2306 Tool Performance of Uncoated Carbide in High-speed Turning of Titanium Ti-6Al-4V ELI

Abstract

ofTokUshima ， 1耐 血 te ofTechnology and Science Minami ・ Josanj ima 2 − 1， To shima − shi， To shim 亀 770 − 8506 Japan The tool pe 曲 ce of 皿 co 劇 cabide 画 GG l20408 − SGF − H13A， i 鰤ing the titanium alloy Ti ・ 6Al4V ELI with 32 HRC was invostigated ． The o 切 ective of this study is to 血 ves 口 gate the tool wear progression during 丘nish 加m 血 gof 血 e titanium al1 ( ) y using different combinations of cutting parameter values ． A high cuning speed range for 止e し mcoated carbide insert was used to cut Ti ・ 6AI ・ 4V ELI under flooded conditions ． The cutting parameters were chosen based on the expei ental design ． In 画 cu1π ， the Box − Be ken d雛 ign鄲 鵬 d to d創em 血 e 17 parameter combinations ． The 廿皿 ee main f 加 tols considered were t血 e cutting speed ， feed rate ， and depth of cut ． The cuUing speeds were l20 ， 170 ， and 220 曲 血 ； 出e 勧 values w 釘 e O． 1， 0． 15， and O． 2 mm ！ rev；and the depths of cut were O． 4， 05， and O． 6 ． The res曲 show that the cutting sp θed had the greatest effect on the tOol life ， fb 且 lowed by the feed rate and dqpth of cut ． The optimum combination

Machining of Ti-6Al-4V ELI Alloy: A brief review

“…When the working on the titanium alloy the tool wear gradually increased after the damage of the coating surface. Various researchers suggested that use only coated insert for machining of titanium alloy [1,4]. Basically, two types of coating (CVD & PVD) used during the machining of hard materials.…”

“…Mainly flank wear (adhesion), notch wear and crater wear (diffusion) produce during the machining of Ti-6Al-4V ELI alloy [4,5]. Sulaiman et al [1] analysed the tool wear rate for an uncoated tool insert during high speed turning of Ti-6Al-4V ELI alloy in a dry environment. The rate of wear significantly increase from low to high cutting speed and the tool life is less at high cutting speed.…”

“…Figure 3. Schematic of the geometry of the carbide insert used in this study [1,2] Ghani and Haron [4] investigated the wear mechanism during the turning of Ti-6Al-4V ELI with coated (TiAlN/ AlCrN) and uncoated tungsten carbide tools under MQL cooling condition. Found that the flank wear at the flank face, notch wear and crater wear at rake surface cutting insert occur.…”

“…So it's widely applicable in biomedical implants, aerospace industry, military application, automobile component (at high stress), and high pressure cryogenic vessels. During the machining of the titanium alloys, a lot of machining difficulty occurs due to its hardness, chemical reaction take place between tool and machine workpiece, high amount of heat generated at cutting zone [1]. Figure 1 shows the schematic view of machining aspects and chemical content and physical and mechanical properties of Ti-6Al-4V ELI alloy shown in Table 1and Table 2.…”

Comparative evaluation and sensitivity analysis of multi-modelling and optimization of milling Ti–6Al–4V alloy with high-pressure coolant jets

“…Among the mentioned SC technologies, RSM, ANN, and ANFIS were chosen as prediction models in this study with fewer resources and time. RSM is a powerful statistical tool with fewer experimental runs than full factorial-based design of experiment (DoE), used in different machining processes by researchers [ 10 ]. Shetty et al [ 11 ] studied the minimum quantity lubrication (MQL) turning of Ti–6Al–4V alloy in terms of speed, feed, and depth of cut using RSM.…”