3 results about "Nickel coating" patented technology

The invention discloses an acidic electroplating zinc-nickel alloy electrolyte, a preparation method and an electroplating method thereof; the electrolyte comprises a basic electrolyte and additives; the basic electrolyte is a weakly acidic solution which comprises zinc ions with mass concentration of 27-38g/L, nickel ions with mass centralization of 23-31g/L, chloride ions with mass concentration of 150-220g/L and boric acid with mass concentration of 25-35g/L at Ph value of 4.8-5.4 and at temperature of 28-35 DEG C; and the additives comprise a brightening agent of 1-12 ml/L, a walk agent of 3-30 ml/L and a disodium ethylenediamine tetraacetate complexant of 10-50 ml/L. The acidic electroplating zinc-nickel alloy electrolyte is rational in proportion and proper in matching; the galvanizing efficient is improved by 30-40% compared with the traditional acidic galvanizing; the corrosion resistance of a zinc-nickel coating can be improved remarkably and the service life of the coating is prolonged; the coating is high in hardness, corrosion resistance, abrasive resistance, pyro-oxidation resistance, compactness and comprehensive performance; the electrolyte does not need to the post-treatment technique, so that the adopted electroplating method is saved in cost, efficient and rapid, convenient in operation and far superior to the traditional alkaline zinc-nickel electroplating.

The invention discloses conductive nano foam and a processing technology thereof. The conductive nano foam comprises a polyurethane foam layer, an inner nickel-plated layer is arranged on the surfaceof the polyurethane foam layer, a copper-plated layer is arranged on the surface of the inner nickel-plated layer, and an outer nickel-plated layer/gold-plated layer/silver-plated layer is arranged onthe surface of the copper-plated layer. The processing technology comprises the following steps: (1) foam finish machining; (2) nano nickel plating; (3) nano copper plating; (4) nano nickel/gold/silver plating; and (5) full inspecting of the appearance of the product and packaging. Compared with the prior art, the conductive foam has the advantages that the conductive foam is good in elasticity,the conductive performance of the small-size conductive foam is good, production and processing of ultrathin products are barrier-free, and the heat dissipation effect is good.