Investigation of wear performance of alumina based cutting tool by using different Cold Isostatic Press (CIP) pressure

Zainuddin, Muhammad Hakim (2018) Investigation of wear performance of alumina based cutting tool by using different Cold Isostatic Press (CIP) pressure. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This study focuses on the application of cold isostatic press (CIP) to produce alumina based ceramic cutting tool. Spray dried alumina powder was used as a raw material to produce the cutting tool and was pressed using hydraulic hand press with the pressure of 5 tons before compressed through cold isostatic press machine at different pressure that is 0 Mpa, 250 mpa, 300 mpa and 350 mpa. Green body was ejected from the mould and sintered at 1400°C for 9 hours with 4 hours holding time. The cutting tools were then tested in CNC lathe machine using turning operation to machine AISI 1045 medium carbon steel. The machining tests were held at constant cutting speed of 200 m/min with a constant feed rate of 0.1 mm/rev and constant depth of cut of 0.4 mm. Tool wear and wear mechanism of the cutting tools were analyzed and identified using stereo microscope. The results show that alumina cutting tool with the CIP pressure of 300 Mpa adequate to machine AISI 1045 steel with the longest machining time that is 206 seconds. In terms of wear mechanism, the alumina cutting tool demonstrated notch wear, abrasive wear and adhesive wear at the edge of the cutting tool. This study enables the industry to understand how CIP pressure affects the cutting tool on tool wear when machining AISI 1045.

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