Tin-zinc alloy plating device and technology with barrel plating bath
A technology for alloy electroplating and barrel plating tanks, which is applied in the direction of plating tanks, electrodes, and electrolytic processes, and can solve the problems of reduced corrosion resistance of alloy electroplating layers, imbalance of tin and zinc ion ratios, and uneven content of tin-zinc alloys, etc., to achieve Good gloss, stable content ratio, corrosion resistance and good welding performance
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Embodiment 1
[0044] After the workpiece is pretreated, the electroplating treatment is carried out under the following plating bath conditions:
[0045] pH: 6.2;
[0046] Divalent tin: 0.8g / L;
[0047] Divalent zinc: 15g / L;
[0048] Tin-zinc anode current: 120A;
[0049] Graphite anode current: 21.3A;
[0050] The temperature of the plating bath is 18°C;
[0051] The cathode current density is 0.5A / dm 2 .
Embodiment 2
[0053] After the workpiece is pretreated, the electroplating treatment is carried out under the following plating bath conditions:
[0054] pH: 6.5;
[0055] Divalent tin: 1.2g / L;
[0056] Divalent zinc: 18g / L;
[0057] Tin-zinc anode current: 135A;
[0058] Graphite anode current: 48.3A;
[0059] The temperature of the plating bath is 22°C;
[0060] The cathode current density is 0.65A / dm 2 .
Embodiment 3
[0062] After the workpiece is pretreated, the electroplating treatment is carried out under the following plating bath conditions:
[0063] pH: 7.0;
[0064] Divalent tin: 1.5g / L;
[0065] Divalent zinc: 22g / L;
[0066] Tin-zinc anode current: 160A;
[0067] Graphite anode current: 66A;
[0068] The temperature of the plating bath is 24°C;
[0069] The cathode current density is 0.8A / dm 2 .
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