Necati Yalçin

• Doctorate
• Dr. Öğr. Üyesi at Gazi University

Additively manufactured complex lattice geometries incorporated in structural materials is a relatively new concept and gaining popularity. In this approach solid bodies are replaced by repeating tailored design cellular structures enabling significantly light-weighted components. However, as a building block of the entire part, these cellular stru...

In this paper, batch reactor design is described. Suspension polymerization reaction is themost preferred element for EPS production. In suspension polymerization, the particle sizeobtained from the reaction is very important. Parameters such as mixing speed, stirrer shape,reactor size and reactor geometry, reaction temperature and pressure affect...

z Kimya proseslerde sıvı akışı, kütle transferi ve ayırma işlemleri gibi fiziksel işlemler çok büyük bir rol oynar. Bununla birlikte, kimyasal bir değişimin meydana geldiği herhangi bir üretim işleminde, kimyasal reaktör üretimin kalbini oluşturur. Bu çalışmada, polistiren(PS) üretimi için kullanılacak kesikli reaktör tasarımı açıklanmaktadır. Süsp...

In this study, machinability tests were executed. AA2024 aluminum alloy that are used in field of automotive and aero industries widely was preferred material in the experimental works. Effects of aging methods that were applied to AA2024 aluminum alloy on machinability were investigated. Test specimens obtained from T3 and T6 that are used methods...

In this article, the interfacial heat transfer coefficient (IHTC) is investigated as a function of superheat temperatures (100°C, 150°C, and 200°C) and casting heights (100, 150, and 200 mm). The experiments were conducted for a liquid alloy (Al-Si 12.9%) on water-cooled copper chill during vertically upward solidification of a eutectic Al-Si alloy...

The objective of the present work was to investigate the effect of silicon content on the interfacial heat transfer coefficient (IHTC) for vertically upward unidirectional solidification of Al-Si casting on water cooled cupper chills during solidification. The interfacial heat transfer coefficient measured as a function of different silicon content...

ZET Sıvı metalin temizlenmesi için bir çok yöntem kullanılmaktadır. KGDD'de kirliliklerin bulunması mekanik özellikleri ciddi şekilde azaltabilmektedir. KGDD'den filtrasyon yoluyla inklüzyonların giderilmesi gelişmiş mekanik özellikler sağlamaktadır. Filtrasyon için birçok farklı tip filtreler bulunmaktadır. Bu çalışmada filtrasyon işleminde serami...