Low-cost cyanide-free copper-zinc-tin alloy electroplating solution and copper-zinc-tin alloy electroplating technology thereof

The invention provides a low-cost cyanide-free copper-zinc-tin alloy electroplating solution. The low-cost cyanide-free copper-zinc-tin alloy electroplating solution is characterized by comprising a copper salt, a zinc salt, a tin salt, a strong base, an EDTA complex and benzene sulfonate. The invention further discloses a technology for producing an copper-zinc-tin alloy by adopting the low-cost cyanide-free copper-zinc-tin alloy electroplating solution. The copper-zinc-tin alloy electroplating solution does not contain cyanide and other components which do serious harm to the environment and human bodies, thereby reducing the environmental pollution and belonging to an environment-friendly electroplating solution, and the cost of all the components in the copper-zinc-tin alloy electroplating solution is low. According to the low-cost cyanide-free copper-zinc-tin alloy electroplating solution and the copper-zinc-tin alloy electroplating technology thereof, the copper-zinc-tin alloy electroplating system is s