Surface Integrity Analysis In CNC Milling of 6061-T6 Aluminum Alloy

Hwang, Tan King (2010) Surface Integrity Analysis In CNC Milling of 6061-T6 Aluminum Alloy. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Preview	PDF (24 pages) surface_integrity_analysis_in_CNC_milling_of_6061-T6_aluminum_alloy-24_pages.pdf - Submitted Version Download (4MB)
	PDF (Full Text) Surface_Integrity_Analysis_In_CNC_Milling_Of_6061-T6_Aluminum_Alloy-Full_Text_-_Copy.pdf - Submitted Version Restricted to Registered users only Download (4MB)

Abstract

This study presents the surface integrity analysis and optimization of machining parameters in 3-axis CNC milling of 6061-T6 aluminum alloy. Aluminum alloy is widely used in industry such as automation, aerospace and others industry. CNC milling was selected due to the versatile function. The goal of this research is to determine the influence of surface roughness and microhardness upon CNC milling due to the cutting speed, feed rate, and depth of cut. The response surface methodology (RSM) was used in this study to design and analysis the experiment.There are 20 trials were conducted by using 3-axis CNC milling machine and the high speed steel (HSS) end mill with 4 flutes was used in the experiment. The surface roughness was checked by using portable surface roughness tester, while, the microhardness were checked by micro DM2D Digital Micro Hardness tester. The result was analyzed by using the RSM in the Design Expert Software. The mathematical modeling was established after analysis. The significant parameters suggested are cutting speed and feed rate while depth of cut is not a significant factor.For the optimization section, the best predicted setting is cutting speed of 89.99 m/min, feed rate of 191mm/min and depth of cut of 0.57mm in order to archive good surface finish. The average deviation percentage value is 16.59%. In this experiment, the microhardness did not have significant changes except for certain trial sample.

Actions (login required)

View Item