Kriyojenik işlem uygulanmış 6061 alüminyum alaşımının frezelenmesinde kesme parametrelerinin yüzey pürüzlülüğü ve takım aşınması üzerine etkisi
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Dosyalar
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Düzce Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Günümüz endüstrisinde demir ve çelikten sonra en çok alüminyum ve alüminyum alaşımları kullanılmaktadır. 6061 alüminyumun özellikle savunma sanayisinde kullanılmasının yanı sıra, uçak sanayi, gemi inşaat sektörü, askeri köprüler, uzay uygulamaları gibi ağır sanayilerde kullanımı oldukça fazladır. Bu çalışmada 80x80x30 mm ebatlarında alüminyum 6061-T651 alaşımına yüzey frezeleme işlemi uygulanmıştır. Çalışmada ayrıca malzemeye ve kesici takımlara kriyojenik işlem uygulanmıştır. Deneyler normal malzeme/normal takım, normal malzeme/kriyojenik takım, kriyojenik malzeme/normal takım, kriyojenik malzeme/kriyojenik takımlar için her bir eşlemede 27 deney olmak üzere toplam 108 deney yapılmıştır. Deneysel tasarım için tam faktöriyel tasarım kullanılmış, kesme parametreleri olarak üç farklı kaplamalı kesici takım (Al2O3-TiCN-TiN, TiAlN-NANO ve AlTiN-ÇOK KATMANLI), üç farklı kesme hızı (250,350,450 m/dak) ve üç farklı ilerleme (0,15, 0,30, 0,45 mm/diş) kullanılmıştır. Deneylerde kesme derinliği 0,5 mm olarak sabit tutulmuştur. Yürütülen her bir deney sonrası işlenen yüzeyin başından ve sonundan yüzey pürüzlülüğü ölçülmüştür. Ayrıca kesici takımlarda oluşan takım aşınması optik mikroskop ile incelenmiştir. Deneyler esnasında kesme bölgesinde oluşan ısılar da termal kamera ile gözlemlenmiştir. Deneysel sonuçlar varyans analizi ve üç boyutlu grafiklerle yorumlanmıştır. Kriyojenik işlem uygulanmış kesici takımlarla yürütülen deneylerde yüzey pürüzlülüğü ve takım aşınması için en iyi sonuçlar elde edilmiştir. Termal kamerayla ölçülen sıcaklıklar incelendiğinde en düşük sıcaklıklar kriyojenik işlem görmüş malzeme ve takımlarla yürütülen deneylerden elde edilmiştir.
Aluminium and its alloys are the most commonly used materials after iron and steel in industry today. The alloy referred to as the 6061 aluminum is widely used in the defense industry, as well as in heavy industries such as aircraft manufacture, shipbuilding, construction of military bridges, and space applications. In this study, an aluminum alloy of 6061-T651 with dimensions of 80 x 80 x 30 mm underwent a surface milling process. Furthermore, the cryogenic process was applied to the material and the cutting tools. A total of 108 tests were performed with 27 tests for each of the matchings for normal material with normal tools, normal material with cryogenic tools, cryogenic material with normal tools, and cryogenic material with cryogenic tools. Full factorial design was used for the test design, with cutting parameters defined as cutting tools with 3 different coatings (Al2O3-TiCN-TiN, TiAlN-NANO, and AlTiN multilayer), at 3 different cutting speeds (250, 350, 450 m/min), and with 3 different feed rates (0.15, 0.30, and 0.45 mm/tooth). Shaving dimensions were kept constant at 0.5 mm. Following each test, surface roughness of the treated surface was measured at the beginning and end sections. Furthermore, tool wear in cutting tools was examined under the optical microscope and the temperature in the cutting zones was observed with a thermal camera. Test results were evaluated with a variance analysis, as well as using 2D and 3D graphics. Best test results were obtained with the cutting tools that were treated with the cryogenic process. A review of the temperatures measured with a thermal camera showed that the lowest temperatures were obtained from experiments conducted with the materials and tools that previously underwent cryogenic treatment.
Aluminium and its alloys are the most commonly used materials after iron and steel in industry today. The alloy referred to as the 6061 aluminum is widely used in the defense industry, as well as in heavy industries such as aircraft manufacture, shipbuilding, construction of military bridges, and space applications. In this study, an aluminum alloy of 6061-T651 with dimensions of 80 x 80 x 30 mm underwent a surface milling process. Furthermore, the cryogenic process was applied to the material and the cutting tools. A total of 108 tests were performed with 27 tests for each of the matchings for normal material with normal tools, normal material with cryogenic tools, cryogenic material with normal tools, and cryogenic material with cryogenic tools. Full factorial design was used for the test design, with cutting parameters defined as cutting tools with 3 different coatings (Al2O3-TiCN-TiN, TiAlN-NANO, and AlTiN multilayer), at 3 different cutting speeds (250, 350, 450 m/min), and with 3 different feed rates (0.15, 0.30, and 0.45 mm/tooth). Shaving dimensions were kept constant at 0.5 mm. Following each test, surface roughness of the treated surface was measured at the beginning and end sections. Furthermore, tool wear in cutting tools was examined under the optical microscope and the temperature in the cutting zones was observed with a thermal camera. Test results were evaluated with a variance analysis, as well as using 2D and 3D graphics. Best test results were obtained with the cutting tools that were treated with the cryogenic process. A review of the temperatures measured with a thermal camera showed that the lowest temperatures were obtained from experiments conducted with the materials and tools that previously underwent cryogenic treatment.
Açıklama
Anahtar Kelimeler
Makine Mühendisliği, Mechanical Engineering
