How to color stainless steel tube

- Feb 26, 2020-


There are many different colors on the stainless steel tube. but How to color stainless steel tube? here are some methods for your reference.

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Stainless steel tube has the following five coloring methods:

(1) Electrochemical coloring method

It is the color of a film formed by electrochemical oxidation in a specific solution.

(2) high temperature oxidation coloring method

In a specific molten salt, the immersed stainless steel profiled tube is maintained at a certain process parameter, so that the workpiece forms an oxide film with a certain thickness and exhibits various colors.

(3) chemical oxidation coloring method

In a specific solution, the color of the film formed by chemical oxidation includes a dichromate method, a mixed sodium salt method, a sulfurization method, an acid oxidation method, and an alkaline oxidation method. Generally, the "Ink method" is used more, but if you want to ensure the uniform color of a batch of products, you must use a reference electrode to control it.

D) gas phase cracking coloring method

The coloring method of this stainless steel special-shaped pipe is more complicated, and it is rarely used in industry.

(5) Chemical method of ion deposition oxide coloring

That is, the stainless steel special-shaped tube is placed in a vacuum coating machine for vacuum evaporation plating. 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.

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