Blasting in its simplest form involves a blast gun held by an operator who inserts his arms through armports in the front of the cabinet with work admitted through the same armports or through side work loading doors. Worktables are provided on the interior of the cabinets.
Manual units are used for extremely simple, low production work. Pressure Blast has enormously extended the state of the blast finishing art through the development of seemingly endless variety of automated units custom designed to individual specifications.
Instead of equipment requiring the operator to hold the workpiece in one hand and manipulate a blast gun in the other, a variety of work handling devices have been designed. Special fixtures, either stationary or rotating, hold workpieces for exposure to blasting. Fixtures may be manually loaded and unloaded or interfaced with other production processes.
Automated wet blast units are offered with cold or hot water rinsing systems, recirculating or nonrecirculating, air blowoffs and drying ovens.Dry blast units are fitted with blowoffs or vacuum cleaning capabilities. Single guns or multi-gun clusters may be fixed into position, caused to rotate or stroke in any plane. In short, Pressure Blast-developed techniques for automation have lifted dry blasting out of the foundry and wet blasting out of the tool room and created two extremely versatile production finishing methods.
Choice of Blast Systems
Wet and dry Pressure Blast units are available with two types of operation. Suction/siphon or Pressure/pump.
Involves the delivery of wet abrasive slurry or dry abrasive into the blast gun at relatively low velocity.