ES427426A1 - Regeneration of salt baths - Google Patents

Regeneration of salt baths

Info

Publication number
ES427426A1
ES427426A1 ES427426A ES427426A ES427426A1 ES 427426 A1 ES427426 A1 ES 427426A1 ES 427426 A ES427426 A ES 427426A ES 427426 A ES427426 A ES 427426A ES 427426 A1 ES427426 A1 ES 427426A1
Authority
ES
Spain
Prior art keywords
regeneration
principle
transforming agent
salt baths
bath
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
ES427426A
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.)
STHEPHANOIS DE RECH MECANIQUE
Original Assignee
STHEPHANOIS DE RECH MECANIQUE
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
Priority claimed from FR7322400A external-priority patent/FR2234380A1/en
Priority claimed from FR7416538A external-priority patent/FR2271308A2/en
Application filed by STHEPHANOIS DE RECH MECANIQUE filed Critical STHEPHANOIS DE RECH MECANIQUE
Publication of ES427426A1 publication Critical patent/ES427426A1/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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Water Treatment By Sorption (AREA)
  • Removal Of Specific Substances (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

A process for the regeneration of a molten salt bath containing cyanates and carbonates, in which a transforming agent from the inactive principle carbonate into the active cyanate principle is added to the bath, characterized in that said transforming agent is such that, for its Preparation, at least one substance containing at least one amide function undergoes a gaseous ammonia release treatment. (Machine-translation by Google Translate, not legally binding)
ES427426A 1973-06-20 1974-06-19 Regeneration of salt baths Expired ES427426A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7322400A FR2234380A1 (en) 1973-06-20 1973-06-20 Regenerating cyanate-carbonate molten salt baths - by adding amide pretreated to liberate ammonia
FR7416538A FR2271308A2 (en) 1974-05-14 1974-05-14 Regenerating cyanate-carbonate molten salt baths - by adding amide pretreated to liberate ammonia

Publications (1)

Publication Number Publication Date
ES427426A1 true ES427426A1 (en) 1976-09-16

Family

ID=26217778

Family Applications (1)

Application Number Title Priority Date Filing Date
ES427426A Expired ES427426A1 (en) 1973-06-20 1974-06-19 Regeneration of salt baths

Country Status (12)

Country Link
JP (1) JPS5068932A (en)
AR (1) AR204533A1 (en)
BR (1) BR7405013A (en)
CA (1) CA1037844A (en)
CH (1) CH593344A5 (en)
DD (1) DD112667A5 (en)
DE (1) DE2429679B2 (en)
ES (1) ES427426A1 (en)
GB (1) GB1433690A (en)
IT (1) IT1011999B (en)
NL (1) NL7408198A (en)
SE (1) SE411461B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237524A (en) * 1975-09-19 1977-03-23 Seitarou Iwasaki Method of stabilizing composition of carbonitriding salt bath
FR2556367B1 (en) * 1983-12-09 1986-09-19 Stephanois Rech Mec INPUT LOAD FOR THE MAINTENANCE OF MOLTEN SALT BATHTUBS FOR THE TREATMENT OF METAL PARTS
DE4030279C1 (en) * 1990-09-25 1992-06-04 Goetz Dipl.-Chem. Dr. 5400 Koblenz De Baum Regenerating molten alkali metal cyanate - by continuous addn. of urea] or polymer or condensate that generates urea, feeding additive into containers in continuous conveyor
DE4119820C1 (en) * 1991-06-15 1992-09-03 Goetz Dr. 5400 Koblenz De Baum Treatment of iron@ (alloys) on same support - comprises nitriding in molten alkali metal cyanate and quenching in hot aq. salt bath

Also Published As

Publication number Publication date
SE411461B (en) 1979-12-27
DD112667A5 (en) 1975-04-20
AR204533A1 (en) 1976-02-12
BR7405013A (en) 1976-02-17
DE2429679A1 (en) 1975-01-09
CH593344A5 (en) 1977-11-30
SE7407982L (en) 1974-12-23
DE2429679B2 (en) 1978-03-09
CA1037844A (en) 1978-09-05
NL7408198A (en) 1974-12-24
GB1433690A (en) 1976-04-28
IT1011999B (en) 1977-02-10
BR7405013D0 (en) 1975-01-07
JPS5068932A (en) 1975-06-09

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