New developments in laser-assisted oxygen cutting

O’Neill, W; Gabzdyl, Jack

doi:10.1016/s0143-8166(00)00070-1

Cited by 76 publications

(24 citation statements)

References 3 publications

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“…The HAZ observations are consistent with previously published results [8][9][10][11][12], and all simply result from how heat is transferred from the flowing melt to the material surrounding the cut.…”

Section: Discussionsupporting

confidence: 91%

Heat affected zones and oxidation marks in fiber laser–oxygen cutting of mild steel

Al-Mashikhi

Powell

Kaplan

et al. 2011

Journal of Laser Applications

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The effect of cutting speed and sheet thickness on surface oxidation and heat affected zones (HAZ) has been investigated for laser-oxygen cutting of mild steel sheet with a fibre laser. Optical and scanning electron micrographs were used to determine the extent of surface oxidation and HAZ from plan and cross-sectional views respectively. The HAZ is consistently wider at the bottom of the cut compared to the HAZ at the top of the cut. With increasing speed, the width of the HAZ at the top of the cut decreases whereas the HAZ width at the bottom of the cut generally increases.No simple, direct relationship between HAZ width and surface oxidation was seen.However, it is possible to state that in each case considered here, the HAZ would be completely removed if they are machined back by a depth equal to the extent of the surface oxidation.

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Section: Discussionsupporting

confidence: 91%

Heat affected zones and oxidation marks in fiber laser–oxygen cutting of mild steel

Al-Mashikhi

Powell

Kaplan

et al. 2011

Journal of Laser Applications

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“…Their approach is interesting but as it has to do with a transient thermal field, many parameters have to be tuned at the same time. Laserassisted oxygen cutting was studied by O'Neill and Gabzdyl (O'Neill and Gabzdyl, 2000) who reported input (exothermic) powers ranging from 13 to 23 kW depending on plate thickness and cutting speed. Finally, Ermolaev et al (Ermolaev, 2013) carried out a theoretical and experimental study for hybrid laser-assisted oxygen cutting of mild steel sheets but did not report specifically heat input powers.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical characterisation of heat flow during flame cutting of thick steel plates

Thiébaud

Drezet

Lebet

2014

Journal of Materials Processing Technology

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a b s t r a c tTemperatures measurements during flame cutting of a thick steel plate and measurements of the extension of the fusion and heat affected zones and Vickers hardness after cutting have been performed. Additionally, a 3-D thermal model for simulation of flame-cutting has been developed. For the sake of simplicity, the model depends only on two parameters: (i) the heat density within the flame, and (ii) the heat transfer coefficient within the air gap that forms behind the cut. The results show that the model is able to properly reproduce the measured temperature curves and the heat affected zone with an input power in the same range of those reported in the literature. A process efficiency of 26.5% is found in the steady state regime of flame-cutting.

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“…Laser-assisted oxygen cutting (LASOX), developed by O'Neil, makes it possible to use a medium laser power to cut thick steel plates [8]. A 1-kW defocused laser spot, whose diameter is larger than that of the nozzle exit, heats up the surface of cut pieces and initiates Fe-O combustion reaction.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and optimal design of supersonic nozzle for laser-assisted oxygen cutting of thick steel sections

Zhang

Wen

Yuan

et al. 2016

Int J Adv Manuf Technol

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New developments in laser-assisted oxygen cutting

Cited by 76 publications

References 3 publications

Heat affected zones and oxidation marks in fiber laser–oxygen cutting of mild steel

Heat affected zones and oxidation marks in fiber laser–oxygen cutting of mild steel

Experimental and numerical characterisation of heat flow during flame cutting of thick steel plates

Evaluation and optimal design of supersonic nozzle for laser-assisted oxygen cutting of thick steel sections

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