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Created page with 'File:lighterstill.jpgright|frame *[http://en.wikipedia.org/wiki/19th_century 1849] ==Definitions== *1: tending to abrade :a. to rub or wear away e...'
[[File:lighterstill.jpg]][[File:Grinding-pipe.jpg|right|frame]]
*[http://en.wikipedia.org/wiki/19th_century 1849]
==Definitions==
*1: tending to abrade
:a. to rub or wear away especially by [[friction]] : erode
:b. to [[irritate]] or roughen by rubbing
:c. to wear down in [[spirit]] : irritate, [[weary]]
*2: causing irritation <abrasive [[manners]]>
==Description==
An '''abrasive''' is a [[material]], often a [[mineral]], that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, [[reflective]] [[surface]] it can also involve roughening as in satin, matte or beaded finishes.
Abrasives are extremely commonplace and are used very extensively in a wide variety of industrial, domestic, and [[technological]] applications. This gives rise to a large variation in the [[physical]] and [[chemical]] [[composition]] of abrasives as well as the [[shape]] of the abrasive. Common uses for abrasives include grinding, polishing, buffing, honing, cutting, drilling, sharpening, lapping, and sanding (see [http://en.wikipedia.org/wiki/Abrasive_machining abrasive machining]). [http://en.wikipedia.org/wiki/File_(tool) Files] act by abrasion but are not classed as abrasives as they are a shaped bar of metal. However, diamond files are a form of coated abrasive (as they are metal rods coated with diamond powder).[http://en.wikipedia.org/wiki/Abrasive]
[[Category: Physics]]
*[http://en.wikipedia.org/wiki/19th_century 1849]
==Definitions==
*1: tending to abrade
:a. to rub or wear away especially by [[friction]] : erode
:b. to [[irritate]] or roughen by rubbing
:c. to wear down in [[spirit]] : irritate, [[weary]]
*2: causing irritation <abrasive [[manners]]>
==Description==
An '''abrasive''' is a [[material]], often a [[mineral]], that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, [[reflective]] [[surface]] it can also involve roughening as in satin, matte or beaded finishes.
Abrasives are extremely commonplace and are used very extensively in a wide variety of industrial, domestic, and [[technological]] applications. This gives rise to a large variation in the [[physical]] and [[chemical]] [[composition]] of abrasives as well as the [[shape]] of the abrasive. Common uses for abrasives include grinding, polishing, buffing, honing, cutting, drilling, sharpening, lapping, and sanding (see [http://en.wikipedia.org/wiki/Abrasive_machining abrasive machining]). [http://en.wikipedia.org/wiki/File_(tool) Files] act by abrasion but are not classed as abrasives as they are a shaped bar of metal. However, diamond files are a form of coated abrasive (as they are metal rods coated with diamond powder).[http://en.wikipedia.org/wiki/Abrasive]
[[Category: Physics]]