Slow cutting speed is one of the most unfavorable features of a diamond blade. The causes usually occur when a blade is used to cut a material that is too hard for the segment. The hard material wears the exposed diamonds, but no the metal portion of the segment. The segment wears too slowly and no new diamonds are exposed, and therefore, slow cutting speed develops. Solutions include cutting the blade into a soft abrasive material like asphalt, block sandstone or dried mortar to expose the diamonds. If the this problem is allowed to continue, heat builds up and the blade begins to bounce leading to segment loss, core cracks and a very unsafe condition. At this point, a different diamond blade needs to be considered.
Other unfavorable conditions for diamond blades include short blade life. This problem usually occurs when a blade is used to cut a material that is too soft and abrasive for the segment. The abrasive material wears the metal of the segment too fast, and shorter blade life occurs. To rectify the problem, choose a more aggregate appropriate blade with a more wear resistant bond. Also check water flow and make sure the blade is rated for the equipment being used. Make sure the saw is in good condition. If these problems are not addressed, the full life and efficiency of the blade will not develop.
Customers must decide which is more important either cutting speed or blade life. Fast cutting speed will get the job done quicker and allow the contractor to move on the next project. Blade life will allow the contractor to get more out of his investment in the blade but may slow the project down. U.S. based diamond companies can make adjustments to the segments for the customer and get the project up and running quickly. By varying the size and quality of the diamonds and types of powders, the adjustments can make significant changes.
