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2. Pickling (metal) - Wikipedia

   en.wikipedia.org/wiki/Pickling_(metal)

   A diluted sulfuric acid pickling bath is traditionally used, [6] but may be replaced with citric acid. Sheet steel that undergoes acid pickling will oxidize (rust) when exposed to atmospheric conditions of moderately high humidity. For this reason, a thin film of oil or similar waterproof coating is applied to create a barrier to moisture in ...

3. Passivation (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Passivation_(chemistry)

   In physical chemistry and engineering, passivation is coating a material so that it becomes "passive", that is, less readily affected or corroded by the environment. . Passivation involves creation of an outer layer of shield material that is applied as a microcoating, created by chemical reaction with the base material, or allowed to build by spontaneous oxidation

4. Parts cleaning - Wikipedia

   en.wikipedia.org/wiki/Parts_cleaning

   Chemical – abrasive/reactive: pickling in liquids, plasma-assisted, sputter-cleaning, electropolishing; Chemical – non-reactive: organic solvents, aqueous solutions, supercritical CO 2; The contamination layer may then be further classified according to: Origin; Composition: e.g. cooling lubricants may be composed differently. Single ...

5. Eco pickled surface - Wikipedia

   en.wikipedia.org/wiki/Eco_Pickled_Surface

   Eco pickled surface (EPS) is a process applied to hot rolled sheet steel to remove all surface oxides and clean the steel surface.Steel which has undergone the EPS process acquires a high degree of resistance to subsequent development of surface oxide (rust), so long as it does not come into direct contact with moisture.

6. Phosphate conversion coating - Wikipedia

   en.wikipedia.org/wiki/Phosphate_conversion_coating

   A phosphate coating is usually obtained by applying to the steel part a dilute solution of phosphoric acid, possibly with soluble iron, zinc, and/or manganese salts. The solution may be applied by sponging, spraying, or immersion. [6] Phosphate conversion coatings can also be used on aluminium, zinc, cadmium, silver and tin. [7] [8]

7. Worthington Acquires Majority Stake in Samuel Steel Pickling

   www.aol.com/news/worthington-acquires-majority...

   Worthington's (WOR) buyout of a majority stake in JV, Samuel Steel Pickling, and subsequent integration of Heidtman Steel's Cleveland facility to the venture will likely enhance growth opportunities.

8. Electropolishing - Wikipedia

   en.wikipedia.org/wiki/Electropolishing

   Stainless steel preferentially removes iron from the surface and enhances the chromium/nickel content for the most superior form of passivation for stainless steel. Electropolishing can be used on a wide range of metals including stainless steel, aluminum, copper, brass and titanium.

9. Chromate conversion coating - Wikipedia

   en.wikipedia.org/wiki/Chromate_conversion_coating

   The trapped solution keeps reacting with any metal that gets exposed in the cracks, so that the final coating is continuous and covers the entire surface. [ 2 ] Although the main reactions turn most of the chromium(VI) anions (chromates and dichromates) in the deposited gel into insoluble chromium(III) compounds, a small quantity of them ...