ES2104896T3 - A METHOD FOR THE PRODUCTION OF STAINLESS STEEL. - Google Patents

A METHOD FOR THE PRODUCTION OF STAINLESS STEEL.

Info

Publication number
ES2104896T3
ES2104896T3 ES92904055T ES92904055T ES2104896T3 ES 2104896 T3 ES2104896 T3 ES 2104896T3 ES 92904055 T ES92904055 T ES 92904055T ES 92904055 T ES92904055 T ES 92904055T ES 2104896 T3 ES2104896 T3 ES 2104896T3
Authority
ES
Spain
Prior art keywords
steel
production
stage
stainless steel
inert gas
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 - Lifetime
Application number
ES92904055T
Other languages
Spanish (es)
Inventor
Mikael Brunner
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.)
Linde Sverige AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20381765&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2104896(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by AGA AB filed Critical AGA AB
Application granted granted Critical
Publication of ES2104896T3 publication Critical patent/ES2104896T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising 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
    • C21C5/005—Manufacture of stainless steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

LA INVENCION SE REFIERE A UN METODO PARA LA PRODUCCION DE ACERO INOXIDABLE QUE CONSISTE EN TRATAR, EN UNA PRIMERA ETAPA, UN ACERO RICO EN CARBONO BRUTO CON UNA MEZCLA GASEOSA QUE CONTENGA OXIGENO Y GAS INERTE, CON LO QUE DISMINUYE EL CONTENIDO DE CARBONO DEL ACERO BRUTO A UN VALOR ENTRE UN 0,2 Y 0,1%. A CONTINUACION SE TRATA, EN UNA SEGUNDA ETAPA, EL BAÑO DE ACERADO CON UN GAS INERTE SOLAMENTE, HASTA QUE EL CONTENIDO DE CARBONO DESCIENDA AL VALOR DESEADO. LA INVENCION SE CARACTERIZA PORQUE EL BAÑO DE ACERADO SE TRATA EN LA PRIMERA ETAPA CON UN GAS RICO EN OXIGENO Y CON UN GAS INERTE ALTERNATIVAMENTE, HASTA QUE EL CONTENIDO DE CARBONO DEL ACERO HAYA DESCENDIDO AL VALOR DESEADO.THE INVENTION REFERS TO A METHOD FOR THE PRODUCTION OF STAINLESS STEEL THAT CONSISTS OF TREATING, IN A FIRST STAGE, A STEEL RICH IN GROSS CARBON WITH A MIXTURE OF OXYGEN AND INERT GAS, WHICH DECREASES THE CARBON CONTENT GROSS AT A VALUE BETWEEN 0.2 AND 0.1%. BELOW, IN A SECOND STAGE, THE STEEL BATH WITH INERT GAS ONLY IS TREATED, UNTIL THE CARBON CONTENT DECREASES TO THE DESIRED VALUE. THE INVENTION IS CHARACTERIZED BECAUSE THE STEEL BATH IS TREATED IN THE FIRST STAGE WITH A GAS OXYGEN RICH AND ALTERNATIVELY INERT GAS, UNTIL THE CARBON CONTENT OF THE STEEL HAS DROPPED TO THE DESIRED VALUE.

ES92904055T 1991-01-31 1992-01-28 A METHOD FOR THE PRODUCTION OF STAINLESS STEEL. Expired - Lifetime ES2104896T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9100294A SE467828B (en) 1991-01-31 1991-01-31 SET TO MANUFACTURE STAINLESS STEEL

Publications (1)

Publication Number Publication Date
ES2104896T3 true ES2104896T3 (en) 1997-10-16

Family

ID=20381765

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92904055T Expired - Lifetime ES2104896T3 (en) 1991-01-31 1992-01-28 A METHOD FOR THE PRODUCTION OF STAINLESS STEEL.

Country Status (8)

Country Link
EP (1) EP0569448B1 (en)
JP (1) JPH06505056A (en)
AT (1) ATE154647T1 (en)
DE (1) DE69220479T2 (en)
ES (1) ES2104896T3 (en)
FI (1) FI97626C (en)
SE (1) SE467828B (en)
WO (1) WO1992013975A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854932A (en) * 1973-06-18 1974-12-17 Allegheny Ludlum Ind Inc Process for production 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
EP0569448A1 (en) 1993-11-18
DE69220479T2 (en) 1997-10-16
SE9100294L (en) 1992-08-01
SE467828B (en) 1992-09-21
FI97626B (en) 1996-10-15
SE9100294D0 (en) 1991-01-31
EP0569448B1 (en) 1997-06-18
FI933417A0 (en) 1993-07-30
ATE154647T1 (en) 1997-07-15
FI97626C (en) 1997-01-27
FI933417L (en) 1993-07-30
JPH06505056A (en) 1994-06-09
DE69220479D1 (en) 1997-07-24
WO1992013975A1 (en) 1992-08-20

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