SE9203556L - Ways to make stainless steel by treating with oxygen and inert gas - Google Patents

Ways to make stainless steel by treating with oxygen and inert gas

Info

Publication number
SE9203556L
SE9203556L SE9203556A SE9203556A SE9203556L SE 9203556 L SE9203556 L SE 9203556L SE 9203556 A SE9203556 A SE 9203556A SE 9203556 A SE9203556 A SE 9203556A SE 9203556 L SE9203556 L SE 9203556L
Authority
SE
Sweden
Prior art keywords
treating
inert gas
oxygen
steel
stainless steel
Prior art date
Application number
SE9203556A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE470020B (en
SE9203556D0 (en
Inventor
Mikael Brunner
Original Assignee
Aga Ab
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 Aga Ab filed Critical Aga Ab
Priority to SE9203556A priority Critical patent/SE9203556L/en
Publication of SE9203556D0 publication Critical patent/SE9203556D0/en
Publication of SE470020B publication Critical patent/SE470020B/en
Publication of SE9203556L publication Critical patent/SE9203556L/en
Priority to PCT/SE1993/001010 priority patent/WO1994012673A1/en

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
    • 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
    • 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
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel

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)
  • Heat Treatment Of Steel (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

The present invention relates to a method of manufacturing stainless steel by treating a high carbon crude steel in a first stage with a gaseous mixture containing oxygen and inert gas, so as to lower the carbon content of the steel to a value of 0.2-0.1 %, and then treating the steel with oxygen and inert gas in a second stage. The invention is characterized by treating the steel in the second stage alternately with an oxygen-rich gas and inert gas until reaching a final carbon content corresponding to the carbon content of the finished steel.
SE9203556A 1992-11-26 1992-11-26 Ways to make stainless steel by treating with oxygen and inert gas SE9203556L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9203556A SE9203556L (en) 1992-11-26 1992-11-26 Ways to make stainless steel by treating with oxygen and inert gas
PCT/SE1993/001010 WO1994012673A1 (en) 1992-11-26 1993-11-24 A method of manufacturing stainless steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9203556A SE9203556L (en) 1992-11-26 1992-11-26 Ways to make stainless steel by treating with oxygen and inert gas

Publications (3)

Publication Number Publication Date
SE9203556D0 SE9203556D0 (en) 1992-11-26
SE470020B SE470020B (en) 1993-10-25
SE9203556L true SE9203556L (en) 1993-10-25

Family

ID=20387940

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9203556A SE9203556L (en) 1992-11-26 1992-11-26 Ways to make stainless steel by treating with oxygen and inert gas

Country Status (2)

Country Link
SE (1) SE9203556L (en)
WO (1) WO1994012673A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3531218B2 (en) * 1994-06-20 2004-05-24 大同特殊鋼株式会社 Method for producing low carbon chromium-containing steel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2364975A1 (en) * 1976-09-20 1978-04-14 Siderurgie Fse Inst Rech PROCESS FOR THE PREPARATION, IN THE CONVERTER, OF STAINLESS STEEL
DE2710577A1 (en) * 1977-03-11 1978-09-14 Thyssen Edelstahlwerke Ag METHOD OF REFRESHING STEEL
CA1333663C (en) * 1987-09-09 1994-12-27 Haruyoshi Tanabe Method of decarburizing high cr molten metal

Also Published As

Publication number Publication date
SE470020B (en) 1993-10-25
WO1994012673A1 (en) 1994-06-09
SE9203556D0 (en) 1992-11-26

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