Investigation on the Suitability of Powder Particulars Used in Powder Bed/Feed Additive Manufacturing and Powder Manufacturing Methods

Öz

Powder metallurgy (P/M) is known as an industrial part manufacturing by powder pressing and sintering using ceramic and metal based particulars, but, P/M method has incorperated the additive manufacturing as a new method which is combined in technologies of laser, machine, design and software. The manufacturing of prototype and/or useful industrial parts has become possible as layer upon layer with today’s additive manufacturing technology by using suitable laser, electron and ultraviolet beam in form of powder, wire, sheet and melt from polymer, ceramic and metal based materials. The literature survey has been done about the powder bed/feed additive manufacturing methods, the powder characterizations used in these methods and powder manufacturing methods in this study. In addition, the effect of dimension, shape, physical properties, and chemical purity of powders on the product properties manufactured by powder bed/feed additive manufacturing can be expressed with respect of investigations in the literature.

Anahtar Kelimeler

• Powder metallurgy,additive manufacturing,powder character

Toz Yataklı/Beslemeli Eklemeli İmalatta Kullanılan Partiküllerin Uygunluk Araştırması ve Partikül İmalat Yöntemleri

Öz

Toz metalürjisi (TM); seramik ve metal esaslı partiküllerin preslenmesi ve sinterlenmesi ile endüstriyel parça imalatı olarak bilinmekte ancak; lazer, makine, tasarım ve yazılım teknolojilerinin bir araya getirildiği eklemeli imalat yöntemi olarak adlandırılan yeni bir teknoloji ile tanışmıştır. Günümüz eklemeli imalat teknolojisi ile, polimer, seramik ve metal esaslı malzemelerin partikül (toz), tel, plaka/saç ve eriyik formları uygun şartlarda lazer, elektron ve ultraviyole ışınları kullanılarak katmanlı bir şekilde kullanışlı prototip ve/veya parça imalatı mümkün hale gelmiştir. Bu çalışmada, özellikle toz beslemeli eklemeli imalat yöntemleri, bu yöntemlerde kullanılan partiküllerin karakterleri ve toz imalat yöntemleri ile ilgili literatür araştırması yapılmıştır. Ayrıca yapılan bu literatür araştırmasında, partikül tane boyutunun, şeklinin, fiziksel özelliklerinin ve kimyasal saflığının, toz beslemeli eklemeli imalat ile elde edilen ürünlerin özelliklerine etkisi ifade edilmeye çalışılmıştır.

Anahtar Kelimeler

• Toz Metalürjisi,eklemeli imalat,toz karakteri

Kaynakça

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