Bạc Arguna 621 EF Nguyên Chất Cho Nữ Trang Rỗng

    Thương hiệu: UMICORE
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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
    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 wt. % 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







    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.

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    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.