The diamond saw blade for asphalt with under cut segment

Undercutting happens when a blade core wears faster than its diamond coating. As an abrasive material accumulates, it erodes the steel core. Found mostly on diamond blade for asphalt or green concrete cutting applications,segmented diamond blade, are left without anything to hold onto when the steel core is worn away. With this problem focused just below the blade segments, those teeth-like rim sections are in danger of breaking off.

The issue freely reveals its nature as the work progresses on an abrasive surface. The rim is exposing new diamonds, so the blade is plainly doing its job. With a shift of focus, though, the problem clarifies. Below the rim, an area below the blade segments has thinned to a knife-like edge. If the operator applies just a little more tool pressure, or a coarser concrete edge is encountered, even momentarily, the weakest segment will shear away. An expensive diamond blade, once capable of cutting through the toughest, most abrasive materials known to man, becomes a piece of industrial waste when this rim destroying event occurs. To prevent steel core erosion issues, diamond blades come equipped with undercutting protection.

Also known as the “knife-edging” effect, steel core wear typically occurs below the blade segments, so this is where the undercutting protection is affixed. Granted, some small amount of disc erosion is inevitable, but it can be lessened when this feature is included. Look for steel cored diamond blades that offer this surface protection attribute. It’ll be there either as a recessed core or as a series of fitted inserts. By the way, the recessed form is easy enough to identify; the rim edge is more pronounced while the core surface is sunken. For the insert type solution, look closer at the rim and segments to see the undercutting inserts.

We are diamond saw blades manufacturer and professional in product different type of diamond blades. Not only diamond blade for asphalt, concrete but also diamond saw blade for granite and marble.