Laser Cutting of Thin Aluminum and Silicon Alloy: Influence of Laser Power on Kerf Width

2012 ◽  
Vol 445 ◽  
pp. 442-447 ◽  
Author(s):  
Bekir Sami Yilbas ◽  
S.S. Akhtar ◽  
E. Bayraktar ◽  
Zuhair M. Gasem
Keyword(s):  
Laser Power ◽  
Laser Cutting ◽  
Kerf Width ◽  
Silicon Alloy ◽  
Thin Aluminum

EXPERIMENTAL EVALUATION OF CO2 LASER CUTTING QUALITY OF UHSS USING OXYGEN AS AN ASSISTED GAS

2016 ◽  
Vol 78 (7) ◽  
Author(s):  
Abdul Fattah Mohamad Tahir ◽  
Ahmad Razelan Rashid
Keyword(s):  
Co2 Laser ◽  
High Strength Steel ◽  
Laser Power ◽  
Laser Cutting ◽  
Cutting Speed ◽  
High Strength ◽  
Gas Pressure ◽  
Kerf Width ◽  
Boron Steel ◽  
Major Factors

Development of new material known as Ultra High Strength Steel (UHSS) able to improve the vehicle mass thus reflecting better fuel consumption. Transformation into high strength steel has been a significant drawback in trimming the UHSS into its final shape thus laser cutting process appeared to be the solution. This study emphasizes the relationship between Carbon Dioxide (CO2) laser cutting input parameters on 22MnB5 boron steel focusing on the kerf width formation and Heat Affected Zone (HAZ). Experimental research with variation of laser power, cutting speed and assisted gas pressure were executed to evaluate the responses. Metrological and metallographic evaluation of the responses were made on the outputs that are the kerf width formation and HAZ.  Positive correlation for power and negative interaction for cutting speed were found as the major factors on formation of the kerf. For the HAZ formation, thicker HAZ were formed as bigger laser power were applied to the material. Cutting speed and gas pressure does not greatly influence the HAZ formation for 22MnB5 boron steel.

CO2 laser cutting: Kerf width variation during cutting

2005 ◽  
Vol 219 (8) ◽  
pp. 571-577 ◽  
Author(s):  
I Uslan
Keyword(s):  
Mild Steel ◽  
Product Quality ◽  
Laser Power ◽  
Laser Cutting ◽  
Cutting Speed ◽  
Size Variation ◽  
Kerf Width ◽  
Parameter Analysis ◽  
Workpiece Surface ◽  
Power Intensity

The kerf width size variation along a laser-cut section lowers the end product quality significantly. In the present study, CO2 laser cutting of mild steel is considered and the influence of laser power and cutting speed variations on the kerf width size is examined. A lump parameter analysis is introduced when predicting the kerf width size and an experiment is conducted to measure the kerf size and its variation during the cutting process. It is found that the power intensity at the workpiece surface influences significantly the kerf width size. The variation in the power intensity results in considerable variation in the kerf size during the cutting, which is more pronounced at lower intensities.

Simulation of Laser Cutting on Functionally Graded Material Used in Aviation Industry

2019 ◽  
Author(s):  
Subha Nath ◽  
Apurba Das ◽  
Kazuaki Inaba ◽  
Amit Karmakar
Keyword(s):  
Thermal Stress ◽  
Laser Power ◽  
Laser Cutting ◽  
Scanning Speed ◽  
Functionally Graded ◽  
Kerf Width ◽  
Aviation Industry ◽  
Depth Of Cut ◽  
Work Piece ◽  
Finite Element Software

Abstract Functionally graded materials (FGMs) are widely used in engineering applications for the advantages offered by the properties of materials in combination. It is a special type of composite material which is inhomogeneous (micro-scopically). Laser cutting offers advantages while cutting these materials compared to traditional cutting methods. The objective of this work is to investigate numerically the effect of process parameters such as laser power and scanning speed on kerf width, depth of cut and thermal stress. Gaussian heat source, representing the laser beam, is applied along a straight line path through the middle of the work piece. The FGM considered in this work material mainly consists of a FGM made of nickel and stainless steel (AISI 304). The work piece is assumed to be symmetric. In this simulation finite element software COMSOL MULTIPHYSICS is used to simulate the thermo-mechanical model. The model is meshed with nonuniform pattern tri-angular mesh. It is observed from the results of numerical simulation that with the increase of laser power the width and depth of the cut has increased. The cut has a very narrow kerf width with increasing scanning speed leading to considerable saving in material. The variation in thermal stress is observed on the material with the considered parameters.

