Browse Publications Technical Papers 2008-36-0240
2008-10-07

Analysis of the Surface Integrity in Milling of AISI P20 Steel 2008-36-0240

The milling is one of the machining processes with greater employment in the today's industry, because of some aspects such as high rate of material removal and production of workpiece with surface and dimensional accuracy, as well as being a process of high flexibility, being used in the manufacture of flat surfaces, contours, slots and cavities, among others. Among the possible variations of the milling process, one of which has increased employment in the sectors of tooling is currently the top milling. The quality of the machined piece surface depends mainly on the geometry of the tool, of the cutting conditions and of the dynamic behavior of the machine tool. Were conducted tests showing a comparison of the integrity of the machined workpiece surface, with high-speed-steel HSS M2 mills, coated with titanium nitride (TiN), in the machining with minimal quantity of lubricant (MQL). The cut parameter varied was the axial depth of cut (ap), where were used 0.4 and 0.8 mm. The cutting speed was kept constant at 30 m/min. Thus, the objective of this study was to evaluate the surface quality for these cutting conditions.

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