Application Of Plastic Plating-Pearl Nickel Process in Automotive Plastic Parts

Application of plastic plating-Pearl Nickel process in Automotive plastic parts.
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With the development of automobile industry and the need of energy saving and environmental protection, reducing body quality can save fuel consumption. Because plastic is cheaper, lighter and easier to form than metal, it is widely used in automobile industry. Plastic plating plays an important role in protecting decoration in the development of lightweight, luxurious and beautiful automobile. Bumper, anti-friction strip, door handle, trademark, logo, wheel shell cover and other car interior decoration, exterior decoration parts are widely used plastic electroplating products. In recent years, due to the improvement of living standards and the growth of export business in China, the appearance of plastic electroplating products is no longer satisfied with the ordinary bright chromium plating appearance, and the requirements for the appearance of the coating are getting higher and higher. Pearl nickel, also known as sardine nickel, forged nickel, fog nickel, coating appearance is milky white, no reflection, slow reflection effect, not dazzling, feel lubricated and comfortable, favored by customers.
In the pearl nickel can also be electroplated a variety of coatings, such as: chromium, gold, silver and other coatings, the formation of sand chromium, gold and silver, its decorative effect will be more beautiful. The electroplating of pearl nickel is generally based on watt nickel with the addition of Nonionic surfactants. When the temperature rises above the "cloud point", the association of these surfactants with water molecules weakens and precipitates, and the resulting fine emulsion droplets are adsorbed on the surface of the parts. the deposition of the nickel layer is hindered, numerous overlapping circular pits are formed on the surface of the parts, and the coating is micro-uneven. Macroscopically show warm reflection, soft pearl effect coating [1]. Last year, according to Shanghai General Motors Epsilon project front and back door handle plating pearl nickel business requirements.
The electroplated pearl nickel coating has a uniform suede surface, soft luster, uniform white, not easy to produce black spots, and can meet the appearance requirements of automobile companies. In order to ensure the product quality, it is best to determine the slotted amount of pearl nickel through Hull tank test and small slot hanging test before each production, and formulate the best process conditions combined with the appearance samples provided by customers. If the conditions permit, we can shorten the production time, filter twice a day, filter out the sand agent, re-add the cylinder, the cost is not large, but the color of the product can be basically the same.