Cold Saw Sharpening
Precision sharpening for HSS and cermet cold saw blades used in metal fabrication.
The Material Science of Cold Sawing
Cold sawing uses circular blades at low rotational speeds with high torque to cut metal without generating excessive heat. Unlike abrasive cutting, which can alter metallurgical properties, cold sawing produces minimal heat—preserving the structural integrity of the cut edge.
Blade Materials
High-Speed Steel (HSS)
Standard for general metal cutting. Tough and forgiving. Can be resharpened multiple times.
Cermet
Ceramic-metal composite. Higher cutting speeds possible. Exceptional wear resistance for production environments.
Critical Geometry Parameters
Cold saw sharpening requires maintaining exact tooth geometry. Even slight deviations cause vibration, poor finish, and premature failure:
| Parameter | Function |
|---|---|
| Rake Angle | Controls chip formation and cutting force |
| Clearance Angle | Prevents rubbing and heat buildup |
| Chip Breaker | Controls chip size for evacuation |
| Tooth Height | Differential height for chip formation |
Our Sharpening Process
- Inspection: Measure current geometry and identify wear patterns
- Cleaning: Remove chips, coolant residue, and built-up material
- CNC Grinding: Multi-axis machines with flood coolant restore exact angles
- Chip Breaker Grinding: Restore chip control geometry
- Quality Check: Verify all angles and surface finish
Applications
- Ferrous Metals: Mild steel, stainless, tool steel cutting
- Non-Ferrous: Aluminum, brass, copper, bronze
- Tubing and Pipe: Clean, burr-free cuts
- Solid Stock: Bar and rod cutting
- Structural: Angle iron, channel, I-beam
Maximizing Blade Life
- Use proper cutting fluid at correct concentration
- Maintain recommended cutting speed (SFPM)
- Don't force feed—let the blade cut at its rate
- Ensure workpiece is securely clamped
- Sharpen at first signs of dulling, not after failure