Studi eksperimental pertumbuhan aus sisi (vb) pahat karbida berlapis Titanium Aluminium Nitrida (TiAlN) pada pembubutan basah baja ASTM A29

rizki ramadhan, sunarto sunarto

Abstract


Permesinan basah menjadi pilihan apabila dampak yang diakibatkan suhu pemotongan yang tinggi akan mengurangi kemampuan pahat dan memperpendek umur pahat. Pemesinan basah adalah sejumlah cairan dialirkan ke kawasan pemotongan bertujuan untuk menurunkan suhu pemotongan dan melumasi bagian-bagian pemesinan sehingga diharapkan permukaan pemesinan memiliki integritas permukaan yang dapat meningkatkan masa pakai alat potong (life time). Metode yang digunakan dalam penelitian ini adalah dengan menggunakan pahat karbida (WC+Co) yang dilapisi dengan bahan pelapis titanium aluminium nitride (TiAlN) dengan tipe DCGX 11T3 02-Al yang direkomendasikan untuk memotong paduan Aluminium. Penelitian ini digunakan untuk memotong baja ASTM A29 dengan tujuan membuktikan ketangguhan pahat. Hasil yang didapat pahat mampu memotong baja ASTM A 29 sampai kecepatan potong V = 250 m/menit, gerak makan (f) = 0,1 mm/putaran dan kedalaman makan potong (a) = 1,5 mm dalam waktu (tc) = 6,20 menit dan keausan tepi (VB) sebesar 0,12 mm dengan jenis kerusakan aus tepi, built up edge, dan aus kawah

Kata kunci: Pemesinan Basah, Aus Sisi (VB), Gerak Makan (f)

 

Experimental study of side wear growth (Vb) chisels of Titanium Aluminum Nitride  (TiAlN) carbide in the wet turning of ASTM A29 Steel

Abstract

 

Wet machining is an option when the impact caused by high cutting temperatures will reduce tooling ability and the shorten tool life. Wet machining is a number of fluids flowed into the cutting area aiming to reduce the cutting temperature and lubricate the machining parts so that the machining surface is expected to have surface integrity that can increase the life time of the cutting tool. The method used in this study is to use carbide cutting tool (WC + Co) coated with titanium aluminum nitride (TiAlN) coating with type DCGX 11T3 02-Al which is recommended for cutting aluminum alloys. This research was used to cut ASTM A29 steel with the aim of proving the toughness of the tool. The results obtained by the tool are able to cut ASTM A 29 steel to cutting speed V = 250 m / minute, feed motion (f) = 0.1 mm / rotation and depth of feeding cut (a) = 1.5 mm in time (tc) = 6.20 minutes and edge wear (VB) of 0.12 mmwith the type of flank wear, built up edge, and crater wear.

 

Keywords: Wet Machining, Flank Wear (VB), Feeding Motion (f)

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DOI: http://dx.doi.org/10.30811/jp.v17i2.1020

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