Description of the characteristics of traditional processing of resinoid grinding wheel:
1. High hardness and wear resistance: The hardness of the polycrystalline diamond layer is generally HV7000~9000, and the directions are consistent, which is 2~4 times the hardness of the general grinding wheel abrasive. It has high durability for cutting grinding wheels, and its volume wear ratio can reach 1/13 million. The mass wear ratio can reach 1/300,000, thereby reducing the production cost.
2. It has high flexural strength: the flexural strength of diamond is 210-490MPa, while the composite layer of the PDC blade has a thicker carbide support with higher flexural strength, and its composite flexural strength can reach 1500 MPa. Therefore, during the cutting process, no chipping or breakage occurs.
3. The resinoid grinding wheel is easy to collapse when cutting in and out: when cutting the grinding wheel with a tool with a large main declination angle, it is easy to collapse at the cutting in and out. In order to solve this problem, a round blade is used, and the main declination angle is changed to make the cut-in and cut-out smooth. When the feed amount was 1 to 1.5 mm, no edge chipping occurred.
4. Chips are in the form of powder: the chips of the cutting grinding wheel are in the form of powder, and the form of tool wear is flank wear, which mainly bears the wear of the abrasive of the grinding wheel.
5. Low cutting force and cutting temperature: The diamond composite sheet has a high thermal conductivity, which is 1.5 to 9 times that of cemented carbide and 2 to 6 times that of copper, so that the temperature in the cutting area is quickly transmitted. Therefore, the temperature of cutting resin bond or ceramic diamond grinding wheel with diamond composite tool is many times lower than that of cutting metal.
6. Compared with traditional turning tools, there is almost no dust flying during the turning process, the noise can be effectively reduced, and the working environment is further improved, which is beneficial to the physical and mental health of employees.
