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sandblast |
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sandblast, stream of sand or other abrasive particles driven by a jet of compressed air compressed air, air whose volume has been decreased by the application of pressure. Air is compressed by various devices, including the simple hand pump and the reciprocating, rotary, centrifugal, and axial-flow compressors . ..... Click the link for more information. or water or by centrifugal force against a surface to clean or abrade it. When centrifugal force is used, the abrasives are whirled in a rapidly rotating device before being directed against the surface. Powdered quartz, emery, chilled iron globules, and other hard granular substances are used as the abrasive material. The sandblast is used for cleaning castings in foundries; for preparing metal surfaces for painting, enameling, and galvanizing; and for cleaning the stonework of buildings. Frosted designs are worked on glass by placing a stencil or suitable pattern over the surface so that the blast affects only the uncovered parts. |
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? Mentioned in | ? References in periodicals archive | |
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The sheeting was in fact draped by Kiska Construction during the sandblasting that marked the latest phase of construction underway to turn the former elevated rail into a park space, one story above street level. The first was reported in February, when Robert Race, 51, was found dead at the sandblasting shop where he lived and worked. Some jobs, such as painting and sandblasting, require extra protective equipment like respirators. |
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