Al2124 Alüminyum Alaşımının Frezeleme Performansı Üstüne Takım Kaplamasının Etkisi

Year 2019, Volume: 21 Issue: 63, 749 - 760, 20.09.2019

Emel Kuram

https://doi.org/10.21205/deufmd.2019216307

Cited By: 2

Abstract

Bu çalışmada, Al2124 alüminyum alaşımının frezelenmesi sırasında çeşitli kaplamalı karbür kesici uçların ve kesme derinliğinin yüzey pürüzlülüğü, takım aşınması, üst çapak genişliği ve frezeleme kuvvetleri gibi bazı işleme kriterlerine etkisi araştırılmıştır. Frezeleme deneylerinde fiziksel buhar biriktirme ile kaplanmış tek katlı TiCN, AlTiN, TiAlN ve iki katlı TiCN + TiN, AlTiN + TiN uçlar kullanılmıştır. Deneysel sonuçlardan, tüm kaplamalar için talaş derinliğinin artması ile serbest yüzey aşınmasının, frezeleme kuvvetlerinin, yüzey pürüzlülüğünün ve üst çapak genişliğinin arttığı sonucuna varılmıştır. Tüm kaplamalı uçlar için ana aşınma mekanizmaları adhezif ve abrazif aşınmalar olarak bulunmuştur. Sonuç olarak, iki katlı kaplamalı uçlar (TiCN + TiN ve AlTiN + TiN) ve TiCN kaplı uçlar Al2124 alüminyum alaşımının frezelenmesinde AlTiN ve TiAlN kaplı uçlara göre daha iyi işleme performansı sağlamıştır.

Keywords

Kaplama, Frezeleme, Takım aşınması, Kuvvetler, Yüzey pürüzlülüğü, Çapak

Tool Coating Effect on the Performance in Milling of Al2124 Aluminium Alloy

Abstract

This study investigated the effect of various coated carbide inserts and depth of cut on some machining criteria such as surface roughness, tool wear, top burr width and milling forces during milling of Al2124 aluminium alloy. Monolayer TiCN, AlTiN, TiAlN and two layers TiCN + TiN, AlTiN + TiN deposited by physical vapour deposition coated inserts were utilized in the milling experiments. From experimental results, it was concluded that flank wear, milling forces, surface roughness and top burr width increased with the increment in the depth of cut for all coatings. The main wear mechanisms for all coated inserts were found to be adhesive and abrasive wear. As a result, coated inserts with two layers (TiCN + TiN and AlTiN + TiN) and TiCN coated inserts gave better machining performance with respect to AlTiN and TiAlN coated inserts in milling of Al2124 aluminium alloy.

Keywords

Coating, Milling, Tool wear, Forces, Surface roughness, Burr

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