Sert malzemelerin tornalanmasında takım aşınmasının tepki yüzeyi metodolojisi ile incelenmesi
Date
2017-12-21
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Gazi Üniversitesi Mühendislik-Mimarlık
Abstract
Bu çalışmada, çekirdeğine kadar 62 HRC sertliğine sertleştirilmiş soğuk iş takım çeliği iş parçalarının (AISI D2) kaplamalı seramik takımlarla (CNGA 120404 KY4400) tornalanması işlemlerinde takım aşınması – kesme parametreleri (kesme hızı, Vc; ilerleme, f; kesme derinliği, ap) ilişkisi incelenmiştir. Tepki Yüzeyi Metodolojisi’nde (TYM) kullanılan Merkezi Bileşik Tasarım (MBT) ile deney planlaması yapılarak, modelleme ve analiz gerçekleştirilmiştir. Kesme hızı en etkili faktör olmak üzere; kesme hızı ve ilerlemedeki düşüşün, takım aşınmasını azaltacağı gözlenmiştir. Kesme derinliğinin ise, aşınma üzerinde anlamlı bir etkisine rastlanmamıştır. Çalışmanın sonunda, optimum takım aşınması değeri ve bu değere ulaşmak için gerekli kesme parametresi seviyeleri belirlenmiştir.
In the present work, the relationship between tool wear and the cutting parameters (cutting speed, Vc; feed, f; depth of cut, ap) was investigated in hard part turning operations of cold work tool steel (AISI D2) hardened to 62 HRC up to its core. Ceramic inserts (CNGA 120404 KY4400) were used in the operations. Experimental modeling and analysis were performed after applying a Central Composite Design (CCD), an experimental design tool in Response Surface Methodology (RSM). As well as cutting speed being the most influential factor, decreases in cutting speed and feed were observed to minimize the tool wear. No significance of ap on tool wear was encountered through the analysis. In the last part of the work; optimum tool wear values, as well as the cutting parameter values that give these optimum values were determined.
In the present work, the relationship between tool wear and the cutting parameters (cutting speed, Vc; feed, f; depth of cut, ap) was investigated in hard part turning operations of cold work tool steel (AISI D2) hardened to 62 HRC up to its core. Ceramic inserts (CNGA 120404 KY4400) were used in the operations. Experimental modeling and analysis were performed after applying a Central Composite Design (CCD), an experimental design tool in Response Surface Methodology (RSM). As well as cutting speed being the most influential factor, decreases in cutting speed and feed were observed to minimize the tool wear. No significance of ap on tool wear was encountered through the analysis. In the last part of the work; optimum tool wear values, as well as the cutting parameter values that give these optimum values were determined.
Description
Keywords
Engineering, Sert malzeme tornalama, Takım aşınması, Tepki yüzeyi metodolojisi, Merkezi bileşik tasarım, Hard turning, Tool wear, Response surface methodology, Central composite design, Aisi 4140 steel, Machining parameters, Flank wear, Performance, Roughness, Optimization, Mechanisms, Geometry, Inserts, Layer, Cutting, Surface properties, Tool steel, Turning, Wear of materials, Central composite designs, Hard turning, Methodology, Response surface, Tool wear, Cutting tools
Citation
Murat, D. vd. (2018). ''Sert malzemelerin tornalanmasında takım aşınmasının tepki yüzeyi metodolojisi ile incelenmesi''. Journal of the Faculty of Engineering and Architecture of Gazi University, 33(4), 1299-1308.