GB952363A - Heat treatment of steels with a mixed gas of nitrogen and hydrocarbon - Google Patents

Heat treatment of steels with a mixed gas of nitrogen and hydrocarbon

Info

Publication number
GB952363A
GB952363A GB3311760A GB3311760A GB952363A GB 952363 A GB952363 A GB 952363A GB 3311760 A GB3311760 A GB 3311760A GB 3311760 A GB3311760 A GB 3311760A GB 952363 A GB952363 A GB 952363A
Authority
GB
United Kingdom
Prior art keywords
hydrocarbon
nitrogen
steels
heat treatment
mixed gas
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
GB3311760A
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of GB952363A publication Critical patent/GB952363A/en
Expired 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
    • 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
    • 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
    • C23C8/08—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 only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

Abstract

<PICT:0952363/C3/1> A process of heat treating steel comprises carburizing the steel in the presence of a gas consisting of 99.5-98% of nitrogen and 0.5-2.0% of a hydrocarbon, the residual gas from the carburizing process being used for one or more of hardening, tempering, normalizing, and annealing. The hydrocarbon may be benzene. As shown, a series of furnaces A-D may each be provided with valved pipes 2a-2d for the addition of the hydrocarbon, and nitrogen may be supplied through a pipe 1. The furnaces may be interconnected by piping and valves and a pump 17 so that one or more furnaces may be provided with caruburizing gas and the remainder with the residual gas from the carburizing furnace.
GB3311760A 1959-10-07 1960-09-27 Heat treatment of steels with a mixed gas of nitrogen and hydrocarbon Expired GB952363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3151259 1959-10-07

Publications (1)

Publication Number Publication Date
GB952363A true GB952363A (en) 1964-03-18

Family

ID=12333248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3311760A Expired GB952363A (en) 1959-10-07 1960-09-27 Heat treatment of steels with a mixed gas of nitrogen and hydrocarbon

Country Status (1)

Country Link
GB (1) GB952363A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472034A1 (en) * 1979-12-20 1981-06-26 Maag Zahnraeder & Maschinen Ag METHOD OF ADJUSTABLE FUEL OR ADJUSTABLE HEATING OF STEEL PARTS AND UNDER PROTECTIVE ATMOSPHERE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472034A1 (en) * 1979-12-20 1981-06-26 Maag Zahnraeder & Maschinen Ag METHOD OF ADJUSTABLE FUEL OR ADJUSTABLE HEATING OF STEEL PARTS AND UNDER PROTECTIVE ATMOSPHERE
EP0031034A1 (en) * 1979-12-20 1981-07-01 Maag-Zahnräder und -Maschinen Aktiengesellschaft Process for the adjustable carburizing or heating in a protective gas of steel work pieces

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