GB1138631A - Inoculation of iron and steel - Google Patents

Inoculation of iron and steel

Info

Publication number
GB1138631A
GB1138631A GB502/66A GB50266A GB1138631A GB 1138631 A GB1138631 A GB 1138631A GB 502/66 A GB502/66 A GB 502/66A GB 50266 A GB50266 A GB 50266A GB 1138631 A GB1138631 A GB 1138631A
Authority
GB
United Kingdom
Prior art keywords
iron
casting
weight
sponge
steel
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
GB502/66A
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.)
Office National Industriel de lAzote
Original Assignee
Office National Industriel de lAzote
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 Office National Industriel de lAzote filed Critical Office National Industriel de lAzote
Publication of GB1138631A publication Critical patent/GB1138631A/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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/034—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/148—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals embracing or surrounding the resistive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/28—Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

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

Abstract

1,138,631. Casting processes; continuous casting. OFFICE NATIONAL INDUSTRIEL DE L'AZOTE. 5 Jan., 1966 [18 Jan., 1965 ; 8 July, 1965], No. 502/66. Heading B3F. [Also in Division C7] Iron or steel are, during casting, inoculated with up to 5% by weight of a powdered non- pyrophoric sponge iron containing not more than 1% by weight of non-metallic impurities, at least 77% by weight of iron, and 0-22% of oxygen exclusively in the form of ferrous oxide, the sponge iron being constituted by aggregates of elemental particles of a size between 40 and 2000 microns. A single addition is made in the case of a batch casting process, while for a continuous casting process the sponge may be added continuously; where a very low carbon steel is being treated a simultaneous addition of finely divided carbon may be made to increase the evolution of carbon monoxide. The effect of the treatment is to produce a finer, homogeneous grain structure and to remove oxidizable impurities and dissolved gases. When treating spheroidal graphite iron it is stated to be possible to obtain a ferritic matrix directly without the necessity of an annealing step subsequent to casting.
GB502/66A 1965-01-18 1966-01-05 Inoculation of iron and steel Expired GB1138631A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2307A FR1449616A (en) 1965-01-18 1965-01-18 Homogeneous germination inoculation of cast irons and steels
FR23977A FR88294E (en) 1965-01-18 1965-07-08 Homogeneous germination inoculation of cast irons and steels

Publications (1)

Publication Number Publication Date
GB1138631A true GB1138631A (en) 1969-01-01

Family

ID=26161575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB502/66A Expired GB1138631A (en) 1965-01-18 1966-01-05 Inoculation of iron and steel

Country Status (7)

Country Link
US (1) US3370939A (en)
BE (1) BE675222A (en)
DE (1) DE1508229B1 (en)
ES (1) ES322166A1 (en)
FR (2) FR1449616A (en)
GB (1) GB1138631A (en)
NL (1) NL6600612A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1758004B1 (en) * 1968-03-20 1972-05-31 Degussa Use of silicon dioxide as a nucleating melt additive in cast iron
DE10118261A1 (en) * 2001-04-11 2002-10-17 Fischer Georg Automobilguss Additive for inoculants for inoculating cast iron melts treated with magnesium in a converter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973145C (en) * 1944-11-10 1959-12-10 Ruhrstahl Ag Process for improving steel melts

Also Published As

Publication number Publication date
NL6600612A (en) 1966-07-19
ES322166A1 (en) 1966-11-01
US3370939A (en) 1968-02-27
FR1449616A (en) 1966-05-06
FR88294E (en) 1967-01-06
DE1508229B1 (en) 1970-12-10
BE675222A (en) 1966-05-16

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