Cutting Data Influence on Cutting Forces and Surface Finish during Sintered Carbide Turning

Abstract:

The paper presents research of turning of super hard materials, like sintered carbides, with PCD (polycrystalline diamond) tools. Sintered carbides with cobalt, as metal binder, with good properties of abrasion resistant in high temperature environment are used as construction material. These materials, produced by a powder metallurgy process, are difficult-to-machine because of their high hardness and brittleness. In the work, a special attention was paid on the cutting force component F_c and surface finish, in the form of roughness parameter Ra, at variable cutting data (cutting speed v_c, feed f and depth of cut a_p). The test stand for research was consisted of the precise lathe, work piece (a tungsten carbides rod with 25% Co content), tool holder of DTGNR 2020K16 type, insert of TNGA type with PCD edges, Kistler force dynamometer and Taylor Hobson profilometer. Taguchi design and ANOVA analysis were applied.

• Periodical: Key Engineering Materials (Volume 581)
• Pages: 148-153
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.581.148
• Online since: October 2013
• Authors: Wojciech Zębala, Robert Kowalczyk
• Keywords: Cutting Force, Roughness, Sintered Carbide, Turning

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