ES556978A0 - A PROCEDURE FOR TREATING METALS OR RAIL ALLOYS. - Google Patents

A PROCEDURE FOR TREATING METALS OR RAIL ALLOYS.

Info

Publication number
ES556978A0
ES556978A0 ES556978A ES556978A ES556978A0 ES 556978 A0 ES556978 A0 ES 556978A0 ES 556978 A ES556978 A ES 556978A ES 556978 A ES556978 A ES 556978A ES 556978 A0 ES556978 A0 ES 556978A0
Authority
ES
Spain
Prior art keywords
calcium
coated wire
alloys
rail
procedure
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.)
Granted
Application number
ES556978A
Other languages
Spanish (es)
Other versions
ES8801386A1 (en
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.)
Vallourec SA
Original Assignee
Vallourec 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 FR8501331A external-priority patent/FR2576320B1/en
Application filed by Vallourec SA filed Critical Vallourec SA
Publication of ES556978A0 publication Critical patent/ES556978A0/en
Publication of ES8801386A1 publication Critical patent/ES8801386A1/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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C21C7/0645—Agents used for dephosphorising or desulfurising
    • 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
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • 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
    • C21C7/06—Deoxidising, e.g. killing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Coating With Molten Metal (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Wire Processing (AREA)
  • ing And Chemical Polishing (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

The method comprises the formation of a liquid metal wherein is introduced a coated wire of which the core contains a material consisting of a calcium alloy, said alloy containing at least 75% by mass of calcium and a total contents of at least 5% by mass of NI + Al. Preferred composition: at least 80% of calcium and up to 20% of Ni and/or Al. The tests carried out by means of the device represented in figure 1 have shown that it is possible to effect the introduction of the coated wire (10) into the flowing steel (2) at a rate from 80 to 120g of Ca per ton of flowing steel and per minute without causing an excessive boil. The invention also relates to the coated wire.
ES556978A 1985-01-24 1986-07-28 Process for treating liquid metals by a calcium-containing cored wire. Expired ES8801386A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8501332 1985-01-24
FR8501331A FR2576320B1 (en) 1985-01-24 1985-01-24 PROCESS FOR TREATING LIQUID FERROUS METALS BY FURNISHED CALCIUM-CONTAINING WIRE

Publications (2)

Publication Number Publication Date
ES556978A0 true ES556978A0 (en) 1988-01-01
ES8801386A1 ES8801386A1 (en) 1988-01-01

Family

ID=26224355

Family Applications (1)

Application Number Title Priority Date Filing Date
ES556978A Expired ES8801386A1 (en) 1985-01-24 1986-07-28 Process for treating liquid metals by a calcium-containing cored wire.

Country Status (6)

Country Link
EP (1) EP0190089B1 (en)
AT (1) ATE40154T1 (en)
AU (1) AU587228B2 (en)
DE (1) DE3661841D1 (en)
ES (1) ES8801386A1 (en)
WO (1) WO1986004359A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE512574C2 (en) * 1998-08-25 2000-04-03 Partek Nordkalk Ab Elongated product that is effective in immersing in a molten steel bath for sulfur treatment
RU2152834C1 (en) * 1999-12-06 2000-07-20 Неретин Александр Алексеевич Method for making calcium wire
EP1715065A3 (en) * 2005-04-20 2007-08-15 Corus Staal BV A cored-wire for injecting into a steel melt and process of treating a steel melt using said wire
CN101906506A (en) * 2010-08-19 2010-12-08 谢应凯 Steel-covered aluminum-calcium alloy for steelmaking and preparation method thereof
RU2443785C1 (en) * 2010-09-27 2012-02-27 Закрытое акционерное общество "ФЕРРОСПЛАВ" Flux cored wire filler for out-of-furnace treatment of metallurgical melts
DE102012013662A1 (en) * 2012-07-10 2014-01-16 Mechthilde Döring-Freißmuth Filled wire and process for the treatment of molten iron
CN106350703B (en) * 2015-07-16 2018-07-10 东北大学 A kind of method for preparing kalzium metal with electrolysis raw aluminum liquid fused salt thermal reduction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974835C (en) * 1951-02-27 1961-05-10 Max Planck Inst Eisenforschung Process for deoxidizing iron and steel melts
DE1220617B (en) * 1958-02-03 1966-07-07 Res Inst Iron Steel Master alloy for the production of fine-grained steels
DE2421743B2 (en) * 1974-05-06 1979-06-07 Ototani, Tohei, Sendai (Japan) Process for producing a rod-shaped deoxidizing and desulfurizing agent for iron or steel melts or the like
AU4828279A (en) * 1978-07-12 1980-01-17 Lava Crucible-Refractories Co. Introducing agents into a vessel of molten metal
DE2948636A1 (en) * 1979-12-04 1981-06-11 Metallgesellschaft Ag, 6000 Frankfurt WIRE-SHAPED AGENT FOR TREATING METAL MELT
DE3169368D1 (en) * 1980-07-09 1985-04-25 Foseco Int Metallurgical treatment agents
EP0137618B1 (en) * 1983-08-12 1988-06-22 Pfizer Inc. Process and apparatus for adding calcium to a bath of molten ferrous material

Also Published As

Publication number Publication date
DE3661841D1 (en) 1989-02-23
WO1986004359A1 (en) 1986-07-31
AU5353886A (en) 1986-08-13
AU587228B2 (en) 1989-08-10
EP0190089B1 (en) 1989-01-18
EP0190089A1 (en) 1986-08-06
ES8801386A1 (en) 1988-01-01
ATE40154T1 (en) 1989-02-15

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Legal Events

Date Code Title Description
MM4A Patent lapsed

Effective date: 19960401