Finish machining of mirror-like diamond surfaces using a composite electroplating in-process sharpening method

Abstract

Finishing mirror-like surfaces on chemically vapor-deposited diamond film using an in-process composite electroplating of diamond grains onto the tool surface, the tool can maintain its sharpness in a grinding process. The effect of diamond grit size of the tool on the grinding characteristics of diamond film is investigated. To promote optimum grinding efficiency, a high variation rate in the surface roughness of diamond film and a small growth rate in the coating thickness are desired. A distribution model of the diamond grits in the coating layer is deduced, and a composite electroplating in-process sharpening grinding mechanism is developed using a body-centered tetragonal structure. A two-stage composite electroplating in-process sharpening grinding procedure is used to grind the diamond film. A grit size of 25 µm is selected to conduct the composite electroplating in-process sharpening grinding for 30 min at an initial surface roughness of 1.1 µm. Then, the operating conditions are switched to a grit size of 3 µm and a grinding time of 180 min, and a mirror-like surface on the diamond film with an average surface roughness of 0.03 µm is obtained.

Wear resistance of Ni-Co/SiC composite coating by jet electrodeposition in the presence of magnetic field

“…In Figure 3(d), the surface roughness of the Ni-Co/SiC (6 g/L) composite coating improved effectively by jet electrodeposition in the presence of magnetic field, as low as 0.87 ± 0.004 μm. 20…”

“…In Figure 3(d), the surface roughness of the Ni-Co/SiC (6 g/L) composite coating improved effectively by jet electrodeposition in the presence of magnetic field, as low as 0.87 6 0.004 mm. 20 The thickness of the coatings is shown in Figure 4. It can be seen that the thickness of the coatings decreases in the presence of magnetic field.…”

High-Speed Sharpening and Thermo-activated Refinement of Blade Tools from Synthetic Diamonds

“…Abrasive processes have been studied experimentally and theoretically as well, including research regarding the mechanisms of grain wear during the wheel grinding process [8][9][10], and the optimum machining parameters for efficient grinding [11][12][13]. Additionally, advanced methods like ultrasonic vibration assisted grinding [14], or hybrid methods for sharpening tools by using nanosecond laser [15], have been presented and proposed by researchers.…”