Laser Cutting of Thin Aluminum and Silicon Alloy: Influence of Laser Power on Kerf Width

2012 ◽  
Vol 445 ◽  
pp. 442-447 ◽  
Author(s):  
Bekir Sami Yilbas ◽  
S.S. Akhtar ◽  
E. Bayraktar ◽  
Zuhair M. Gasem
Keyword(s):  
Output Power ◽  
Laser Cutting ◽  
Size Variation ◽  
Kerf Width ◽  
Parameter Analysis ◽  
Laser Output ◽  
Laser Output Power ◽  
Thin Aluminum ◽  
Silicon Sheet ◽  
Aluminum Silicon

Laser cutting of aluminum-silicon sheet is carried out. The influence of laser output power on the kerf width is examined in details. The lump parameter analysis is introduced to predict the kerf width size. The percentage of kerf width size variation due to different laser output power levels is formulated. It is found that the kerf width size predicted agrees well with the experimental data. The influence of laser output power on the kerf width size is more pronounced for power levels 350 W. Keywords: laser cutting, aluminum-silicon, kerf width

scholarly journals Analysis of neodymium-doped yttrium-aluminum-garnet laser and experimental prospects for cutting micro-thin black walnut veneers in industry

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 2416-2432
Author(s):  
Bakary S. Doumbia ◽  
Chunmei Yang ◽  
Yan Ma ◽  
Ting Jiang ◽  
Xiang Li ◽  
...  
Keyword(s):  
Process Parameters ◽  
Laser Power ◽  
Laser Cutting ◽  
Yttrium Aluminum Garnet ◽  
Cutting Speed ◽  
Black Walnut ◽  
Kerf Width ◽  
Machining Parameters ◽  
Protection Measures ◽  
Cut Surface

By structurally and practically analyzing the use of Nd: YAG laser for cutting black walnut veneer, this study considered practical and environmental concerns regarding the global warming protection measures. A numerical model of laser wood veneer cutting was based on the relation between process parameters and the material thickness. A pulsed Nd: YAG was used to cut black walnut veneer of 0.3 mm thickness under different machining conditions regarding laser power and cutting speed to study the cut kerf width. An analysis of variance was conducted to test the significance of machining parameters. The parameters studied were laser power, cutting speed, kerf width, cut surface, safety, and eco-friendliness. The results showed that the kerf width decreased significantly with increased cut speed and, inversely, by laser output power. An efficient cut with a narrow kerf, clean and smooth, with less burn, was possible at laser cutting speeds of 2.5, 5.0, and 5.5 mm/s with kerf widths of 0.544, 0.69, 0.62 mm, respectively. As multiple factors affect the micro-thin wood laser cutting process, finding the optimal process parameters is crucial for successful machining with no burn effect.

EXPERIMENTAL AND STATISTICAL INVESTIGATION OF THE EFFECTS OF CUTTING PARAMETERS ON KERF QUALITY AND SURFACE ROUGHNESS IN LASER CUTTING OF Al 5083 ALLOY

2021 ◽  
pp. 2150093
Author(s):  
BARIŞ ÖZLÜ
Keyword(s):  
Surface Roughness ◽  
Laser Power ◽  
Laser Cutting ◽  
Cutting Parameters ◽  
Statistical Investigation ◽  
Kerf Width ◽  
Processing Parameter ◽  
Relationship Analysis ◽  
Al 5083 Alloy ◽  
Parameter Values

In this study, the effect of cutting parameters on kerf quality and surface roughness in laser cutting of Al 5083 alloyed material was investigated both experimentally and statistically (Taguchi & Gray Taguchi). Experimental design was determined using the Taguchi L[Formula: see text] (21x 3[Formula: see text] orthogonal array. Experiments were carried out by using two different gas pressures (GP) (8 and 10 bar), three different cutting speeds (CS) (3500, 4000 and 4500[Formula: see text]mm[Formula: see text][Formula: see text][Formula: see text]min[Formula: see text] and laser power (P) (2600, 3100 and 3600[Formula: see text]W) in the cutting of Al 5083 alloyed material. As a result of the study, top kerf width (TKW), bottom kerf width (BKW) and average surface roughness (Ra) were measured as output parameter values. Using the measured top and BKW results, kerf taper (KT) was calculated. The lowest values of TKW, BKW, KT and Ra were 2.219[Formula: see text]mm, 2.010[Formula: see text]mm, 0.984∘ and 2.394[Formula: see text][Formula: see text]m, respectively. To determine the optimum values of laser cutting parameters for minimum output parameters, signal-noise (S/N) ratio, variance and regression analysis, validity experiments and GRA methods were used. When S/N ratios were examined, the most ideal cutting parameters were determined as A1B3C1 for TKW and BKW, A2B1C3 for KT and A2B3C3 for Ra. When the variance results were examined, it was determined that the most effective processing parameter for TKW, BKW and KT was at 46.04%, 50.58% and 56.45% CS, respectively, and the most effective processing parameter for Ra was laser power with 46.57%. According to gray relationship analysis, optimum laser cutting parameters for the smallest values of all output parameters were determined as A1B3C1. According to gray relationship analysis, optimum laser cutting parameters for the smallest values of all output parameters were determined as A1B3C1.

