Zinc

ZINC PRO ZN/NI 300 PROCESS

PROCESS DESCRIPTION

ZINC PRO ZN/NI 300 PROCESS zinc-nickel alkaline system is, ammonia-free and cyanide-free process specifically designed for rack plating. This low metal alloy bath produces a deposit with superior corrosion protection properties. Our unique alkaline process produces a nickel alloy of 10-15 % with excellent throwing power and uniform alloy deposition across a wide range of current densities. In addition, ZINC PRO ZN/NI 300 PROCESS offers the unique advantage of accepting trivalent clear and superior black (non-silver) trivalent chromate coatings.

To optimize the ZN NI 300 Process, the user must have access to X-ray fluorescence to check thickness and percent of nickel in the plated deposit. AA (Atomic Absorption) is required to determine the amount of nickel in the solution.

FEATURES AND BENEFITS
  • Zinc nickel alloy deposit containing 10-15 % nickel remains constant across a wide range of current densities.
  • Provides superior corrosion protection (0ver 2000 hours neutral salt spray to red rust with correct thickness and post treatment)
  • Various topcoats can be applied for better corrosion protection and/or torque tension
  • Accepts trivalent clear and superior black (non-silver) chromate coatings.
  • Conforms to many automobile manufacturing specifications, including heat aging requirement.

WARRANTY AND DISCLAIMER: This information is based on our experience and is, to the best of our knowledge, true and accurate. MAR-Tech Holdings Inc. gives no warranty, expressed or implied and the products are sold upon condition that the purchasers will make their own tests to determine the quality and suitability of the product. Any information or suggestions are given without warranty of any kind and the purchasers are solely responsible any loss arising from the use of such information.

Plating Solution Make-up

100 litre make-up

Sodium Hydroxide 50% 17 litres
ZnO 0.75 Kg
Zn/NI 300 Ni 0.8 litres
Zn/Ni 300 Complexor 4.0 litres
Zn/Ni 300 Chelator 7.5 litres
Zn/Ni 300 Brightener 0.5 litres
Plating Solution Composition
RANGE OPTIMUM
Zinc Metal 5.5 - 7.0 g/l 6.0 g/l
Ni Metal*
*Ni Should be set to get 12 – 14% Ni content in the Zn/Ni alloy.		 0.8 – 1.8 g/l 1.0 g/l
NaOH (Sodium Hydroxide) 120 – 140 g/l 130 g/l
Na2CO3 (Sodium Carbonate) <50 g/l 10 g/l
Zn/Ni 300 Complexor 35 – 50 ml/litre 40 ml/litres
Zn/Ni 300 Chelator 40 – 75 ml/ litres 60 ml/litres
Zn/Ni 300 Brightener 0.5 – 2.0 ml/litres 1.0 ml/litres
TEMPERATURE 33 – 37 °C 35 °C
FILTRATION FLOW RATES Continuous through 5-10 micron filter. (1-2 bath turnovers per hour)
AGITATION/ CIRCULATION Solution movement via a flow educator system is highly recommended 2-3 bath turnovers per hour
CATHODE CURRENT DENSITY Barrel 0.1-1 A/dm2 (1 – 10 asf)
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