CNC Tel Elektro Erozyon Tezgâhında Tel Elektrot Özelliklerinin Yüzey Pürüzlülüğüne Etkisinin Taguchi Yöntemiyle Modellenmesi

Öz

Bu çalışmada, geleneksel olmayan imalat yöntemlerinden olan CNC tel elektro erozyon tezgâhında tel elektrot özelliklerinin yüzey pürüzlülüğüne etkisi Taguchi deneysel tasarım yöntemi ile modellenmiştir. Yüzey pürüzlülüğü deneyleri tel elektrot çapı, tel malzemesi ve kaplama türü, soğutma yöntemi ve iki farklı tip iş parçası malzemesi göz önünde bulundurularak gerçekleştirilmiştir. Deneyler sonucunda elde edilen yüzey pürüzlülüğü değerleri bağımlı değişken olarak seçilirken bağımsız değişken olarak tel elektrot kaplama türü, tel elektrot çapı, soğutma yöntemi ve iş parçası malzemesi olarak seçilmiştir. Bağımsız değişkenler her biri için iki seviye ve dört faktör belirlenerek L16 (2**4) ortogonal deney tasarım yöntemi seçilmiştir. Belirlenen ortogonal Taguchi tasarım yöntemi ile yüzey pürüzlülüğü üzerinde kontrol faktörlerini etkisi Sinyal/Gürültü (S/N) oranlarına göre tespit edilmiştir. Ayrıca kontrol faktörlerinin yüzey pürüzlülüğü üzerindeki etkisi ANOVA testi yapılarak ortaya konulmuştur. En yüksek yüzey pürüzlülük değerleri kaplamasız tel elektrotlarla en düşük yüzey pürüzlülük değerleri ise Zn (çinko) kaplı tel elektrotlarla ortaya çıkmıştır. İş parçası türüne bağlı olarak, AISI D2 çeliğinin işlenmiş yüzeyinde elde edilen yüzey pürüzlülük değerleri daha düşük olduğu tespit edilmiştir.

Anahtar Kelimeler

• CNC tel elektro erozyon,tel elektrot çapı,tel malzemesi,soğutma yöntemi,Taguchi deney tasarımı,ANOVA testi

Kaynakça

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