GB1428102A - Method of refining a chromium-containing steel - Google Patents

Method of refining a chromium-containing steel

Info

Publication number
GB1428102A
GB1428102A GB183275A GB183275A GB1428102A GB 1428102 A GB1428102 A GB 1428102A GB 183275 A GB183275 A GB 183275A GB 183275 A GB183275 A GB 183275A GB 1428102 A GB1428102 A GB 1428102A
Authority
GB
United Kingdom
Prior art keywords
containing steel
refining
chromium
jan
nozzle
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
GB183275A
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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
Priority claimed from FR7403188A external-priority patent/FR2259912A1/en
Priority claimed from FR7437356A external-priority patent/FR2291287A2/en
Application filed by Creusot Loire SA filed Critical Creusot Loire SA
Publication of GB1428102A publication Critical patent/GB1428102A/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
    • 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
    • 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

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

1428102 Refining Cr-containing steel CREUSOT-LOIRE 15 Jan 1975 [31 Jan 1974 13 Nov 1974] 1832/75 Heading C7D Chromium-containing steel is refined by subsurface blowing from a nozzle having three concentric tubes, through the outermost of which a fluid for protecting the nozzle from wear (e.g. fuel oil or air) is supplied and through the inner two are separately supplied water vapour and a non-oxidizing gas (e.g. H 2 , Ar, He or N 2 ). Nitrogen is used when a high-nitrogen steel is required.
GB183275A 1974-01-31 1975-01-15 Method of refining a chromium-containing steel Expired GB1428102A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7403188A FR2259912A1 (en) 1974-01-31 1974-01-31 Stainless steels mfr with very low carbon content - nitrogen, steam and fuel-oil blown through triple concentric jets
FR7437356A FR2291287A2 (en) 1974-11-13 1974-11-13 BLOWING METHOD WITH A VIEW TO OBTAINING VERY LOW CARBON CONTENTS IN CHROME STEELS

Publications (1)

Publication Number Publication Date
GB1428102A true GB1428102A (en) 1976-03-17

Family

ID=26218156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB183275A Expired GB1428102A (en) 1974-01-31 1975-01-15 Method of refining a chromium-containing steel

Country Status (8)

Country Link
JP (1) JPS5512163B2 (en)
CA (1) CA1029558A (en)
DD (1) DD116262A5 (en)
DE (1) DE2460291A1 (en)
ES (1) ES433754A1 (en)
GB (1) GB1428102A (en)
IN (1) IN143768B (en)
IT (1) IT1027311B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6119230Y2 (en) * 1980-07-25 1986-06-10
EP0785284B1 (en) * 1995-08-01 2002-11-13 Nippon Steel Corporation Process for vacuum refining of molten steel

Also Published As

Publication number Publication date
JPS5512163B2 (en) 1980-03-31
AU7770275A (en) 1976-07-29
IN143768B (en) 1978-01-28
IT1027311B (en) 1978-11-20
ES433754A1 (en) 1976-12-01
DE2460291A1 (en) 1975-08-07
DD116262A5 (en) 1975-11-12
CA1029558A (en) 1978-04-18
JPS50109111A (en) 1975-08-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19950114