Carbon Dioxide Laser Etch Drilling Of Mild Steel

Mohamad Nabil Fikri , Abdul Rahim (2008) Carbon Dioxide Laser Etch Drilling Of Mild Steel. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This paper presented an investigation on width line based on the etching process on CO2 laser machine. The parameters used in this case study are power, cutting speed and gas pressure. The images captured using microscope axioscope shows different sizes of width line for different parameters. For that matter, other factors that influence the width line are the machining parameters, machining condition, type of assisting gas, machining material. Entirely, this investigation consists of 8 experiments with different parameters setup. The experiment was done on 3 replications in order to get the average values for width line. Then, all the data were evaluated using the MINITAB 14 software. The obtain results shows that, there are four significant parameters for width which are power, speed, gas pressure and combination of gas pressure and speed. Interaction Plot for Width shows the interaction between these parameters which are power, cutting speed and gas pressure. The result of increasing the power will increase the width on the etching surface. Then, increasing the gas process will reduce the width line due to higher absorption and laser beam become narrow which affecting less area on the interaction zone. Cutting speed control the absorption and distribution on the laser beam. Basically, low cutting speed will produce wider etching due to high removal rate and higher density on the interaction zone. Plots such as Surface Plot, Contour Plot and Main Effect Plot also used to determine the affect on width line for different parameter setup.

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