Abstract In order to provide the effective reinforcement and lubrication for reducing the friction on the interface of the grinding wheel and workpiece during the high-efficiency deep grinding of difficult-to-machine materials, an in-house developed porous composite-bonded (Cubic Boron Nitride) CBN wheel with graphene nanoplatelets was explored to meet the increasing demand for industrial purpose. It can be found from experimental study that by adding the appropriate concentration of graphene, 0.01 wt%, both of the flexural strength and tribology performance have been enhanced in the graphene-modified porous composite-bonded CBN wheel, and then the related grinding wheel was fabricated to perform the grinding experiments on the Ti–6Al–4V titanium alloy (TC4). It has been found that by adding the graphene the sharpness of the abrasives on the surface of the grinding wheel always keeps at a certain range and the grinding wheel may have self-sharpening ability which can guarantee the stability during the high-efficiency deep grinding process. Finally, by considering process parameters in this study the graphene-modified porous composite-bonded CBN grinding wheel could be used to achieve the high-efficiency deep grinding of TC4 as well as guarantee its surface quality under the grinding wheel speed of 80 m/s, grinding depth of 0.1 mm and workpiece feed speed of 0.6 m/min.

中文翻译：

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石墨烯改性多孔复合粘结CBN砂轮的摩擦学和磨削性能

摘要 为了在难加工材料的高效深磨过程中为减少砂轮与工件界面的摩擦提供有效的补强和润滑，自主研发的多孔复合粘结（立方硼） Nitride) CBN 轮与石墨烯纳米片被探索以满足日益增长的工业用途需求。实验研究发现，通过添加适当浓度的0.01 wt%石墨烯，石墨烯改性多孔复合粘结CBN砂轮的抗弯强度和摩擦学性能均得到提高，然后对相关砂轮进行了磨削加工。制造用于对 Ti-6Al-4V 钛合金 (TC4) 进行磨削实验。研究发现，通过添加石墨烯，砂轮表面磨料的锋利度始终保持在一定范围内，砂轮具有自锐能力，保证了高效深磨过程中的稳定性。 . 最后，通过考虑本研究中的工艺参数，采用石墨烯改性多孔复合粘结CBN砂轮可以实现TC4的高效深磨，并在80 m/s的砂轮速度下保证其表面质量。 ，磨削深度0.1mm，工件进给速度0.6m/min。