JPS6439322A - Production of thick-walled ductile cast iron having excellent ductility and toughness - Google Patents

Production of thick-walled ductile cast iron having excellent ductility and toughness

Info

Publication number
JPS6439322A
JPS6439322A JP19536087A JP19536087A JPS6439322A JP S6439322 A JPS6439322 A JP S6439322A JP 19536087 A JP19536087 A JP 19536087A JP 19536087 A JP19536087 A JP 19536087A JP S6439322 A JPS6439322 A JP S6439322A
Authority
JP
Japan
Prior art keywords
cast iron
toughness
thick
excellent ductility
ductile cast
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.)
Pending
Application number
JP19536087A
Other languages
Japanese (ja)
Inventor
Kiyoshi Uchida
Shingo Sato
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP19536087A priority Critical patent/JPS6439322A/en
Publication of JPS6439322A publication Critical patent/JPS6439322A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To produce a thick-walled ductile cast iron having excellent ductility and toughness by subjecting a spheroidal graphite cast iron contg. specific compsn. ratios of C, Si, Mn, P, S, Ni, and Mg to specific hot working and holding the cast iron at a specific temp., then cooling the same. CONSTITUTION:The spheroidal graphite cast iron contg. 3.0-4.0wt.% C, 1.5-25.% Si, <=0.50% Mn, <=0.030% P, <=0.010% S, <=1.0% Ni, and 0.020%n0.100% Mg is subjected to 5-50% hot rolling in a 110-700 deg.C range by rolling down, hot forging, etc. The graphite is thereby extended and the casting defects such as porous shrinkage cavities are compressed. The cast iron after the hot working is held for 4-40hr in a 700-600 deg.C range to convert austenite to ferrite. This cast iron is cooled down to room temp. by air cooling, etc. The thick-walled ductile cast iron having the excellent mechanical properties to the center of the thickness and the excellent ductility and toughness is thereby easily obtd.
JP19536087A 1987-08-06 1987-08-06 Production of thick-walled ductile cast iron having excellent ductility and toughness Pending JPS6439322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19536087A JPS6439322A (en) 1987-08-06 1987-08-06 Production of thick-walled ductile cast iron having excellent ductility and toughness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19536087A JPS6439322A (en) 1987-08-06 1987-08-06 Production of thick-walled ductile cast iron having excellent ductility and toughness

Publications (1)

Publication Number Publication Date
JPS6439322A true JPS6439322A (en) 1989-02-09

Family

ID=16339880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19536087A Pending JPS6439322A (en) 1987-08-06 1987-08-06 Production of thick-walled ductile cast iron having excellent ductility and toughness

Country Status (1)

Country Link
JP (1) JPS6439322A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557078U (en) * 1992-01-14 1993-07-30 松下電工株式会社 Flush toilet
WO2017013165A1 (en) * 2015-07-22 2017-01-26 Eickhoff Giesserei Gmbh Ferritic cast iron having spheroidal graphite
CN107177711A (en) * 2017-06-27 2017-09-19 江苏力源金河铸造有限公司 A kind of smelting technology of thin-walled Ferrite nodular iron casting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557078U (en) * 1992-01-14 1993-07-30 松下電工株式会社 Flush toilet
WO2017013165A1 (en) * 2015-07-22 2017-01-26 Eickhoff Giesserei Gmbh Ferritic cast iron having spheroidal graphite
CN107949649A (en) * 2015-07-22 2018-04-20 艾柯夫铸造有限责任公司 Ferrite cast iron with globular graphite
CN107177711A (en) * 2017-06-27 2017-09-19 江苏力源金河铸造有限公司 A kind of smelting technology of thin-walled Ferrite nodular iron casting

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