Category: Technical Guide | Published: 2026-03-26 | By: Divine Brass Industries
Optimizing CNC machining of brass requires understanding material properties, selecting appropriate tools, and establishing correct cutting parameters.
Material Properties for Machining
- Hardness: 100-150 HB (softer than steel)
- Conductivity: High thermal conductivity dissipates heat
- Chip Formation: Produces continuous chips
- Surface Quality: Excellent as-machined finish possible
Cutting Parameters
Turning
- Speed: 200-400 SFM
- Feed: 0.005-0.015 IPR
- Depth: 0.030-0.100 inch
Milling
- Speed: 300-500 SFM
- Feed: 0.002-0.008 IPR
- Depth: Up to 0.200 inch
Tool Selection
- Carbide Tools: Best for high-volume production
- HSS Tools: Cost-effective for shorter runs
- Coated Tools: Extended tool life in production
- Geometry: Sharp edges for superior finish
Common Issues & Solutions
| Issue | Solution |
|---|---|
| Burr Formation | Use sharp tools, appropriate speeds |
| Poor Finish | Increase speed, reduce feed |
| Tool Wear | Use coated carbide tools |