When it comes to high-efficiency concrete cutting in skyscraper demolition or industrial floor grinding, selecting the right blade isn’t just about size—it’s about understanding how material hardness, cutting depth, and cooling methods impact performance. A 400mm brazed diamond saw blade offers a sweet spot between portability and power, making it ideal for both precision work and heavy-duty applications.
Unlike older fusion-welded blades that risk cracking under thermal stress, modern brazed diamond segments use a low-melting-point alloy (typically silver-based) to bond the diamond grit to the steel core. This results in:
| Application Scenario | Recommended Blade Type | Key Performance Metric |
|---|---|---|
| High-rise demolition (concrete grade C40+) | Brazed with medium concentration (80–100 g/diamond) | Cutting speed: ~20 m/min (dry), ~15 m/min (wet) |
| Industrial floor grinding (epoxy-coated surfaces) | Brazed with fine-grit (100–120 mesh) | Surface finish: Ra ≤ 25 μm after 500 m of cutting |
Even the best blades show signs of wear before failure. Learn to recognize early indicators:
Pro tip: Use a simple water spray system during wet cutting—it can reduce blade temperature by up to 40°C compared to dry methods, extending lifespan significantly.
Look for blades labeled “high-concentration” (≥100g/diamond) and with a tungsten carbide core—these handle compressive strengths above 60 MPa reliably.
Yes—but only if the blade is specifically designed for dual-mode use. Always allow cooldown periods between modes to prevent micro-cracking.
If you're managing a large-scale project where every minute counts, choosing the right blade isn't just technical—it's strategic. Whether you’re tearing down old structures or preparing floors for new finishes, a well-informed decision today saves hours tomorrow.
Ready to boost your team’s productivity with proven tools? Download Our Free Blade Selection Checklist
