Protocol: Mitigating Adhesion Wear (Galling).
Titanium's low thermal conductivity creates heat traps at the cutting edge. Solve the 'Sticky Metal' problem through grain refinement and vibration control.
Applicable For
APPLICABLE FOR: Sliding Headstock CNC (Citizen/Star) running Grade 23 ELI / Grade 5.
Tool Failure due to BUE (Built-Up Edge)
Risk Addressed
Tool Failure due to BUE (Built-Up Edge)
Galling occurs when the reactive titanium surface welds to the carbide cutter under high heat/pressure. This is exacerbated by 'Micro-Chatter' in the guide bushing. ValidTi rods utilize an h7 tolerance to eliminate chatter, keeping the cutting zone stable and cooler.
Fig 1. Mechanism of Adhesion Wear (Galling). Split screen SEM showing damaged tool with BUE vs. clean tool tip.
The Physics of Chip Breaking
| Variable | Standard Ti | ValidTi (Ultra-Fine Grain) |
|---|---|---|
| Grain Structure | Coarse / Mixed (Alpha-Beta) | Equiaxed G10+ |
| Chip Formation | Stringy / Continuous | Segmented / Breakable |
| Heat Evacuation | Poor (Heat stays in tool) | Improved (Heat leaves with chip) |