Tribochemical machining of polycrystalline diamond using ferrous tool materials

Abstract

This article studies the tribochemical machining of polycrystalline diamond (PCD) by utilizing ferrous tool material as the cutter. The influence of cutting parameters and different ferrous materials on the material removal rate of the PCD workpiece has been investigated. The material removal rate increases with the increase of the rpm of ferrous “cutter”, AISI 1020 steel is unable realize the tribochemical machining, and the material removal rate of using AISI 1045 steel was higher than that of using W2-21/2 steel, e.g. when rpm was 3000, the material removal rate of using AISI 1045 was 0.059 mm/min, and using W2-21/2 it was 0.020 mm/min. The surface roughness of the machined PCD workpiece using W2-21/2 (0.40 μm) was slightly improved in comparison to that produced using AISI 1045 (0.47 μm). The influence of hydrogen catalysis on tribochemical machining of PCD has been investigated. Compared with no use of steam, if a large amount of steam is continuously injected the material removal rate will significantly increase, e.g. when the rpm was 3000 (using AISI 1045) the material removal rate of no steam was 0.059 mm/min, while with steam it was 0.082 mm/min.

Keywords:

• Tribochemical machining
• PCD
• ferrous material
• material removal rate
• hydrogen catalysis

Acknowledgments

The authors express our appreciation for the financial supported by the Department of Education of Jilin Province (Grant No: JJKH20170786KJ).

Additional information

Funding

The authors express our appreciation for the financial supported by the Department of Education of Jilin Province (Grant No: JJKH20170786KJ).