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Deburring Machinery Terms

Abrasive – Technically any material that can be used to abrade another material. In industry however, abrasives are minerals from a select group of very hard minerals used to shape, finish, polish or deburr another material.
 
Buffing – Polishing method using a soft cloth and very fine polishing compounds.
 
Burr – Undesirable protrusions and metal edges that result from machining operations.
 
Coated Abrasive – Often referred to as sandpaper. This is used on machines such as disc sanders and is often used by hand. Often a synthetic mineral is coated on the paper or fiber rather than actual sand.
 
Crystalline - The texture of groups or masses of minerals is said to be crystalline when distinct crystal faces are present.
 
Disc Grinding – Refers to grinding machines and a process using the face of a large wheel  to produce flat and parallel surfaces in high volume production.
 
Edge – The intersection of two surfaces.
 
Finish – A measurement of surface characteristics of a workpiece.
 
Friability – A characteristic of abrasive grains that describes their tendency to fracture or break apart then hit or placed under pressure.
 
Emery – A natural abrasive that contains aluminum oxide and small amounts of iron oxide. Once used extensively in the finishing industry, it is used today mostly in home workshops for deburring by hand.
 
Mass Finishing – A group of processes that use abrasives to remove burrs or apply a finish to small workpieces.
 
Media – The abrasive pellets, stones or other materials used in mass finishing and deburring. Examples are silicon carbide, ice, plastic, sand and walnut shells.
 
Polishing – A process using very fine abrasive minerals for little or no material removal. The step of finishing that often comes just after deburring when needed. Surface appearance is the primary purpose of polishing.
 
Silicon Carbide – This synthetic mineral is one of the abrasives used extensively in the finishing industry. It his harder than aluminum oxides.