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- W1526560329 abstract "Over the last 20 years, laser cutting and drilling, welding, surface heat treatment, cladding, scribing, balancing, and other laser systems have gradually made their way into the industrial workplace. However, there remain significant uncertainties in the understanding of the important physics of laser-material interaction and in material removal processes. Most research focuses on a one- or two-controlling-parameter investigation of cut quality. Furthermore, the implied definition of quality most often involves kerf width and HAZ, not surface roughness. The present work constitutes a quantitative experimental study to determine the effects of cutting speed, assist gas pressure, and thickness on the surface roughness of laser-cut mild steel. The effects of focal plane location and laser power level were also studied through a series of factorial design experiments. This systematic approach, combined with a constraint that a minimally acceptable cut must yield a surface roughness smaller than that produced by a band saw, allowed a large number of operating parameters to be investigated with a moderate number of individual experiments. A unique aspect of the study was the use of wedge-shaped test pieces which were 2.5 cm wide with a thickness varying from 0.05 cm to 0.65 cm over a 15 cm length.more » In this way, surface quality at a given cutting speed could be determined for a range of thicknesses using a single cut.« less" @default.
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- W1526560329 date "1993-08-01" @default.
- W1526560329 modified "2023-09-23" @default.
- W1526560329 title "Effects of Operating Parameters on Surface Quality for Laser Cutting of Mild Steel" @default.
- W1526560329 doi "https://doi.org/10.1115/1.2901673" @default.
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