The lower concentration of Evapo-Rust® will take longer to remove the rust, but may have less of an effect on causing the carbon migration. CRC Evapo-Rust Gel Rust Remover, 8 Fl Oz, Rust Remover for Vertical Surfaces, Eliminates Oxides from Aluminum, Cast Iron, and Steel. Second, a further dilution of the Evapo-Rust® formula may have a positive affect. Once the rust has been removed, the parts should be rinsed and dried. First, high carbon parts should not be soaked longer than necessary. There are several things that can be tried to minimize the effects of carbon migration. A quick rinsing of the metal after Evapo-Rust® has been applied may also keep the carbon from settling into the pores of the metal. With Evapo-Rust®, sometimes a wiping with a dry cloth or a more rigorous buffing can remove the dark coloring. Unlike other treatments, Evapo-Rust® will not darken products made with low carbon steel. The primary difference between Evapo-Rust® and the acid based treatments is that Evapo-Rust® will not harm or weaken the metal. Other rust removal treatments will also result in carbon migration and a darkening of the metal. Evapo-Rust®is not alone in creating the carbon migration effect. Since Evapo-Rust® is a highly effective rust remover, it stimulates the carbon migration process. It merely represents the movement of carbon from the interior of the metal to the exterior of the metal. The darkening does not have an adverse affect on the metal. This heavier layer of carbon could cause a darkening of the metal due to the attributes of the carbon. The removal of the rust (iron oxide) reduces the proportion of iron to carbon, leaving a higher concentration of carbon on the outer surface. The carbon from the steel moves, or “migrates”, to the outer layer of the metal and settles into the pores. This is a natural phenomenon that chemists refer to as “carbon migration”. In certain instances, steel will darken in color after rust has been removed from the surface of the metal. Steel is composed of a combination of carbon and iron. Effective with a wide variety of metals and applications.ĮVAPO-RUST™ is appropriate for use on a wide variety of metals, including steel, brass, copper, aluminum, gold, lead, titanium, steel, and cast iron, making it a useful tool in the automotive service and metal fabrication industries.The black film is carbon from the steel. EVAPO-RUST™ rust removing solution can be used several times before it’s spent and, in most cases, can be safely disposed of down the drain. Rust is easily removed in as little as 5 minutes without any sanding or scrubbing necessary. Simply soak the corroded part in EVAPO-RUST™, rinse, and dry. Safe and Easy to UseĮVAPO-RUST™ removes rust quickly and safely requiring no gloves, masks, or protective eye wear in the process. Winner of an R&D 100 award for Cleaning Technology and listed among the Top 100 Inventions for Outstanding Technology in Industrial Cleaning, EVAPO-RUST™ has been lauded as a highly effective non-toxic, non-corrosive, and non-flammable solution to ferrous oxide (red rust). Free of dangerous VOCs, solvents, acids, and bases, EVAPO-RUST™ is a people-safe, eco-friendly rust solution for a wide variety of metals. Biosolutions EVAPO-RUST™ is an award-winning rust remover that easily powers through heavy corrosion revealing metal that looks brand-new again.
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