Ti6Al4V Malzemesinin Mikro Frezeleme İşleminde Sonlu Elemanlar Yöntemi İle Kriyojenik Soğutmanın Etkisinin İncelenmesi

Abstract

Original scientific paperThe objective of this study is to see for micro-milling of Ti6Al4V in the different parameters, how wear occurs on the face of the tool and how to evolve cutting temperature, forces, and chip formations with FEM. The effects of dry, liquid coolant and LN2-based cryogenic cooling applications at 50,100,150 m/s cutting speeds and 1,2,3 μm/dev feed rate were compared in micro-milling of Ti6Al4V alloy. At different parameters, internal and workpiece-cutting edges cryogenic (wacec) are simulated temperatures were observed. Cryogenic cooling, dry and liquid coolant applications perceived that tool wear, chip formation, strain, stresses, and shear forces interpreted with the FEM. Also, a mesh model based on Arbitrary Lagrangian-Eulerian (ALE) simulations and the Johnson-Cook Plasticity model for material plasticity failure criterion are used in this study. As a result, indicated that at the cutting velocity of 100 m/min, cryogenic cooling on the workpiece and cutting edges has caused into decreasing %57 of cutting temperature also by %54 lower tool wear was observed on the internal tool cryogenic, by %15 the shear stresses decreased on wacec in comparison to dry cutting.

Estimating the Strength and Deformation Properties of the End Milling Process Using Numerical Analysis Methods

“…It should be taken into consideration that almost all performed milling trials will adopt dry cutting to prevent the effects of cutting fluid or coolant, which are hard to bear in mind while simulating by FEA [4]. In this study, neither fluid nor a coolant was applied but contrary to this expression, they performed FEA using cryogenic cooling and stated that tool life, dimensional accuracy, and roughness values can be advanced by cryogenic utilization [5].…”

“…It was predicted the milling forces on the processing of aluminum alloy 7050 [4]. There are studies that evaluate the influence of cryogenic cooling on the cutting temperature, forces, and chip formation on the micro-milling of Ti6Al4V [5]. Kumar and Srinivas evaluated the burr formation while small-milling of an Al6061-T6 by flat end mill with small cutters and varying geometry of the tools [6].…”

NiTiNbX ( X=Ta ve V) Biyouyumlu Şekil Hatırlamalı Alaşımların Yapay Vücut Sıvısı İçerisinde Hücre Kültür Testi ve Bakteri Üreme Değerlendirilmesi

“…Buradaki parametreler sağlığa risk oluşturan elementler göz önüne alınarak hazırlanmalıdır. Yıllardır biyouygulama alanlarında kullanımı mevcut olan V elementi ise; NiTi bazlı şekil hatırlamalı alaşımların mekanik özelliklerini iyileştirmek için kullanılan elementler içerisinde var olmaktadır [15][16][17][18][19].…”