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.

DIFFUSE REFLECTION

A reflection process in which the reflected radiation is sent out in many directions usually bearing no simple relationship to the angle of incidence. It results from reflection from a rough surface with small irregularities.

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.

POLAR MARITIME AIR

An air mass that originates in the polar regions and is then modified by passing over a relatively warm ocean surface. It is characterized by moderately low temperature, moderately high surface specific humidity, and a considerable degree of vertical instability. When the air is colder than the sea surface, it is further characterized by gusts and squalls, showery precipitation, variable sky, and good visibility between showers.

MEAN HIGHER HIGH WATER LINE

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

PARTICLE EROSION

Occurs when fluid-entrained particles moving at high velocity pass through orifices or impinge on metering surfaces or sharp angle turns.

FIREDAMP REFORMING PROCESS

A process in which methane (firedamp) is mixed with steam and passed over a nickel catalyst for conversion to a mixture of hydrogen and carbon monoxide; this mixture is blended with pure methane, and the result is a fuel of high calorific value.

ELECTRON-BEAM GENERATOR

Velocity modulated generator, such as a klystron tube, used to generate extremely high frequencies.

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