Evaluation of Superficial and Dimensional Quality Features in Metallic Micro-channels by Micro-Milling
Year: 2012
Type: conference-paper
Abstract: The miniaturization encourages the development of new manufacturing processes capable to conform features like micro-channels in order to use them for different applications, such as in fuel cells, heat exchangers and microfluidic devices.Many studies have been conducted on heat and fluid transfer in micro-channels, and they appeared significantly deviated from conventional theory, due to measurement errors and fabrication methods.Therefore, the present research focused on a set of experiments in micro-milling of aluminum, titanium and stainless steel varying parameters such as spindle speed (N), depth of cut per pass (a p ), channel depth (d), feed per tooth (f z ) and coolant application.The experimental results were analyzed in terms of dimensional error, channel profile shape deviation from rectangular and surface quality (burr and roughness).The micro milling process was capable of offering quality features required on the micro-channeled devices.Critical phenomena like run-out, ploughing, minimum chip thickness and tool wear was encountered as an explanation for the deviations in shape and for the surface quality of the micro channels.The application of coolant and a low depth of cut per pass were significant to obtain a better superficial quality features and a lesser amount of the dimensional error.
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Awards: G1229660507, G7372366191, G768136767
OpenAlex ID: W2239913964