Process maintenance:
Replenish nickel plating additives in time according to kiloampere hours every day; check whether the filter pump is working properly; scrub the cathode conductive rod with clean wet rag every 2-3 hours; regularly analyze and adjust the content of nickel plating additives through the Hall cell test every week; clean the anode conductive rod every week, and connect the two ends of the tank. First, the anode nickel angle in the titanium basket should be replenished in time, and the anode nickel angle should be electrolyzed for 6-8 hours with low current; the anode titanium basket bag should be inspected every month and replaced in time; the bottom of the anode titanium basket should be inspected if there is any anode mud accumulation; the filter element of the filter pump should be replaced every two weeks. The process of replenish drugs is no more detailed.
Electroplating:
Divided into electroplating hard gold and water gold process, bath composition is basically the same, hard gold bath with some trace metal nickel, cobalt, iron and other elements. 1. Purpose and Function: Gold is a precious metal, with weldability, oxidation resistance, corrosion resistance, contact resistance is small, alloy wear resistance and so on. 2. currently, the gold plating bath for PCB is mainly gold citric bath, which is simple to maintain and easy to operate. 3. the content of water gold and gold is controlled at about 1 grams / liter, the pH value is about 4.5, and the temperature is about 35 degrees. 4. The main additives include acid-type adjustment salt, basic adjustment salt, conductive salt, supplementary additives for gold plating and gold salt. 5. Pure water washing is used as recovery water washing after gold plate plating, and it can also be used to supplement the liquid level of gold cylinder evaporation. 6. gold cylinder should be plated with platinum titanium net as anode. 7. the organic pollution of gold cylinder applies continuous carbon core filtration, and the right amount of gold plating additive is added.
