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This process improves the surface to prepare it for Electropolishing or functional purpose.

Mechanical polishing uses belts and wheels with various abrasives to remove layers of material from the stainless steel and metal parts. This process is labour intensive and is operator controlled.

Degreasing is the operation that allows the removal of oily, greasy and foreign products from the surface of the stainless steel.

Very often these impurities are caused by debris or pastes coming respectively from a mechanical process of brushing or polishing or from sticky resins of protective films.

Rouge is a corrosion product on Stainless steel composed of: – Predominantly various forms of iron oxides Typical in water systems and processing equipment Some wipe off easily, others are tenacious and can be reddish brown to black.

Passivation is a widely-used metal finishing process to prevent corrosion. In stainless steel, the passivation process uses nitric acid or citric acid to remove free iron from the surface.

This is achieved by the formation and continuation of a viable Passive Layer.

The chemical treatment leads to a protective oxide layer that is less likely to chemically react with air and cause corrosion.

Electropolishing stainless steel is a “reverse plating” process that uses an electrochemical solution to remove the outer skin of a metal part. By stripping away a uniform layer of surface material, the electropolishing process also removes embedded contaminants, and oxide scale, burrs, and other surface imperfections that can compromise the performance and longevity of a part.

Electropolishing stainless steel significantly, especially 300 and 400 series stainless steel, improves a part’s corrosion resistance, leaving it with a lasting bright finish. Electropolishing can be performed on all varieties of stainless steel, and gives stainless steel parts of all kinds corrosion resistance superior to passivation alone. The process of dissolving a uniform layer of surface metal is more aggressive and more effective, and because it is highly controlled, it can be used to remove as little as .0002″ of surface material.

Pre-commission cleaning is achieved through a process of flushing and chemical cleaning (where required) followed by the addition of biocides and inhibitors. Systems designed and cleaned in accordance with BSRIA’s guidance are far less likely to experience operating problems.

With over 30 years’ experience in surface treatment Our experienced passivation teams are fully resourced with state of the art equipment and instrumentation to execute projects in accordance with clients requirements.