Any cleaning process in which an abrasive is directed at high velocity toward the surface being cleaned, for example, sand blasting.



Related Terms

PARTICLE IMPINGEMENT EROSION

A particulate wear process where high velocity, fluid- entrained particles are directed at target surfaces.

ATOMIZATION

The process whereby a volume of liquid is converted into a multiplicity of small drops. The principal goal is to produce a high surface area to mass ratio so that the liquid will vaporize quickly and thus be susceptible to combustion.

AXIAL FLOW COMPRESSOR

A compressor that uses rotor blades shaped like airfoils that give the air a high velocity and push it into subsequent stationary blade passages that convert the velocity energy into pressure. This process is repeated through several stages. The airflow movement is axial.

REFRACTIVE INDEX

The ratio of the velocity of light in vacuum to the velocity of light in a medium. This index is equal to the ratio of the sines of the angles of incidence and refraction when a ray crosses the surface separating vacuum and medium.

CHUTE

A conduit for conveying free-flowing materials at high velocity to lower levels.

CLADDING

Process of covering one material with another and bonding them together under high pressure and temperature. Also known as bonding.

MEAN HIGH WATER LINE

The intersection of the land with the water surface at the elevation of mean high water.

PHASE REDUCTION

Processing of observed high and low waters to obtain quantities depending upon the phase of the moon, such as the spring and neap ranges of tide. Formerly this process was known as SECOND REDUCTION. Also applicable to tidal currents.

POLAR AIR

A type of air whose characteristics are developed over high latitudes, especially Within the subpolar highs. Continental polar air has low surface temperature, low moisture content, and especially in its source regions, has great stability in the lower layers. It is shallow in comparison with arctic air. Maritime polar air initially possesses similar properties to those of continental polar air, but in passing over warmer water it becomes unstable with a higher moisture content.

EXTERNAL CENTERLESS GRINDING

A process by which a metal workpiece is finished on its external surface by supporting the piece on a blade while it is advanced between a regulating wheel and grinding wheel.

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