EP1249504A3 - Inoculation additive for conditioning cast iron melts treated with magnesium in a converter - Google Patents

Inoculation additive for conditioning cast iron melts treated with magnesium in a converter Download PDF

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Publication number
EP1249504A3
EP1249504A3 EP02002621A EP02002621A EP1249504A3 EP 1249504 A3 EP1249504 A3 EP 1249504A3 EP 02002621 A EP02002621 A EP 02002621A EP 02002621 A EP02002621 A EP 02002621A EP 1249504 A3 EP1249504 A3 EP 1249504A3
Authority
EP
European Patent Office
Prior art keywords
cast iron
magnesium
converter
conditioning
inoculants
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.)
Withdrawn
Application number
EP02002621A
Other languages
German (de)
French (fr)
Other versions
EP1249504A2 (en
Inventor
Markus Henkel
Peter Ettwein
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.)
Georg Fischer Automobilguss GmbH Germany
Original Assignee
Georg Fischer Automobilguss GmbH Germany
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 Georg Fischer Automobilguss GmbH Germany filed Critical Georg Fischer Automobilguss GmbH Germany
Publication of EP1249504A2 publication Critical patent/EP1249504A2/en
Publication of EP1249504A3 publication Critical patent/EP1249504A3/en
Withdrawn legal-status Critical Current

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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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/08—Manufacture of cast-iron
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron
    • C21C1/105—Nodularising additive agents
    • 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
    • C21C7/0068—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by introducing material into a current of streaming metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

In der Gusseisenherstellung werden Impfmittel verwendet um die Kristallisation gezielt auf ein möglichst regelmässiges Kristallgefüge auslösen zu können. Es wird ein Zusatz zu Impfmitteln zum Animpfen von in einem Konverter mit Magnesium behandelten Gusseisenschmelzen vorgeschlagen, wobei der Zusatz im Wesentlichen aus Sauerstoffverbindungen besteht oder diese enthält, und wobei die Sauerstoffverbindungen in der Schmelze von dem Gusseisen oder von den Impfmitteln reduzierbar sind. Insbesondere die Verwendung von Zunder als Zusatz zum Impfmittel hat den Vorteil, dass an der sauerstoffarmen Schmelze aus dem Magnesiumkonverter ohne weiteren störenden Elementen Sauerstoff zugeführt werden kann.In cast iron production, inoculants are used for crystallization specifically to be able to trigger a crystal structure as regular as possible. It is an addition to inoculants for inoculating in a converter with Magnesium-treated cast iron melts suggested, with the addition consists essentially of or contains oxygen compounds, and wherein the oxygen compounds in the melt of the cast iron or of the inoculants are reducible. In particular the use of tinder as Addition to the inoculant has the advantage that due to the oxygen-poor melt the magnesium converter without further interfering elements oxygen can be supplied.

EP02002621A 2001-04-11 2002-02-05 Inoculation additive for conditioning cast iron melts treated with magnesium in a converter Withdrawn EP1249504A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118261 2001-04-11
DE2001118261 DE10118261A1 (en) 2001-04-11 2001-04-11 Additive for inoculants for inoculating cast iron melts treated with magnesium in a converter

Publications (2)

Publication Number Publication Date
EP1249504A2 EP1249504A2 (en) 2002-10-16
EP1249504A3 true EP1249504A3 (en) 2003-08-13

Family

ID=7681339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02002621A Withdrawn EP1249504A3 (en) 2001-04-11 2002-02-05 Inoculation additive for conditioning cast iron melts treated with magnesium in a converter

Country Status (2)

Country Link
EP (1) EP1249504A3 (en)
DE (1) DE10118261A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245902A1 (en) * 1972-09-19 1974-04-04 Schmidt Gmbh Karl Spheroidal graphite cast iron prodn. - by adding magnesium carriers, treat-ment with oxygen, and inoculation
SU691495A1 (en) * 1977-04-01 1979-10-15 Институт Проблем Литья Ан Украинской Сср Cast iron modifyer
SU1011697A1 (en) * 1980-11-10 1983-04-15 Предприятие П/Я А-1125 Method for producing high-tensile cast iron
RU2006344C1 (en) * 1992-07-09 1994-01-30 Сулинский металлургический завод Method for production of iron powder of low apparent density
WO1995024508A1 (en) * 1994-03-09 1995-09-14 Elkem A/S Cast iron inoculant and method for production of cast iron inoculant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1449616A (en) * 1965-01-18 1966-05-06 Azote Office Nat Ind Homogeneous germination inoculation of cast irons and steels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245902A1 (en) * 1972-09-19 1974-04-04 Schmidt Gmbh Karl Spheroidal graphite cast iron prodn. - by adding magnesium carriers, treat-ment with oxygen, and inoculation
SU691495A1 (en) * 1977-04-01 1979-10-15 Институт Проблем Литья Ан Украинской Сср Cast iron modifyer
SU1011697A1 (en) * 1980-11-10 1983-04-15 Предприятие П/Я А-1125 Method for producing high-tensile cast iron
RU2006344C1 (en) * 1992-07-09 1994-01-30 Сулинский металлургический завод Method for production of iron powder of low apparent density
WO1995024508A1 (en) * 1994-03-09 1995-09-14 Elkem A/S Cast iron inoculant and method for production of cast iron inoculant

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198023, Derwent World Patents Index; Class M22, AN 1980-40975C, XP002245150 *
DATABASE WPI Section Ch Week 198408, Derwent World Patents Index; Class M24, AN 1984-047515, XP002245148 *
DATABASE WPI Section Ch Week 199432, Derwent World Patents Index; Class M22, AN 1994-261819, XP002245149 *

Also Published As

Publication number Publication date
DE10118261A1 (en) 2002-10-17
EP1249504A2 (en) 2002-10-16

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