Micromachines, Vol. 14, Pages 649: Reduction of Friction Using Microabrasive Air Jet Machining

Micromachines, Vol. 14, Pages 649: Reduction of Friction Using Microabrasive Air Jet Machining

Micromachines doi: 10.3390/mi14030649

Authors: Sungcheul Lee Soochang Choi Hyeon Hwa Lee Seung-Kook Ro

In this paper, we introduce a microabrasive air jet (micro-AAJ) machining system and describe machining results obtained while using it. Our research activities have focused on the development of micro-AAJ machining methods for friction reduction without requiring a mask. Through this study, we want to show that such processing is possible without a mask when using the AAJ method. In this paper, a micro-AAJ machining system is introduced, and the processing results are described. By comparing the friction coefficient of texturing under various conditions, the relative relationship between the surface shape and the friction coefficient can be identified. We investigated the effect of the relationship between rotating velocity, traverse speed, density of the patterned area and injection pressure on friction. The friction is decreased with a low traverse speed and high-density patterned area under high-speed driving conditions, as verified by experiments using a friction test system.