DE741101C - Phosphating of zinc and zinc alloys - Google Patents

Phosphating of zinc and zinc alloys

Info

Publication number
DE741101C
DE741101C DEM149369D DEM0149369D DE741101C DE 741101 C DE741101 C DE 741101C DE M149369 D DEM149369 D DE M149369D DE M0149369 D DEM0149369 D DE M0149369D DE 741101 C DE741101 C DE 741101C
Authority
DE
Germany
Prior art keywords
zinc
alloys
phosphating
baths
phosphate
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
DEM149369D
Other languages
German (de)
Inventor
Dr-Ing Hellmut Ley
Dr-Ing Gerhard Roesner
Dr-Ing Ludwig Schuster
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Priority to DEM149369D priority Critical patent/DE741101C/en
Application granted granted Critical
Publication of DE741101C publication Critical patent/DE741101C/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
    • C23C22/07—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 phosphates
    • C23C22/08—Orthophosphates

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

Phosphatierung von Zink und Zinklegierungen Bei der Phosphaterung von Zink und Zinklegierungen nach den für Eisen und Stahl ,erprobten Verfahren hat es sich Ne-,rausgestellt, daß die Bäder eine bedeutend kürzere Lebensdauer haben.. Dies _ wurde beispielsweise beobachtet bei einem speziell für Eisen ausgearbeiteten Verfahren, bei dem die zinkphosphat- und zinknitrathaltigem Rostschutzbä.der mit . einer Ergänzungslösung aufgefrischt werden, die im. wesentlichen aus Zinkphosphat und Zinknitrat besteht.Phosphating of zinc and zinc alloys During phosphating of zinc and zinc alloys according to the methods that have been tried and tested for iron and steel It turns out that the baths have a significantly shorter lifespan .. This has been observed, for example, in a work specially developed for iron Process in which the zinc phosphate and zinc nitrate containing rust protection baths with . a supplementary solution that is included in the. essentially made of zinc phosphate and zinc nitrate.

Es wurde nun gefunden, daß man in diesen Bädern auch vorteilhaft Zink bzw. seine Legierungen phosphatieren kann, ohne daß die Bäder ihre Wirkung verlieren, wenn man dafür sorgt, daß Eisen in die Bäder eingebracht wird, was am vorteilhaftesten dadurch geschieht, daß man von Zeit zu Zeit eiserne Gegenstände durch die Bäder durchsetzt. Auch bei mit Manganpho,sphat angesetzten Bädern ist ein solcher Zwischendurchsatz von eisernen Gegenständen von Vorteil.It has now been found that zinc is also advantageously used in these baths or can phosphate its alloys without the baths losing their effectiveness, if you see to it that iron is brought into the baths, which is most beneficial by passing iron objects through the baths from time to time interspersed. Such an intermediate throughput is also found in baths made up with manganese phosphate of iron objects advantageous.

Ein befriedigendes Arbeiten wurde beispielsweise in einem Bad auf Zinkbasis mit Nitrat als Beschleunigungsmittel erhalten, das 199 Zn/1, 249 P2 05/1, 25g N O311 enthält und bei dem nach Durchsatz von etwa o,8 m2 Zinkblech 0,2m2 Eisenblech durchgesetzt wurde. Insbesondere. wenn die Bäder zwischen-durch, beispielsweise nachts, ruhen, genügt es, Eisenplatten in ihnen einzuhängen. Diese sorgen für eine ungestörte Badführung.Satisfactory work was obtained, for example, in a zinc-based bath with nitrate as an accelerating agent, which contains 199 Zn / 1, 249 P2 05/1, 25g N O311 and in which, after a throughput of about 0.8 m2 of zinc sheet, 0.2m2 of iron sheet was passed through . In particular. when the baths are resting in between, for example at night, it is sufficient to hang iron plates in them. These ensure undisturbed bathroom management.

Bei der Phosp#hatierung von Zink und seinen Al-freien Legierungen ist es nicht unb:ed:imgt notwendig, Beschleuniger enthaltende Phosphatlösunigen zu verwenden, bei Al haltigen Zinklegierungen jedoch ,gelingt einte S-chichtbildung nur in sauren Phosphatlösungen, . denen. Beschleuniger, beispielsweise Nitrat, zugesetzt sind. Dies gilt insbesondere. für Feinzinklegierungen mit Aluminium, Kupfer und Magnesium.In the phosphate treatment of zinc and its Al-free alloys It is not necessary to use phosphate solutions containing accelerators to use, but with Al-containing zinc alloys, a layer formation succeeds only in acidic phosphate solutions, . those. Accelerator, for example Nitrate, are added. This is especially true. for fine zinc alloys with aluminum, Copper and magnesium.

Claims (1)

PATENTANSPRUCH: Verfahren zur Phosphatzerung von Zink und seinen Legierungen, dadurch gekennzeichnet, daß die Phas,phatierung in Phosphatlösungen durchgeführt wird, durch die von Zeit zu Zeit oder gleichzeitig Eisen durchgesetzt wird. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren keine Druckschriften in Betracht gezogen worden.PATENT CLAIM: Process for the phosphate removal of zinc and its alloys, characterized in that the phasing is carried out in phosphate solutions through which iron is enforced from time to time or at the same time. To the The subject of the application is differentiated from the state of the art in the granting procedure no pamphlets have been considered.
DEM149369D 1940-12-07 1940-12-08 Phosphating of zinc and zinc alloys Expired DE741101C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM149369D DE741101C (en) 1940-12-07 1940-12-08 Phosphating of zinc and zinc alloys

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE223963X 1940-12-07
DEM149369D DE741101C (en) 1940-12-07 1940-12-08 Phosphating of zinc and zinc alloys

Publications (1)

Publication Number Publication Date
DE741101C true DE741101C (en) 1943-11-04

Family

ID=25763692

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM149369D Expired DE741101C (en) 1940-12-07 1940-12-08 Phosphating of zinc and zinc alloys

Country Status (1)

Country Link
DE (1) DE741101C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569203A1 (en) * 1984-08-16 1986-02-21 Produits Ind Cie Fse PROCESS FOR THE TREATMENT BY CHEMICAL CONVERSION OF SUBSTRATES IN ZINC OR IN ONE OF ITS ALLOYS, CONCENTRATE AND BATH USED FOR THE IMPLEMENTATION OF THIS PROCESS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569203A1 (en) * 1984-08-16 1986-02-21 Produits Ind Cie Fse PROCESS FOR THE TREATMENT BY CHEMICAL CONVERSION OF SUBSTRATES IN ZINC OR IN ONE OF ITS ALLOYS, CONCENTRATE AND BATH USED FOR THE IMPLEMENTATION OF THIS PROCESS

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