Ti-6Al-4V alaşımının frezelenmesinde kesme parametrelerinin işlenebilirliliğe ve takım aşınmasına etkisinin araştırılması
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Dosyalar
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Batman Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Ti-6Al-4V alaşımı, düşük sertlik, yüksek mukavemet ve mükemmel korozyon direnci gibi özelliklerden dolayı uzay, kimya ve tıbbi uygulamalarda kullanımını arttırmıştır. Ancak bu özellikler Ti-6Al-4V alaşımların işlenmesini zorlaştırmaktadır. Bu nedenle bu çalışmada, Ti-6Al-4V alaşımının 8 mm çapındaki sert karbür (WC) ve TiN kaplı HSS parmak freze çakılarıyla frezelenmesinde kesme parametrelerinin frezelenen bölgeye ve kesici takıma etkileri incelenmiştir. Frezeleme deneylerinde kesme hızları 5, 10, 15 m/dak, ilerleme 0.05, 0.75, 0.1 mm/dev, kesme derinliği ise 2 mm olarak seçilmiştir. Ayrıca deneylerde kesme sıvısı kullanılmamıştır. Deneysel çalışma sonunda kesme hızı, ilerleme ve kesici takım cinsinin; kesme kuvvetleri, yüzey pürüzlülüğü, takım aşınması, çapak yüksekliği ve kanal sapmalarında önemli bir etkiye sahip olduğu görülmüştür. Her iki kesici takımda da kesme hızı arttıkça kesme kuvvetlerinin, yüzey pürüzlülüğünün ve çapak yüksekliğinin azaldığı, ilerleme arttıkça kesme kuvvetlerinin, yüzey pürüzlülüğünün ve çapak yüksekliğinin arttığı görülmüştür. Hem kesme hem de ilerlemenin artması aşınmayı arttırmıştır. Kesme hızına göre ilerlemenin artmasıyla kanal sapmaları nominal ölçüye yakın bir değerde elde edildiği görülmüştür. Frezelenen kanalın girişindeki sapmanın çıkışındakinden daha yüksek olduğu görülmüştür. Ti-6Al-4V alaşımın frezelenmesinde tüm sonuçlar için en ideal sonuçlar sert karbür (WC) parmak frezede elde edilmiştir.
Ti-6Al-4V alloy has increased its use in aeronautics, chemistry and medical applications owing to various properties such as low hardness, high strength and excellent corrosion resistance. However, these properties complicate the machining of Ti-6Al-4V alloy. Therefore, in this study, the effect of cutting parameters on milling zone and cutting tools were investigated by the hard carbide (WC) and TiN coated HSS end mills with 8 mm diameters of Ti-6Al-4V alloy in milling. The following parameters were chosen in milling experiments: cutting speeds 5, 10 and 15 m/min, feed rates 0.05, 0.075 and 0.1 mm/rev and depth of cut 2mm. Also, cutting fluids were not used in the experiments. As a result of the experimental study, it was seen that cutting speed, feed rate and type of cutting tool important had significant effects on cutting force, tool wear, surface roughness, burr height and channel deviation. In both cutting tools, it was seen that as cutting speed increased, the cutting forces, surface roughness and burr heights reduced; on the other hand, as the feed rate increased, cutting forces surface roughness and burr heights increased. Tool wear increased with increasing of the both cutting speed and the feed rate. It was observed that a value close to the nominal size was obtained in channel deviations with the increasing of feed rate compared to cutting speed. It was seen that deviation in the milling channel input was higher than that of its output. For all results, optimum results were obtained from hard carbide (WC) end mills in the milling Ti-6Al-4V alloy.
Ti-6Al-4V alloy has increased its use in aeronautics, chemistry and medical applications owing to various properties such as low hardness, high strength and excellent corrosion resistance. However, these properties complicate the machining of Ti-6Al-4V alloy. Therefore, in this study, the effect of cutting parameters on milling zone and cutting tools were investigated by the hard carbide (WC) and TiN coated HSS end mills with 8 mm diameters of Ti-6Al-4V alloy in milling. The following parameters were chosen in milling experiments: cutting speeds 5, 10 and 15 m/min, feed rates 0.05, 0.075 and 0.1 mm/rev and depth of cut 2mm. Also, cutting fluids were not used in the experiments. As a result of the experimental study, it was seen that cutting speed, feed rate and type of cutting tool important had significant effects on cutting force, tool wear, surface roughness, burr height and channel deviation. In both cutting tools, it was seen that as cutting speed increased, the cutting forces, surface roughness and burr heights reduced; on the other hand, as the feed rate increased, cutting forces surface roughness and burr heights increased. Tool wear increased with increasing of the both cutting speed and the feed rate. It was observed that a value close to the nominal size was obtained in channel deviations with the increasing of feed rate compared to cutting speed. It was seen that deviation in the milling channel input was higher than that of its output. For all results, optimum results were obtained from hard carbide (WC) end mills in the milling Ti-6Al-4V alloy.
Açıklama
Anahtar Kelimeler
Aşınma, Çapak Yüksekliği, Frezeleme, Titanyum, Yüzey Pürüzlülüğü, Wear, Burr High, Milling, Titanium, Surface Roughness
Kaynak
WoS Q Değeri
Scopus Q Değeri
Cilt
Sayı
Künye
Karabıyık, A. (2016). Ti-6Al-4V alaşımının frezelenmesinde kesme parametrelerinin işlenebilirliliğe ve takım aşınmasına etkisinin araştırılması (Yayınlanmamış Yüksek Lisans Tezi). Batman Üniversitesi Fen Bilimleri Enstitüsü, Batman.
