What Is A Diamond Blade?

Diamond blades consist of four components:

Diamond crystals

  1. Diamond grit used in blades are manufactured in various grit sizes and quality grades.

  2. Bonding matrix

    A metal bonding matrix holds diamond crystals in place. Metal powders such as Cobalt, Iron, Nickel, Tungsten, Bronze and other metals are used in various combinations. The bonding matrix plays several vital roles:

    • Disperses and support the diamonds
    • Provides controlled wear while allowing diamond protrusion
    • Prevents diamond pull-out
    • Acts as a heat sink
    • Distributes impact and load as the diamond crystals grind the cutting surface

    In the cutting process, the diamonds in the metal bond grind the material. This grinding process cuts the material and at the same time the material wears the metal bond, which exposes diamonds to the surface, refreshing the blade and extending its useful life.

  3. Segments

    The mixture of diamond crystals and bonding metal powders is hot pressed into segments. These segments are wider than the core to provide clearance during cutting.

    These segments are specifically designed to wear at a rate appropriate to the aggregate being out. Diamond concentration in the segment can vary from low to very high, depending on specific cost and application requirements.

  4. Steel core

    The segments are attached to a premium steel alloy core.

    The steel core is precision-made steel disc that has slots. The slots (also called "gullets") provide faster cooling by allowing water or air to flow between the segments.

    Most blade cores are tensioned at the factory so the blade will run straight at cutting speeds. Proper tension allows the blade to remain flexible enough to bend slightly under cutting pressure and snap back into position. An arbor hole is precisely bored into the centre.