Cutting parameter optimization in shoulder milling of commercially pure molybdenum


Gokce H., Ciftci I., DEMİR H.

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING, cilt.40, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 40 Konu: 7
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s40430-018-1280-8
  • Dergi Adı: JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING

Özet

Due to its superior properties such as high melting point (2617 degrees C), high thermal conductivity and low thermal expansion at higher temperatures, molybdenum is a refractory metal and is used for making critical parts in defense, space, electronics and nuclear industries. High cost of molybdenum makes the selection of suitable cutting conditions imperative in machining operations in order to obtain the required surface quality and dimensional accuracy. In this study, suitable cutting tools and cutting parameters were aimed to be determined in terms of cutting forces (F-c) and average surface roughness (R-a) when shoulder milling commercially pure molybdenum. The milling tests were carried out at 0.05, 0.1, 0.15, 0.2 mm/tooth feed rates and 75, 100, 125, 150 m/min cutting speeds using four different cutting tools. The Taguchi's experimental design (L16 orthogonal array) technique was implemented. Analysis of variance was used to determine the effects of cutting tools and cutting parameters on R-a and F-c. The results showed that the feed rate is the most influential parameter for F-c while the cutting speed is for R-a.