EXPERIMENTAL STUDY ON THE CO2 LASER CUTTING OF NOVEL POLYAMIDE 6/FLUOROELASTOMER THERMOPLASTIC ELASTOMERIC BLENDS

2015 ◽  
Vol 88 (1) ◽  
pp. 125-137 ◽  
Author(s):  
Shib Shankar Banerjee ◽  
Anil K. Bhowmick
Keyword(s):  
Low Power ◽  
Co2 Laser ◽  
Process Parameters ◽  
Laser Power ◽  
Laser Cutting ◽  
Manufacturing Industry ◽  
Cutting Speed ◽  
Polyamide 6 ◽  
Thermoplastic Elastomers ◽  
Dynamic Vulcanization

ABSTRACT The application of the low-power CO2 laser-cutting process to fluoroelastomer (FKM), polyamide 6 (PA6), PA6/FKM thermoplastic elastomers (TPEs), and their thermoplastic vulcanizate (TPV) is reported. The main laser process parameters studied were laser power, cutting speed, and material thickness. The value of the top and bottom widths of the slit that were formed during laser cutting (kerf width), melted transverse area, and melted volume per unit time were measured and analyzed. Interestingly, TPE showed a smaller melted area and melted volume per unit time when compared with those values with PA6. Dynamic vulcanization further decreased these values. For example, the melted areas of PA6 and TPE were 510 × 10−3 mm2 and 305 × 10−3 mm2, respectively, which reduced to 238 × 10−3 mm2 for TPV at 40 W laser power. FKM showed the lowest value (melted area of 180 × 10−3 mm2). In addition, the output quality of the cut surface was examined by measuring the root mean square (RMS) roughness of the cut edges and heat-affected zone (HAZ). The obtained results indicated that the dimension of the HAZ and RMS roughness largely decreased in TPE when compared with PA6. For example, the HAZ of PA6 was 700 μm, which decreased to 230 μm for TPE at 40 W laser power. On the other hand, HAZ was nonexistent for FKM. Infrared spectroscopic analysis showed that there was no structural change of TPE or pristine polymers after applying the low-power CO2 laser on the surface of materials. CO2 laser cutting will be a new technique in this industry, and this analysis will assist the manufacturing industry to choose a suitable laser system with exhaustive information of process parameters for cutting or machining of rubber, TPEs, and TPVs.

scholarly journals STUDY OF AUXILIARY GAS PRESSURE ON LASER CUTTING TECHNOLOGY

2017 ◽  
Vol 3 ◽  
pp. 163
Author(s):  
Lyubomir Lazov ◽  
Hristina Deneva ◽  
Erika Teirumnieka
Keyword(s):  
Laser Power ◽  
Laser Cutting ◽  
Sheet Steel ◽  
Cutting Speed ◽  
Major Effect ◽  
Gas Pressure ◽  
Experimental Results ◽  
Focus Position ◽  
Angle Deviation ◽  
Basic Parameters

Two types of electrical sheet steel M250-35A and M530-50A were used to cut by melting with a TruLaser 1030 technological system. It was observed that pressure of auxiliary gas had a major effect on kerf width b and cut angle deviation α. Nitrogen as an assisted gas has been taken. The basic parameters as laser power, cutting speed, focus position were constantly supported and the pressure was changed from 4 bar to 20 bar by step 2 bar. As well as the experimental results of gas pressure on entrance and exit kerf widths, have been analyzed and discussed in this study.

Analysis of Roughness and Heat Affected Zone of Steel Plates Obtained by Laser Cutting

2014 ◽  
Vol 974 ◽  
pp. 169-173 ◽  
Author(s):  
Imed Miraoui ◽  
Mohamed Boujelbene ◽  
Emin Bayraktar
Keyword(s):  
Surface Roughness ◽  
Laser Beam ◽  
Heat Affected Zone ◽  
Laser Power ◽  
Laser Cutting ◽  
Major Effect ◽  
Steel Plates ◽  
Beam Diameter ◽  
Laser Beam Diameter ◽  
Cut Surface

In the present study, high-power CO2 laser cutting of steel plates has been investigated and the effect of the input laser cutting parameters on the cut surface quality is analyzed. The average roughness of the cut surface of the specimens, produced by different laser beam diameter and laser power, were measured by using roughness tester. The scanning electron microscopy SEM is used to record possible metallurgical alterations on the cut edge. The aim of this work is to investigate the effect of laser beam diameter and laser power on the cut surface roughness and on the heat affected zone width HAZ of steel plates obtained by CO2 laser cutting. An overall optimization was applied to find out the optimal cutting setting that would improve the cut surface quality. It was found that laser beam diameter has a negligible effect on surface roughness but laser power had major effect on roughness. The cut surface roughness decreases as laser power increases. Improved surface roughness can be obtained at higher laser power. Also, laser beam diameter and laser power had major effect on HAZ width. It increases as laser power increases.

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