Assortment diamond segments
Bonding Matrix
The diamond bonding process plays a crucial role in the production of compact and purpose-adapted cutting segments.
The bonding matrix holds the diamond crystals firmly in place.
The matrix consists of:
- Neutral materials
(iron, cobalt, nickel) - Hard materials up to 80%
(Tungsten carbide, hard metals) - Soft materials
(bronze, brass)
Negative Cutting Angle
Circular saw blades have cutting segments with a positive cutting angle (material chips are cut out).
In diamond saw blades, the diamond crystals in the bonding matrix create a negative cutting angle (the diamond crystals grind the material in the same way a chisel would).
Wear
The bonding mix always depends on the material being cut.
In other words, the composition of the bonding matrix substantially influences cutting performance and tool wear.
We have to distinguish between
- insufficient bond wear
- excessive bond wear
- optimum bond wear
Insufficient Bond Wear
Diamond grains are worn down to the level of the bond. This will significantly reduce productivity and decrease tool life.
Causes:
- Bond is too hard.
- Diamond grains are too coarse.
- Heavily reinforced concrete – Bond composition is not adequate.
Excessive Bond Wear
Diamonds break out. This will significantly reduce productivity and decrease tool life.
Causes:
- Bond is too soft
- Extremely abrasive material – Bond composition is not adequate.
Optimum Bond Wear
Each exposed diamond features a large trailing ”bond tail“. Sufficient protrusion ensures optimum productivity. Long tool life.