Shot Blasting Project

详细说明

Shot Blasting

Abrasive blasting, more commonly known as sandblasting, 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 pressurised fluid,

typically compressed air, or a centrifugal wheel is used to propel the blasting material (often

called the media). The first abrasive blasting process was patented by Benjamin Chew Tilghman on

18 October 1870.[1]

There are several variants of the process, using various media; some are highly abrasive,

whereas others are milder. The most abrasive are shot blasting (with metal shot) and

sandblasting (with sand). Moderately abrasive variants include glass bead blasting (with glass

beads) and plastic media blasting (PMB) with ground-up plastic stock or walnut shells and

corncobs. Some of these substances can cause anaphylactic shock to both operators and passers by.

[2] A mild version is sodablasting (with baking soda). In addition, there are alternatives that

are barely abrasive or nonabrasive, such as ice blasting and dry-ice blasting.

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