GB822789A - Improvements in the manufacture of spheroidal graphite cast iron - Google Patents

Improvements in the manufacture of spheroidal graphite cast iron

Info

Publication number
GB822789A
GB822789A GB37462/57A GB3746257A GB822789A GB 822789 A GB822789 A GB 822789A GB 37462/57 A GB37462/57 A GB 37462/57A GB 3746257 A GB3746257 A GB 3746257A GB 822789 A GB822789 A GB 822789A
Authority
GB
United Kingdom
Prior art keywords
agent
spheroidal graphite
cast iron
neodymium
lanthanum
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
GB37462/57A
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.)
Navistar Inc
Original Assignee
International Harverster Corp
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 International Harverster Corp filed Critical International Harverster Corp
Publication of GB822789A publication Critical patent/GB822789A/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
    • 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

A process for the production of spheroidal graphite cast iron comprises adding to a bath of molten cast iron containing not more than 0.03% sulphur an amount of spheroidizing agent, selected from the group consisting of lanthanum, neodymium, samarium, and praeseodymium, sufficient to spheriodize at least some of the free carbon present in the melt. The amount of spheroidizing agent added should be sufficient to give a residual amount in the iron of 0.02% to 0.06%. The agent may comprise lanthanum plus neodymium e.g. 40% neodymium, 60% lanthanum, with cerium present only in impurity amounts. The metal need not be cast immediately after the addition of the agent and the cast metal may be remelted and recast and the recast metal will also contain spheroidal graphite. Ferrosilicon may be added as graphitizing agent. Specifications 645,862 and 718,177 are referred to.
GB37462/57A 1956-11-30 1957-12-02 Improvements in the manufacture of spheroidal graphite cast iron Expired GB822789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US822789XA 1956-11-30 1956-11-30

Publications (1)

Publication Number Publication Date
GB822789A true GB822789A (en) 1959-10-28

Family

ID=22170190

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37462/57A Expired GB822789A (en) 1956-11-30 1957-12-02 Improvements in the manufacture of spheroidal graphite cast iron

Country Status (1)

Country Link
GB (1) GB822789A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK151103B (en) * 1971-10-15 1987-11-02 United States Pipe Foundry PROCEDURE FOR THE MANUFACTURING OF SAID IRON PAYMENT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK151103B (en) * 1971-10-15 1987-11-02 United States Pipe Foundry PROCEDURE FOR THE MANUFACTURING OF SAID IRON PAYMENT

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