Technical blog · 22/07/2026
Pickling and phosphating: surface preparation before painting
Paint that peels almost always originates in surface preparation, not in the paint. Before painting, it is necessary to remove oxides, scale, grease and soiling that prevent adhesion. Chemical pickling does this deep cleaning, and phosphating creates a crystalline layer that anchors the paint and adds an extra barrier against corrosion under the film.
Combined-action products simplify the process: they pickle, degrease and phosphate in one step, reducing time and water consumption. The phosphoric-acid base, with surfactants and corrosion inhibitors, prepares the surface and also protects the part in the interval between treatment and painting. Handling requires PPE and attention to the SDS, as it is an acid product.
JEFLUB's Ultra Decap F combines the three actions in a single biodegradable product, indicated as a stage prior to painting or coating. Talk to the team to define dilution, contact time and the ideal process for your type of part.
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