Akademik Veri Yönetim Sistemi
3rd INTERNATIONAL BLACK SEA MODERN SCIENTIFIC RESEARCH CONGRESS, Samsun, Türkiye, 23 - 24 Mart 2023, ss.275-282
DIN1.4534 (PH13-8Mo) quality stainless steel is a special steel with a martensitic structure
used in applications where a combination of high tensile strength, fracture toughness and
corrosion resistance is required. On the other hand, there is limited information in the
literature about the processing of this steel, which is one of the materials that is very difficult
to process and requires experience. In addition, minimizing the energy consumed in the processing of materials and thus cutting forces is very important for sustainable processing. In
this context, the machinability of PH13-8Mo grade stainless steel by milling in dry and
minimum quantity lubrication (MQL) environments, which is an environmentally friendly
cutting regime, was investigated. Coated carbide cutting tools were used in the experiments
performed with the up milling technique, the cutting forces generated during the machining
were measured and the force changes according to the machining parameters were analyzed.
The experiments were carried out by choosing three different cutting speeds (V), feed rate (f)
and constant cutting depth. The resultant force (Fr) values were calculated with the help of the
cutting force components measured by KISTLER 9272 type piezoelectric dynamometer and
equipment. The effects of processing parameters on Fr were evaluated by applying analysis of
variance. It was observed that Fr values increased proportionally with increasing feed rate. On
the other hand, it was determined that as the cutting speed increased up to a certain value, the
cutting forces decreased relatively as a result of the positive effect of the increasing cutting
temperature. As a result of the evaluations, it was determined that the minimum amount of
lubrication method significantly improved the machining performance compared to
machining in dry conditions and the cutting forces were on average 6.77% lower. In addition,
the lowest resultant force was obtained at a cutting speed of 80 m/min and a feed rate of 0.04
mm/rev in the minimum quantity lubrication.