Wheelabrator Group engineers introduced a number of simple devices to existing machinery in order to safeguard against the dust contamination threat.
These included a solenoid timed door interlock that ensures sufficient time is given for dust to be evacuated from the cabinet before operators can open the cabinet door. A dust collector / foot pedal interlock was also installed which prohibits the use of the machinery unless the dust collector is switched on.
Automatic filter pulsing and Highly Efficient Particular Air (HEPA) filters were also installed, to give continuous cleaning of cartridge filters and reduce dust emissions from the exhaust vents to very low levels. A door / blow off gun interlock was also installed to inhibit the use of the air blow off guns while the cabinet door is open.
Mitchell comments: “By introducing new technologies, as well as upgrading and modifying their existing machinery we were able to resolve the contamination problem and increase the effectiveness of the existing machinery at the same time. This, coupled with the introduction of cleaner, leaner operational processes, has resulted in an increase in efficiency, with noticeable gains in both productivity and output quality.”
Wheelabrator Group engineers were also able to add value by installing an in-line sieve to the machine. Each time the media is blasted onto the components a portion of it breaks up, which can result in differences in component surface roughness between blasts.