ES432706A1 - Methods of treating metal - Google Patents

Methods of treating metal

Info

Publication number
ES432706A1
ES432706A1 ES432706A ES432706A ES432706A1 ES 432706 A1 ES432706 A1 ES 432706A1 ES 432706 A ES432706 A ES 432706A ES 432706 A ES432706 A ES 432706A ES 432706 A1 ES432706 A1 ES 432706A1
Authority
ES
Spain
Prior art keywords
furnace
chamber
atmosphere
ammonia
methods
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
ES432706A
Other languages
Spanish (es)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of ES432706A1 publication Critical patent/ES432706A1/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
    • C23C8/06—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

Abstract

Treatment method of a ferrous material and furnace for its realization, whose method consists of heating the material in a furnace chamber that contains an atmosphere consisting of ammonia that partially dissociates within the furnace and a controlled carbon potential endothermic cement gas, checking the amount of undissociated ammonia existing in the chamber in order to provide means to control the nitriding potential of said atmosphere, the method being carried out at a temperature between 500 and 780ºC for a period of time sufficient to form ana A single-phase oil absorbent compact surface layer of epsilon (ε) compact hexagonal carbonitride, called the oxygen-contaminated composite layer. (Machine-translation by Google Translate, not legally binding)
ES432706A 1973-12-08 1974-12-07 Methods of treating metal Expired ES432706A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5698573A GB1461083A (en) 1973-12-08 1973-12-08 Methods of treating metal

Publications (1)

Publication Number Publication Date
ES432706A1 true ES432706A1 (en) 1977-03-01

Family

ID=10478048

Family Applications (1)

Application Number Title Priority Date Filing Date
ES432706A Expired ES432706A1 (en) 1973-12-08 1974-12-07 Methods of treating metal

Country Status (3)

Country Link
ES (1) ES432706A1 (en)
FR (1) FR2283244A1 (en)
GB (1) GB1461083A (en)

Families Citing this family (7)

* 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
DE4205647C2 (en) * 1992-02-25 1996-08-01 Schaeffler Waelzlager Kg Process for the thermochemical-thermal treatment of case-hardening steels
RU2048601C1 (en) * 1993-12-20 1995-11-20 Рыжов Николай Михайлович Method and apparatus to diagnose process of steels and alloys chemical thermal treatment in glow discharge
DE10227521A1 (en) * 2002-06-20 2004-01-15 Robert Bosch Gmbh Component with a region made of non-magnetic steel and a magnetic surface layer and method for its production
US10053764B2 (en) 2012-08-21 2018-08-21 Aktiebolaget Skf Method and steel component
US9828664B2 (en) * 2012-08-21 2017-11-28 Aktiebolaget Skf Method and steel component
RU2756547C1 (en) * 2020-09-24 2021-10-01 Общество с ограниченной ответственностью "НПП "НИТРИД" (ООО "НПП "Нитрид") Method for nitriding corrosion-resistant and high-alloy steels

Also Published As

Publication number Publication date
FR2283244B1 (en) 1978-02-24
FR2283244A1 (en) 1976-03-26
GB1461083A (en) 1977-01-13

Similar Documents

Publication Publication Date Title
ES442116A1 (en) Continuous carburizing method
ES432706A1 (en) Methods of treating metal
JPS5645679B2 (en)
ES459639A1 (en) Thermal treatment of glass in a fluidized bed
ES483183A1 (en) Heat treatment of material
ES451013A1 (en) Process for the production of a mixture to be utilized in the production of building materials and a device for carrying out the process
ES430100A1 (en) Method for the treatment of clay and products obtained
ES412463A1 (en) Process of nitriding ferrous parts
ES407010A1 (en) Method and apparatus for treating fine grained material
ES274865A2 (en) Process for pretreatment of ores in rotary kiln
FR2079675A5 (en) Continuous furnace - rotary bed plate contng heating gas passages to process coke, phosphorus etc
YU82676A (en) Furnace for thermally treating solid lump fuel
JPS51149810A (en) A method for controlling furnace pressure in a heating furnace provide d with a jet preheating means
ES456085A1 (en) Processes for the carburisation of metal workpieces
JPS524659A (en) Raw material supply apparatus for pyrolysis furnace
ES408026A1 (en) Method and apparatus for treating vitreous material
ES413290A1 (en) Method and apparatus for treating carboniferous shale granules prior to expansion thereof
JPS51114733A (en) Process of controlling heat quantity in a fluid bed
GB1386987A (en) Manufacture of sintered metal components
JPS5248138A (en) Thermal control system for exhaust gas
Prenosil Intensification of Carburizing Process in Continuous Furnaces by Adding Ammonia Into Carburizing Atmosphere
JPS53104534A (en) Method and apparatus for ion nitriding treatment
JPS5249917A (en) Method for operating heating furnace of rotary hearth type
JPS52129605A (en) Method and equipment for heat treatment of metal
ES424561A3 (en) Improvements in the manufacture of friction materials. (Machine-translation by Google Translate, not legally binding)