GB740275A - Improvements in ductile cast iron - Google Patents

Improvements in ductile cast iron

Info

Publication number
GB740275A
GB740275A GB14839/53A GB1483953A GB740275A GB 740275 A GB740275 A GB 740275A GB 14839/53 A GB14839/53 A GB 14839/53A GB 1483953 A GB1483953 A GB 1483953A GB 740275 A GB740275 A GB 740275A
Authority
GB
United Kingdom
Prior art keywords
per cent
silicon
calcium
cast iron
zirconium
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
GB14839/53A
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.)
Linde Canada Inc
Original Assignee
Electric Furnace Products 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 Electric Furnace Products Co Ltd filed Critical Electric Furnace Products Co Ltd
Publication of GB740275A publication Critical patent/GB740275A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/10—Cast-iron alloys containing aluminium or silicon
    • 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
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D5/00—Heat treatments of cast-iron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/08—Making cast-iron alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite

Landscapes

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

Abstract

Spheroidal graphite cast iron is produced by the addition to a bath of cast iron containing not more than 0.05 per cent of sulphur and at least 0.75 per cent of silicon at a temperature not exceeding 1500 DEG C. of 0.28 to 1.5 per cent. of calcium and 0.25 to 1.6 per cent. of zirconium and sufficient silicon to produce a final silicon content of 1.5 to 5 per cent. The additions may be made in the form of a calcium-zirconium-silicon alloy containing 9.5 to 16 per cent calcium, 15 to 20 per cent zirconium, 50 to 65 per cent silicon and the balance iron. The sulphur content may be reduced by blowing calcium carbide and an inert gas into the molten metal through a consumable pipe.
GB14839/53A 1952-07-09 1953-05-28 Improvements in ductile cast iron Expired GB740275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US740275XA 1952-07-09 1952-07-09

Publications (1)

Publication Number Publication Date
GB740275A true GB740275A (en) 1955-11-09

Family

ID=22117248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14839/53A Expired GB740275A (en) 1952-07-09 1953-05-28 Improvements in ductile cast iron

Country Status (1)

Country Link
GB (1) GB740275A (en)

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