FR638024A - Procédé de durcissement de la fonte dans ses couches superficielles - Google Patents

Procédé de durcissement de la fonte dans ses couches superficielles

Info

Publication number
FR638024A
FR638024A FR638024DA FR638024A FR 638024 A FR638024 A FR 638024A FR 638024D A FR638024D A FR 638024DA FR 638024 A FR638024 A FR 638024A
Authority
FR
France
Prior art keywords
cast iron
surface layers
hardening cast
hardening
layers
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
English (en)
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.)
AUBERT ET DUVAL FRERES SOC
Original Assignee
AUBERT ET DUVAL FRERES SOC
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 AUBERT ET DUVAL FRERES SOC filed Critical AUBERT ET DUVAL FRERES SOC
Application granted granted Critical
Publication of FR638024A publication Critical patent/FR638024A/fr
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
    • 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
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding 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)
FR638024D 1927-03-17 1927-07-20 Procédé de durcissement de la fonte dans ses couches superficielles Expired FR638024A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE638024X 1927-03-17

Publications (1)

Publication Number Publication Date
FR638024A true FR638024A (fr) 1928-05-14

Family

ID=6579656

Family Applications (1)

Application Number Title Priority Date Filing Date
FR638024D Expired FR638024A (fr) 1927-03-17 1927-07-20 Procédé de durcissement de la fonte dans ses couches superficielles

Country Status (1)

Country Link
FR (1) FR638024A (fr)

Similar Documents

Publication Publication Date Title
FR719891A (fr) Procédé de durcissement des substances albumineuses
FR638024A (fr) Procédé de durcissement de la fonte dans ses couches superficielles
FR679464A (fr) Soupape pour substances poussiéreuses
FR666571A (fr) Rondelle de sûreté pour écrous
FR650815A (fr) Procédé perfectionné de fabrication de la fonte
FR652234A (fr) Procédé pour la congélation rapide des bio-colloïdes
FR644440A (fr) Procédé pour le traitement de la tourbe
FR655041A (fr) Procédé de durcissement de surfaces lisses en acier
FR649674A (fr) Procédé pour la fabrication de la fonte
FR696736A (fr) Procédé de durcissement des couches de gélatine
FR651242A (fr) Perfectionnements dans la fabrication de la fonte
FR631298A (fr) Procédé de construction
FR644687A (fr) Pavés en fonte
FR632329A (fr) Procédé de consolidation des ponts métalliques
DK39736C (da) Fremgangsmaade til Overfladehærdning af Støbejærn.
FR624916A (fr) Procédé de réduction de minerais
FR605359A (fr) Perfectionnements dans le mode de traitement des mélanges céramiques
FR648205A (fr) Procédé métallurgique
FR655602A (fr) Perfectionnements apportés à la fabrication de la fonte
FR628817A (fr) Procédé de réduction de minerais
FR618251A (fr) Procédé pour la fusion du fer dans les cubilots
FR632340A (fr) Phosphates de fer fortement acides et procédé pour les fabriquer
FR609908A (fr) Procédé de construction
FR634676A (fr) Procédé de construction de chaussée
FR667611A (fr) Procédé pour faire des écrous à âme courbée