Polishing is the process of creating a smooth and shiny surface by rubbing it or by applying a chemical treatment, leaving a clean surface with a significant specular reflection (still limited by the index of refraction of the material according to the Fresnel equations).[1] In some materials (such as metals, glasses, black or transparent stones), polishing is also able to reduce diffuse reflection to minimal values.
When an unpolished surface is magnified thousands of times, it usually looks like a succession of mountains and valleys. By repeated abrasion, those "mountains" are worn down until they are flat or just small "hills." The process of polishing with abrasives starts with a coarse grain size and gradually proceeds to the finer ones to efficiently flatten the surface imperfections and to obtain optimal results.
The strength of polished products can be higher than their unpolished counterparts owing to the removal of stress concentrations present in the rough surface during the polishing process. These concentrations take the form of corners and other defects, which magnify the local stress beyond the inherent strength of the material.[2]
Flame polishing, a type of polishing used on glass and thermoplastics
Ultra-fine, abrasive paste polishing, polishing for soft or fragile work surfaces
Vapor polishing, a method of polishing plastics to optical clarity
Referencesedit
^, archived from the original on 2016-08-31, retrieved 2008-01-04.
^Zucuni, Camila Pauleski; Dapieve, Kiara Serafini; Rippe, Marília Pivetta; Pereira, Gabriel Kalil Rocha; Bottino, Marco Cícero; Valandro, Luiz Felipe (2019). "Influence of finishing/polishing on the fatigue strength, surface topography, and roughness of an yttrium-stabilized tetragonal zirconia polycrystals subjected to grinding". Journal of the Mechanical Behavior of Biomedical Materials. 93: 222–229. doi:10.1016/j.jmbbm.2019.02.013. PMID 30831358. S2CID 73500578.
External linksedit
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February 16, 2024
polishing, other, uses, polish, disambiguation, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, bo. For other uses see Polish disambiguation This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Polishing news newspapers books scholar JSTOR September 2014 Learn how and when to remove this template message Polishing is the process of creating a smooth and shiny surface by rubbing it or by applying a chemical treatment leaving a clean surface with a significant specular reflection still limited by the index of refraction of the material according to the Fresnel equations 1 In some materials such as metals glasses black or transparent stones polishing is also able to reduce diffuse reflection to minimal values When an unpolished surface is magnified thousands of times it usually looks like a succession of mountains and valleys By repeated abrasion those mountains are worn down until they are flat or just small hills The process of polishing with abrasives starts with a coarse grain size and gradually proceeds to the finer ones to efficiently flatten the surface imperfections and to obtain optimal results Contents 1 Mechanical properties 2 Types 2 1 Metalworking 2 2 Woodworking 2 3 Other 3 References 4 External linksMechanical properties editThe strength of polished products can be higher than their unpolished counterparts owing to the removal of stress concentrations present in the rough surface during the polishing process These concentrations take the form of corners and other defects which magnify the local stress beyond the inherent strength of the material 2 Types editMetalworking edit Main article Polishing metalworking Other polishing processes include Burnishing Mass finishing Tumble finishing Vibratory finishing SodablastingWoodworking edit French polishing Wood finishingOther edit Chemical mechanical polishing which is used in semiconductor fabrication Fabrication and testing of optical components Flame polishing a type of polishing used on glass and thermoplastics Ultra fine abrasive paste polishing polishing for soft or fragile work surfaces Vapor polishing a method of polishing plastics to optical clarityReferences edit Floor Scrubber archived from the original on 2016 08 31 retrieved 2008 01 04 Zucuni Camila Pauleski Dapieve Kiara Serafini Rippe Marilia Pivetta Pereira Gabriel Kalil Rocha Bottino Marco Cicero Valandro Luiz Felipe 2019 Influence of finishing polishing on the fatigue strength surface topography and roughness of an yttrium stabilized tetragonal zirconia polycrystals subjected to grinding Journal of the Mechanical Behavior of Biomedical Materials 93 222 229 doi 10 1016 j jmbbm 2019 02 013 PMID 30831358 S2CID 73500578 External links edit nbsp Wikimedia Commons has media related to Polishing nbsp Look up polishing in Wiktionary the free dictionary Retrieved from https en wikipedia org w index php title Polishing amp oldid 1181053530, wikipedia, wiki, book, books, library,
