Guyson Corp. of USA:
INDUSTRIAL PRESSURE-BLAST CABINET
Thursday, August 28, 2008

Guyson Corporation has introduced a more
compact and economical direct pressure media delivery module available on several sizes of
industrial manual cabinets. The Model 8-EP is the largest blast cabinet to be fitted with the
novel pressure-blast system.
Pressure-blast media delivery is preferred for processing of components with a large amount
of surface area and for surface treatment operations such as descaling, etching, coating
removal and surface preparation that may require greater kinetic energy. Because the Model
8-EP's direct pressure blasting system accelerates media throughout the length of the blast
hose, it is capable of delivering media particles at much higher velocities than suction-blast
equipment operated at the same blast pressure. The blast machinery manufacturer claims
that pressure-blast usually proves to be at least four times faster than suction-blast.
Consisting of a cyclonic separator linked to an A.S.M.E.-certified pressure vessel, the
pressure-blast module is attached to the rear of the blast cabinet. The standard pressure
vessel holds approximately 0.8 cubic foot (22.6 liters) of media.The separator/media
reclaimer removes dust from the recirculated blast media and is powered by a freestanding
cartridge-type dust collector with an air extraction capacity of 500 cubic feet per minute (14
m3/min.). Flexible ducting connects the dust collector to the cyclonic separator, allowing the
collector to be positioned wherever it is most convenient.
The blast chamber of the Model 8-EP is 36 inches high at the rear of the sloped cabinet,
42 inches wide and 42 inches deep (914 H x 1066 W x 1066 mm D). Open access to the
finishing chamber is provided by side- and top-hinged doors at the front, to simplify loading of
bulky work pieces, as well as a convenient side-hinged, slam-shut door on one side. The
cabinet is optionally equipped with a rubber-flapped crane slot in the roof of the blast
enclosure, above the side, door to facilitate loading and unloading of heavy components by
an overhead hoist or crane.
Most types of dry blast media can be used in the Model 8-EP pressure-blast cabinet,
including plastic grit, glass beads and fast-cutting mineral grit, such as aluminum oxide,
giving the system great versatility for a wide range of blasting applications. When harsh
abrasive media are to be used, the cabinet is supplied with protective features that include
rubber lining of the blast chamber, a wear resistant boron carbide blast nozzle and a
sacrificial inner abrasion window mounted in a quick-change frame to prevent accidental
frosting of the safety-glass viewing window.
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