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

Year 2020, , 27 - 35, 01.03.2020

Burak Öztürk , Özkan Küçük

https://doi.org/10.2339/politeknik.473105

Cited By: 2

Abstract

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

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

Abstract

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. 

Keywords

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

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