Processing technology and experimental analysis of gas-assisted laser cut micro thin wood

Abstract

Unsupported combustion nitrogen (N2) and flame-retardant helium (He) were used to facilitate laser-cutting of cherry wood, and the effects of process parameters, gas flow, and gas reactivity on the surface quality of thin wood were studied. Using identical processing parameters, the cherry wood was laser-cut with and without the added gases. Through comparing the cutting width, heat affected zone (HAZ), and surface burning conditions under different gas-assistance conditions, the influence of the added gases on the gasification and combustion of cherry wood was analyzed. When N2 gas was used, the cutting width was less than that of laser direct cutting, but the surface of the burning area did not remarkably improve. Under the same conditions, when He gas was added, the burning areas on both sides of the kerf were remarkably reduced and the consistency of kerf was good. This indicated that He gas had good oxygen isolation and flame-retardant effects. The surface of the kerf was observed with a scanning electron microscope, and addition of He gas remarkably improved the burning that occurred when cutting kerf. This study combined gas processing and laser technology, and it provided technical references for reducing post treatment improving the surface quality of laser-processed wood.

Research of computerized numerical control laser processing qualities of some wood species used ın the furniture industry

“…The directions of the focal point, the feed rate, the gas blast support system and the effects of the workpiece thickness, material density and moisture content (Kubovsky et al 2020), the cutting speed of the laser power for laser processing and the number of rings per year, the cutting notch at the upper and lower points of the notch width. effect (Teivonen 2016), determination of laser engraving properties of some wood and wood-based composite materials using different laser power and speed combinations (Xu et al 2017), power, speed and nozzle height parameters in laser cutting, bamboo tree cutting in the vertical and parallel directions to the fibers width and depth (Eltawahni et al 2011), power, speed and nozzle height parameters in laser cutting, different thickness The effect of cutting fiberboard material on the kerf width (Liu et al 2020), the effects of cutting thin wood materials with or without gas support on laser cutting at different powers and speeds (Açık and Tutuş 2023), the processing performance of different speciess of wood materials in terms of laser cutting depth (Ürgüplü and Köksal 2015) research has been done on the subject.…”

Computer-aided methods for furniture decoration with traditional motifs of textile heritage

“…Different image conversion methods and colour image reproduction in burned wood surface were used to analyze the colour shades obtained through pyrography with various intensities of laser beam [2]. Apart from studies of aesthetics and colour reproduction, investigation on cutting width, processed surface quality, heat affected zone and wood surface burning were also conducted by researchers [3], and a mathematical relation between wood surface roughness and laser parameters have been determined [4]. Laser beam focal length, cutting speed and power are the important parameters to be IOP Publishing doi:10.1088/1757-899X/1235/1/012041 2 considered not only for laser engraving, but also for laser cutting of wood and wooden based materials, such as plywood [5].…”