Machinability with Different Cutting Parameters of Sintered Steels


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BEKÖZ ÜLLEN N.

18th International Metallurgy & Materials Congress, IMMC’2016, İstanbul, Turkey, 29 September - 01 October 2016, pp.1002-1004

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1002-1004
  • Istanbul University Affiliated: No

Abstract

Powder metallurgy (PM) is known for producing of complex parts with near-net shape. However, many PM components require surface finish machining to reach final tolerance or shapes not possible to achieve in the compaction step. This study deals with the quantitative evaluation of the machinability of sintered steels during turning operation. Sintered parts were prepared with (MnS and MnX) and without additives for machinability evaluations. All parts were machined in a CNC lathe using a face turning operation which performed using two different cutting inserts. These were uncoated WC-Co cermet and solid carbide. The cutting speeds and feed rates used were with different values while the depth of cut was kept constant. The results showed that the effect on the machinability of MnS addition remarkably positive and enables extended tool life for all inserts. The performance of MnX was found less effective. The tool life of uncoated WC-Co insert is better than the solid carbide at identical cutting condition. Also, the feed rate has a significant effect on the machined surface.