Abrasive Removal Station
As an option, an abrasive removal station can be installed before the workpiece is transferred to the subsequent production process.
At the station, the blasted parts are picked and rotated 360° to remove any abrasive stuck in pockets or recesses.The abrasive is collected and returned to the blast machine. The parts are then transported onto a chute and unloaded or delivered to the next process. Integration into fully-automatic processes is possible.
During the blast process, dust, broken abrasive and other solid particles or contaminants (fines), are generated by the rust and scale removed from the workpieces. The fines are separated in the abrasive reclamation unit which is adjustable to the different types and sizes of blast media.
The Abrasive reclamation unit consists of an impact separator and a cartridge filter. The impact separator removes the fines from the abrasive, and serves as a certified spark extinguisher and meets all ATEX regulations.
The cartridge filter provides the necessary negative pressure to remove dust. lt can be installed separately beside the shot blast machine. The filter is automatically cleansed by compressed air pulses which are adjustable in intensity and duration. All elements of the filter unit are free from ignition sources. Alternatively, wet filter units can be used for the necessary dust removal. This is often applied in aluminium die casting.
In place of the standard screw conveyor, a vibro conveyor can be used to transport abrasive from the blast cabinet to the bucket elevator. The sieve installed in the vibro conveyor separates coarse fines from the abrasive. For dust removal, the conveyor is linked to the dust filter of the central machine.
For a blast process without interruption, a vibro sieve is used to clean abrasive. The vibro sieve is used after the abrasive reclamation unit and sieves coarse particles like flashes from aluminium die casting workpieces out of the abrasive so that they do not affect the blast process.
The sieve is installed above the silo. It is driven by two vibro-motors and set in motion similar to a shaker sieve. A targeted sieving of unwanted fines is achieved with the mesh size adapted to the process. Fines are fed into a bin via a downhose. Lateral flaps allow easy access to the sieve for ease of maintenance.
The magnetic separator increases your profitability by reducing machine wear and reducing abrasive consumption. Moulding and core sand on castings is removed during the blast process. As they cause high abrasion they must be separated from the ferro-magnetic abrasive quickly and efficiently. This is performed in the magnetic separator.
Two rollers with adjustable magnetic fields and a sieving box separate the moulding and core sand and fines from the reusable abrasive, in this way only 0.2% of the weight remains. This reduces wear and abrasive consumption and leads to higher profitability for you.