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Edward Lowton
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Customised cabinet upgrades armature repair
13 February 2018
The repair and rewinding of electric coils in vibration equipment is a service offered by Cambridgeshire-based 1G Dynamics and involves stripping copper wiring off aluminium armatures along with any aluminium tube used for cooling the equipment. Before being rewound, the surface of the armature and cooling tube are prepared to provide a key for the final resin coating. The company has installed a Hodge Clemco blast cabinet to upgrade its services.

The cabinet allows armatures to be processed manually with a hand-held blast gun, while tubing is dealt with semi-automatically by means of four nozzles positioned around an exit hole in the chamber. Armatures are loaded into the cabinet on a track-and-turntable system that allows the operator to rotate them using glove ports, with a foot valve controlling blasting. All four surfaces of square tubing are treated automatically as it is pulled through the chamber on to a spool turned by an operator.
The chamber is 1250mm wide x 1000mm deep x 1500mm high and includes high-quality illumination, convenient viewing window and fully sealed glove ports. Double-skin construction reduces noise, and extra ventilation improves operator visibility. Boron carbide nozzles fitted to the five blast guns provide durability.
The abrasive hopper has a removable screen to trap large particles, with smaller material being passed through a cyclone to remove dust and spent abrasive. A cartridge-type dust collector with a removable blower unit has been included for quick and easy exchange of filter cartridges.