Detaylı Arama
İptal
Bulunan: 4 Adet 0.001 sn
- Eklemek veya çıkarmak istediğiniz kriterleriniz için 'Dahil' / 'Hariç' seçeneğini kullanabilirsiniz. Sorgu satırları birbirine 'VE' bağlacı ile bağlıdır.
- İptal tuşuna basarak normal aramaya dönebilirsiniz.
Filtreler
Filtreler
Bulunan: 4 Adet 0.001 sn
Yayın Dili : en ✕Konu Başlıkları : Casting ✕
Koleksiyon [3]
Ambargo Durumu [1]
Tam Metin [1]
Yayın Türü [1]
Yazar/lar [7]
Atıf Dizini [3]
Konu Başlıkları [12]
Yayıncı [3]
Yayın Tarihi [3]
Yayın Dili [1]
Erişime Açık

Observation of Hot Tearing in Sr-B Modified A356 Alloy

ULUDAĞ, Muhammet | ÇETİN, Remzi | DIŞPINAR, Derya.

In this work, T-shaped mould design was used to generate hot spot and the effect of Sr and B on the hot tearing susceptibility of A356 was investigated. The die temperature was kept at 250°C and the pouring was carried out at 740°C. The amonut of Sr and B additions were 30 and 10 ppm, respectively. One of the most important defects that may exist in cast aluminium is the presence of bifilms. Bifilms can form by the surface turbulence of liquid metal. During such an action, two unbonded surfaces of oxides fold over each other which act as a crack. Therefore, this defect cause many problems in t ...Daha fazlası

Makale 2017 De Gruyter Open Ltd 4 Görüntülenme
Erişime Açık

Effect of Cooling Intensity and Position on Solidification in Semi-Continuous Casting of Copper

HAMEED, Amar Hasan | MOHAMMED, Ahmed Abdullah | FADHIL, Obaid

Cooling heat flux effect in both primary and secondary cooling zone has been studied in semi-continuous casting of copper billet. Sufficient cooling is essential to reduce casting defects and to get high productivity, however low rate of solidification is aimed in order to get coarser grain size and softer metal for less losses in extrusion. A three-dimensional numerical model has been developed including solidification behavior of copper through mushy zone. At steady state and constant casting speed, solid shell thickness is monitored during the reduction of cooling rate at mould region to av ...Daha fazlası

Makale 2016 Open Journal of Fluid Dynamics 2 Görüntülenme
Erişime Açık

Grain Refinement, Modification, Degassing and Melt Quality Relationship in Al-7Si-0.3Mg

ÇETİN, Remzi | ULUDAĞ, Muhammet | DIŞPINAR, Derya

In this work, Al-7Si-0.3Mg alloy was studied. The alloy conditions was selected to be as-received, AlB3 grain refined and Sr modified. For each parameter, castings were made before and after degassing. In order to quantify the melt quality, reduced pressure test was used and bifilm index measurements were made. All the cast parts were subjected to metallographical examination, and thus, porosity measurements, distribution, area fraction were compared for each of the casting conditions.

Makale 2014 5 Görüntülenme
Erişime Açık

Optimization of secondary cooling percentage during semi-continuous copper casting process

HAMEED, Amar Hasan

Sufficient cooling is essential to reduce casting defects and to get high productivity in semi-continuous casting of copper billet. On the other hand, low rate solidification is desired in order to develop coarser grain size and softer metal for less energy losses and metal discards in extrusion. Cooling intensity and percentage in both primary and secondary cooling stages was inspected to optimize microstructure and quality of billets. A three-dimensional steady-state numerical model was developed including solidification behavior of copper through mushy zone. Solid shell thickness, pool leng ...Daha fazlası

Makale 2017 Begell House, Inc. 2 Görüntülenme
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