Sleipner soğuk iş takım çeliğinin tornalanmasında kesme parametrelerinin kesme kuvveti, yüzey pürüzlülüğü ve talaş şekli üzerine etkisinin incelenmesi

Yıl 2021, Cilt: 36 Sayı: 3, 1241 - 1252, 24.05.2021

Barış Özlü

https://doi.org/10.17341/gazimmfd.668169

Cited By: 5

Öz

Özellikle kalıpçılık sektöründeki firmalar yüksek mukavemet ve kolay işlenebilirlik özelliklerine sahip malzemelere ihtiyaç duymaktadır. Bu malzemeleri talaşlı imalat operasyonları ile istenen kalitede, minimum işleme süresinde ve düşük maliyetli ürünlere ulaşmayı hedeflenmektedir. Bu nedenle, son zamanlarda üretilen Sleipner soğuk iş takım çeliğinin tornalanmasında kesme parametrelerinin kesme kuvveti bileşenleri, esas kesme kuvveti, yüzey pürüzlülüğü ve talaş oluşumu üzerine etkileri deneysel olarak incelenmiştir. Tornalama deneyleri CVD yöntemi ile kaplanmış sementit karbür kesici takım kullanılmıştır. Deneylerde kesme parametreleri olarak beş farklı kesme hızı, üç farklı ilerleme miktarı ve sabit talaş derinliği şeklinde belirlenmiştir. Sonuç olarak kesme kuvveti bileşenlerinden esas kesme kuvvetinin kesme hızından ve ilerleme miktarından pasif kuvvet ve ilerleme kuvvetine göre daha fazla etkilenmiştir. Esas kesme kuvveti için en iyi kesme parametreleri 100 m/dak kesme hızı ve 0,1 mm/dev ilerleme miktarıdır. İşlenmiş yüzeyler arasında en düşük yüzey pürüzlülüğü 150 m/dak kesme hızında ve 0,1 ilerleme miktarında elde edildi. Tornalama deneylerinde düşük kesme hızlarında kullanılan kesici takımlarda kararsız yığıntı talaşın (BUE) oluştuğu görülmüştür. Bununla birlikte, yüksek kesme hızlarında ve ilerleme miktarında kullanılan kesici takımların aşındığı görülmüştür. Tornalama deneyleri sonucunda istenilen sipral tipi talaş oluşumu 150 m/dak kesme hızında ve 0,1 mm/dev ilerleme miktarında görülmüştür.

Anahtar Kelimeler

Sleipner soğuk iş takım çeliği, kesme kuvveti bileşenleri, esas kesme kuvveti, yüzey pürüzlülüğü, talaş oluşumu

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