Metal surface treatment


Degreasing as pre treatment

In order to be able to carry out a good pickling treatment, the material must first be degreased. This prevents that a layer of oil, grease or organic contamination blocks the pickling agent. By degreasing first, the pickling agent can pickle the entire stainless steel surface homogeneously (etching). If oil, grease or organic material were still present locally on the surface during the pickling, this would cause staining on the surface because the pickling agent cannot pickle the material uniformly everywhere.

An additional reason for properly degreasing the material before pickling, is that the contamination present on the surface can form a floating layer on the pickling liquid. The material will then be dragged through this floating layer during removal from the bath, as a result of which the material will again be contaminated by this floating layer.

The removal of grease, oil and organic contaminants can be done by means of an alkaline degreasing bath. If the material is only slightly contaminated as a result of assembly, it can also be degreased with a steam cleaner such as Steam Clean HPC-NF or Multicleaner.

Degreasing as final treatment

When material is too contaminated by oil and grease, problems can arise in the welding process. To prevent these problems, Vecom can also perform degreasing as a treatment.

Metal surface treatment

Pickling and Passivating

Pickling and passivation removes welding discoloration, annealing skin, foreign iron, restores corrosion resistance and brings it back to the original level of the base material.

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Ultrasonic cleaning

Quickly and effectively removes stubborn contamination down to the smallest seams. Extremely suitable for cleaning fuel and oil filters, cylinder heads and air coolers.

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Coolers, filters & heat exchangers

Vecom has various cleaning types for cleaning coolers, filters and heat exchangers. Determining the suitable process requires experience and expertise.

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Ultra Clean cleaning (Oxygen clean)

When an extremely clean surface is required, such as with pure oxygen applications in the petrochemical industry.

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For a glossy surface with optimally low Ra values. Less sensitive to dirt adhesion and maximum cleanability.

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Contact us

For more information or questions, contact one of our specialists.