GB654911A - Improvements in or relating to the production of cast irons - Google Patents

Improvements in or relating to the production of cast irons

Info

Publication number
GB654911A
GB654911A GB2822448A GB2822448A GB654911A GB 654911 A GB654911 A GB 654911A GB 2822448 A GB2822448 A GB 2822448A GB 2822448 A GB2822448 A GB 2822448A GB 654911 A GB654911 A GB 654911A
Authority
GB
United Kingdom
Prior art keywords
cast iron
magnesia
magnesium
added
mixture
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
GB2822448A
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.)
British Cast Iron Research Association
Original Assignee
British Cast Iron Research Association
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 British Cast Iron Research Association filed Critical British Cast Iron Research Association
Priority to GB2822448A priority Critical patent/GB654911A/en
Publication of GB654911A publication Critical patent/GB654911A/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
    • C21C1/00—Refining of pig-iron; 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

Landscapes

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

Abstract

Magnesium metal is introduced into cast iron by bringing molten iron into contact with magnesia or a magnesia-generating compound at temperatures above 1650 DEG C or with a mixture containing magnesia and silicon at temperatures above 1100 DEG C. The added mixture may contain magnesia, lime and silicon (or ferrosilicon in approximately stoichiometric proportions), together with a binding agent and an accelerator, namely, a halide such as magnesium chloride, calcium fluoride or magnesium fluoride. The mixture may be used in the form of briquettes which are held under the surface of the melt. The method may be applied to the desulphurizing of cast iron or for producing a grey cast iron in which free carbon is present wholly or predominantly in the nodular form. In the latter case the amount of magnesium added is more than enough to reduce the sulphur content of the cast iron below 0.02 per cent, the excess being retained in the cast iron. A graphitizing agent may be added to ensure the production of a grey cast iron hypereutectic in relation to carbon. Specification 645,862 is referred to.
GB2822448A 1948-10-30 1948-10-30 Improvements in or relating to the production of cast irons Expired GB654911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2822448A GB654911A (en) 1948-10-30 1948-10-30 Improvements in or relating to the production of cast irons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2822448A GB654911A (en) 1948-10-30 1948-10-30 Improvements in or relating to the production of cast irons

Publications (1)

Publication Number Publication Date
GB654911A true GB654911A (en) 1951-07-04

Family

ID=10272276

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2822448A Expired GB654911A (en) 1948-10-30 1948-10-30 Improvements in or relating to the production of cast irons

Country Status (1)

Country Link
GB (1) GB654911A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046331B (en) * 1955-12-23 1958-12-11 Dr Fredrik Hurum Briquette for desulphurisation, deoxidation, refining, refining and degassing of molten metal
DE1058746B (en) * 1955-12-23 1959-06-04 Dr Fredrik Hurum Use of a gas seal when treating molten metal using immersion briquettes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046331B (en) * 1955-12-23 1958-12-11 Dr Fredrik Hurum Briquette for desulphurisation, deoxidation, refining, refining and degassing of molten metal
DE1058746B (en) * 1955-12-23 1959-06-04 Dr Fredrik Hurum Use of a gas seal when treating molten metal using immersion briquettes

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