Phosphating solution, preparation method of phosphating solution and phosphating process of metal wires

Abstract

The invention discloses a phosphating solution and a preparation method of the phosphating solution. The phosphating solution comprises 10-20 parts of phosphoric acid, 10-15 parts of zinc oxide, 10-20parts of nitric acid, 0.05-0.3 part of copper sulfate, 20-30 parts of calcium nitrate, 0.3-0.8 part of tartaric acid and 30-45 parts of water. Firstly, the zinc oxide and water are weighed and mixeduniformly into a paste; then the nitric acid is added into the paste mixture for complete reaction; excessive phosphoric acid is added for complete reaction; and finally, the copper sulfate, calcium nitrate and the tartaric acid are added and mixed uniformly, and the phosphating solution is obtained. The invention further discloses a phosphating process of metal wires. The process includes the steps of shelling, surface adjusting, electrolytic phosphating, water washing, blow-drying and wire collection. A continuous production mode is adopted, the voltage and the wire speed are controlled, andthe metal wires are subjected to phosphating. A phosphating film coating is complete in coverage, compact and firm, control over the coating thickness is convenient, the phosphating time is short, the efficiency is high, no phosphating slags occur, zero emission is achieved, the environment-friendly effect is achieved, and energy is saved.

Description

technical field [0001] The invention relates to the technical field of surface treatment of metal wires, in particular to a phosphating solution, a preparation method of the phosphating solution and a phosphating treatment process of metal wires. Background technique [0002] At present, the main technological process for the phosphating treatment of metal wires such as steel cables is: pickling—overflow washing—overflow washing—phosphating—overflow washing—saponification—drawing. There are the following points in this process: question: [0003] 1. Hydrochloric acid or sulfuric acid is highly corrosive and has a great impact on the environment; [0004] 2. The overflow water leads to a large amount of waste water discharge; [0005] 3. Too much sediment; [0006] 4. Phosphating treatment requires medium and high temperature of 70°-80°, which consumes too much energy. [0007] Therefore, it is necessary to propose an environmentally friendly and zero-emission metal wire ...

AI Technical Summary

Problems solved by technology

[0003] 1. Hydrochloric acid or sulfuric acid is highly corrosive and has a great impact on the environment;

[0004] 2. The overflow water leads to a large amount of waste water discharge;

[0005] 3. Too much sediment;

[0006] 4. Phosphating treatment requires medium and high temperature 70°-80°, which consumes too much energy