Blast cleaning may be defined as a mechanical pre-treatment process in which a suitable stream of solid particles is propelled with sufficient velocity against a work surface to cause a cleaning or abrading action when it comes in contact with the workpiece.
Blast cleaning may be employed for a variety of purposes. It is a well-established method for removing sand from castings and burrs or scale from forgings, mill products, or heat treated parts; to promote machinability; and to minimize the possibility of interference in actual operation. In addition to this use, blast cleaning also produces a suitable surface for downstream industrial coatings. All these objectives are often accomplished in the one operation.
As a general understanding, this document pertains to blast cleaning only. Any reference to shot peening or other processes is only to explain a context or concept related to blast cleaning. Processes prior to and/or after blast cleaning are entirely possible, but they do not take primary context in this document.
This revision considers necessary changes in language to address all the developments in bast cleaning process and equipment over the years since the last review. This includes, but is not limited to, blast cabinet, reclaim system, work handling, media propulsion, ventilation, and machine controls. Different media types, media maintenance in the machine, and testing are also clarified in this revision.
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Also known as: SAE J 792
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