Optimization of Cryogenic Treated Nickel-Based Superalloy in Terms of Electro-Erosion Processing Performance

Yıl 2019, Cilt: 7 Sayı: 1, 115 - 126, 15.01.2019

Engin Nas Sıtkı Akıncıoğlu

https://doi.org/10.21541/apjes.412042

Cited By: 14

Öz

In this study,
electrical discharge machining (EDM) performance of cryogenic nickel based
superalloy was investigated. For this purpose, thermal resistance nickel based super
alloying was applied to shallow and deep cryogenic process. The parameters used
in the experiments are designed with the Taguchi L9 orthogonal array to reduce
the test cost. The obtained results were examined statistically and the effect
of surface roughness and material wear loss (MRR) of cryogenic treatment was
investigated. The Gray-Taguchi approach is used to determine the ideal
processing parameters. The most effective parameters for surface roughness
values are A1B1 and A2B1 for MRR. According to ANOVA results, the most
effective parameter for the surface roughness was determined as 70.99% of the
time on, the material duration was determined as 71.66% for material wear loss.
For the maximum wear amount and minimum surface roughness value, it was
determined that the ideal factors for the gray relational grade occur in the
parameters performed by the first experiment.

Anahtar Kelimeler

Taguchi Optimization, Gray-Taguchi Optimization, EDM, cryogenic treatment, nickel-based superalloy

Kriyojenik İşlem Görmüş Nikel Esaslı Süper Alaşımın Elektro-Erozyon İşleme Performansı Optimizasyonu

Öz

Bu çalışmada kriyojenik işlem uygulanmış nikel esaslı süper
alaşımın elektro erozyon işleme (EEİ) ile işlenme performansı araştırılmıştır. Bu
amaçla ısıl dirençli nikel esaslı süper alaşıma sığ ve derin kriyojenik işlem
uygulanmıştır. Deneylerde kullanılan parametreler deney maliyetini azaltmak
için Taguchi L₉ ortogonal diziyle tasarlanmış olup elde edilen
sonuçlar istatistiksel olarak incelenerek kriyojenik işlemin yüzey pürüzlülüğü
ve malzeme aşınma kaybı (MAK) etkisi araştırılmıştır. Her iki çıktı parametresi
için en ideal parametrelerin belirlenmesinde ise Gray-Taguchi yaklaşımı
kullanılmıştır. Yapılan çalışmanın sonucunda; yanıt tabloları incelendiğinde
yüzey pürüzlülük değerleri için en etkili parametrenin malzeme ve vurum süresi
için sırası ile A1B1, malzeme aşınma kaybı için ise A2B1 olarak belirlenmiştir.
Anova sonuçlarına göre yüzey pürüzlülüğü için en etkili parametrenin %70,99 ile
vurum süresi olarak, malzeme aşınma kaybı için ise % 71,66 ile malzeme olarak
oluştuğu belirlenmiştir. Maksimum aşınma miktarı ve en düşük yüzey pürüzlülük
değeri için gri ilişkisel derecesi hesaplandığında her ikisi için ideal
faktörler birinci deney ile gerçekleştirilen parametrelerde oluştuğu tespit
edilmiştir.

Anahtar Kelimeler

Taguchi Optimization, Gray-Taguchi Optimizasyonu, Elektro Erozyon İşleme, Kriyojenik işlem, Nikel esaslı süper alaşım

Kaynakça

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