GB952929A - Improvements in the production of effervescing steel - Google Patents

Improvements in the production of effervescing steel

Info

Publication number
GB952929A
GB952929A GB16908/61A GB1690861A GB952929A GB 952929 A GB952929 A GB 952929A GB 16908/61 A GB16908/61 A GB 16908/61A GB 1690861 A GB1690861 A GB 1690861A GB 952929 A GB952929 A GB 952929A
Authority
GB
United Kingdom
Prior art keywords
oxygen
steel
pict
ladle
mould
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
GB16908/61A
Inventor
Harold Arthur Longden
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.)
United Steel Companies Ltd
Original Assignee
United Steel Companies 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
Priority to NL278244D priority Critical patent/NL278244A/xx
Application filed by United Steel Companies Ltd filed Critical United Steel Companies Ltd
Priority to GB16908/61A priority patent/GB952929A/en
Priority to DEC26888A priority patent/DE1213875B/en
Priority to US193243A priority patent/US3189956A/en
Priority to LU41681D priority patent/LU41681A1/xx
Publication of GB952929A publication Critical patent/GB952929A/en
Expired 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • 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
    • C21C3/00—Manufacture of wrought-iron or wrought-steel
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)

Abstract

In a continuous casting process rimming steel is over-deoxidized prior to pouring so that the product of the carbon and oxygen contents is brought to less than the optimum value which has been predetermined for the particular conditions of operation, to yield suitable subcutaneous blow-holes and the steel is then re-oxidized to the optimum value. Deoxidation may be achieved with aluminium, or preferably with silicon, as in the form of ferrosilicon, and re-oxidation by the addition of iron oxide, e.g. as a powder in a stream of carrier gas or by surface blowing the metal with jets of oxidizing gas either as it enters the mould or preferably as it leaves the ladle. As illustrated in Fig. 6, over-deoxidized metal flows from ladle 1 into launder 4 and thence to tundishes 6 and nozzles 7 leading to moulds 9. Oxygen is blown against stream 3 by means of pipes N controlled by valves 13, or may be blown against streams 5 and 8. The flow of oxygen may be additionally monitored by gamma-ray equipment 16, 17, Fig. 7, which assesses whether the blowholes in the ingot are <PICT:0952929/C3/1> <PICT:0952929/C3/2> adequately buried and operates valve 13 accordingly. According to the Provisional Specification control can also be effected by means of photo-cells which monitor the height to which molten metal is thrown above the pool in the mould.
GB16908/61A 1961-05-09 1961-05-09 Improvements in the production of effervescing steel Expired GB952929A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL278244D NL278244A (en) 1961-05-09
GB16908/61A GB952929A (en) 1961-05-09 1961-05-09 Improvements in the production of effervescing steel
DEC26888A DE1213875B (en) 1961-05-09 1962-05-03 Process for the pretreatment of unkilled or partially calmed steel intended for continuous casting
US193243A US3189956A (en) 1961-05-09 1962-05-08 Production of effervescing steel
LU41681D LU41681A1 (en) 1961-05-09 1962-05-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16908/61A GB952929A (en) 1961-05-09 1961-05-09 Improvements in the production of effervescing steel

Publications (1)

Publication Number Publication Date
GB952929A true GB952929A (en) 1964-03-18

Family

ID=10085846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16908/61A Expired GB952929A (en) 1961-05-09 1961-05-09 Improvements in the production of effervescing steel

Country Status (3)

Country Link
US (1) US3189956A (en)
GB (1) GB952929A (en)
NL (1) NL278244A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2000189A1 (en) * 1968-01-12 1969-08-29 Centre Nat Rech Metall SEMI-CALM STEEL MANUFACTURING PROCESS

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623862A (en) * 1968-06-24 1971-11-30 Int Harvester Co Use of rare earth elements for reducing nozzle deposits in the continuous casting of steel process
BE798896A (en) * 1973-04-27 1973-10-29 Centre Rech Metallurgique METHOD FOR MEASURING THE EFFERVESCENCE OF A STEEL
US4055212A (en) * 1976-10-26 1977-10-25 Essex Group, Inc. Control system and method for controlling the oxygen content in continuously cast metal
JPS57200513A (en) * 1981-06-02 1982-12-08 Metal Res Corp:Kk Preparation of iron base alloy with reduced oxygen, sulfur and nitrogen contents
US4741772A (en) * 1984-05-08 1988-05-03 China Steel Corporation Si contained ferroalloy addition as a weak pre-deoxidation process in steelmaking

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1572179A (en) * 1922-06-05 1926-02-09 Jr Thomas J Bray Steel manufacture
US2181693A (en) * 1937-09-08 1939-11-28 Bethlehem Steel Corp Steel treatment
US2236504A (en) * 1938-07-28 1941-04-01 Bethlehem Steel Corp Manufacture of steel
GB695388A (en) * 1949-11-23 1953-08-12 Wieland Werke Aktien Ges Process for the continuous casting of iron and steel
US2928150A (en) * 1957-02-26 1960-03-15 Inland Steel Co Temperature control during metal casting
US2979394A (en) * 1957-11-14 1961-04-11 Niederrheinische Hutte Ag Method for preparing high grade rimmed steel with wide ferritic peripheral zone
US3127642A (en) * 1960-03-24 1964-04-07 Centre Nat Rech Metall Process and apparatus for the casting of steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2000189A1 (en) * 1968-01-12 1969-08-29 Centre Nat Rech Metall SEMI-CALM STEEL MANUFACTURING PROCESS

Also Published As

Publication number Publication date
US3189956A (en) 1965-06-22
NL278244A (en)

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