GB851346A - Process of nitriding hardenable steel - Google Patents

Process of nitriding hardenable steel

Info

Publication number
GB851346A
GB851346A GB20789/59A GB2078959A GB851346A GB 851346 A GB851346 A GB 851346A GB 20789/59 A GB20789/59 A GB 20789/59A GB 2078959 A GB2078959 A GB 2078959A GB 851346 A GB851346 A GB 851346A
Authority
GB
United Kingdom
Prior art keywords
nitriding
hardenable steel
objects
austenizing
cooling
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
GB20789/59A
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.)
Saab Bofors AB
Original Assignee
Bofors AB
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 Bofors AB filed Critical Bofors AB
Publication of GB851346A publication Critical patent/GB851346A/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
    • 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
    • C23C8/02—Pretreatment of the material to be coated

Landscapes

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

Abstract

A process for nitriding steel objects comprises austenizing the objects, cooling them directly to the nitriding temperature, and then nitriding. The cooling may be carried out by an inert or non-oxidizing gas and the austenizing and nitriding may be performed in a glow-discharge furnace. After nitriding the objects may be cooled to produce a martensitic or bainite structure which may then be tempered.
GB20789/59A 1958-07-22 1959-06-17 Process of nitriding hardenable steel Expired GB851346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE851346X 1958-07-22

Publications (1)

Publication Number Publication Date
GB851346A true GB851346A (en) 1960-10-12

Family

ID=20362654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20789/59A Expired GB851346A (en) 1958-07-22 1959-06-17 Process of nitriding hardenable steel

Country Status (2)

Country Link
DE (1) DE1230645B (en)
GB (1) GB851346A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148941A (en) * 1983-09-15 1985-06-05 Welsh Nat School Med Improvements in and relating to steel castings
GB2214196A (en) * 1988-01-14 1989-08-31 Skf Gmbh Case-hardening

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8310102D0 (en) * 1983-04-14 1983-05-18 Lucas Ind Plc Corrosion resistant steel components
CH682492A5 (en) * 1990-09-10 1993-09-30 Biennaform Walzprofil Ag Prodn. of steel profiles esp. for ski edges - involves nitriding of steel followed by cold working to produce austenitic steel having high strength, toughened and corrosion resistance
DE102017117483A1 (en) * 2017-08-02 2019-02-07 Schaeffler Technologies AG & Co. KG Method for producing a roller bearing component made of steel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE638536C (en) * 1933-07-25 1936-11-17 Thos Firth & John Brown Ltd Nitriding steel
US2472320A (en) * 1941-02-05 1949-06-07 Ford Motor Co Method of heat-treating steel
CH262349A (en) * 1944-05-04 1949-06-30 Oliver Homerberg Victor Process for the preparation of nitrided graphitic steel products and product obtained by this process.
GB748398A (en) * 1952-09-08 1956-05-02 Erich Fitzer Improvements in and relating to the surface treatment of ferrous metals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148941A (en) * 1983-09-15 1985-06-05 Welsh Nat School Med Improvements in and relating to steel castings
GB2214196A (en) * 1988-01-14 1989-08-31 Skf Gmbh Case-hardening
GB2214196B (en) * 1988-01-14 1992-06-03 Skf Gmbh Process for the case hardening of rolling-bearing elements of low-alloy steel containing nickel

Also Published As

Publication number Publication date
DE1230645B (en) 1966-12-15

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