Investigation Of Using Of Aluminum Dross As An Alternative Gas Removing Material In Steel Casting

Yıl 2020, Cilt: 23 Sayı: 3, 641 - 647, 01.09.2020

Hasan Hasırcı

https://doi.org/10.2339/politeknik.532616

Öz

The use
of aluminium (Al) dross with casting residue instead of Al-Ca-Mg alloy used as
degasser in steel casting processes was investigated in this study. This dross
has not been subjected to any purification (purification, cleaning) process and
also has no economic value.

Samples
were produced by GS-52 steel material using resin sand casting. The degassing
processes in the casting samples were carried out by using 0.035% by weight
Al-Ca-Mg and aluminum dross. For comparison with these samples, a non-degassed
sample was also produced. The results of this study showed that, instead of the
AlCaMg alloy, Al-dross could be used for gas (oxygen) removal.

Anahtar Kelimeler

Steel casting, Al dross, deoxidation, microstructure, mechanical properties

Çelik Dökümde Alternatif Gaz Giderme Malzemesi Olarak Alüminyum Cürufu Kullanımının İncelenmesi

Öz

Döküm artığı olan aluminyum (Al) cürufunun, çelik döküm
işlemlerinde gaz giderici olarak kullanılan Al-Ca-Mg alaşımı yerine
kullanılabilirliği bu çalışmada araştırılmıştır. Bu cüruf hiçbir saflaştırma
(arıtma, temizleme) işlemine tabi tutulmamış ve aynı zamanda ekonomik değeri de
yoktur. 

Numuneler, GS-52 çelik malzeme kullanılarak reçineli kum kalıba döküm yöntemiyle
üretilmiştir. Döküm numunelerde gaz giderme işlemleri, ağırlıkça %0,035
oranında Al-Ca-Mg ve aluminyum cürufu kullanılarak gerçekleştirilmiştir. Bu
numunelerle karşılaştırma amacıyla gaz giderilmemiş numune de üretilmiştir.  Bu çalışma sonuçları, AlCaMg alaşımı yerine
özellikle Al cürufunun gaz (oksijen) giderme için kullanılabileceğini
göstermiştir.

Anahtar Kelimeler

Çelik döküm, Al cürufu, deoksidasyon, mikroyapı, mekanik özellik

Kaynakça

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