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  • How to Select Suitable Diamond Blades

    Source:www.stonediamondtool.com Date:2010/1/17 Read:5665


    If you can manage to select diamond blades which are suitable to your work, you will improve your work efficiency and lower your costs, so it’s worthy for you to know some methods.
    There are many factors which influence the performance of diamond blades. Here we suggest some ideas from 3 aspects:

    1. The Capabilities of Diamond Blades
    The capability of a diamond blade is mainly determined by its diamonds’ hardness, grit and concentration, and its bond’s hardness and abradability.
    A diamond blade’s capability should be suitable to the nature of the stone to be processed. In addition, different uses of diamond blades need different capabilities.
    The following table lists some suggestions considering these factors:

     

    Suggestion for Diamonds’ Hardness, Grit and Concentration

    Suggestion for the Bond

    Nature of Stone

    High Hardness and Density

    The diamonds’ hardness should be high, and its concentration can be a little bit lower (25% – 30%). This combination can guarantee the cutting efficiency.

    The bond should be softer, and then the new diamonds can be more easily exposed.

    Low Hardness

    The diamonds’ hardness can be medium, and its concentration should be a little bit higher. This combination can get good cutting efficiency, and at the same time prolong the blade’s life.

    Bonds with better abradability should be chosen to prolong the blade’s life.

    High abradability

    The high hardness, bigger grit and high concentration diamonds should be chosen.

    The bond should be harder, and of good abradability.

    Use of Diamond Blade

    Big Diameter Blades for Cutting Surfaces

    The diamonds’ hardness should be high (more than 14kg); grit should be big (36#-60#); concentration can be low. This combination can guarantee the high cutting efficiency.

    Bonds with good abradability should be chosen to prolong the blade’s life.

    Small Diameter Blades for Cutting borders

    Diamonds of medium hardness and 46#-70# grit can be chosen. This combination can not only guarantee the cutting efficiency, but also improve the cutting quality.

    Bonds for easily exposure of diamonds should be chosen to guarantee the cutting quality (smooth and without the loss of edges and corners).


    2. The Diameters and Shapes of Diamond Blades

    The diameter and shape of a diamond blade should be chosen according to the dimension of the stone to be processed and the requirements of processing quality.
    For example, the diameter of a diamond blade normally should be bigger than 3 times of the maximum thickness of the stone to be processed.
    The shape and structure form of a diamond blade should be chosen according to the requirements of processing precision. When cutting the stones whose requirement is smooth surface or which are thin and of easily border-broken, narrow slot diamond blades should be chosen. When cutting the stones whose processing requirements on surface are not high or which are fairly thick, wide slot diamond blades can be used.

    3. The Equipment Conditions of Cutting Machines

    · For the cutting machines with deviations or whose precisions are not so good, it is better to choose the diamond blades with good abradability bonds.
    · For those new and precise cutting machines, the diamond blades whose bonds are good for the easily exposure of diamonds can be chosen.
    · For the cutting machines whose line speeds are low, it is better to use the diamond blades with good abradability bonds.




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