Cyanide-free alkaline copper plating process capable of recovering waste liquid

Abstract

The invention discloses a cyanide-free alkaline copper plating process capable of recovering waste liquid. The cyanide-free alkaline copper plating process comprises the steps of preparing a plating agent, adjusting pH value, heating a plating solution and electroplating. The cyanide-free alkaline copper plating process comprises the steps that water with a volume ratio of at least 50% is added into a plating bath, preparing of is the plating agent is carried out according to the raw material composition ratio, the plating agent is added into the plating bath, water is added to dissolve and adjust the pH value of the plating solution, the plating bath is heated, the plating solution is heated, energizing and plating are carried out, and the plating solution is continuously filtered. According to the cyanide-free alkaline copper plating process capable of recovering the waste liquid, through creative improvement of the raw material ratio and the process flow, the copper plating processcan better process materials and has better copper plating effect, and is suitable for any metal substrate such as pure copper, copper alloy, iron, stainless steel, zinc alloy die castings, aluminum and aluminum alloy workpieces. At the same time, the waste liquid produced after copper plating can be collected, more energy conservation and environment prevention are achieved, the copper plating effect is better, the cost required by the copper plating process is effectively reduced, and the cyanide-free alkaline copper plating process is suitable for promotion in the market.

Description

technical field [0001] The invention relates to the technical field of cyanide-free alkali copper plating, in particular to a cyanide-free alkali copper plating process in which waste liquid can be recovered. Background technique [0002] Cyanide copper plating is the earliest and most widely used copper plating process. The plating solution is mainly composed of copper cyanide complex and a certain amount of free cyanide, which is strongly alkaline. Because cyanide has a strong activation and complexing ability, the first feature of this electroplating method is that the solution has a certain degreasing and activation ability. With the continuous progress of science and technology and copper plating process, the existing copper plating methods are also constantly improving. The cyanide-free alkali copper plating process is the embodiment of the progress of copper plating process, but the existing copper plating process, especially It is the shortcoming that the cyanide-f...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of cyanide-free alkali copper plating process of recyclable waste liquid, to solve the problem that the waste liquid produced after copper plating cannot be collected in the above-mentioned background technology; the copper plating effect is not good, and the cost is too high question