Effect of CO2 laser cutting process parameters on edge quality and operating cost of AISI316L

2012 ◽  
Vol 44 (4) ◽  
pp. 1068-1082 ◽  
Author(s):  
H.A. Eltawahni ◽  
M. Hagino ◽  
K.Y. Benyounis ◽  
T. Inoue ◽  
A.G. Olabi
Keyword(s):  
Co2 Laser ◽  
Process Parameters ◽  
Laser Cutting ◽  
Operating Cost ◽  
Cutting Process ◽  
Edge Quality

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.

Optimization of Laser Beam Cutting Process Parameters of Austenitic Materials

2015 ◽  
Vol 1111 ◽  
pp. 235-239 ◽  
Author(s):  
Sanja Petronić ◽  
Biljana Grujic ◽  
Dubravka Milovanovic ◽  
Radomir Jovicic
Keyword(s):  
Process Parameters ◽  
Laser Cutting ◽  
Elevated Pressure ◽  
Cutting Process ◽  
High Mechanical Strength ◽  
Complex Shapes ◽  
Manufactured Products ◽  
Modern Manufacturing ◽  
Design Requirements ◽  
Cutting Processes

Austenitic materials have high demand in modern manufacturing industries due to their improved technological characteristics such as high mechanical strength and hardness, corrosion resistance, heat resistance and wear resistance. Some applications of austenitic materials include elevated pressure and temperature, and require stringent design requirements and close tolerances in manufactured products. Laser cutting is one of the non-conventional cutting processes, used to obtain complex shapes and geometries. In this paper, laser cutting was performed on austenitic material. The laser cutting process parameters are varied with the aim to obtain the optimal process parameters. The geometric and metallurgical characteristics of the cut parts are investigated and compared to the conventional cutting methods of austenitic materials.

scholarly journals OPTIMIZATION OF CO2 LASER PARAMETERS FOR WOOD CUTTIOPTIMIZATION OF CO2 LASER PARAMETERS FOR WOOD CUTTING

2017 ◽  
Vol 3 ◽  
pp. 168
Author(s):  
Lyubomir Lazov ◽  
Pavels Narica ◽  
Janis Valiniks ◽  
Antons Pacejs ◽  
Hristina Deneva ◽  
...  
Keyword(s):  
Co2 Laser ◽  
Laser Cutting ◽  
Continuous Wave ◽  
Laser System ◽  
Cutting Speed ◽  
Cutting Process ◽  
Machinery Construction ◽  
Continuous Wave Output Power ◽  
Laser Parameters ◽  
Furniture Manufacturing

By taking advantage of the best characteristics of wood, modern production methods can offer hard wearing and ecological solutions in industrial construction, house building, machinery construction, furniture manufacturing, transport and many other industries. Laser cutting process is an alternative choice to prepare the final shape of wood parts. Materials like wood have good laser light absorption of wavelength 10600 nm. In this paper a CO2 laser system with a maximum continuous-wave output power of 150 W is described and used in studying laser cutting process of wood materials. Cut depth is evaluated with variation of values of laser power and cutting speed. Additionally, optimal values of parameters for laser cutting of different wood plate thicknesses are determined and graphs are created showing the results.

scholarly journals Post-Processing of FDM 3D-Printed Polylactic Acid Parts by Laser Beam Cutting

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 550 ◽  
Author(s):  
Mahmoud Moradi ◽  
Mojtaba Karami Moghadam ◽  
Mahmoud Shamsborhan ◽  
Mahdi Bodaghi ◽  
Hamid Falavandi
Keyword(s):  
Process Parameters ◽  
Focal Plane ◽  
Laser Cutting ◽  
Cutting Speed ◽  
Cutting Process ◽  
Poly Lactic Acid ◽  
Regression Equations ◽  
Post Processing ◽  
Fused Deposition ◽  
3D Printed

In this paper, the post-processing of 3D-printed poly lactic acid (PLA) parts is investigated. Workpieces are manufactured by fused deposition modeling (FDM) 3D printing, while they may have defects in some areas such as edges. A post-processing is introduced here for 3D-printed samples by low power CO2 laser. The thickness of the FDM samples are 3.2 mm and printed by optimum conditions. Effects of process parameters such as focal plane position (−3.2–3.2 mm), laser power (20–40 W), and laser cutting speed (1–13 mm/s) are examined based on the design of experiments (DOE). Geometrical features of the kerf; top and bottom kerf; taper; ratio of top to the bottom kerf are considered as output responses. An analysis of the experimental results by statistical software is conducted to survey the effects of process parameters and to obtain regression equations. By optimizing of the laser cutting process; an appropriate kerf quality is obtained and also optimum input parameters are suggested. Experimental verification tests show a good agreement between empirical results and statistical predictions. The best optimum sample with 1.19 mm/s cutting speed, 36.49 W power and 0.53 mm focal plane position shows excellent physical features after the laser cutting process when 276.9 μm top and 261.5 μm bottom kerf width is cut by laser.

Laserbasierter Konturbeschnitt von CFK-Strukturbauteilen*/Remote laser cutting of structural CFRP

2016 ◽  
Vol 106 (06) ◽  
pp. 422-427
Author(s):  
J. Stock ◽  
M. F. Prof. Zäh
Keyword(s):  
Laser Radiation ◽  
Structural Properties ◽  
Laser Cutting ◽  
Cutting Process ◽  
Abrasive Waterjet ◽  
Outer Contour ◽  
High Productivity ◽  
Eine Hohe ◽  
Cutting Energy ◽  
Edge Quality

Bei der Herstellung schalenartiger Bauteile aus kohlenstofffaserverstärktem Kunststoff (CFK) wird die Bauteilaußenkontur durch einen Trennprozess besäumt. Alternativ zu den etablierten Trennverfahren wie Fräsen oder Wasserstrahltrennen besteht Bedarf an neuen sowie produktiven Prozessen. Diese sollen eine hohe Kantenqualität ohne durch Werkzeugverschleiß bedingte Schwankungen darstellen können. Eine solche Alternative kann in Zukunft das Remote-Laserstrahltrennen sein. Für eine hohe Qualität der Schnittkante ist zunächst die Absorption der Laserstrahlung im Werkstoff sicherzustellen. Darüber hinaus ist der Energieeintrag derart zu gestalten, dass die geforderten optischen und strukturellen Eigenschaften erreicht werden.   For the production of thin CFRP-parts, the outer contour needs to be trimmed by a cutting process such as milling or abrasive waterjet cutting. In this context, the demand for a wear free tool is high. An alternative process which allows for a constantly high edge quality and a high productivity is remote laser cutting. Therefore, the absorption of the laser radiation in the material needs to be high. The required optical and structural properties of the edge can be controlled by a suitable distribution of the cutting energy.

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