Five coloring methods for anti-corrosion steel pipes

Anti-corrosion steel pipe surface mirror bright treatment method: According to the complexity of anti-corrosion steel pipe products and different user requirements, mechanical polishing, chemical polishing, electrochemical polishing and other methods can be used to achieve mirror gloss. The coloring methods of anti-corrosion steel pipes are as follows:

1: Chemical oxidation coloring method; it is the color of the film formed by chemical oxidation in a specific solution, including dichromate method, mixed sodium salt method, vulcanization method, acid oxidation method and alkaline oxidation method. .

2: Electrochemical oxidation coloring method; it is the color of the film formed by electrochemical oxidation in a specific solution.

3: Ion deposition oxide coloring method; that is, the stainless steel workpiece is placed in a vacuum coating machine for vacuum evaporation coating. For example: titanium-plated watch cases and watch straps are generally golden yellow. This method is suitable for high-volume product processing. Because of the large investment and high cost, small batch products are not cost-effective.

4: High-temperature oxidation coloring method; the workpiece is immersed in a specific molten salt and kept at certain process parameters, so that the workpiece forms an oxide film with a certain thickness, and presents various colors.

5: Gas-phase cracking coloring method. It is more complex and less used in industry.