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INTRODUCTION
Simple operation, both rack plating and barrel plating are applicable.
Do not contain cyanide.
A dense and uniform thin film of quaternary metal zincate can be produced on the surface of aluminum, which provides a good adhesion for direct copper plating, nickel plating, tin plating and chemical nickel deposition in the subsequent process.
SOLUTION MANTENANCE
The replenishment of cyanide-free zincate solution for aluminum can be calculated according to the specific gravity. The specific gravity unit is about 1.10 when the solution concentration is 250 ml/l, therefore, the specific gravity of the solution should be maintained between 1.08 and 1.12. 20 ml/l cyanide-free zincate solution should be added for each increase of 0.01 specific gravity unit.
1 g/l of the zinc level will be provided when 22 ml/l of the cyanide-free zincate solution is added.
DETERMINATION OF ZINC LEVELS
1. Pipette a 1 ml sample into a Erlenmeyer flask.
2. Add 80 ml of pure water.
3. Add 5 ml of 20% (v/v) triethanolamine, also 1 g of ammonium fluoride.
4. Add 10 ml pH = 10 buffer and 10 ml ethanol.
5. Add 3-4 drops of PAN indicator.
6. Titrate with 0.1M ETDA until the solution changes from red to yellow as the end point.
Zinc levels (g/l) = titratable number (0.1M EDTA) x 6.54/n (n is sample)
EQUIPMENT
Tank: PP, PVC, or high-density PE
Rack: PP, PVC, or 316 stainless steel
Air agitation: appropriate and even stirring is not required
Circulation: 3 to 4 times
Filtration: continuous filtering is required
Ventilation: required
Cooling system: required
Heat system: required
SAFETY AND ENVIRONMENTAL
A Material Safety Data Sheet (MSDS) includes product safety instructions and environmental protection instructions. Read and review the MSDS for appropriate health and safety warning before use.
WARRANTY
1. We provide guarantee for product quality under the valid law.
2. The quality of the product after reprocessing or repackaging by customer is not included in the guarantee.
3. Please feel free to contact us if you have any questions or issues about the products, we are ready to answer at any time.
COLOR & PACKAGING
This product is a yellow-green liquid with plastic barrel packaging. The packaging specification is 25 kg/pcs.
?IMPORTANT NOTICE REGARDING THIS INSTRUCTION BOOK
The product information and recommendations contained in this document are based on our experimental theory and data. Due to the particularity of the surface processing, further as the actual use of our products by others is beyond our control, NO GUARANTEE of any kind is made as to the effects of such use, and NO RESPONSIBLE for any consequences. Also, all the information in this document cannot be used as evidence of copyright infringement.