Zinc film agent for aluminum materials with good corrosion resistance

包装：

桶装

规格：

25kg/桶

.Process features:
Good corrosion resistance. The zinc film agent for aluminum materials is a zinc precipitation agent that needs to be used in conjunction with trace substances.
It can produce a dense and uniform thin zinc layer on the surface of aluminum alloy, providing good bonding force for subsequent processes such as direct copper plating, nickel plating, tin plating, chemical nickel plating, etc.
Especially suitable for electroplating aluminum alloy wheels.
.Solution composition and operating conditions
:
Raw materials and operating conditions
Standard cylinder volume
Range
Pure water
ml/liter< br/> ml/liter
Zinc coating agent for aluminum materials with good corrosion resistance
ml/liter
ml/liter
Temperature
3℃
℃< br/> Time
Seconds
Seconds




3. Solution maintenance
:
Low load application It can be directly supplemented with a zinc-precipitating agent for aluminum materials with strong corrosion resistance. For every .g/liter of sodium hydroxide added, .ml/l zinc-precipitating agent for aluminum materials with strong corrosion resistance can be added. Without addition, one liter of solution can treat 1,000 square meters of workpiece.
In high-load applications (such as aluminum alloy wheel hub electroplating), zinc sinking agent and B can be used to supplement the metal components and adjust the alkalinity respectively.
Add according to the specific gravity of the solution: (volume ratio) or (volume ratio) zinc precipitating agent B supplement and (volume ratio) supplement can be added to increase the specific gravity of one unit.
Add according to the analysis results:
Add according to the titration value: for each increase of the titration value, you can add 3.0 ml/L
Add according to the concentration of sodium hydroxide per increase.g/L Sodium hydroxide content, you can add ml/L B.
Notes:
Supplement B is a strongly alkaline solution. When adding, it needs to be added in small amounts and multiple times with stirring to avoid local overheating of the solution during work.
The working fluid contains chemicals, so be careful when handling it to avoid mixing it with acid, which may cause danger.
Do not add a large amount of additives during production, but add small amounts multiple times to mix the working solution evenly and avoid roughening the working surface.
The working temperature should be less than 3℃. If the temperature is too high, the zinc crystal will be rough and the bonding force between the substrate and the subsequent electroplating layer will be reduced.
Equipment requirements
Project requirements
Tank, or high density
Hanger, or type 3 stainless steel
Air mixing does not require moderate and uniform aeration and mixing
/> Circulation requires 3-cycles
Filtration system requires continuous circulation filtration
Exhaust ventilation is required
Cooling system is required