diamond compact (PDC), is the 1970s developed into a kind of super-hard tool materials. Knives made from it is used to cut all kinds of non-ferrous metals and non-metals, and can be used to cut the wheel. When cutting it with a wheel, it has the following characteristics:
(1) has a high hardness and wear resistance: Hardness polycrystalline diamond layer is usually in the HV7000 ~ 9000, and consistent in all directions, the abrasive grinding wheel hardness is generally 2 to 4 times. Cutting wheel with its high durability, wear volume ratio of up to 1/1300 million. Quality wear ratio of up to 1/30 million and thus reducing production costs.
(2) has a high bending strength: flexural strength of diamond is 210 ~ 490MPa, and a composite layer below the PDC inserts have a higher bending strength thick cemented carbide support, the composite bending strength up to 1500MPa, so in the cutting process, no chipping or breakage.
(3) grinding wheel in the Leads Easy chipping: when with a larger lead angle of the tool cutting wheel, cut into the cut and easy source of chipping. To solve this problem, using a circular blade, change the main angle to make the Leads stable. In the amount of feed is 1 ~ 1.5mm case, chipping phenomenon did not occur.