Recent Trends of the Material Processing Technology with Laser - ICALEO 2014 Review -

Lee, Mokyoung

doi:10.5781/jwj.2015.33.4.7

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…Due to the characteristics of high laser intensity, good monochromaticity and good directivity, it is widely used in wood manufacturing industry, resulting in technologies such as rapid processing, tomography and nondestructive testing [5,6]. Combined with computer control system and automatic equipment, laser beam profiling cutting is employed to achieve the forming processing of parts [7,8], which could effectively make up for the tool wear, size limitation, complex contour of parts in traditional cutting methods. The influence of self-stability and other constraints on the machining process, especially for thin plates and small-size parts, has better flexibility and adaptability [9,10].…”

Section: Introductionmentioning

confidence: 99%

Research on the wood processing method of helium-assisted laser process

et al. 2022

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In order to promote the development of environmental protection, and the usage rate of green energy utilization, a progressive, innovative laser process method employing helium assisted is proposed, which optimizes the joint cutting process under the same energy consumption. This method provides a new idea for the wood process industry. The uniqueness of this paper establishes a mathematical model to address the diffusion of helium injection and the heat transfer of the laser beam on the processed surface. From the results, it can be exhibited that the oxygen concentration reduces when the helium is injected on the processed surface. The helium could destroy the combustion-supporting conditions and decrease the combustion zone of the processed joint cutting. Thus, the carbonized area of the processed surface is reduced, which could effectively enhance the processing quality of joint cutting. Notably, the helium with injection speed forms a sweeping effect on the processed surface, which could remove parts of the carbonized particles and residues on the processed surface, as well as improve the processing quality. Comparing the traditional laser process and helium-assisted laser process, the gas-assisted laser process owns higher process quality than that of traditional laser processing and cutting. In detail, it features the advantages of smaller joint cutting width, lower surface roughness and smoother surface. Eventually, a mathematical model based on the response surface method with the evaluation criteria of the kerf width, kerf depth, and surface roughness is established to analyze the interaction of laser power, cutting speed and inert gas pressure on the response factors. Comparing the error between the predicted and experimental measurement value, and the optimized process parameters could be acquired. In this paper, the helium-assisted laser process method proposed is meaningful and encouraging, which not only obtains better processing quality, but also provides a guide for developing green industry.

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