ENDÜSTRİYEL SİALON-TİN KESİCİ UÇ ÜRETİMİNDE PROSES KOŞULLARININ ETKİSİ

Year 2018, , 716 - 724, 11.12.2018

Nurcan Çalış Açıkbaş , Ferhat Kara

https://doi.org/10.21923/jesd.448209

Cited By: 2

Abstract

Süperalaşımlar havacılık alanında yaygın olarak kullanılan ve işlenmesi
zor malzemelerdir. Alümina ve silisyum nitrür esaslı seramik matrisli
kompozitler süperalaşımların işlenmesinde kullanılmaktadırlar. SiAlON esaslı
seramik kesici uçlar seri üretime uygun gaz basınçlı sinterleme tekniği ile
üretilebildikleri için Al₂O₃-SiC_w kesici
uçlara karşı maliyet avantajı sağlamaktadırlar. Ancak SiAlON seramikleri
kimyasal dayanım açısından süperalaşım işlenmesinde yeterli değildir. Bu
nedenle bu çalışmada SiAlON seramiklerinin kimyasal dayanımını arttırmak için
TiN ilavesi yapılarak özgün komposizyon tasarımlarıyla hazırlanmış SiAlON-TiN
kompozitlerinin pilot ölçekte üretimi yapılarak, üretim esnasında karşılaşılan
sorunlar ve çözüm önerileri açıklanmıştır. Üretim sürecinde yapılan
optimizasyon çalışmaları neticesinde istenen özelliklerde kesici uç üretimi
pilot ölçekte başarılmıştır.

Keywords

Kesici Uç, SiAlON-TiN Kompozit, Proses, Mikroyapı, Endüstriyel Üretim

THE EFFECT OF PROCESS CONDITIONS ON THE PRODUCTION OF INDUSTRIAL SİALON-TİN CUTTING TOOLS

Abstract

Super alloys are widely used in the field of aviation
and they are difficult to machine. Alumina and silicon nitride based ceramic
matrix composites have been used for super alloy machining. Since SiAlON based
ceramic cutting tools can be produced with gas pressure sintering method which
is suitable for serial production, they provide cost advantages over Al₂O₃-SiC_w
cutting tools. However SiAlON ceramics have the disadvantage for super alloy
machining due to inadequate properties in respect of chemical durability.
Therefore in this study in order to enhance chemical durability of SiAlON
ceramics, SiAlON based ceramics prepared with unique compositional design with
TiN incorporation. SiAlON-TiN composites were prepared in pilot scale which
allows description of the problems and their solutions. The optimization efforts
in the production process of SiAlON-TiN cutting tools with the desired
properties have been achieved in a pilot scale.    

Keywords

Cutting tool, SiAlON-TiN Composites, Process, Microstructure, Industrial Production

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