Machining Performance of Ti-6Al-4V Titanium Alloy Assisted by High Pressure Waterjet

Abu Bakar, Mohd Hadzley and Raja Abdullah, Raja Izamshah and Md. Ali, Mohd Amran and Jusoff, Kamaruzzaman and Sivarao, Subramonian and Ariff, Hambali and Hussein, Nur Izan Syahriah and Wan Mahmood, Wan Hassrulnizzam and Abdullah, Abu and Yusoff, Marianna and Shamshiri, Meysam (2013) Machining Performance of Ti-6Al-4V Titanium Alloy Assisted by High Pressure Waterjet. World Applied Sciences Journal, 21. pp. 98-104. ISSN 1818-4952

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The High Pressure Waterjet Assisted Machining (HPWAM) is a machining process that involves high pressure coolant being delivered at the cutting zone. This paper investigates the performance of conventional and HPWAM when machining Ti-6Al-4V titanium alloy. The evaluations were based on the tool life, wear mechanisms, surface profile and chip formation. The coolant pressures, cutting speed, feed rate and depth of cut were set at 11-20.3 MPa, 110m/min, 0.15 mm/rev and 0.5 mm respectively. The results showed that improved tool life as much as 195% can be achieved when machining Ti-6Al-4V with HPWAM due to better coolant access at the cutting zone. Surfaces generated when machining with HPWAM were generally acceptable with negligible physical damage. Long and continuous chip formations were observed when machining in conventional coolant supply corresponded to the low coolant pressure. Increasing coolant pressure significantly reduces the chip size, resulting in a reduction in the tool-chip contact and improvement in lubrication at the contact interfaces. This paper provides the understanding and correct use of HPWAM especially when machining Ti-6Al-4V alloy.

Item Type: Article
Uncontrolled Keywords: High Pressure Waterjet Assisted Machining % Coolant Pressure % Cutting Tool % Titanium Alloy % Surface Integrity
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Manufacturing Engineering > Department of Manufacturing Process
Date Deposited: 09 May 2013 02:56
Last Modified: 28 May 2015 03:50
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