Sleipner soğuk iş takım çeliğinin tornalanmasında kesme parametrelerinin kesme kuvveti, yüzey pürüzlülüğü ve talaş şekli üzerine etkisinin incelenmesi
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Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Gazi Üniversitesi
Access Rights
info:eu-repo/semantics/openAccess
Abstract
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.
In this study, the effects of cutting parameters on cutting force components, surface roughness and chip formation in turning Sleipner cold work tool steel has been examine experimentally. In turning experiments were used cemented carbide cutting tools coated with CVD method. Experiments were carried out at five different cutting speeds, three different feed rates and constant depth of cut. Cutting tool wears was examined by scanning electron microscopy (SEM). As a result, the main cutting force in cutting force components was affected more by the cutting parameters than the passive force and the feed force. The lowest cutting force was obtained at 359,6 N in 100 m/min cutting speed and 0,1 mm/rev feed rate. The highest cutting force was measured at 921,3 N in 50 m/min cutting speed and 0,3 mm/rev feed rate. Among the machined surfaces the lowest surface roughness was obtained as 0.97 µm at 150 m/min cutting speed and 0.1 feed rate. The highest surface roughness was found to be 5.12 µm at 50 m/min cutting speed and 0.3 mm/rev feed rate. It has been observed that there is chip adhesion to cutting tools used at low cutting speeds. Furthermore, there was wear on the cutting tools used at high cutting speeds and feed rates. Chip shapes similar to compound and spiral chip types were observed in the parameters where the lowest cutting force and surface roughness were measured.
In this study, the effects of cutting parameters on cutting force components, surface roughness and chip formation in turning Sleipner cold work tool steel has been examine experimentally. In turning experiments were used cemented carbide cutting tools coated with CVD method. Experiments were carried out at five different cutting speeds, three different feed rates and constant depth of cut. Cutting tool wears was examined by scanning electron microscopy (SEM). As a result, the main cutting force in cutting force components was affected more by the cutting parameters than the passive force and the feed force. The lowest cutting force was obtained at 359,6 N in 100 m/min cutting speed and 0,1 mm/rev feed rate. The highest cutting force was measured at 921,3 N in 50 m/min cutting speed and 0,3 mm/rev feed rate. Among the machined surfaces the lowest surface roughness was obtained as 0.97 µm at 150 m/min cutting speed and 0.1 feed rate. The highest surface roughness was found to be 5.12 µm at 50 m/min cutting speed and 0.3 mm/rev feed rate. It has been observed that there is chip adhesion to cutting tools used at low cutting speeds. Furthermore, there was wear on the cutting tools used at high cutting speeds and feed rates. Chip shapes similar to compound and spiral chip types were observed in the parameters where the lowest cutting force and surface roughness were measured.
Description
Keywords
Sleipner Soğuk İş Takım Çeliği, Kesme Kuvveti Bileşenleri, Esas Kesme Kuvveti, Yüzey Pürüzlülüğü, Talaş Oluşumu
Journal or Series
Journal of the Faculty of Engineering and Architecture of Gazi University /Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi
WoS Q Value
Q4
Scopus Q Value
Q2
Volume
36
Issue
3
