SU528358A1 - The method of pretreatment of metal surfaces before coating - Google Patents
The method of pretreatment of metal surfaces before coatingInfo
- Publication number
- SU528358A1 SU528358A1 SU2086599A SU2086599A SU528358A1 SU 528358 A1 SU528358 A1 SU 528358A1 SU 2086599 A SU2086599 A SU 2086599A SU 2086599 A SU2086599 A SU 2086599A SU 528358 A1 SU528358 A1 SU 528358A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- pretreatment
- metal surfaces
- before coating
- surfaces before
- current density
- Prior art date
Links
Landscapes
- Electroplating Methods And Accessories (AREA)
Description
33
Затем образны анодно обрабатывают в щелочном растворе, содержащем 90 г/л едкого натра, при температуре 80°С, плотности тока 20 А/дм и продожительности 120 с, промывают в гор чей и холодной воде, после чего образцы катодно обрабатывают в кислом растворе , содержащем 200 г/л серной кислоты и 80 г/л сол ной кислоты, при комнатной температуре , плотности тока 5 А/дм и продолжительности 30 с, далее промывают в холодной воде.Then the anodically shaped are treated in an alkaline solution containing 90 g / l sodium hydroxide at a temperature of 80 ° C, a current density of 20 A / dm and a duration of 120 s, washed in hot and cold water, after which the samples are cathodically treated in an acidic solution, containing 200 g / l of sulfuric acid and 80 g / l of hydrochloric acid, at room temperature, current density of 5 A / dm and a duration of 30 s, then washed in cold water.
После указанной анодно-катодной обра ботки образны хромируют в стандартном электролите, содержащем 250 г хромового ангидрида , 2,5 г серной кислоты и воду до литра , при катодной нлотности тока 50 А/дм-, анодной плотности тока 35 А/дм и температуре 50+ГС.After this anodic cathodic treatment, the samples are chrome plated in a standard electrolyte containing 250 g of chromic anhydride, 2.5 g of sulfuric acid and water to a liter, with a cathodic current density of 50 A / dm, an anodic current density of 35 A / dm and a temperature of 50 + HS.
Экспериментальные данные по качеству подготовки поверхности и получаемых покрытий по известному и предлагаемому способам приведены в таблице.Experimental data on the quality of surface preparation and the resulting coatings for the known and proposed methods are given in the table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2086599A SU528358A1 (en) | 1974-12-23 | 1974-12-23 | The method of pretreatment of metal surfaces before coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2086599A SU528358A1 (en) | 1974-12-23 | 1974-12-23 | The method of pretreatment of metal surfaces before coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU528358A1 true SU528358A1 (en) | 1976-09-15 |
Family
ID=20604292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2086599A SU528358A1 (en) | 1974-12-23 | 1974-12-23 | The method of pretreatment of metal surfaces before coating |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU528358A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997031138A1 (en) * | 1996-02-24 | 1997-08-28 | Glyco-Metall-Werke, Glyco B.V. & Co. Kg | Method of producing layered material for sliding bearings and an electroplating bath for carrying out this method |
-
1974
- 1974-12-23 SU SU2086599A patent/SU528358A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997031138A1 (en) * | 1996-02-24 | 1997-08-28 | Glyco-Metall-Werke, Glyco B.V. & Co. Kg | Method of producing layered material for sliding bearings and an electroplating bath for carrying out this method |
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