DRY HIGH SPEED MILLING OF COBALT-BASE HARD FACING SUPERALLOY
Keywords: Stellite 6, Plasma Transferred Arc (PTA) deposition, Dry machining, tool wear, tool coatings
AbstractThe forging work involves extreme impacts, forces, stresses and temperatures. Thus, mould dies must be extremely resistant. The aim of the project PROMETFOR, supported by the French National Agency (ANR), is to perform a rapid prototyping process answering to forging conditions integrating a Stellite 6 hardfacing deposed by a PTA process. This study talks about the dry machining of the hardfacing, using a two inserts machining tool and a high speed milling machine equipped by a power consumption recorder Wattpilote. The aim is to show the machinability of the hardfacing, measuring the power and the insert wear by optical microscope and white light interferometer, using different strategies and cutting conditions.