FR2155078A5 - Spheroidal cast irons - strengthening by thermal and nitriding processes - Google Patents

Spheroidal cast irons - strengthening by thermal and nitriding processes

Info

Publication number
FR2155078A5
FR2155078A5 FR7135980A FR7135980A FR2155078A5 FR 2155078 A5 FR2155078 A5 FR 2155078A5 FR 7135980 A FR7135980 A FR 7135980A FR 7135980 A FR7135980 A FR 7135980A FR 2155078 A5 FR2155078 A5 FR 2155078A5
Authority
FR
France
Prior art keywords
degrees
followed
cast irons
nitriding
thermal
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
FR7135980A
Other languages
French (fr)
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.)
KOLOMENSKY TEPLOVOZOSTRO
Original Assignee
KOLOMENSKY TEPLOVOZOSTRO
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 KOLOMENSKY TEPLOVOZOSTRO filed Critical KOLOMENSKY TEPLOVOZOSTRO
Priority to FR7135980A priority Critical patent/FR2155078A5/en
Application granted granted Critical
Publication of FR2155078A5 publication Critical patent/FR2155078A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

Articles cast from spheroidal graphite cast irons can be strengthened by a thermal treatment consisting of heating to 880-920 degrees C to completely austenitise if possible, followed by ageing or tempering at 600 degrees C. This thermal treatment is then followed by nitriding at 550-600 degrees C using gas liquid or ionic nitriding agents. The material can then be further hardened by shot blasting, or following removal of the nitrided layer, by pressure hardening in areas where most operative stresses are expected. Material treated in this way finds particular application for internal combustion engine parts partic. where high wear resistance and high fatigue resistance is required, e.g. crankshafts cylinder liners, gear wheels, etc.
FR7135980A 1971-10-06 1971-10-06 Spheroidal cast irons - strengthening by thermal and nitriding processes Expired FR2155078A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7135980A FR2155078A5 (en) 1971-10-06 1971-10-06 Spheroidal cast irons - strengthening by thermal and nitriding processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7135980A FR2155078A5 (en) 1971-10-06 1971-10-06 Spheroidal cast irons - strengthening by thermal and nitriding processes

Publications (1)

Publication Number Publication Date
FR2155078A5 true FR2155078A5 (en) 1973-05-18

Family

ID=9083993

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7135980A Expired FR2155078A5 (en) 1971-10-06 1971-10-06 Spheroidal cast irons - strengthening by thermal and nitriding processes

Country Status (1)

Country Link
FR (1) FR2155078A5 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560892A1 (en) * 1984-03-12 1985-09-13 Peugeot METHOD FOR THE SURFACE TREATMENT OF STEEL OR CAST IRON PARTS BY ION BOMBING
EP0479409A2 (en) * 1990-10-04 1992-04-08 Daidousanso Co., Ltd. Austenitic stainless steel screw and a method for manufacturing the same
EP0532806A1 (en) * 1991-09-20 1993-03-24 Daido Hoxan Inc. A hard austenitic stainless steel screw and a method for manufacturing the same
EP0536986A1 (en) * 1991-10-08 1993-04-14 Dowa Mining Co., Ltd. A method for steel surface hardening treatment and an apparatus therefor
US5340412A (en) * 1991-08-31 1994-08-23 Daidousanso Co., Ltd. Method of fluorinated nitriding of austenitic stainless steel screw
US5460875A (en) * 1990-10-04 1995-10-24 Daidousanso Co., Ltd. Hard austenitic stainless steel screw and a method for manufacturing the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560892A1 (en) * 1984-03-12 1985-09-13 Peugeot METHOD FOR THE SURFACE TREATMENT OF STEEL OR CAST IRON PARTS BY ION BOMBING
EP0159222A1 (en) * 1984-03-12 1985-10-23 Automobiles Peugeot Process for the surface treatment of iron or cast iron parts by ionic bombardment
EP0479409A2 (en) * 1990-10-04 1992-04-08 Daidousanso Co., Ltd. Austenitic stainless steel screw and a method for manufacturing the same
EP0479409A3 (en) * 1990-10-04 1992-09-30 Daidousanso Co., Ltd. Austenitic stainless steel screw and a method for manufacturing the same
US5460875A (en) * 1990-10-04 1995-10-24 Daidousanso Co., Ltd. Hard austenitic stainless steel screw and a method for manufacturing the same
US5340412A (en) * 1991-08-31 1994-08-23 Daidousanso Co., Ltd. Method of fluorinated nitriding of austenitic stainless steel screw
EP0532806A1 (en) * 1991-09-20 1993-03-24 Daido Hoxan Inc. A hard austenitic stainless steel screw and a method for manufacturing the same
EP0536986A1 (en) * 1991-10-08 1993-04-14 Dowa Mining Co., Ltd. A method for steel surface hardening treatment and an apparatus therefor

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Legal Events

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ST Notification of lapse