What are the differences between sintered and regular diamond blades?

Sintered diamond blades and regular diamond blades (which typically refer to electroplated or vacuum brazed blades) have distinct characteristics and applications:

1. Manufacturing Process

• Sintered Diamond Blades: These blades are manufactured by mixing diamond particles with metal powders and then pressing and sintering them under high pressure and temperature. This creates a strong bond between the diamonds and the metal matrix.
• Regular Diamond Blades: These can be either electroplated or vacuum brazed. Electroplated blades have a single layer of diamond grit bonded to the surface using a nickel plating process. Vacuum brazed blades have diamonds bonded to the edge using a vacuum furnace.

 

2. Durability and Lifespan

• Sintered Diamond Blades: They are known for their durability and long lifespan. The sintering process creates a strong bond that gradually wears away, exposing fresh diamonds and maintaining cutting efficiency.
• Regular Diamond Blades: Electroplated blades have a shorter lifespan as the diamonds are not replenished once the initial layer wears down. Vacuum brazed blades offer better durability than electroplated blades but still have a shorter lifespan compared to sintered blades.

 

3. Cutting Performance

• Sintered Diamond Blades: They maintain their sharpness longer due to the self-sharpening effect of the sintered bond. They are suitable for heavy-duty cutting of hard materials like concrete, asphalt, and stone.
• Regular Diamond Blades: Electroplated blades provide very sharp cuts but may wear out faster. Vacuum brazed blades offer good cutting performance for tough materials but may not last as long as sintered blades.

 

4. Material Compatibility

• Sintered Diamond Blades: Versatile for cutting a wide range of materials, including hard materials like granite, quartz, marble, concrete, ceramic, and porcelain.
• Regular Diamond Blades: Electroplated blades are ideal for precision cutting of softer materials like marble, limestone, and ceramics. Vacuum brazed blades are suitable for cutting metals, fiberglass, and composite materials.

 

5. Cutting Conditions

• Sintered Diamond Blades: Can be used in both wet and dry cutting conditions.
• Regular Diamond Blades: Electroplated blades typically require wet cutting conditions for optimal performance. Vacuum brazed blades can be used in both wet and dry conditions but may perform better in wet conditions for certain materials.

 

6. Cost

• Sintered Diamond Blades: Generally more expensive initially but offer better value over time due to their longer lifespan.
• Regular Diamond Blades: Electroplated blades are usually less expensive but may need to be replaced more frequently. Vacuum brazed blades are more expensive than electroplated blades but less expensive than sintered blades.

 

7. Maintenance

• Sintered Diamond Blades: Require less frequent maintenance due to their self-sharpening properties.
• Regular Diamond Blades: May need more frequent dressing or replacement, especially when cutting hard materials.
• In summary, sintered diamond blades are more durable and suitable for heavy-duty cutting of hard materials, while regular diamond blades (electroplated or vacuum brazed) are better for precision cutting of softer materials and may require more frequent maintenance.