Investigation of tool wear when machining AISI 1045 using uncoated carbide cutting tool

Lim, Liyen (2016) Investigation of tool wear when machining AISI 1045 using uncoated carbide cutting tool. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project presents the experimental investigation that was done on the machining performance of uncoated carbide cutting tools on different cutting speed and condition. Effect of cutting speed and feed rate were identified based on the comparison of the tool wear trend and wear mechanism for both dry and wet machining conditions. The workpiece materials selected in this project was AISI 1045 considered as medium carbon steel. The cutting tools were undergone machining by CNC lathe machine and then have been analyzed in order to study their performance. Two parameters were varied which were cutting speed and feed rate. The depth of cut was kept constant for all the setting conditions. At the above cutting conditions, the performance characteristics measured were the tool wear. A scanning electron microscopy (SEM) and stereo microscope (SM) has been used to examine the tool wear and wear mechanism. From the analysis, result showed that tool wear occurred for both cutting conditions. However, wet cutting performed better as compared to dry cutting. The use of coolant demonstrated a negligible effect when machining AISI 1045 at higher feed rate. This study shows that increase of cutting speed and feed rate will increase tool wear of cutting tool at both conditions.

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