-04-08 |
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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 |