Bạc Arguna 621 EF Nguyên Chất Cho Nữ Trang Rỗng
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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.
Electrolyte characteristics
Alkaline-cyanide
40 (35 - 45) g/l Ag
No control required
40 to max. 45 °C
1 - 2 A/dm²
Approx. 0.6 μm/min at 1.0 A/dm² Approx. 1.2 μm/min at 2.0 A/dm²
Fine silver
Coating characteristics
Fine silver
99.9 wt. % Ag
Brilliant white
Bright
85 - 185 HV
Several 100 μm
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
Umicore is a global materials technology and recycling group, with about 10,000 employees and a turnover of € 10.4 billion in 2015. Umicore generates the majority of its revenues and dedicates most of its R&D efforts to clean technologies, such as emission control catalysts, materials for rechargeable batteries and recycling. Umicore’s overriding goal of sustainable value creation is based on an ambition to develop, produce and recycle materials in a way that fulfils its mission: materials for a better life.
