![]() s −1), and number of annual rings (3-11) on the width of the cutting kerf on the top board, on the width of the cutting kerf on the bottom board, on the ratio of the cutting kerf width on the top and bottom of the board, on the width of the heat-affected area on both sides of the cutting kerf (this applies to the top and bottom of the board), and on the degree of charring.The influence of three factors was investigated, namely, the effect of the laser power (100 and 150 W), cutting speed (3, 6, and 9 mm ![]() The goal of this research was to optimize the cutting parameters of spruce wood (Pices abies L.) by a low-power CO 2 laser. The laser cutting of wood and wood composites is widely accepted and used by the wood industry (due to its many advantages compared to, e.g., saw cutting). This article deals with the laser cutting of wood and wood composites. From this present study a guideline for cutting a wide range of Malaysian wood has been outlined. Therelationship between processing parameters and types of wood with different properties were outlinedin terms of optimum cutting conditions, the minimum burnt-effect achievable and the best cut qualityobtained with minimal surface deterioration and acceptable in accuracy. The analyses considered were of the geometric and dimensional accuracy(straight sideline length, diameter of circle, kerf width, and percent over cut), material removal rate,and severity of burns of the matters upon machining with compressed air or any assist gases. The wood properties observed were thickness, density and moisturecontent of the wood. The processing variables taken into investigation were laser power, nozzlestandoffdistance (SOD) or focal point position, nozzle size, assist gas pressure, types of assist gas,cutting speed and delay time. The low power laser machine (Zech Laser model ZL 1010),equipped with a slow flow CO2 laser producing maximum output power of 500 watt on beam mode ofTEM01 is employed. This latest experiment wasperformed on Malaysian light hardwood namely, Nyatoh (Palaquium spp.), Kembang Semangkok(Scaphium spp.), Meranti (Shorea spp.) and normal Plywood using low power carbon dioxide lasermachine with 500 Watt maximum output. Laser cuttingprocess has been found to be reliable in loads of applications, with several advantages over othermechanical means in producing successful cut of even thermally sensitive materials such as wood.Various works which have been conducted to resolve the interaction between laser and wood but anultimate guideline to produce the best cutting results are still undecided. Laser has been used to cut most non-metallic materials very efficiently and successfullybecause these materials are highly absorptive by the CO2 laser wavelength of 10.6m. ![]()
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May 2023
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