GB950922A - Cast iron - Google Patents

Cast iron

Info

Publication number
GB950922A
GB950922A GB47743/62A GB4774362A GB950922A GB 950922 A GB950922 A GB 950922A GB 47743/62 A GB47743/62 A GB 47743/62A GB 4774362 A GB4774362 A GB 4774362A GB 950922 A GB950922 A GB 950922A
Authority
GB
United Kingdom
Prior art keywords
iron
silicon
weight
spheroidizing agent
melt
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
GB47743/62A
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.)
Inco Ltd
Mond Nickel Co Ltd
Original Assignee
Inco Ltd
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 Inco Ltd, Mond Nickel Co Ltd filed Critical Inco Ltd
Publication of GB950922A publication Critical patent/GB950922A/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
    • C22C37/04—Cast-iron alloys containing spheroidal graphite
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—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
    • C22C37/10—Cast-iron alloys containing aluminium or silicon

Landscapes

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

Abstract

In the production of spheroidal graphite iron particularly suitable for mechanical working, crude iron is refined by blowing with oxygen to lower the carbon content to the range of 1.2-3.6% and to remove substantially all the silicon. The bath is then deoxidized with a silicon-containing substance to give a silicon content of 0.2-0.5%; a spheroidizing agent and more silicon are next added, and the melt is cast into a chill mould to yield a carbide iron containing .C.1.2-3.6.% by weight .Si.1.0-2.0. .Mn.1.5. .P.0.07. the balance, apart from spheroidizing agent, impurities and incidental constituents, being iron. By annealing the casting above the upper critical point, e.g. at 1010-1065 DEG C. for 1-2 hours the carbides are decomposed to finely dispersed graphite spheroids and austenite. The initial crude iron contains preferably .C.2.5-4.2.% by weight .Si.2. .Mn.0.05-1. .P.0.06. .S.0.3. The spheroidizing agent is preferably magnesium, e.g. in the form of magnesium ferrosilicon, but this may be wholly or partially replaced by cerium, calcium, lithium, sodium or potassium. As exemplified a master alloy containing .Si.47.% by weight .Mg.9. .Ce.10. .Ca.10. .Fe.balance. is used. Prior to its use the melt is desulphurized with sodium carbonate followed by agitation with nitrogen. If the casting is allowed to become cold before it is annealed, it should be preheated at 540-705 DEG C. to uniform temperature before transfer to the annealing furnace; use of the products for steam traps and gear blanks is referred to. Specifications 630,070 and 678,487 are referred to.
GB47743/62A 1961-12-27 1962-12-18 Cast iron Expired GB950922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US162558A US3155498A (en) 1961-12-27 1961-12-27 Ductile iron and method of making same

Publications (1)

Publication Number Publication Date
GB950922A true GB950922A (en) 1964-02-26

Family

ID=22586148

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47743/62A Expired GB950922A (en) 1961-12-27 1962-12-18 Cast iron

Country Status (2)

Country Link
US (1) US3155498A (en)
GB (1) GB950922A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310397A (en) * 1963-07-18 1967-03-21 Inst Liteinogo Proisvodstva Method of inoculating molten cast iron
JPS599615B2 (en) * 1974-09-25 1984-03-03 株式会社リケン Tough spheroidal graphite cast iron with superplasticity and heat treatment method
US4099994A (en) * 1975-04-22 1978-07-11 Riken Piston Ring Industrial Co. Ltd. High duty ductile case iron and its heat treatment method
DE2739159C3 (en) * 1976-09-09 1980-03-13 Electro-Nite, N.V., Houthalen (Belgien) Process for the preparation of samples of spherulitic or worm line-shaped cast iron
GB2203448B (en) * 1987-03-09 1991-05-22 Hitachi Metals Ltd Nodular cast iron
SE8701987L (en) * 1987-05-26 1988-11-15 Fischer Ag Georg MAGNESIUM TREATED, COOLING ANGLE CAST IRON MATERIAL
JP4523776B2 (en) * 2003-02-12 2010-08-11 新日本製鐵株式会社 Cast iron and manufacturing method thereof
US20040171434A1 (en) * 2003-02-27 2004-09-02 Roger Cleveland Golf Co., Inc. Golf club head of ductile or gray iron
US7824605B2 (en) * 2006-12-15 2010-11-02 Dexter Foundry, Inc. As-cast carbidic ductile iron
ES2394403B2 (en) * 2009-05-28 2013-06-07 Acos Villares S.A. A PROCEDURE FOR THE PRODUCTION OF FOUNDRY ROLLERS FOR A ROLLER AND A FOUNDING ROLLER FOR A ROLLING MACHINE
US8328703B2 (en) * 2009-05-29 2012-12-11 Acos Villares S.A. Rolling mill cast roll
CN101905311B (en) * 2009-06-03 2014-07-02 盖尔道集团 Process for manufacturing cast-rolling roller of rolling mill and cast-rolling roller of rolling mill

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2256674A (en) * 1939-12-06 1941-09-23 Belle City Malleable Iron Comp Method of making malleable cast iron
US2578794A (en) * 1949-09-02 1951-12-18 Int Nickel Co Magnesium-treated malleable iron
GB702776A (en) * 1950-07-15 1954-01-20 Steinmueller Gmbh L & C Improvements relating to the production of spherulitic cast iron
US2855336A (en) * 1957-02-04 1958-10-07 Thomas W Curry Nodular iron process of manufacture
US2937084A (en) * 1957-11-18 1960-05-17 Voest Ag Process for production of high-grade cast-iron

Also Published As

Publication number Publication date
US3155498A (en) 1964-11-03

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