DE615665C - Process for the production of protective coatings on zinc and galvanized objects - Google Patents

Process for the production of protective coatings on zinc and galvanized objects

Info

Publication number
DE615665C
DE615665C DET42348D DET0042348D DE615665C DE 615665 C DE615665 C DE 615665C DE T42348 D DET42348 D DE T42348D DE T0042348 D DET0042348 D DE T0042348D DE 615665 C DE615665 C DE 615665C
Authority
DE
Germany
Prior art keywords
zinc
production
protective coatings
galvanized
galvanized objects
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
DET42348D
Other languages
German (de)
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
Priority to DET42348D priority Critical patent/DE615665C/en
Application granted granted Critical
Publication of DE615665C publication Critical patent/DE615665C/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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Description

Verfahren zur Herstellung von Schutzüberzügen auf Zink und verzinkten Gegenständen Das Patent 613 024 betrifft ein Verfahren zur Herstellung von Schutzüberzügen auf Zink und verzinkten Gegenständen ohne Anwendung von elektrischem Strom, bei welchem die Gegenstände in ein Bad aus Schwermetallsulfaten eingetaucht werden, dem Ammoniummolybdat zugesetzt ist, wobei der Gehalt an Schwermetallsulfat größer ist als derjenige von Ammoniummolybdat.Process for the production of protective coatings on zinc and galvanized Articles Patent 613,024 relates to a method for producing protective coatings on zinc and galvanized objects without the use of electricity in which the objects are immersed in a bath of heavy metal sulfates, the ammonium molybdate is added, the content of heavy metal sulfate being greater is than that of ammonium molybdate.

Es wurde nun gefunden, daß eine wesentliche Verbesserung des Verfahrens dann gegeben ist, wenn man der Tauchlösung Ammoniumchlorid hinzugibt. Die Folge ist, daß durch den Zusatz von Ammoniumchlorid die Niederschläge wesentlich schneller erfolgen und die Färbung ausgesprochen klar und schön wird. Ein weiterer Vorteil ist, daß man bei einem solchen Zusatz die Konzentration von Schwermetallsulfat und Ammoniummolybdat beträchtlich verringern kann.It has now been found that a substantial improvement in the process is given when ammonium chloride is added to the immersion solution. The consequence is that the addition of ammonium chloride precipitates much faster and the coloring is extremely clear and beautiful. Another advantage is that with such an addition, the concentration of heavy metal sulfate and Can reduce ammonium molybdate considerably.

Das Ammoniumchlorid verwendet man vorteilhaft in einer 2@j00 bis io/oigen Konzentration.The ammonium chloride is advantageously used in a 2% to 100% strength Concentration.

Es wurde bereits vorgeschlagen, beim Färben von - Zink mit Molybdatlösungen Ammoniumsulfat zuzusetzen. Die Erfindung unterscheidet sich aber nicht nur in der Badzusammensetzung, sondern es hat sich auch gezeigt, daß der- Zusatz von Ammoniumchlorid bei dem erfindungsgemäßen Verfahren besonders gute 'FäYbungen entstehen läßt.It has already been suggested when coloring - zinc with molybdate solutions Add ammonium sulfate. The invention differs not only in that Bath composition, but it has also been shown that the- addition of ammonium chloride in the process according to the invention, particularly good colorations can arise.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Schutzüberzügen auf Zink und verzinkten Gegenständen nach Patent 613 024, dadurch gekennzeichnet, daß man dem Bad Ammoniumchlorid .hinzugibt. z. Bad zur Durchführung des Verfahrens nach Anspruch i, gekennzeichnet durch ,einen Zusatz von Ammoniumchlorid in Höhe von 2 o/.. bis 1 0/0.PATENT CLAIMS: i. Process for the production of protective coatings on zinc and galvanized objects according to patent 613 024, characterized in that that ammonium chloride is added to the bath. z. Bath to carry out the procedure according to claim i, characterized by an addition of ammonium chloride in the amount from 2 o / .. to 1 0/0.
DET42348D 1933-03-30 1933-03-30 Process for the production of protective coatings on zinc and galvanized objects Expired DE615665C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET42348D DE615665C (en) 1933-03-30 1933-03-30 Process for the production of protective coatings on zinc and galvanized objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET42348D DE615665C (en) 1933-03-30 1933-03-30 Process for the production of protective coatings on zinc and galvanized objects

Publications (1)

Publication Number Publication Date
DE615665C true DE615665C (en) 1935-07-09

Family

ID=7561254

Family Applications (1)

Application Number Title Priority Date Filing Date
DET42348D Expired DE615665C (en) 1933-03-30 1933-03-30 Process for the production of protective coatings on zinc and galvanized objects

Country Status (1)

Country Link
DE (1) DE615665C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1633557A1 (en) * 2003-06-05 2006-03-15 Metal Coatings International Inc. Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1633557A1 (en) * 2003-06-05 2006-03-15 Metal Coatings International Inc. Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals
EP1633557A4 (en) * 2003-06-05 2010-08-25 Metal Coatings Int Inc Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals

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