GB868938A - Improvements in or relating to the manufacture of steel - Google Patents

Improvements in or relating to the manufacture of steel

Info

Publication number
GB868938A
GB868938A GB28088/57A GB2808857A GB868938A GB 868938 A GB868938 A GB 868938A GB 28088/57 A GB28088/57 A GB 28088/57A GB 2808857 A GB2808857 A GB 2808857A GB 868938 A GB868938 A GB 868938A
Authority
GB
United Kingdom
Prior art keywords
steel
slag
deoxidants
produced
casting
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
GB28088/57A
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.)
BOCHUMER VER fur GUSZSTAHLFAB
Original Assignee
BOCHUMER VER fur GUSZSTAHLFAB
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 BOCHUMER VER fur GUSZSTAHLFAB filed Critical BOCHUMER VER fur GUSZSTAHLFAB
Publication of GB868938A publication Critical patent/GB868938A/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
    • C21C5/52—Manufacture of steel in electric furnaces
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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

Steel is produced by the following steps: (a) Melting in a basic electric furnace; (b) Adjusting the manganese content thereof so as not exceed 0.25% at the end of the oxidation period; (c) Treating the steel with a final reducing slag containing a maximum of 10% silica; (d) casting the steel thus produced in a vacuum ensuring that the addition of deoxidants does not raise the manganese content above 0.25% and the silicon content to above 0.1%. In an example the steel was melted under one slag, oxidized by a second slag rich in iron oxide, a third slag being formed and oxidation continued by blowing with an oxygen lance into the bath. A reducing slag containing coal dust and calcium silicon was used for stage (c). During vacuum casting, deoxidants such as magnesium, aluminium, cerium, titanium, or alloys thereof may be added. Specification 796,369 is referred to.
GB28088/57A 1956-09-28 1957-09-05 Improvements in or relating to the manufacture of steel Expired GB868938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE868938X 1956-09-28

Publications (1)

Publication Number Publication Date
GB868938A true GB868938A (en) 1961-05-25

Family

ID=6802694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28088/57A Expired GB868938A (en) 1956-09-28 1957-09-05 Improvements in or relating to the manufacture of steel

Country Status (1)

Country Link
GB (1) GB868938A (en)

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