Cutting Parameters for the Reduction in Material Degradation in the Laser Cutting of Advanced High-Strength Steels

Lamíkiz, Aitzol; Lacalle, Luís Norberto López de; Sánchez, J.A.; Pozo, D. del; Etayo, J.M.; Lopez, JM

doi:10.1243/09544054b12304

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Several design of experiment methods have been used to examine and optimize laser cutting operations. [16][17][18][19] In particular, the Taguchi approach has proved very useful to offer an empirical and simple methodology to evaluate the optimal laser parameter settings and, hence, to ensure an appropriate cut quality. 20,21 In this study, the effects of pulsed CO 2 laser cutting parameters on the cut edge quality of 1.5-mm-thick TWIP steel sheets have been investigated through experimental tests.…”

Section: Introductionmentioning

confidence: 99%

Cut quality assessment of CO₂ laser cutting of twinning-induced plasticity steel sheets

Spena

Maddis

Lombardi

2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this study, the effects of the main process parameters involved in CO2 laser cutting of 1.5-mm twinning-induced plasticity steel sheets have been investigated by means of experimental tests. The quality of the cut edges of the sheets was evaluated by analyzing the kerf width, kerf deviation, roughness of the cut surfaces, and dross attachment. The process parameters used were the laser power, cutting speed, oxygen pressure, and pulse frequency of the CO2 laser beam. The optimal settings of the process parameters were predicted using the Taguchi parameter design approach with an L27(313) orthogonal array and calculating the average effect of both the laser parameters and the signal-to-noise ratios. Analysis of variance was performed to evaluate the statistical significance and the contribution of the laser process parameters to the examined kerf features and roughness. On the basis of the Taguchi approach, the predicted optimal settings of the process parameters were verified through confirmation tests. The results show that the selected process parameters, as well as their interactions, can have a remarkable effect on the cutting quality of twinning-induced plasticity steel sheets. The laser power is the main process parameter that affects the kerf width on both sheet sides, while the pulse frequency and its interaction with the laser power are the main factors that influence the kerf deviation, followed by the cutting speed. The roughness of the cut surfaces is mainly affected by the oxygen pressure and the interaction between laser power and cutting speed. Dross attachment was primarily observed in the specimens cut with high laser power and low cutting speed.

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Section: Introductionmentioning

confidence: 99%

Cut quality assessment of CO₂ laser cutting of twinning-induced plasticity steel sheets

Spena

Maddis

Lombardi

2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…Numerous recent experimental investigations have focused on the analysis of the resulting kerf geometrical characteristics including kerf width [3], kerf perpendicularity [4], kerf deviation [5], kerf angle [6], dimensional accuracy [7], and dross formation [8]. The analyses of cut surface quality characteristics, such as surface roughness [1,3], striations [9], pittings [10], and boundary layer separation [11], have attracted the attention of numerous researchers. The physical-chemical characteristics of the material in the surface layer of the cut, such as the width of heat-affected zone [8] and micro-hardness [12], have also been studied.…”

Section: Introductionmentioning

confidence: 99%

Application of a Robust Decision-Making Rule for Comprehensive Assessment of Laser Cutting Conditions and Performance

