EFFECT OF CUTTING SPEED AND TOOL GRADE ON MACHINABILITY OF PM STEELS DETERMINED BY FACE TURNING METHOD

The machinability of PM steels is tested by different methods under different cutting conditions for singular cutting processes. Within this work the effect of the cutting speed and the cutting tool grade on machinability of PM steels was tested by the face turning method. Face turning tests at cons...

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Bibliographic Details
Published in:Powder Metallurgy Progress 2005-01, Vol.5 (2), p.104-114
Main Authors: Salak, A, Vasilko, K, Selecka, M, Danninger, H, Jakubeczyova, D, Faberova, M
Format: Article
Language:English
Online Access:Get full text
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Summary:The machinability of PM steels is tested by different methods under different cutting conditions for singular cutting processes. Within this work the effect of the cutting speed and the cutting tool grade on machinability of PM steels was tested by the face turning method. Face turning tests at constant revolutions of the lathe of 900 and of 1400 rpm with coated PM HSS and hardmetal inserts on ring-shaped test pieces (O40/18 x 14 mm) from 5 PM alloys were carried out. The number of passes as a machinability criterion conducted up to a specified cutting edge wear of the tools used for the tested alloys was determined. Microstructure of the materials in front of the cutting tool edge, morphology of the chips and the wear of the cutting tools were analysed. The different effect of the cutting speed and of the cutting tool grade on machinability of investigated alloys were observed.
ISSN:1335-8987