Environmentally-friendly acid-etching and descaling conditioning fluid used for bimetal composite wire processing

Abstract

The invention belongs to the technical field of metal surface treatment, relates to aluminium magnesium alloy material surface treatment, and in particular relates to an environmentally-friendly acid-etching and descaling conditioning fluid used for bimetal composite wire processing. According to the conditioning fluid, the technical problems of unreasonable prior art and the like can be solved. The conditioning fluid comprises the following components: 500-600ml / L of 68% HNO3 solution, 300-350ml / L of H3PO4, 10-15g / L of inorganic ammonium salt, 15-25g / L of organic amido-contained compound, 5-10g / L of surfactant and the balance of water. The conditioning fluid has the advantage of reasonable compatibility, a surface oxidation film on the surface of the aluminium magnesium alloy can be effectively removed in the acid etching and descaling process, and the aluminium magnesium alloy can be protected from excess corrosion. In comparison with the traditional technology, nitric oxide pollutant amount is reduced by above 90%, thereby greatly improving production and operation environment.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and relates to the surface treatment of aluminum-magnesium alloy materials, in particular to an environment-friendly acid etching and descaling treatment solution for bimetal composite wire processing. Background technique [0002] The electroplating method is a traditional bimetallic composite wire production process. Since an oxide film is easily formed on the surface of the aluminum-magnesium alloy wire, the quality of the copper plating layer is poor, and the bonding force is not strong. It cannot meet the needs of the wire and cable industry, and has not been able to form an industrialization. For this reason, someone invented the salt electroplating copper process, which continuously plated copper on the aluminum-magnesium alloy wire, and then obtained the copper-clad aluminum conductor with the required wire diameter through the drawing process. This process solves the prob...

AI Technical Summary

Problems solved by technology

However, the commonly used acid etching solutions in the prior art all contain high concentrations of fluoride, which will release a certain concentration of hydrogen fluoride in the operating environment, and excessive fluoride ions will be generated in the waste liquid produced

Not only will it cause environmental pollution, but it will also cause harm to operators.