Bakır ve Pirinç Talaşı ile Takviye Edilmiş Boru Bağlantı Elemanlarının İki Farklı Üretim Türü İçin (SEC) Özel Enerji Tüketim Modeli

TS 11 EN 10242 Standartlara uygun ölçülerde ve geometrilerde üretimi yapılan boru bağlantı elemanlarının (fittings); havacılık, otomotiv ve makine üretimi gibi önemli alanlar başta olmak üzere, bina içi doğalgaz ve su tesisatlarına kadar birçok sektörde yaygın olarak kullanılmaktadır. Fittings malzemelere tek seferde diş açma işlemi, genelde CNC Freze tezgâhlarında ve özel diş açma makinelerinde yapılmaktadır. Ayrıca üniversal torna tezgâhlarında da kademeli diş açma işlemi ile de fittings malzemeler üretilmektedir. Özellikle Amerika ve Hindistan'da otomotiv sektörü ve makine ekipmanları için üretilen alüminyum alaşımlı fittings malzemeler, bu çalışmada hurda pirinç ve bakır talaşıyla belirli oranda alaşımlandırılmıştır. Literatürde ilk defa boru bağlantı elemanlarının, endüstride seri üretim koşulları dikkate alınarak, CNC Freze'de kılavuzla diş açma ve tornada kademeli diş açma işlemleri ile yapılmış ve karşılaştırmalı olarak incelenmiştir. Bu çalışmada, parametre olarak devir sayısı, alaşım tipi ve tezgah türü seçilmiş ve enerji güç dönüşüm denklemleri kullanılarak özel enerji tüketimi değerini (SEC (Specific Energy Consumption)) optimum yapan şartlar belirlenmiştir. Optimum şartların belirlenmesinde, Taguchi Yöntemi kullanılmıştır. Elde edilen malzemelerin içyapıları ve sertlik değişimleri incelenmiştir. SEC sonuçları incelendiğinde %73,91 oranda işleme tipinin ve %26,05 oranda da devir sayısının etkili olduğu gözlemlenmiştir. Bu sonuçlara göre tezgah türü olarak CNC freze, devir sayısı olarak 180 RPM ve alaşım tipi olarak da %8 Prinç Takviyeli 6061 Alüminyum alaşımı seçildiğinde optimum şartlar elde edilmiştir.

Anahtar Kelimeler:

Özel enerji tüketimi, alüminyum fittings, boru diş açma, Taguchi metodu

Specific Energy Consumption (SEC) Model for Types of Two Different Production of Fittings which is Reinforced by Chip of Copper and Brass

TS 11 EN 10242 Pipe fittings (fittings) manufactured according to standards and geometries; It is widely used in many sectors such as aerospace, automotive and machinery production, mainly in building natural gas and water installations. Threading of the fittings to the materials at one time is usually carried out on CNC mill and on special manual threading machines. In addition, fittings are also thread by universal lathes. Especially in America and India, aluminum alloy fittings manufactured for the automotive industry and mechanical equipment are alloyed via chips of brass and copper in this study. Pipe fittings for the first time in the literature, considering industrial mass production conditions, made in gradual threading via lathes and milling by tap tool were evaluated comparatively. In this study, speed, alloy type, and machine type are selected as parameters and the conditions which make optimum specific energy consumption (SEC) by using energy power conversion equations are determined. Taguchi method was used to determine the optimum conditions. microstructure and hardness changes in the obtained materials were investigated. When the results of SEC were examined, it was observed that 73,91% of the processing type and 26,01 % of the rotational speed were effective. According to these results; CNC milling as the machine type, 180 RPM as the number of revolutions, and 8% brass reinforced 6061 aluminum alloy as the alloy type, conditions were obtained.

Keywords:

Specific Energy Consumption (SEC), aluminum fittings, pipe threading, Taguchi method,

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