The 2 quarter round PCD is an excellent choice when removing medium/heavy coatings. The design and positioning of the PCD with an aggressive diamond segment acting as a stabilizer and depth guide scrapes the thickest of coatings aggressively and follows with a conventional grind all in one pass. These PCD's are directional specific and come in clockwise and counterclockwise orientation. •••IMPORTANT: If you run a rotary machine with counter rotating heads, be sure to get 1/2 clockwise and 1/2 counter clockwise PCDs when you order.
The weight of the machine is partially supported by the large surface area of the diamond segment - this segment limits the PCD's penetration into the concrete. The diamond segment lightly dresses and helps remove the severe marks left by the PCD grinding teeth. This configuration will yield a higher total square foot life span while providing an aggressive rate of coating and concrete removal. Use these PCD tools to remove heavy coatings, overcoats, glues, mastics, thin set and paint.
PCD (polycrystalline diamond) is the result of sophisticated high-pressure, high-temperature technology in which carefully selected synthetic diamond particles are sintered together in a cobalt matrix. PCD product usually consists of two layers. The PCD layer (usually black) is diamond particles which have been sintered together into a coherent structure using a chemo-mechanical binder and high-pressure, high-temperature conditions similar to those used in single crystal diamond synthesis. The polycrystalline diamond layer is integrally bonded by an advanced process to a super tough tungsten carbide substrate which provides strength and permits welding or brazing with other metals. The random orientation of the diamond particles produces a high uniform hardness four times stronger than carbide with remarkable wear resistance.