出典:Wikipedia
出典:『Wikipedia』 (2011/07/05 23:39 UTC 版)
Abrasive blasting is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface, or remove surface contaminants. A pressurized fluid, typically air, or a centrifugal wheel is used to propel the media. The first abrasive blasting process was patented by Benjamin Chew Tilghman on October 18, 1870.