Havacılık ve Uzay Malzemelerinde Soğutma Sıvısının Elektro Erozyonla Delinen Deliklerin Performans Parametrelerine Etkisinin Deneysel İncelenmesi

Kürşad GÖV
892 166

Öz


Bu çalışmada, havacılık malzemelerinden titanyum alaşımına (Ti6Al4V) ve nikel alaşımına (İnkonel 718), tek oluklu pirinç elektrotla, içerisinde farklı tiplerde soğutma sıvısı (musluk suyu, saf su ve kerosen) kullanılarak elektro erozyon ile delik delme (EEDD) işlemi uygulanmıştır. Çalışmada elektro erozyon parametreleri titanyum ve nikel alaşımları için yapılan ön deneylerde belirlenerek sabit tutulmuş ve soğutma sıvısı çeşitlerinin malzeme kaldırma oranı (MKO), elektrot aşınma oranı (EAO), yüzey pürüzlülüğü (Ra), beyaz katman tabakası (BKT), çap büyümesi (ÇB) ve çıkışta konikleşme gibi EEDD performans parametreleri üzerine etkileri incelenmiştir. Farklı soğutma sıvılarının kullanımı havacılık malzemelerinin EEDD performanslarını etkilediği belirlenmiştir. Ti6Al4V alaşımı için de-iyonize su kullanımının tüm performans parametreleri için en iyi sonuçları verdiği, İnkonel 718 malzemesi için de musluk suyu ve kerosenin de-iyonize suya göre daha iyi sonuçlar verdiği tespit edilmiştir.


Anahtar kelimeler


Elektro erozyon ile delik delme; Titanyum alaşımı; Nikel alaşımı; Kerosen; Saf su

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