Direct Electroplating of Acidic Bright Copper on Zinc and Zinc Alloys DW-035E Process
Electroplating process for zinc and zinc alloy die-casting parts.
(1) Wax removal: Ultrasonic wax removal
(2) Oil removal: oil removal fluid
wash
(3) Activation: DW-101 Zinc Alloy Activation Acid Salt
Addition amount DW-101 zinc alloy activated acid salt 30-50g/l
Activation time 10-30 seconds for better electrolytic treatment effect
wash
(4) Direct electroplating of bright acid copper on zinc alloy
Zinc alloy is a amphoteric metal, usually containing about 3% aluminum, and does not undergo zinc immersion treatment during the pre-treatment process, which requires higher requirements for cyanide free copper plating technology. The method of using DW-035E copper plating stabilizer in a plating bath that does not contain cyanide and produces a firmly adhered copper coating on zinc or zinc alloy products. And it has excellent adhesion to light. This process can provide sufficient copper deposition and corrosion resistance.
The key point in selecting the process is that it will not cause chemical reactions or replacement of zinc alloy in the plating solution, and it can also ensure the adhesion between the copper layer and the substrate, as well as between the copper layer and the intermediate coating
Copper sulfate 150-200g/l
Sulfuric acid 25-50g/l
DW-035E Copper Plating Stabilizer 15-30g/l
Current density: 0.5-2.5A/dm2
Electroplating time: 5-15 minutes
wash
(5) Electroplating in Bright Nickel Bath
wash
(6) Chromium electroplating
(7) Rinse and dry the component.
Electroplating process for zinc and zinc alloy die-casting parts.
(1) Wax removal: Ultrasonic wax removal
(2) Oil removal: oil removal fluid
wash
(3) Activation: DW-101 Zinc Alloy Activation Acid Salt
Addition amount DW-101 zinc alloy activated acid salt 30-50g/l
Activation time 10-30 seconds for better electrolytic treatment effect
wash
(4) Direct electroplating of bright acid copper on zinc alloy
Zinc alloy is a amphoteric metal, usually containing about 3% aluminum, and does not undergo zinc immersion treatment during the pre-treatment process, which requires higher requirements for cyanide free copper plating technology. The method of using DW-035E copper plating stabilizer in a plating bath that does not contain cyanide and produces a firmly adhered copper coating on zinc or zinc alloy products. And it has excellent adhesion to light. This process can provide sufficient copper deposition and corrosion resistance.
The key point in selecting the process is that it will not cause chemical reactions or replacement of zinc alloy in the plating solution, and it can also ensure the adhesion between the copper layer and the substrate, as well as between the copper layer and the intermediate coating
Copper sulfate 150-200g/l
Sulfuric acid 25-50g/l
DW-035E Copper Plating Stabilizer 15-30g/l
Current density: 0.5-2.5A/dm2
Electroplating time: 5-15 minutes
wash
(5) Electroplating in Bright Nickel Bath
wash
(6) Chromium electroplating
(7) Rinse and dry the component.
