FR788736A - Improvement in steel case-hardening processes - Google Patents

Improvement in steel case-hardening processes

Info

Publication number
FR788736A
FR788736A FR788736DA FR788736A FR 788736 A FR788736 A FR 788736A FR 788736D A FR788736D A FR 788736DA FR 788736 A FR788736 A FR 788736A
Authority
FR
France
Prior art keywords
improvement
steel case
hardening processes
hardening
processes
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
Other languages
French (fr)
Inventor
Louis Renault
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
Application granted granted Critical
Publication of FR788736A publication Critical patent/FR788736A/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
    • C23C8/08—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)
FR788736D 1935-04-13 1935-04-13 Improvement in steel case-hardening processes Expired FR788736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR788736T 1935-04-13

Publications (1)

Publication Number Publication Date
FR788736A true FR788736A (en) 1935-10-15

Family

ID=9219703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR788736D Expired FR788736A (en) 1935-04-13 1935-04-13 Improvement in steel case-hardening processes

Country Status (1)

Country Link
FR (1) FR788736A (en)

Similar Documents

Publication Publication Date Title
FR779106A (en) Improvements in knitting processes and circular knitting machines
FR788736A (en) Improvement in steel case-hardening processes
FR815521A (en) Process improvements for metal rolling
FR822891A (en) Improvements in superphosphate treatment processes
FR761517A (en) Improvements in galvanic cobalting processes
FR856526A (en) Improvements in metal phosphating processes
FR739498A (en) Improvements in special steels
FR799842A (en) Steel case-hardening process
FR793014A (en) Improvements in cathodic dispersion processes
FR793946A (en) Improvement in galvanic cobalting processes
FR796875A (en) Improvement in amplification processes
FR45876E (en) Improvements in special steels
FR817757A (en) Improvements in metallurgical processes
FR798091A (en) Improvement in anti-friction application processes
FR700410A (en) Improvements in electroplating processes
FR819873A (en) Improvements in ore reduction processes
FR811187A (en) Improvements to welding processes
FR825979A (en) Improvements in distillation processes
FR865444A (en) Improvements in phosphating or similar processes for metal parts
FR805010A (en) Improvements in special steels
FR800797A (en) Improvement in workpiece clamping processes
FR799185A (en) Improvement in enamelled metal barrels
FR784419A (en) Improvement in radio-direction finding procedures
FR812369A (en) Improvements in nitrile preparation processes
FR820476A (en) Improvements in the polymerization processes of halogen-2-butadienes-1, 3