How to Prolong Diamond Blades’ Service Lifes – Select Suitable Type of Blades

Selecting suitable type of diamond blades for the materials to be processed is also very important for the blades’ service life. The user can consider this issue from below 3 aspects of the diamond blades:

• The Grit of Diamonds: The commonly used diamond grit is between 60/80# to 30/35#. The harder the material to be processed is, the smaller diamond grit should be chosen, because smaller diamonds are more easily to cut into hard materials.

  In addition, large-diameter diamond blades normally require high cutting efficiency, so big diamond grits should be used for them, for example 30/40# and 40/50; small-diameter diamond blades normally have no such high cutting efficiency requirement, but require a smooth cutting-section of the material, so small diamond grits should be selected, for example 50/60# and 60/80#.

• The Concentration of the Segment: The concentration is the percentage of the diamonds in the whole segment materials. Increasing the concentration can prolong the blades’ life, because this will reduce the average pressure on each diamond when cutting. However, the increasing in concentration will inevitably increase the blade’s cost. Therefore there is a most economical concentration for a certain cutting efficiency.

  The diamond particles are normally distributed in the segment unevenly, and are usually made into a wave-shape. This will help to improve the service life and precision of diamond blades.

• The Hardness of the Bond Materials in the Segment: In general, the higher hardness of bond materials, the stronger its abradability. As a result, when sawing the highly abrasive rocks, the user should choose a high hardness of the bond materials; when sawing rocks of soft texture, the user should choose the low hardness; when the rock to be sawed is highly abrasive and at the same time very hard, a medium hardness of the bond materials should be selected.