BE823648A - PROCESS FOR THERMAL TREATMENT OF STEEL AND CONTROL OF SUCH TREATMENT - Google Patents

PROCESS FOR THERMAL TREATMENT OF STEEL AND CONTROL OF SUCH TREATMENT

Info

Publication number
BE823648A
BE823648A BE151752A BE151752A BE823648A BE 823648 A BE823648 A BE 823648A BE 151752 A BE151752 A BE 151752A BE 151752 A BE151752 A BE 151752A BE 823648 A BE823648 A BE 823648A
Authority
BE
Belgium
Prior art keywords
treatment
steel
control
thermal treatment
thermal
Prior art date
Application number
BE151752A
Other languages
French (fr)
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 filed Critical
Publication of BE823648A publication Critical patent/BE823648A/en

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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • 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
    • C23C8/06—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 using gases
    • C23C8/28—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 using gases more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
BE151752A 1973-12-21 1974-12-20 PROCESS FOR THERMAL TREATMENT OF STEEL AND CONTROL OF SUCH TREATMENT BE823648A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7345946A FR2271295A1 (en) 1973-12-21 1973-12-21 Gas mixtures for heat treating steel - esp. for controlled carburisation

Publications (1)

Publication Number Publication Date
BE823648A true BE823648A (en) 1975-06-20

Family

ID=9129589

Family Applications (1)

Application Number Title Priority Date Filing Date
BE151752A BE823648A (en) 1973-12-21 1974-12-20 PROCESS FOR THERMAL TREATMENT OF STEEL AND CONTROL OF SUCH TREATMENT

Country Status (2)

Country Link
BE (1) BE823648A (en)
FR (1) FR2271295A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175986A (en) * 1978-10-19 1979-11-27 Trw Inc. Inert carrier gas heat treating control process
FR2595801B1 (en) * 1986-03-12 1988-06-10 Innovatique Sa METHOD AND DEVICE FOR THE PREPARATION OF A GASEOUS MIXTURE SUITABLE FOR PROVIDING A TREATMENT ATMOSPHERE IN A THERMOCHEMICAL TREATMENT OVEN BY ION BOMBING
FR2777911B1 (en) * 1998-04-28 2000-07-28 Aubert & Duval Sa LOW PRESSURE CARBONITRURATION OF METAL ALLOY PARTS
DE10221605A1 (en) * 2002-05-15 2003-12-04 Linde Ag Method and device for the heat treatment of metallic workpieces
FR2884523B1 (en) † 2005-04-19 2008-01-11 Const Mecaniques Sa Et LOW PRESSURE CARBONITRUTING PROCESS AND FURNACE
CN117230403B (en) * 2023-11-10 2024-01-09 烟台福尔精密机械有限公司 Carburizing heat treatment control system for common rail oil sprayer machining

Also Published As

Publication number Publication date
FR2271295B1 (en) 1978-09-08
FR2271295A1 (en) 1975-12-12

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: S.A. L' AIR LIQUIDE POUR L'ETUDE ET L'EXPLOITATION

Effective date: 19911231