Publication: Surface roughness analysis of co2 laser cutting of 304-stainless steel
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Date
2008-04-01
Authors
Khaw, Chek Yee
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Abstract
In this project, top, bottom and average surface have been investigated repetitively. Samples of stainless steel-304 were cut on a CO2 laser cutting system and the combined effects of power cutting speed and gas pressure on surface roughness and striation pattern have been studied. Design of Experiment (DOE) method will be used to understand the effect of various laser processing parameters changes on the surface finish. Analysis of Variance (ANOVA) was used to determine the significant factor and the percentage of contribution that affect the quality of surface roughness. For the range of operation conditions tested, it was observed that cutting speed had a major effect on surface finishing which increase the surface roughness of the 5mm stainless steel, while power affects were secondary. Low feed rates gave good surface roughness and low striation. Taguchi method was used to determine the optimum parameter to produce minimum surface roughness on 5mm thickness stainless steel- 304 by COs laser cutting.