ES2139840T3 - Procedimiento para la fabricacion de un acero que contiene cromo y presenta un bajo contenido de carbono. - Google Patents

Procedimiento para la fabricacion de un acero que contiene cromo y presenta un bajo contenido de carbono.

Info

Publication number
ES2139840T3
ES2139840T3 ES95303347T ES95303347T ES2139840T3 ES 2139840 T3 ES2139840 T3 ES 2139840T3 ES 95303347 T ES95303347 T ES 95303347T ES 95303347 T ES95303347 T ES 95303347T ES 2139840 T3 ES2139840 T3 ES 2139840T3
Authority
ES
Spain
Prior art keywords
gas
tuning
oven
steel
reduced pressure
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
ES95303347T
Other languages
English (en)
Inventor
Yoshio Inagaki
Motoshi Shinkai
Masahide Daido Tokushuko Tsuno
Akihiro Daido Tokushu Nagatani
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Application granted granted Critical
Publication of ES2139840T3 publication Critical patent/ES2139840T3/es
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
    • 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
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum

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)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

EN LA PRODUCCION DE ACERO INOXIDABLE SE INTENTA REDUCIR LA MAYOR TEMPERATURA ALCANZADA DURANTE EL AFINADO DEL ACERO FUNDIDO AL TIEMPO QUE SE MANTIENE LA TEMPERATURA DE COLADA PARA ASI PROLONGAR LA VIDA DE LOS MATERIALES REFRACTARIOS DEL HORNO DE AFINADO. TRAS LLEVAR A CABO UN TRATAMIENTO DE DESCARBURACION A PRESION ATMOSFERICA EN EL HORNO DE AFINADO A BASE DE INYECTAR UN GAS QUE CONTENGA OXIGENO EN EL ACERO FUNDIDO, SE SIGUE LLEVANDO A CABO UNA DESCARBURACION DEL ACERO FUNDIDO Y UNA REDUCCION DE LOS OXIDOS DE CROMO BAJO AGITACION A BASE DE INYECTAR UN GAS NO OXIDANTE A PRESION REDUCIDA Y, A CONTINUACION, SE CARGA UN AGENTE REDUCTOR EN EL HORNO PARA REDUCIR LOS OXIDOS DE CROMO MANTENIENDO LA PRESION REDUCIDA. CON LA OPERACION A PRESION ATMOSFERICA ANTEDICHA LA CANTIDAD TOTAL DE GAS DE OXIGENO ES MENOR QUE EN UN PROCESO CONVENCIONAL, MIENTRAS QUE EN LA ETAPA FINAL DE LA OPERACION A PRESION REDUCIDA SE VUELVE A INYECTAR UN GAS QUE CONTENGA OXIGENO EN UNA CANTIDAD EQUIVALENTE AL EQUILIBRIO DE LA CANTIDAD DE GAS DE OXIGENO NORMALMENTE INYECTADA EN LA OPERACION A PRESION ATMOSFERICA ANTEDICHA PARA ASI PROVOCAR UNA GENERACION DE CALOR MEDIANTE UNA REACCION POR OXIDACION DEL CROMO AUMENTANDO ASI LA TEMPERATURA DEL ACERO FUNDIDO A UNA TEMPERATURA NECESARIA TENIENDO EN CUENTA EL SUBSIGUIENTE DESCENSO DE LA TEMPERATURA.
ES95303347T 1994-06-20 1995-05-18 Procedimiento para la fabricacion de un acero que contiene cromo y presenta un bajo contenido de carbono. Expired - Lifetime ES2139840T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16261694A JP3531218B2 (ja) 1994-06-20 1994-06-20 低炭素含クロム鋼の製造方法

Publications (1)

Publication Number Publication Date
ES2139840T3 true ES2139840T3 (es) 2000-02-16

Family

ID=15757995

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95303347T Expired - Lifetime ES2139840T3 (es) 1994-06-20 1995-05-18 Procedimiento para la fabricacion de un acero que contiene cromo y presenta un bajo contenido de carbono.

Country Status (7)

Country Link
US (1) US5547489A (es)
EP (1) EP0688877B1 (es)
JP (1) JP3531218B2 (es)
KR (1) KR100396029B1 (es)
DE (1) DE69512967T2 (es)
ES (1) ES2139840T3 (es)
TW (1) TW346505B (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621143A1 (de) * 1996-01-31 1997-08-07 Mannesmann Ag Verfahren zur Erzeugung nichtrostender Stähle
KR20040014599A (ko) * 2001-07-02 2004-02-14 신닛뽄세이테쯔 카부시키카이샤 크롬함유 용강의 탈탄 정련 방법
BRPI0216050B1 (pt) * 2001-09-20 2015-12-29 Nippon Steel & Sumitomo Metal Corp aparelho de refino para aços ao cromo fundidos
CN102041351B (zh) * 2010-11-07 2012-10-03 山西太钢不锈钢股份有限公司 一种氩氧炉精炼铬镍奥氏体不锈钢的调渣方法
JP5583042B2 (ja) 2011-02-04 2014-09-03 株式会社デンソー 電子制御装置
DE102013014856A1 (de) * 2013-04-15 2014-10-16 Sms Siemag Ag Verfahren und Anlage zur Herstellung von Ferrolegierungen mit niedrigem Kohlenstoffgehalt in einem Vakuum-Konverter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174212A (en) * 1978-03-10 1979-11-13 A. Finkl & Sons Co. Method for the refining of steel
JPH01294818A (ja) * 1988-05-23 1989-11-28 Nkk Corp ステンレス鋼の真空処理方法
JP2850407B2 (ja) * 1989-04-18 1999-01-27 大同特殊鋼株式会社 含クロム溶鋼の精錬法
JPH03257115A (ja) * 1990-03-07 1991-11-15 Kawasaki Steel Corp ステンレス溶鋼の脱炭精錬方法
JP2850546B2 (ja) * 1991-02-06 1999-01-27 大同特殊鋼株式会社 高クロム鋼の精錬方法
US5304231A (en) * 1991-12-24 1994-04-19 Kawasaki Steel Corporation Method of refining of high purity steel
SE470020B (sv) * 1992-11-26 1993-10-25 Aga Ab Sätt att tillverka rostfritt stål genom behandling med syre och inertgas
DE4328045C2 (de) * 1993-08-20 2001-02-08 Ald Vacuum Techn Ag Verfahren zum Entkohlen von kohlenstoffhaltigen Metallschmelzen
KR101398444B1 (ko) 2013-11-06 2014-05-27 주식회사 코베아 밸브

Also Published As

Publication number Publication date
US5547489A (en) 1996-08-20
DE69512967D1 (de) 1999-12-02
JP3531218B2 (ja) 2004-05-24
EP0688877B1 (en) 1999-10-27
EP0688877A1 (en) 1995-12-27
TW346505B (en) 1998-12-01
DE69512967T2 (de) 2000-04-06
JPH083615A (ja) 1996-01-09
KR100396029B1 (ko) 2004-01-07
KR960001140A (ko) 1996-01-25

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