Surface Quality in Milling of AZ91D Magnesium Alloy

摘要

This paper is an attempt at determining the e?ect of technological parameters of milling on the surface roughnessof the AZ91D magnesium alloy. The cutting tool used in tests was a TiAlN-coated carbide milling cutter. The milling tests were carried out at variable cutting speed, feed per tooth and depth of cut, and the results were compared.The analysis was based on the 2D roughness parameters measured on the end and lateral faces of specimens, aswell as on the 3D roughness parameters measured on the end faces of specimens. The test results indicated thatthe increase in the feed per tooth results in the increase in the value of 2D and 3D surface roughness parameters. Itwas found that cutting speed and axial depth of cut have a negligible e?ect on the 2D roughness of the workpiecesurface, whereas the increase in cutting speed results in the reduction of the 3D surface roughness parameters.