The experimental study on structured topological fish scale surface by micro-abrasive jet machining

Abstract

To prepare structured fish scale surfaces on brittle and difficult-to-process materials, the topological features of fish scale surfaces are first extracted, and a surface model of fish scale units is established. This fish scale model is then used to construct the structured fish scale surface. Next, based on the principle of micro-abrasive air jet processing, the feasibility of air jet processing for topological fish scale experiments and the important process parameters affecting the morphology of the structured fish scale surface are analyzed. Finally, using the single-factor experimental method, the important processing parameters are experimentally analyzed to obtain a better topological fish scale surface unit, and the structured surface is arranged accordingly. The research results show that a reasonable combination of process parameters for micro-abrasive jet machining of structured topological fish scale surfaces includes a machining time of 10s, a machining pressure of 0.5 MPa, a stand-off distance of 10 mm, and a jet angle of 30°. Despite the potential for certain effects on the morphology and size of the fish scale surface, the topological properties of the fish scale surface remain unchanged using the proposed machining method.

Keywords

• micro-abrasive jet machining
• fish scale surface
• topological feature
• surface topography