Electroless nickel plating

NB - 45 r

Applicable process: high speed rolling nickel plating

Product model: "nb-45r brightener

The NLD - 56 opening cylinder agent

Wa-88a wetting agent"

Manufacturer: ternenbau

Product packaging: 10kg/ drum;25 kg/barrel

Key words: roll plating, white bright type

Features:

Electroless nickel plating is a single - use high - efficiency roller nickel plating brightener.Fast light speed, good leveling ability, bright white coating, deep plating ability, low electric white soft bright, good alignment, coating thickness and thickness uniformity, good toughness, suitable for bending or stamping molding after plating workpiece.Especially suitable for gold, silver, imitation gold and other precious metal plating layer nickel.Bath easy maintenance, single addition, simple operation, no decomposition of harmful substances.If special toughness and movement are required, add the cylinder opener as the case may be.Electroless nickel plating

The dosage of solution components and operating conditions

Nickel sulfate 50-250-300 grams/liter temperature 60 ℃

Nickel chloride 45 to 50 grams/liter PH 4.5 4.8

Boric acid 45 to 55 grams/liter slot voltage 12 to 15 volts

NB - 45 r brightener, 0.4 to 0.6 ml/l filter needs continuous filtration

Ld -56 cylinder opener 1.0-2.0 ml/l

Wa-88a wetting agent 0.5-1.0 ml/l

consumption

Nb-45r kiloampere hour 300-400 ml

Plating solution preparation

1. Pour two-thirds of the water into the substitute tank, heat to 60℃, add the required nickel sulfate and nickel chloride, and stir to completely dissolve them;Electroless nickel plating

2. Add nickel carbonate or 4% sodium hydroxide solution and adjust PH value to 5.2;                         

3. Add 1-2 ml/l hydrogen peroxide, dilute with water and stir for several hours before adding.                     

4. Add 2-3 g/l of activated carbon, stir for several hours, and leave overnight.With a filter pump, the plating solution is filtered into a clean plating bath

5, clean the filter pump, and then fill with activated carbon 0.2 g/l, or add filter powder 0.2/ l;                      

6. Add boric acid to the process range, stir to completely dissolve it, and add water to the operating water level.Add dilute sulfuric acid and adjust PH value to 3.6.                    

7. Conduct continuous electrolysis with a wavy cathode at a low current density of 0.1-0.3 amperes/square decimeter for more than 10 hours, until the low color changes from dark to light gray.                       

8. Adjust the PH value to the process range, refer to the plating liquid composition and use scale, and then add the gloss agent to the plating test.