| |
|
PLATINISED TITANIUM ANODE FOR PLATING BATHES
|
.jpg)
The Platinised Titanium and Niobium anodes are used as insoluble anodes in modern electroplating bathes for hard chromium plating of rotogravure cylinders and piston rings etc. Chromic acid solutions, which are containing sulphuric acid, are used as electrolyte.
For hard chromium plating of rotogravure cylinders or piston rings, or semicircular, anodes respectively bent conforming anodes, which adapt very good to the cylinder shape, are used. In principle there are different types of anodes are used with one or two bows.
The platinum layer is produced of molten platinum salt by means of THE procedure up to 10 mm thick, will perform…
1.Dense crystalline layer structure and thereby good mechanical properties.
2. Even metal distribution of the platinum layer and optimal adhesion of the ti mesh.
3. Long lasting (approx 8 g platinum per 1 million Ah are removed per bath) and dimensionally stable.
4. The base material is reusable after re-plating.
5. No maintenance of anodes necessary.
6. Constant conductivity of the anodes.
7. Very short distance from the electrode to the cylinder (4-6 cm.). Due to the constant anode mesh and the circulating of electrolyte through the meshes cause an even current distribution and enable the use of a higher current density (thereby the chrome plating is essentially faster and a very even chrome layer deposited).
|
|
|