et al. 2022

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Laser cutting parameters synergistically affect, although in different quantitative and qualitative manners, multiple process performances, such as the resulting cut quality characteristics, material removal rate, cutting time, and costs, and the determination of the most appropriate laser cutting conditions for a given application is of prime importance. Given the existence of multiple mutually opposite performances, assessment and laser cutting conditions and performance can be considered a multiple-criteria decision-making (MCDM) problem. In order to overcome the possible inconsistency of rankings determined by different MCDM methods while solving the same decision-making problem, the present study promotes a novel methodology for the assessment and selection of laser cutting conditions by developing a robust decision-making rule (RDMR) that combines different decision-making rules from six MCDM methods and Taguchi’s principles of robust design. In order to illustrate the application of the proposed methodology, CO2 laser cutting in a stainless-steel experiment, based on the use of the Box–Behnken design, was conducted. On the basis of the experimental results, a comprehensive laser cutting MCDM model was developed with seven criteria related to cut quality (i.e., kerf geometry and cut surface), productivity, variable costs, and environmental aspects. It was observed that there was no laser cutting condition that could be considered as the best regime with respect to the different laser cutting process performances. Kendall’s and Spearman’s rank correlation coefficients indicated a certain level of disagreement among the resulting rankings of the laser cutting conditions produced by the considered MCDM methods, whereas the application of the proposed RDMR ensured the highest level of ranking consistency. Some possibilities for modeling of RDMR and its further use for the assessment of arbitrarily chosen laser cutting conditions and the use of the derived model to perform sensitivity analysis for determining the most influential laser cutting parameters are also discussed and addressed. It was observed that laser cutting parameters in different laser cutting conditions may have a variable effect on the resulting overall process performances. The comparison of the obtained results and the results determined by classical desirability-based multi-objective optimization revealed that there exists substantial agreement between the most preferable and least preferable laser cutting conditions, thus justifying the applied methodology.

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“…The laser cutting of metals is one of the most common applications of laser material processing in industries and research. [11][12][13][14][15][16] A substantial amount of literature is present for cutting of various metals like steel, [17][18][19] titanium, 20,21 aluminium 22,23 and other metals. Past research studies helped in applying the laser cutting process for metal foams to enhance its applicability in various other fields.…”

Section: Introductionmentioning

confidence: 99%

Thermal and morphological analysis of the interaction effect of different assist gases with gas-filled closed-cell aluminium foam during laser cutting process

Raza

Datta

Saha

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Closed-cell aluminium foam, a porous structure, is effectively used for insulation, structural applications, packaging and filtering. Cutting of aluminium foam with the help of fibre laser is an efficient method due to the inherent advantages of fibre laser. Laser cutting of aluminium foam was carried out using a 2-kW fibre laser system for varying process parameters and different assist gas environments. Use of different foaming agents results in the generation of gas-filled pores. During the laser cutting process, the interaction of these gas-filled pores with assist gas results in in-situ reactions, generating different kerf quality. This interaction effect of foam cutting was reported using optical, metallurgical and thermal analysis. Thermal cycles were recorded to understand the occurrence of different in-situ reactions. From the temperature signal for different assist gases, oxygen showed the highest temperature, followed by nitrogen and argon. Argon assist gas gave minimum kerf width, while nitrogen assist gas produced minimum dross. Elemental and phase analysis showed the presence of new compounds and intermetallics in the cut section that stipulated the occurrence of in-situ reactions during the cutting process. The internal pore surface showed the presence of spatter in case of oxygen, while nitrogen and argon gas environment showed relatively less pore-clogging.

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Cutting Parameters for the Reduction in Material Degradation in the Laser Cutting of Advanced High-Strength Steels

Cited by 5 publications

References 12 publications

Cut quality assessment of CO₂ laser cutting of twinning-induced plasticity steel sheets

Cut quality assessment of CO₂ laser cutting of twinning-induced plasticity steel sheets

Application of a Robust Decision-Making Rule for Comprehensive Assessment of Laser Cutting Conditions and Performance

Thermal and morphological analysis of the interaction effect of different assist gases with gas-filled closed-cell aluminium foam during laser cutting process

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Cutting Parameters for the Reduction in Material Degradation in the Laser Cutting of Advanced High-Strength Steels

Cited by 5 publications

References 12 publications

Cut quality assessment of CO2 laser cutting of twinning-induced plasticity steel sheets

Cut quality assessment of CO2 laser cutting of twinning-induced plasticity steel sheets

Application of a Robust Decision-Making Rule for Comprehensive Assessment of Laser Cutting Conditions and Performance

Thermal and morphological analysis of the interaction effect of different assist gases with gas-filled closed-cell aluminium foam during laser cutting process

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Cut quality assessment of CO₂ laser cutting of twinning-induced plasticity steel sheets

Cut quality assessment of CO₂ laser cutting of twinning-induced plasticity steel sheets