GB525478A - Improved manufacture of malleable iron - Google Patents

Improved manufacture of malleable iron

Info

Publication number
GB525478A
GB525478A GB5838/39A GB583839A GB525478A GB 525478 A GB525478 A GB 525478A GB 5838/39 A GB5838/39 A GB 5838/39A GB 583839 A GB583839 A GB 583839A GB 525478 A GB525478 A GB 525478A
Authority
GB
United Kingdom
Prior art keywords
per cent
heating
per
tellurium
feb
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
GB5838/39A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB525478A publication Critical patent/GB525478A/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
    • C22C33/00—Making ferrous alloys
    • C22C33/08—Making cast-iron alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Mold Materials And Core Materials (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

525,478. Alloys; annealing. GENERAL MOTORS CORPORATION. Feb. 22, 1939, Nos. 5838 and 5839. Convention dates. Feb. 23, 1938, and Sept. 10, 1938. Drawings to Specification. [Classes 72 and 82 (i)] Malleable iron castings are made from iron containing graphitizing agents equivalent in effect to 1.3 per cent. or more of silicon, particularly 1.3 - 2.25 per cent., and a small amount of tellurium, which may be 0.0001 - 0.2 per cent. with or without 0.25 - 2' per cent. of copper and 0.1 - 0.75 per cent. of molybdenum. The carbon content may be 2 - 3.5 per cent. The tellurium may be added as such, or as oxide or other compound, or as an alloy. The annealing operation may comprise heating to 900‹F. for 4 hours followed by heating to 1700‹F.; or heating to 1700‹F. for about 8 hours, cooling to 1400‹F. at the rate of about 150‹F. per hour and then to 1300‹F. at 7‹F per hour. Hardness may be increased by quenching in oil or air from about 1700‹F.
GB5838/39A 1938-02-23 1939-02-22 Improved manufacture of malleable iron Expired GB525478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US525478XA 1938-02-23 1938-02-23

Publications (1)

Publication Number Publication Date
GB525478A true GB525478A (en) 1940-08-29

Family

ID=21978327

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5838/39A Expired GB525478A (en) 1938-02-23 1939-02-22 Improved manufacture of malleable iron

Country Status (1)

Country Link
GB (1) GB525478A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1079089B (en) * 1954-08-04 1960-04-07 Renault Process for the production of piston rings
DE1081034B (en) * 1954-05-20 1960-05-05 Renault Malleable cast iron
DE1287594B (en) * 1958-02-06 1969-01-23 Renault Heat treatment of castings made of solidifying white cast iron
EP0120120A1 (en) * 1983-02-28 1984-10-03 Krupp Polysius Ag Cast iron for components of coke furnaces
EP1595964A1 (en) * 2003-02-12 2005-11-16 Nippon Steel Corporation Cast iron billet excelling in workability and process for producing the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1081034B (en) * 1954-05-20 1960-05-05 Renault Malleable cast iron
DE1079089B (en) * 1954-08-04 1960-04-07 Renault Process for the production of piston rings
DE1287594B (en) * 1958-02-06 1969-01-23 Renault Heat treatment of castings made of solidifying white cast iron
EP0120120A1 (en) * 1983-02-28 1984-10-03 Krupp Polysius Ag Cast iron for components of coke furnaces
EP1595964A1 (en) * 2003-02-12 2005-11-16 Nippon Steel Corporation Cast iron billet excelling in workability and process for producing the same
EP1595964A4 (en) * 2003-02-12 2009-09-23 Nippon Steel Corp Cast iron billet excelling in workability and process for producing the same
US8302667B2 (en) 2003-02-12 2012-11-06 Nippon Steel Corporation Cast iron semi-finished product excellent in workability and method of production of the same

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