Study of the Possibilities of Obtaining Powder Materials by Rotational Turning with Multi-Faceted Cutters

Composite materials obtained through powder metallurgy methods are increasingly applied in various industries, particularly in aviation and rocket and space equipment which use their high specific strength, resistance to high temperatures and other properties. Producers of composite materials use various metallic and non-metallic materials (fibres and powders) as fillers [1-2]. For example, the high plasticity (moldability) of aluminium powders allows utilizing them as a matrix material in moulding of composites using various methods of rolling, extrusion, and intense plastic deformation [3-5]. However, the widespread use of chip as a raw material for the production of composites is hampered by the complexities in obtaining powders with granules of the necessary shape and size.

Analysis And Design Of ADPCM System

In this paper, roughness characteristics as Ra and Rz are observed and their changes regarding to different tool rotation speed without feed, using carbide tool in process of hard machining. By experiments it is shown that, with higher tool revolutions and cutting speed, turning with helical cutting edge yields higher surface quality. Furthermore, during experiments it was proved that it is possible to use carbide tools in hard machining. Results of this paper show that rotational turning has a high potential to become an efficient alternative to hard turning, especially when it comes to large scale production of simple shaped parts.