Stainless steel pickling

Stainless steel pickling

Stainless steel pickling is a process used to remove oxide scales, heat tint, and other impurities from the surface of stainless steel. This process is important for improving the corrosion resistance of the stainless steel and enhancing its appearance. The most common method of pickling stainless steel involves using an acid solution.

Tank dimensions (length/width/depth): 385x140x70cm.

Stainless steel pickling process:

1. Preparation of the pickling solution:

The pickling solution is an acid mixture of nitric and hydrofluoric acids. The exact composition of the solution depends on the specific requirements and the type of stainless steel being treated.

2. Cleaning the surface:

Before pickling, the stainless steel surface should be thoroughly cleaned to remove any dirt, grease, or other contaminants. This can be done through mechanical cleaning, such as abrasive cleaning or blasting.

3. Application of the pickling solution:

The pickling solution is applied to the stainless steel surface using spraying or immersion. The solution reacts with the oxide scales and other impurities on the surface.

4. Reaction and pickling time:

The pickling solution reacts with the impurities on the stainless steel surface, dissolving them. The duration of the pickling process depends on factors such as the type of stainless steel, the thickness of the oxide scales, and the concentration of the pickling solution.

5. Rinsing:

After pickling, the stainless steel must be thoroughly rinsed with water to remove any residual acid. Proper rinsing is crucial to prevent ongoing reactions and to neutralize any remaining acid.

6. Drying:

Once rinsed, the stainless steel is typically dried to prevent water spots and to ensure a clean, finished appearance.

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