AA2024 Alaşımlarının Delinmesinde Çevre Dostu İmalat için Kullanılan İçten ve Dıştan MMY Yöntemlerinin İşleme Performansına Etkisi: YSA ve Taguchi Analizleri için bir Karşılaştırma

Öz

Son yıllarda sürdürülebilir imalata olan ilgi, ekonomik ve çevre dostu Minimum Miktarda Yağlama (MMY) yöntemine artan bir talep oluşturmuştur. Ancak, delme operasyonlarında içten ve dıştan MMY uygulamalarını karşılaştıran yeterli çalışma bulunmamaktadır. Bu çalışmanın amacı, MMY yönteminin içten ve dıştan uygulanmasının delme performansı üzerindeki etkilerini incelemektir. Taguchi L9 deney tasarımı kullanılarak AA2024 alüminyum alaşımı, üç farklı soğutma koşulunda (içten MMY, dıştan MMY, kuru), üç farklı kesme hızı (100, 125, 150 m/dk) ve üç farklı ilerleme (0.10, 0.15, 0.20 mm/dev) ile delinmiştir. Yüzey pürüzlülüğü (Ra) performans kriteri olarak belirlenmiş, her deneyde 30 tekrar yapılmış ve her şart için ortalama Ra değerleri hesaplanmıştır. Deneyler sonunda, en düşük Ra değeri (0.5 µm), en düşük kesme hızı (100 m/dk) ve ilerleme (0.1 mm/dev) parametrelerinin kullanıldığı içten MMY koşulunda elde edilmiştir. Dıştan MMY koşulunda kuru kesmeye yakın Ra sonuçları gözlenmiştir. Yapılan ANOVA analizi, Ra değerleri üzerinde en büyük etkiye sahip kontrol faktörünün soğutma koşulu olduğunu ortaya koymuştur. Ayrıca, 30. delikten sonra takımların aşınması SEM görüntüleriyle incelenmiş ve içten MMY'de minimum deformasyon gözlenmiştir. Deneylerde ölçülen Ra verilerine YSA ve Taguchi analizleri uygulanmıştır. Ölçülen Ra verilerinin, Taguchi yaklaşımı kullanılarak tahmin edilen verilerle %97, YSA yaklaşımı kullanılarak tahmin edilen verilerle %99 uyum sağladığı görülmüştür.

Anahtar Kelimeler

• Delik delme
• İçten MMY
• Dıştan MMY
• Taguchi
• ANN

The Effect of Internal and External MQL Methods Used for Environmentally Friendly Manufacturing on Machining Performance in Drilling AA2024 Alloys: A Comparison for ANN And Taguchi Analyzes

Öz

In recent years, the interest in sustainable manufacturing has created an increasing demand for the economical and environmentally friendly Minimum Quantity Lubrication (MQL) method. However, there are not enough studies comparing internal and external MQL applications in drilling operations. The aim of this study is to investigate the effects of internal and external MQL application on drilling performance. Using Taguchi L9 experimental design, AA2024 aluminum alloy was drilled under three different cooling conditions (internal MQL, external MQL, dry), three different cutting speeds (100, 125, 150 m/min) and three different feeds (0.10, 0.15, 0.20 mm/rev). Surface roughness (Ra) was determined as the performance criterion, 30 repetitions were made in each experiment and the average Ra values were calculated for each condition. At the end of the experiments, the lowest Ra value (0.5 µm) was obtained in the internal MQL condition where the lowest cutting speed (100 m/min) and feed (0.1 mm/rev) parameters were used. In the external MQL condition, Ra results close to dry cutting were observed. The ANOVA analysis revealed that the control factor with the greatest effect on Ra values was the cooling condition. In addition, tool wear after the 30th hole was examined with SEM images and minimum deformation was observed in the internal MQL. ANN and Taguchi analyses were applied to the Ra data measured in the experiments. It was observed that the measured Ra data were in agreement with the data estimated using the Taguchi approach by 97% and with the data estimated using the ANN approach by 99%.

Anahtar Kelimeler

• Drilling
• Internal MQL
• External MQL
• Taguchi
• ANN

Kaynakça

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