CNC Turning for Aluminum 7075-T6
Turning 7075 aluminum requires slightly lower speeds than 6061 but still machines very well. The higher hardness actually helps chip formation and produces cleaner breaks.
Recommended Machining Parameters
| Parameter | Value |
|---|---|
| Achievable Tolerances | ±0.02 mm (±0.0008") |
| Surface Finish | Ra 0.2-0.8 μm |
| Cutting Speed | 250-500 m/min |
| Feed Rate | 0.08-0.20 mm/rev |
| Tooling Recommendations | Carbide inserts with chip breaker geometry. PCD for mirror finish. TiAlN coated for extended life. |
Expert Machining Tips
1
Use chip-breaking inserts for heavy roughing
2
Lower speeds than 6061 but still fast
3
Rigid setup important for long parts
4
Finishing passes at high speed for best Ra
Common Parts Made
Aerospace shafts
High-strength fittings
Precision dowel pins
Threaded studs
Roller components
Machining Challenges
- Stress-induced warping on thin-wall parts
- Requires careful tool engagement to prevent chatter