Effect of Cutting Marks Created by Ball End Milling on Wettability

Abstract

Increasing energy efficiency and reducing CO₂ emissions in the manufacturing industry are pressing task for Japan as it aims for sustainable development. On the other hand, the manufacturing field requires not only processing to the intended dimensions but also value-added improvement. Value-adding is mainly performed in the surface treatment process using low-energy-efficient processing methods, which results in energy consumption and environmental impact. In this study, we investigated ways to improve the functionality of workpieces by using energy-efficient machining methods. We investigated the control of wettability using cutting marks produced by ball end milling. Seven types of cutting marks were created on brass by cutting with a φ10 mm ball end mill. The static contact angle with 1 μl of water was measured on the machined surfaces. Through the analysis of the contact angle and the cutting marks' shape, we clarified that the cutting marks influence wettability.