GB678487A - Improvements relating to cast iron - Google Patents

Improvements relating to cast iron

Info

Publication number
GB678487A
GB678487A GB21106/50A GB2110650A GB678487A GB 678487 A GB678487 A GB 678487A GB 21106/50 A GB21106/50 A GB 21106/50A GB 2110650 A GB2110650 A GB 2110650A GB 678487 A GB678487 A GB 678487A
Authority
GB
United Kingdom
Prior art keywords
per cent
iron
cast iron
improvements relating
heat treatment
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
GB21106/50A
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.)
Mond Nickel Co Ltd
Original Assignee
Mond Nickel Co Ltd
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 Mond Nickel Co Ltd filed Critical Mond Nickel Co Ltd
Publication of GB678487A publication Critical patent/GB678487A/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)
  • Heat Treatment Of Articles (AREA)

Abstract

Malleable iron is produced by subjecting a white iron casting containing 0.03 to 0.5 per cent magnesium to a malleabilizing heat treatment to decompose massive carbides to spheroidal graphite and iron. The iron may contain 1.8 to 4 per cent C, 0.4-4 per cent Si, 0.3-5 per cent Ni, 0-2 per cent Cu, .05-2 per cent Mn and below 0.02 per cent S. The heat treatment consists in heating the iron to 840-980 DEG C for 5 to 15 hours and may include a further heating at a temperature below the gamma-alpha transformation of the iron. Specification 630,070 is referred to.
GB21106/50A 1949-09-02 1950-08-25 Improvements relating to cast iron Expired GB678487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US678487XA 1949-09-02 1949-09-02

Publications (1)

Publication Number Publication Date
GB678487A true GB678487A (en) 1952-09-03

Family

ID=22078831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21106/50A Expired GB678487A (en) 1949-09-02 1950-08-25 Improvements relating to cast iron

Country Status (1)

Country Link
GB (1) GB678487A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835619A (en) * 1947-03-22 1958-05-20 Int Nickel Co Method of heat treating cast iron
DE974097C (en) * 1954-01-09 1960-09-15 Rheinstahl Eisenwerke Gelsenki Process for the production of workpieces from hot-worked cast iron
US3189492A (en) * 1963-01-29 1965-06-15 Blackstone Corp Cast iron of high magnetic permeability

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835619A (en) * 1947-03-22 1958-05-20 Int Nickel Co Method of heat treating cast iron
DE974097C (en) * 1954-01-09 1960-09-15 Rheinstahl Eisenwerke Gelsenki Process for the production of workpieces from hot-worked cast iron
US3189492A (en) * 1963-01-29 1965-06-15 Blackstone Corp Cast iron of high magnetic permeability

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