601-608Boron alloy
cast iron (BACI) with good mechanical properties is usually used as cylinder
liner material for heavy-duty diesel engines. Fine surface finish is often
required for the machined surface of BACI cylinder liners. This study is mainly
focused on the cutting parameters optimization on surface roughness and its
evolution with tool wear in dry turning of BACI. Response surface methodology
(RSM) involving central composite design is employed in the optimization of
cutting parameters on surface roughness. An optimization parameter
is determined with the consideration of the surface roughness and machining
efficiency. The evolutions of tool wear and surface roughness are also
investigated during BACI turning by using uncoated and PVD-TiAlN coated carbide
inserts. The results indicate that RSM is effective for the optimization of
cutting parameters on surface roughness. It is also confirmed that the
PVD-TiAlN coated insert showed a good performance with long tool life and
steady surface quality during BACI turning process