Fine Metallic Particle Emission when Milling Aluminium Alloys and Aluminium Metal Matrix Composites

Abstract:

Machining activities generate aerosols that can be harmful, degrade the environment or slow down theproduction. The main objective of this study was to evaluate the effects of machining conditions (cutting parameters and workpieces materials) on metallic particle emission during milling to help determining the machining conditions leading to ecological and occupational safe machining practices. The workpieces materials tested were aluminium alloys (6061-T0, T4 and T6 and A319) and aluminiummetal matrix composites (MMC) containing hard particles (SiC) for wear resistance and nickel-coated graphite particles for improved friction and machinability. It is found that the reinforcement within the aluminium MMCs reduces the fine particle emission as compared to unreinforced aluminium alloys. In general, the quantity of the particle emitted depends on the machining parameters settings. Among the aluminium alloys, the particle emission appeared to be dependent on material’s ductility.

• Periodical: Materials Science Forum (Volumes 828-829)
• Pages: 381-388
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.828-829.381
• Online since: August 2015
• Authors: Victor Songmene*, R. Njoya Doko
• Keywords: Aluminium, Fine Dust, Machining Conditions, Milling, MMC, PM2.5

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