Extraction when cutting aluminium
PROBLEMS OF THE EXTRACTION PROCESS IN ALUMINIUM CUTTING
When aluminium is cut with saw blades, a large amount of aluminium sawdust is produced. With powerful automatic cutting machines, the volume of aluminium sawdust is so large that it is not possible to remove the sawdust from the machine manually for efficient production and the removal is handled by extraction systems. The extraction system ensures a constant draft in the extraction line so that the aluminium filings do not settle inside the machine and in the extraction line. The filtration system is equipped with a large separation chamber which acts as an intermediate storage of the extracted sawdust.
The extraction system is designed to be resistant to the effects of the extracted cooling emulsion. It is recommended that the outlet of the filtered air be routed outside the production hall, but if a secondary filtration stage is used, the filtered air can be returned to the hall. The exhaust ductwork must be smooth, flanged so that sawdust is not caught on the sharp points of rivets or self-tapping screws.