Determination of Machinability Properties of Nimonic-60 Superalloy Under Sustainable Conditions

Yıl 2024, , 1228 - 1239, 01.09.2024

Ünal Değirmenci

https://doi.org/10.21597/jist.1481108

Öz

Sustainable machining is an approach that aims to minimize environmental impacts and optimize resource use in industrial production processes. The basis of this approach lies in reducing the environmental and economic impacts associated with the use of machining methods. Machining is a widely used method for shaping metal parts, and this process is often energy-intensive and wasteful. Sustainable machining involves various strategies. These include methods such as the use of renewable energy resources, increasing energy and material efficiency, improving recycling and waste management, and selecting materials to reduce cutting fluids and environmental impacts in production processes. In this study, the machinability properties of Nimonic-60 superalloy, which is an important material in the field of industry, were examined. In order to conduct machinability trials, three different cutting speeds (Vc, 40-50-60 m/min), three different feed rates per tooth (fn, 0.050-0.075-0.100 mm/rev), and three different cooling/lubrication conditions (dry-air-MQL) were used. The trials were conducted using a computer-controlled three-axis milling machine. Additionally, Taguchi analysis was performed to reduce the number of experiments and costs. Consequently, it was concluded that the most optimal choice for surface roughness, flank wear, and cutting temperature was the Minimum Quantity Lubrication (MQL) environment. Minimum surface roughness, tool wear and cutting temperature in the MQL environment were measured as 0.499µm, 0.201mm and 66.4 C˚ respectively. The Taguchi study findings revealed that cooling/lubrication had the most impact on surface roughness (56.66%), flank wear (87.96%), and cutting temperature (78.68%).

Anahtar Kelimeler

Nimonic-60, The milling, Machinability, MQL, Tool wear

Etik Beyan

There is no need to obtain ethics committee permission for the article prepared.

Nimonic-60 Süper Alaşımının Sürdürülebilir Koşullar Altında İşlenebilirlik Özelliklerinin Belirlenmesi

Öz

Sürdürülebilir işleme, endüstriyel üretim süreçlerinde çevresel etkileri en aza indirmeyi ve kaynak kullanımını optimize etmeyi amaçlayan bir yaklaşımdır. Bu yaklaşımın temeli, işleme yöntemlerinin kullanımıyla ilişkili çevresel ve ekonomik etkilerin azaltılmasında yatmaktadır. İşleme, metal parçaları şekillendirmek için yaygın olarak kullanılan bir yöntemdir ve bu işlem genellikle enerji yoğun ve israfa neden olur. Sürdürülebilir işleme çeşitli stratejiler içerir. Bunlar arasında yenilenebilir enerji kaynaklarının kullanılması, enerji ve malzeme verimliliğinin arttırılması, geri dönüşüm ve atık yönetiminin iyileştirilmesi, üretim süreçlerinde kesme sıvılarının ve çevresel etkilerin azaltılmasına yönelik malzeme seçimi gibi yöntemler yer almaktadır. Bu çalışmada sanayi alanında önemli bir malzeme olan Nimonic-60 süper alaşımının işlenebilirlik özellikleri incelenmiştir. İşlenebilirlik denemelerinin yapılabilmesi için üç farklı kesme hızı (Vc, 40-50-60 m/dak), diş başına üç farklı ilerleme (fn, 0.050-0.075-0.100 mm/dev) ve üç farklı soğutma/yağlama koşulu (kuru, hava, MQL) kullanıldı. Deneyler bilgisayar kontrollü üç eksenli bir freze makinesi kullanılarak gerçekleştirildi. Ayrıca deney sayısını ve maliyetleri azaltmak amacıyla Taguchi analizi yapılmıştır. Sonuç olarak yüzey pürüzlülüğü, yan aşınma ve kesme sıcaklığı açısından en uygun seçimin Minimum Miktarda Yağlama (MQL) ortamı olduğu sonucuna varılmıştır. Minimum Miktar Yağlama ortamında en düşük yüzey pürüzlülüğü, takım aşınması ve kesme sıcaklığı sırasıyla 0.499μm, 0.201mm ve 66.4 C˚ olarak ölçülmüştür. Taguchi çalışmasının bulguları, soğutma/yağlamanın yüzey pürüzlülüğü (%56.66), yan aşınma (%87.96) ve kesme sıcaklığı (%78.68) üzerinde en fazla etkiye sahip olduğunu ortaya çıkardı.

Anahtar Kelimeler

Nimonic-60, Frezeleme, İşlenebilirlik, MQL, Takım aşınması

Etik Beyan

Hazırlanan makalede etik kurul izni alınmasına gerek yoktur.

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