Lead free aluminium bars
It is recommended to use pure oil as a lubricant whenever possible to improve the performance of machining. The use of emulsions can negatively affect chip formation and chip breakage, as well as excessive water could increase cooling by limiting the proper heat spread necessary for chip breakage.
The use of positive cutting inserts is recommended, as well as tools designed for steel (P) or stainless steel (M) and not so much the specific ones for non-ferrous materials (N). P or M inserts are recommended for roughing and M inserts for finishing.
Recommended machining parameters
|Operation||Cutting speed vc||Feed rate f|
|Turning||150 – 600 m/min||0,15 – 0,80 mm / revolution|
|Drilling||150 – 600 m/min||0,20 – 0,80 mm / revolution|
|Milling of faces||150 – 300 m/min||0,08 – 0,45 mm / tooh|
|Milling of grooves||250 – 2.000 m/min||0,08 – 0,30 mm / tooh|