For noble silver hollow jewellery
ARGUNA® 621 EF is a silver electrolyte, especially to produce noble hollow jewellery. A layer with high thickness can be deposited on mandrels made conductive.
The electrolyte works with wax and metal cores. It can be used within a wide current density range and is suitable for relatively high temperature ranges (40 degrees Celsius).
Its good throwing power results in a uniform layer thickness distribution. The surfaces are bright and brilliant white, without blue cast and have a fineness of 99.9 percent silver.
Electrolytes Characteristics
Electrolyte type | Alkaline-cyanide |
Metal content | 40 (35 - 45) g/l Ag |
pH value | No control required |
Operating temperature | 40 to max. 45 °C |
Current density range | 1 - 2 A/dm² |
Plating speed | approx. 0.6 μm/min at 1.0 A/dm² Approx. 1.2 μm/min at 2.0 A/dm² |
Anode material | Fine silver |
Coating Characteristics
Coating | Fine silver |
Alloy composition | 99,9% Ag |
Colour of deposit | Brilliant white |
Brightness | Bright |
Hardness | 85 - 185 HV |
Max. coating thickness | Several 100 μm |
Density of the coating | approx. 10,5 g/cm³ |
Advantages
- Bright silver electrolyte for producing hollow jewellery on wax and metal cores
- Suitable for relatively high temperature ranges (40 degrees Celsius)
- Surfaces are brilliant white
- Wide current density range
- Very good throwing power, therefore, uniform thickness distribution
Applications
- Electroforming
- Hollow jewellery