Burn, Burn Out, Burning, Burnish, Burnishing, Burr

Tabel 2.1 d

DEFFECT	DESCRIPTION
Burn	A rapid, destructive, oxidizing action. Change in color appearance often indicates this condition. Usually caused by higher temperature than the parent material can withstand
Burn Out	Electrochemical machining erosion beyond the desired feature profile
burning	Damage to part by excessive heat. Evidenced by characteristic discoloration or in severe cases, by a loss or flow of material. Usual causes are excessive heat due to lack of lubrication, improper clearance, or abnormal flame pattern
Burnish	Shiny area resulting from rubbing against a hard smooth surfaces, may contain scratches of no apparent depth.
Burnishing	Mechanical smoothing of a metal surface by rubbing. Not accomplished by removal of material but sometimes by discoloration around outer edges of area. Operation burnishing is not detrimental if it covers approximately the area carrying the load, and if there is no evidence of pile-up or burning. Usual cause is normal operation of parts.
Burr	A sharp projection or rough edge Usual cause is excessive wear, peening, or machining operations.