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GB1079226A - Stainless steel manufacturing process and equipment - Google Patents

Stainless steel manufacturing process and equipment

Info

Publication number
GB1079226A
GB1079226A GB9349/65A GB934965A GB1079226A GB 1079226 A GB1079226 A GB 1079226A GB 9349/65 A GB9349/65 A GB 9349/65A GB 934965 A GB934965 A GB 934965A GB 1079226 A GB1079226 A GB 1079226A
Authority
GB
United Kingdom
Prior art keywords
melt
oxygen
carbon
stainless steel
equipment
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
GB9349/65A
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.)
Crucible Steel Company of America
Original Assignee
Crucible Steel Company of America
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 Crucible Steel Company of America filed Critical Crucible Steel Company of America
Publication of GB1079226A publication Critical patent/GB1079226A/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
    • C21C5/005—Manufacture of stainless 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
    • 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
    • C21C5/32—Blowing from above
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting

Landscapes

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

Abstract

A method of making a low carbon, low silicon chromium - containing stainless steel comprises:- a) producing a steel melt containing at least the major part of the chromium content and a substantial excess over the final carbon content required. b) saturating the melt with oxygen by blowing which also removes most of the silicon in the melt, and c) subjecting the melt to sub-atmospheric pressure so that carbon and oxygen react together to give the final low carbon content. In one embodiment of the process of the present invention the melt may be vacuum treated with the injection of an oxygen containing gas (e.g. oxygen in superheated steam, argon or nitrogen) thus combining steps b and c above. After the vacuum step the melt may be alloyed with elements which are more reactive with oxygen than carbon at the temperature of the melt.
GB9349/65A 1964-03-09 1965-03-04 Stainless steel manufacturing process and equipment Expired GB1079226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US350297A US3336132A (en) 1964-03-09 1964-03-09 Stainless steel manufacturing process and equipment

Publications (1)

Publication Number Publication Date
GB1079226A true GB1079226A (en) 1967-08-16

Family

ID=23376093

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9349/65A Expired GB1079226A (en) 1964-03-09 1965-03-04 Stainless steel manufacturing process and equipment

Country Status (4)

Country Link
US (1) US3336132A (en)
DE (1) DE1458829B1 (en)
FR (1) FR1430516A (en)
GB (1) GB1079226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204595A (en) * 1987-05-12 1988-11-16 Consarc Eng Metal refining process

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839018A (en) * 1968-06-03 1974-10-01 British Iron Steel Research Production of low carbon ferroalloys
US3607247A (en) * 1968-11-12 1971-09-21 Crucible Inc Processes for the oxygen converter production of stainless steels
US3791819A (en) * 1968-11-12 1974-02-12 Jones & Laughlin Steel Corp Production of stainless steels
DE1916945C3 (en) * 1969-04-02 1980-04-17 Eisenwerk-Gesellschaft Maximilianshuette Mbh, 8458 Sulzbach-Rosenberg Use of the jacket gas process for refining pig iron to steel
US4001009A (en) * 1969-04-03 1977-01-04 Hannsgeorg Bauer Process for the manufacture of steels with a high chromium content
BE755456A (en) * 1969-08-29 1971-03-01 Allegheny Ludlum Ind Inc DECARBURATION OF MELT STEEL
BE755446A (en) * 1969-09-10 1971-02-01 Italsider Spa PROCESS AND DEVICE FOR THE TRANSFORMATION OF SCHLAMMS FROM DEPURATION PLANTS
US3841867A (en) * 1969-10-15 1974-10-15 British Steel Corp Alloying steels
DE2007373B2 (en) * 1970-02-18 1973-05-03 Eisenwerk-Gesellschaft Maximilianshütte mbH, 8458 Sulzbach-Rosenberg PROCESS AND CONVERTER FOR MANUFACTURING FERRITIC CHROME STEEL
US3723102A (en) * 1970-06-15 1973-03-27 Airco Inc High strength iron-chromium-nickel alloy
US3816100A (en) * 1970-09-29 1974-06-11 Allegheny Ludlum Ind Inc Method for producing alloy steel
FR2216362B1 (en) * 1973-02-07 1975-10-31 Creusot Loire
DE2314843C2 (en) * 1973-03-24 1975-01-30 Fried. Krupp Huettenwerke Ag, 4630 Bochum Process for the production of vacuum treated steel for forging billets
JPS5372718A (en) * 1976-12-10 1978-06-28 Showa Denko Kk Manufacture of ferrochromium
HU179333B (en) * 1978-10-04 1982-09-28 Vasipari Kutato Intezet Method and apparatus for decreasing the unclusion contents and refining the structure of steels
JPS5925007B2 (en) * 1980-03-17 1984-06-13 新日本製鐵株式会社 Method of refining hot metal and molten steel
USRE31676E (en) * 1982-09-29 1984-09-18 Thyssen Aktiengesellschaft vorm August Thyssen-Hutte AG Method and apparatus for dispensing a fluidizable solid from a pressure vessel
US4515630A (en) * 1983-08-15 1985-05-07 Olin Corporation Process of continuously treating an alloy melt
GB2174716B (en) * 1985-04-26 1989-11-15 Mitsui Shipbuilding Eng Method of producing an iron-cobalt-and nickel-base alloy having low contents of sulphur, oxygen and nitrogen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172758A (en) * 1965-03-09 Oxygen process for producing high
US2040566A (en) * 1933-11-20 1936-05-12 Heraeus Vacuumschmelze Ag Vacuum method of manufacturing steel
US2093666A (en) * 1934-11-23 1937-09-21 Wacker Chemie Gmbh Process for treating iron and iron alloys
US2238078A (en) * 1939-01-23 1941-04-15 Percy H Royster Production of ferrochromium
US3252790A (en) * 1956-06-27 1966-05-24 Union Carbide Corp Preparation of metals and alloys
US2959478A (en) * 1956-12-22 1960-11-08 Hoerder Huettenunion Ag Method and apparatus for handling metallic melts
US3052576A (en) * 1958-02-06 1962-09-04 Soc Metallurgique Imphy Metal composition having improved oxidation- and corrosion-resistance and magnetic characteristics, and method of preparing same
US3042510A (en) * 1958-11-25 1962-07-03 Heraeus Gmbh W C Degasification of molten steel
US3003865A (en) * 1959-09-10 1961-10-10 Cameron Iron Works Inc Decarburizing process for alloy steels containing chromium
US3060015A (en) * 1960-03-22 1962-10-23 Ruhrstahl Ag Steel purification
US3240588A (en) * 1961-01-09 1966-03-15 Finkl & Sons Co Method and apparatus for treating molten metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204595A (en) * 1987-05-12 1988-11-16 Consarc Eng Metal refining process
GB2204595B (en) * 1987-05-12 1990-11-28 Consarc Eng Metal refining process

Also Published As

Publication number Publication date
FR1430516A (en) 1966-03-04
DE1458829B1 (en) 1970-11-12
US3336132A (en) 1967-08-15

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