Vàng Auruna 556 EF-24 Nguyên Chất Cho Nữ Trang Rỗng

    Thương hiệu: UMICORE
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    Electrolyte for fine gold hollow jewellery

    AURUNA® 556 EF-24 is particularly suitable for electroforming. The electrolyte produces hard, semi-bright, thick gold layers. It is mainly used to produce high quality hollow jewellery with layers between 150 and 200 micrometer. Mandrels may be either made of wax or metal. The excellent hardness up to 200 HV and more than 99.9 percent fineness ensure customer satisfaction, because the hollow jewellery offers outstanding stability in use. It can be polished easily, has good surface quality and convinces with its solder properties.

    AURUNA® 556 EF-24 is also ideal when thick fine gold layers are deposited on (non-) precious metals. Creative combinations allow completely new designs.

    Electrolyte characteristics

    Electrolyte type

    Neutral

    Metal content

    12 (12 - 20) g/l Au

    pH value

    6 (5.8 - 6.2)

    Operating temperature

    45 °C

    Current density range

    0.5 A/dm²

    Plating speed

    0.23 μm/min

    Deposition rate

    85 - 90 mg/Amin

    Anode material

    Pt-Ti (type PLATINODE® Pt-Ti)

    Coating characteristics

    Coating

    Fine gold

    Purity

    99.9 wt. % Au

    Colour of deposit

    Yellow

    Brightness

    Semi-bright

    Hardness

    200 HV

    Max. coating thickness

    Several 100 μm

    Density of the coating

    Approx. 19.0 g/cm³

     

    Advantages

    • 24 ct fine gold electrolyte for electroforming
    • Suitable for wax and metal mandrels
    • Layer thicknesses between 150 and 200 micrometer
    • High hardness up to 200 HV at 99.9 percent fineness

     

    Applications

    • Electroforming
    • Hollow jewellery
    • Noble 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.