CW Nd:YAG laser cutting of ultra low carbon steel thin sheets using O2 assist gas

Salem, Hanadi G.; Mansour, Mohy S.; Badr, Yehya; Abbas, Wafaa A.

doi:10.1016/j.jmatprotec.2007.05.013

Cited by 30 publications

(12 citation statements)

References 16 publications

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“…Dross formation is an important performance parameter because it affects the aesthetic appearance and requires additional machining operations after laser machining [8,9]. Salem et al [10] experimentally studied fibre laser cutting for thick carbon steel sheets. They varied laser power, scanning speed and gas pressure.…”

Section: © Smementioning

confidence: 99%

An Experimental Study on Influence of Process Parameters on Dross Properties in Laser Machining of Aisi 304 Material

Jadhav

Kumar

2019

Journal of Manufacturing Engineering

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The present paper describes an experimental study on influence of process parameters on dross properties in laser machining of AISI 304 material. Process parameters namely laser power, cutting speed and gas pressure are considered in the present work. Design of experiments is done using response surface methodology and analysis of variance is performed in order to identify significance and influence of process parameters on dross height. It is found that laser power and gas pressure are most significant parameters followed by cutting speed. Dross height increases with increase in laser power and decreases with decrease in gas pressure. On the basis of experimental analysis, a second order mathematical model is developed to predict dross height. Model predictions and experimental results are found in reasonable agreement. Further, optimization of process parameters is also performed to minimize dross height

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Section: © Smementioning

confidence: 99%

An Experimental Study on Influence of Process Parameters on Dross Properties in Laser Machining of Aisi 304 Material

Jadhav

Kumar

2019

Journal of Manufacturing Engineering

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“…Salem et al [9] had investigated experimentally the influence of cutting parameters (laser power, gas pressure and scanning speed) on the hardness, oxide layer width and micro structural changes with the HAZ in 1.2 mm thick ultra-low carbon steel sheets. They had observed that the HAZ width increases with increasing the laser power and decreases with increasing scanning speed and gas pressure.…”

Section: Introductionmentioning

confidence: 99%

Artificial intelligence based modeling and optimization of heat affected zone in Nd:YAG laser cutting of duralumin sheet

Norkey

Dubey

Agrawal

2014

Journal of Intelligent &Amp; Fuzzy Systems

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Duralumin is an alloy of aluminium which has some unique properties such as high strength to weight ratio, high resistance to corrosion, light in weight, and more demanding alloy in various sectors such as space craft, marine, chemical industries, construction and automobile. These applications require very precise and complex shapes which may not be obtained with conventional machining. Pulsed Nd:YAG laser cutting may be used to fulfill these objectives by using optimum setting of process parameters. The present research paper has experimentally investigated the modeling and optimization of heat affected zone in the pulsed Nd:YAG laser cutting of Duralumin sheet with the aim to minimize heat affected zone. The quality is improved by the proper control of different process parameters such as gas pressure, pulse width, pulse frequency and scanning speed. Artificial intelligence (AI) algorithms have been used to solve the many engineering problems successfully through development of Genetic Algorithm (GA), Fuzzy Logic (FL) and Artificial Neural Network (ANN) systems. The optimization of heat affected zone has been carried out by using Hybrid Approach of Multiple Regression Analysis (MRA) and GA. In this methodology, the second order regression model has been developed by using MRA with the help of experimental data obtained by L 27 orthogonal array (OA). Further this equation has been used as objective function in GA based optimization. The significant factors have been found with further discussion of their effect on the heat affected zone.

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“…The surface quality after laser cutting is depended on many factors that can be controlled, such as cutting speed, pressure or purity of assist gas, power of laser beam and etc. There are also factors that cannot be controlled in a direct way during the laser cutting process 2,4,5,6,[8][9][10][11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

“…The used power of laser beam, pressure or purity of assist gas, thickness and type of work piece material are other parameters to impact on the surface quality [9][10][11][12][13][14][15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Analysis of laser cutting speed influence on the surface quality and shape deviation of steel parts

Kowalczyk

Zębala

2014

SPIE Proceedings

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The results of laser cutting speed influence on the quality of machined surface, defined by the Ra roughness parameter and the shape errors, in case of machining two types of steel: i) P265GH, ii) 1.4307 are presented in the paper. Two CO2 laser cutters with maximum power of the laser beam 4000W and 3200W were used for the investigation. The characteristics of the roughness parameter Ra depending on the laser cutting speed v c are presented. The diagrams of shape deviation of the machined specimens for the greatest and lowest values of the Ra for the both laser cutters are also presented. The deviation values from the theoretical profile of the particular samples, taking into account the type of the cut-out shape profiles (circular, linear) are calculated.

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CW Nd:YAG laser cutting of ultra low carbon steel thin sheets using O2 assist gas

Cited by 30 publications

References 16 publications

An Experimental Study on Influence of Process Parameters on Dross Properties in Laser Machining of Aisi 304 Material

An Experimental Study on Influence of Process Parameters on Dross Properties in Laser Machining of Aisi 304 Material

Artificial intelligence based modeling and optimization of heat affected zone in Nd:YAG laser cutting of duralumin sheet

Analysis of laser cutting speed influence on the surface quality and shape deviation of steel parts

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