RO81247B1 - Procedeu de pasivizare a pieselor din zamac - Google Patents
Procedeu de pasivizare a pieselor din zamacInfo
- Publication number
- RO81247B1 RO81247B1 RO102804A RO10280480A RO81247B1 RO 81247 B1 RO81247 B1 RO 81247B1 RO 102804 A RO102804 A RO 102804A RO 10280480 A RO10280480 A RO 10280480A RO 81247 B1 RO81247 B1 RO 81247B1
- Authority
- RO
- Romania
- Prior art keywords
- passivarion
- alliage
- procede
- pieces
- zamac
- Prior art date
Links
- 239000011701 zinc Substances 0.000 abstract 3
- 229910000842 Zamak Inorganic materials 0.000 abstract 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000002161 passivation Methods 0.000 abstract 2
- 229910052725 zinc Inorganic materials 0.000 abstract 2
- 206010070834 Sensitisation Diseases 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 239000003929 acidic solution Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000008313 sensitization Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Inventia se refera la un procedeu de pasivizare a pieselor din zamac. Pasivizarea zamacului (aliaj Zn Al 4 Cu lT) urmareste împiedicarea formarii straturilor bazice de zinc pe suprafata pieselor turnate din acest aliaj. dupa o pregatire corespunzatoare piesele sînr supuse unui tratament chimic de sensibilizare urmat de pasivizarea prin imersie într-o solutie acida, care contine 110....120 g/l K2Cr2O7, 5 ml/1 H2SO4 (1,84), 2.....4 g/l H2BO3 la temperatura de 25 degree C, timp de 5....20 s. Procedeul poate fi utilizat la protejarea anticoroziva a pieselor de zamac, componente ale unor produse care sînt destinate sa functioneze în climat industrial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO102804A RO81247B1 (ro) | 1980-12-09 | 1980-12-09 | Procedeu de pasivizare a pieselor din zamac |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO102804A RO81247B1 (ro) | 1980-12-09 | 1980-12-09 | Procedeu de pasivizare a pieselor din zamac |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO81247A2 RO81247A2 (ro) | 1983-02-15 |
| RO81247B1 true RO81247B1 (ro) | 1983-02-28 |
Family
ID=20109246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO102804A RO81247B1 (ro) | 1980-12-09 | 1980-12-09 | Procedeu de pasivizare a pieselor din zamac |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO81247B1 (ro) |
-
1980
- 1980-12-09 RO RO102804A patent/RO81247B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO81247A2 (ro) | 1983-02-15 |
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