IT1241234B - Process for creating a coloured protective surface coating on metals - Google Patents
Process for creating a coloured protective surface coating on metalsInfo
- Publication number
- IT1241234B IT1241234B IT67362A IT6736290A IT1241234B IT 1241234 B IT1241234 B IT 1241234B IT 67362 A IT67362 A IT 67362A IT 6736290 A IT6736290 A IT 6736290A IT 1241234 B IT1241234 B IT 1241234B
- Authority
- IT
- Italy
- Prior art keywords
- protective layer
- metals
- zinc
- protected
- bath
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title abstract 5
- 239000002184 metal Substances 0.000 title abstract 5
- 150000002739 metals Chemical class 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 239000011248 coating agent Substances 0.000 title 1
- 238000000576 coating method Methods 0.000 title 1
- 230000001681 protective effect Effects 0.000 title 1
- 239000011241 protective layer Substances 0.000 abstract 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 5
- 229910052725 zinc Inorganic materials 0.000 abstract 5
- 239000011701 zinc Substances 0.000 abstract 5
- 238000007654 immersion Methods 0.000 abstract 2
- 229920000620 organic polymer Polymers 0.000 abstract 2
- 238000007747 plating Methods 0.000 abstract 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000002161 passivation Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Landscapes
- Golf Clubs (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The process is entirely performed on a rotating drum plant, of the type used for the zinc plating of small metal parts, and involves an electrolytic zinc plating stage, by which a first protective layer of zinc having a first predefined thickness is deposited onto the surface of the metals to be protected, a stage of immersion of the metals to be protected in a passivation bath capable of effecting the deposition of a second protective layer having a predefined second thickness and colour onto the first zinc layer and containing passivating inhibitors of zinc corrosion, and a stage of immersion of the metals to be protected in a finishing bath containing polysilicides and organic polymers capable of forming a third protective layer of a predefined thickness on the second coloured protective layer, and at least one chromophoric substance capable of binding to the said polysilicides and organic polymers so as combine with those deposited to form the said third protective layer and capable of imparting to the finishing bath a colour essentially identical to that of the second protective layer; the third bath is maintained at a density lying between 1.035 and 1.050 kg/l (values at 20 degree C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT67362A IT1241234B (en) | 1990-05-18 | 1990-05-18 | Process for creating a coloured protective surface coating on metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT67362A IT1241234B (en) | 1990-05-18 | 1990-05-18 | Process for creating a coloured protective surface coating on metals |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT9067362A0 IT9067362A0 (en) | 1990-05-18 |
| IT9067362A1 IT9067362A1 (en) | 1991-11-18 |
| IT1241234B true IT1241234B (en) | 1993-12-29 |
Family
ID=11301770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT67362A IT1241234B (en) | 1990-05-18 | 1990-05-18 | Process for creating a coloured protective surface coating on metals |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1241234B (en) |
-
1990
- 1990-05-18 IT IT67362A patent/IT1241234B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| IT9067362A1 (en) | 1991-11-18 |
| IT9067362A0 (en) | 1990-05-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970529 |