FR2164736A1 - Carburising, soot-free gases - giving improved mechanical properties of glass metal substances - Google Patents

Carburising, soot-free gases - giving improved mechanical properties of glass metal substances

Info

Publication number
FR2164736A1
FR2164736A1 FR7245422A FR7245422A FR2164736A1 FR 2164736 A1 FR2164736 A1 FR 2164736A1 FR 7245422 A FR7245422 A FR 7245422A FR 7245422 A FR7245422 A FR 7245422A FR 2164736 A1 FR2164736 A1 FR 2164736A1
Authority
FR
France
Prior art keywords
soot
degrees
carburizing
carburising
mechanical properties
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.)
Withdrawn
Application number
FR7245422A
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.)
Schott AG
Original Assignee
Jenaer Glaswerk Schott and Gen
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 Jenaer Glaswerk Schott and Gen filed Critical Jenaer Glaswerk Schott and Gen
Publication of FR2164736A1 publication Critical patent/FR2164736A1/en
Withdrawn legal-status Critical Current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
    • C23C8/08—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

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)
  • Catalysts (AREA)

Abstract

A gas for carburizing steel and iron alloys is obtd. by mixing an inert or slightly reducing gas with hydrocarbons such as (m)ethanol, propane, butane, higher hydrocarbons or mixt., and pptg. the soot by heating the gases at 700 degrees -1000 degrees C in the presence of a catalyst. Before mixing the gases, the hydrocarbon is pref. heated to 700 degrees-1000 degrees C either alone or with a trace of the carrier gas. The carburizing process may take place simultaneously with the smelting of glass-metal substances. The substances for carburizing should have chemically pure surface and the carburizing process should be carried out with base metals present to hinder soot pptn. during carburizing.
FR7245422A 1971-12-21 1972-12-20 Carburising, soot-free gases - giving improved mechanical properties of glass metal substances Withdrawn FR2164736A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712163476 DE2163476A1 (en) 1971-12-21 1971-12-21 PROCESS FOR INCREASING THE MECHANICAL STRENGTH OF GLASS-METAL FUSIONS BY CARBURIZING IRON AND IRON ALLOYS

Publications (1)

Publication Number Publication Date
FR2164736A1 true FR2164736A1 (en) 1973-08-03

Family

ID=5828683

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7245422A Withdrawn FR2164736A1 (en) 1971-12-21 1972-12-20 Carburising, soot-free gases - giving improved mechanical properties of glass metal substances

Country Status (3)

Country Link
AT (1) AT325795B (en)
DE (1) DE2163476A1 (en)
FR (1) FR2164736A1 (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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1730247A (en) * 1926-01-12 1929-10-01 Gustav W Schwab Case-hardening process
GB573085A (en) * 1943-10-20 1945-11-06 Birmingham Electr Furnaces Ltd Improvements in the production of gaseous atmospheres for the cementation of iron and steel
FR930945A (en) * 1946-07-22 1948-02-09 Process for carburizing steel or other metals and installation for carrying out this process or similar processes
FR2040026A5 (en) * 1969-03-26 1971-01-15 Union Carbide Corp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1730247A (en) * 1926-01-12 1929-10-01 Gustav W Schwab Case-hardening process
GB573085A (en) * 1943-10-20 1945-11-06 Birmingham Electr Furnaces Ltd Improvements in the production of gaseous atmospheres for the cementation of iron and steel
FR930945A (en) * 1946-07-22 1948-02-09 Process for carburizing steel or other metals and installation for carrying out this process or similar processes
FR2040026A5 (en) * 1969-03-26 1971-01-15 Union Carbide Corp

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

Also Published As

Publication number Publication date
ATA957672A (en) 1975-01-15
DE2163476A1 (en) 1973-07-12
AT325795B (en) 1975-11-10

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Legal Events

Date Code Title Description
ST Notification of lapse