90# Environmentally friendly bright brass tin process
1. The brightness and flatness are high. After the copper alloy substrate is directly coated with the coating, gold plating can obviously prolong the wear resistance time of the gold coating and is very economical.
2. The coating has good anti-corrosion and anti-discoloration ability.
3, this process can obtain a thicker bright coating.
4, can replace bright alkali copper, as a substitute for nickel bottom coating, so that the coating is brighter, better anti-corrosion ability.
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Solution composition and operating conditions
Process parameters and operating conditions Scope best value Copper Metal 18-22g/l 20g l Metallic Tin 8-12g/l 10g l Environmental protection sodium salt 190-210g/l 200g/l Zinc metal (optional) 0.8-1.2g/l 1.0g l Potassium hydroxide 8-12g/l 10g/l 90Mu cylinder opening agent 50.0-70.0 ml/l 60.0 ml/L 90B Brightener 0.8-1.5 ml/l 1.0 ml/open 90w wetting agent 1.0-2.0 ml/l 1.5 ml liter Temperature 50-60 ℃ 54°C cathode current density 0.5-2.0 Amps/square decimeter 10 amps/square decimeter anode current density 0.5-1.0 Amps/square decimeter 0.5 amps/square decimeter anode 316 stainless steel plate Stirring Pole movement or rolling rotation
90# Environmentally friendly bright brass tin process
1. The brightness and flatness are high. After the copper alloy substrate is directly coated with the coating, gold plating can obviously prolong the wear resistance time of the gold coating and is very economical.
2. The coating has good anti-corrosion and anti-discoloration ability.
3, this process can obtain a thicker bright coating.
4, can replace bright alkali copper, as a substitute for nickel bottom coating, so that the coating is brighter, better anti-corrosion ability.
Still deciding? Get samples first, Contact US !
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Guangdong Dazhi Chemical Technology Co., Ltd
Email: sales@dazhichem.com
Phone/WeChat: 86-18520125168
Address: No.1 Tianyuan East Road, Yonghe Economic Zone, Huangpu District, Guangzhou City
