Diamond Blade Cutting Granite

In stone fabrication, diamond blades are the ultimate tool for cutting granite. But improper use can reduce efficiency and shorten blade life! Today we reveal industry-approved 10 essential tips for cutting granite with diamond blades to help you become a cutting expert.

10 Essential Tips for Cutting Granite with Diamond Blades

Tip 1: Choose the Right Blade Type

Select diamond blade concentration and bond based on granite hardness. For high-hardness granite, use blades with 30%-40% concentration and metal bonds for stable performance.

Tip 2: Equipment Inspection Matters

Always check diamond blade installation and ensure equipment RPM matches the blade’s maximum rated speed before operation.

Tip 3: Implement Proper Cooling

Maintain continuous water cooling to prevent diamond segment overheating and reduce dust emission.

Tip 4: Control Feed Rate

Keep cutting speed at 1-2 meters/minute for granite. Excessive speed causes abnormal wear, while slow speed reduces productivity.

Tip 5: Maintain Perpendicular Cutting

Use guide rails to ensure diamond blade remains perfectly perpendicular to the stone surface. Angled cutting accelerates unilateral wear.

Tip 6: Adopt Step Cutting Method

For large granite slabs, use “shallow-to-deep” step cutting (3-5cm increments) to extend blade life significantly.

Tip 7: Regular Blade Rotation

Rotate diamond blade 180° every 30 minutes to balance wear patterns, improving utilization by over 20%.

Tip 8: Clean Residue Promptly

Remove stone powder buildup with a wire brush after each cut to maintain cutting precision.

Tip 9: Proper Storage Conditions

Store unused diamond blades in dry, temperature-controlled environments to prevent metal core corrosion.

Tip 10: Monitor Cutting Sounds

Listen for high-pitched screeching – this indicates need for blade inspection or parameter adjustment.

Q&A Section

Q: What’s the typical lifespan of a diamond blade when cutting granite?

A: Quality blades can cut granite for 80-120㎡, depending on stone hardness and operation standards.

Q: What if sparks appear during cutting?

A: Stop immediately! This signals insufficient cooling or excessive blade wear – check water supply and blade condition.

Q: Can I perform dry cutting on granite?

A: While some blades allow dry cutting, water cooling is always recommended. Dry cutting drastically increases temperature, shortening blade life.

Q: How to determine when to replace blades?

A: Replace when cutting efficiency drops over 30% or blade diameter reduces by 15mm.

Q: Special considerations for different granite thicknesses?

A: For slabs over 10cm thick, use step cutting method and reduce feed rate to prevent blade overload.