GB1167391A - Method and Apparatus for the Continuous Oxygen Content Monitoring of Molten Steel During Vacuum Deoxidation - Google Patents

Method and Apparatus for the Continuous Oxygen Content Monitoring of Molten Steel During Vacuum Deoxidation

Info

Publication number
GB1167391A
GB1167391A GB48194/66A GB4819466A GB1167391A GB 1167391 A GB1167391 A GB 1167391A GB 48194/66 A GB48194/66 A GB 48194/66A GB 4819466 A GB4819466 A GB 4819466A GB 1167391 A GB1167391 A GB 1167391A
Authority
GB
United Kingdom
Prior art keywords
molten steel
oxygen
fed
rate
analogue
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
GB48194/66A
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.)
A V R R
Lectromelt Corp
Original Assignee
A V R R
Lectromelt Corp
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 A V R R, Lectromelt Corp filed Critical A V R R
Publication of GB1167391A publication Critical patent/GB1167391A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21C7/10—Handling in a vacuum
    • 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
    • C21C5/30—Regulating or controlling the blowing

Landscapes

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

Abstract

1,167,391. Monitoring the degassing of molten steel. LECTROMELT CORP. 27 Oct., 1966 [18 Nov., 1965], No. 48194/65. Heading B1X. The rate of oxygen removal from vacuum degassing apparatus for treating molten steel, comprising a vacuum chamber connected to evacuating means, is determined by combining measurements of the proportion of at least one of the oxygen-containing gases in the discharge gases from the chamber, of the amount of molten metal treated therein, and of the rate of gas removal therefrom. As shown, molten steel 12 is drawn from a ladle 11 into a vacuum vessel 10 by the action of a steam ejector pumping system 25; the weight of the metal treated is determined by a strain gauge 66 attached to the ram 19 supporting the vessel 10, or by a measuring device 65 below the ladle 11, and this information is fed to a recorder 68 and to an analogue computer 30. The rate of gas removal is measured by determining the suction pressure of the pumping system 25 and converting it by means of an analogue function generator 70 into an electrical signal which is also fed to the analogue computer 30. A portion of the discharge gases is withdrawn through filters 44 and 51 and analysed for percentages of H 2 , CO, and CO 2 by a gas analyser 38, e.g. by a thermal conductivity cell for the H 2 and by infra-red cells for the CO and CO 2 . These percentages are recorded by recorders 58, 60, and that of the CO is transmitted also to the analogue computer 30. The original amount of oxygen present in the grade of steel being treated is determined empirically, and this information is also fed into the computer 30, enabling it to determine the amount of combined and free oxygen remaining in the melt.
GB48194/66A 1965-11-18 1966-10-27 Method and Apparatus for the Continuous Oxygen Content Monitoring of Molten Steel During Vacuum Deoxidation Expired GB1167391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50844065A 1965-11-18 1965-11-18

Publications (1)

Publication Number Publication Date
GB1167391A true GB1167391A (en) 1969-10-15

Family

ID=24022759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48194/66A Expired GB1167391A (en) 1965-11-18 1966-10-27 Method and Apparatus for the Continuous Oxygen Content Monitoring of Molten Steel During Vacuum Deoxidation

Country Status (5)

Country Link
BE (1) BE689825A (en)
DE (1) DE1598822A1 (en)
FR (1) FR1498869A (en)
GB (1) GB1167391A (en)
NL (1) NL6615870A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6173817A (en) * 1984-09-18 1986-04-16 Sumitomo Electric Ind Ltd Method and apparatus for control refining molten steel

Also Published As

Publication number Publication date
NL6615870A (en) 1967-05-19
BE689825A (en) 1967-05-02
DE1598822A1 (en) 1970-08-13
FR1498869A (en) 1967-10-20

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees