High-speed fiber laser cutting of thick stainless steel for dismantling tasks

Shin, Jae Sung; Oh, Seung-Min; Park, Hyunmin; Chung, Chin-Man; Seon, Sangwoo; Kim, Taek‐Soo; Lee, Lim; Choi, Byung-Soon; Moon, Jei‐Kwon

doi:10.1016/j.optlastec.2017.03.040

Cited by 29 publications

(5 citation statements)

References 5 publications

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“…By 1970, laser cutting technology was used in the cutting of titanium rods in aerospace engineering. In recent years, CO2 laser cutters are gaining traction in non-metals such as wood and glass (Shin et al, 2017). Today's laser cutting tools are equipped with high power optics and micropositioning systems that can produce complicated stents as small as 0.002 mm (Madic et al, 2012).…”

Section: Recent Developments In Laser Cuttingmentioning

confidence: 99%

Retrofitting ancient timber glulam mortise & tenon construction joints through computer-aided laser cutting

Zhan

Chen

Yap

et al. 2020

Heliyon

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This study is aimed to rationalise and demonstrate the efficacy of utilising laser cutting technique in the fabrication of glulam mortise & tenon joints in timber frame. Trial-and-error experiments aided by laser cutter were conducted to produce 3D timber mortise & tenon joints models. The two main instruments used were 3D modelling software and the laser cutter TH 1390/6090. Plywood was chosen because it could produce smooth and accurate cut edges whereby the surface could remain crack-free, and it could increase stability due to its laminated nature. Google SketchUp was used for modelling and Laser CAD v7.52 was used to transfer the 3D models to the laser cutter because it is compatible with AI, BMP, PLT, DXF and DST templates. Four models were designed and fabricated in which the trial-and-error experiments proved laser cutting could speed up the manufacturing process with superb quality and high uniformity. Precision laser cutting supports easy automation, produces small heat-affected zone, minimises deformity, relatively quiet and produces low amount of waste. The LaserCAD could not process 3D images directly but needed 2D images to be transferred, so layering and unfolding works were therefore needed. This study revealed a significant potential of rapid manufacturability of mortise & tenon joints with high-quality and high-uniformity through computer-aided laser cutting technique for wide applications in the built environment.

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Section: Recent Developments In Laser Cuttingmentioning

confidence: 99%

Retrofitting ancient timber glulam mortise & tenon construction joints through computer-aided laser cutting

Zhan

Chen

Yap

et al. 2020

Heliyon

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“…Manohar et al [9] conducted laser cutting experiments on 25 mm thick steel plate using a 6-KW high power ber laser, and systematically investigated the effect of material composition on the cutting performance of the steel plate. The optimum cutting speed of 6-KW high power ber laser cutting 60 mm and 100 mm was analyzed by Shin et al [10,11]. For both 60 mm and 100 mm steel plates, the optimum cutting speed for carbon steel is less than that for stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Effects of two laser cutting processes on the cutting performance of 50 mm-170 mm thick 20CrNiMo under unassisted blowing conditions

Liao,

Wang,

Zhong

et al. 2023

Preprint

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The kerf size is one of the main factors affecting the efficiency of laser cutting of medium-thick steel under unassisted blowing conditions. In this work, the cutting experiments are conducted to investigate the influence of two different kerf width variation patterns with increasing kerf depth (Case 1 and Case 2) on the cutting performance and cutting efficiency of 50 mm, 80 mm and 170 mm thick 20CrNiMo steel under unassisted blowing conditions by using 10-KW power fiber laser. The same cutting movement speed, defocus amount and cutting scan path are used in the cutting experiments for accurate evaluation of the cutting performance. Qualitative and quantitative analyses of the kerf shape and cutting time are performed to discussion the difference between Case 1 and Case 2. The experiment results indicate that the cutting process of Case 2 is superior to Case 1 in terms of cutting time and kerf morphology. The decrease in cutting time for 50 mm, 80 mm and 170 mm thick specimens by 40%, 57.6% and 56%, respectively. The research provides a reference for further improving the laser cutting efficiency of medium-thickness steel under unassisted blowing conditions.

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“…The laser processing of materials in liquid media is a promising technique which can significantly improve the surface properties of metallic materials, due to a combination of advantages of a liquid media in terms of absorption, confinement, wave transmitting, vaporization and liquid convection effects [1]. Nowadays, in order to overcome the unwanted thermal effects produced by laser processing (i.e., reducing the heat-affected zones), numerous studies are oriented to underwater laser welding [2][3][4], cutting [5,6], cladding [7,8] and peening in liquid media [9]. Laser processing in water is a challenging process due to the numerous parameters and factors that can influence an already complex technology.…”

Section: Introductionmentioning

confidence: 99%

Functional Surfaces via Laser Processing in Nickel Acetate Solution

et al. 2023

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This study presents a novel laser processing technique in a liquid media to enhance the surface mechanical properties of a material, by thermal impact and micro-alloying at the subsurface level. An aqueous solution of nickel acetate (15% wt.) was used as liquid media for laser processing of C45E steel. A pulsed laser TRUMPH Truepulse 556 coupled to a PRECITEC 200 mm focal length optical system, manipulated by a robotic arm, was employed for the under-liquid micro-processing. The study’s novelty lies in the diffusion of nickel in the C45E steel samples, resulting from the addition of nickel acetate to the liquid media. Micro-alloying and phase transformation were achieved up to a 30 µm depth from the surface. The laser micro-processed surface morphology was analysed using optical and scanning electron microscopy. Energy dispersive spectroscopy and X-ray diffraction were used to determine the chemical composition and structural development, respectively. The microstructure refinement was observed, along with the development of nickel-rich compounds at the subsurface level, contributing to an improvement of the micro and nanoscale hardness and elastic modulus (230 GPa). The laser-treated surface exhibited an enhancement of microhardness from 250 to 660 HV0.03 and an improvement of more than 50% in corrosion rate.

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High-speed fiber laser cutting of thick stainless steel for dismantling tasks

Cited by 29 publications

References 5 publications

Retrofitting ancient timber glulam mortise & tenon construction joints through computer-aided laser cutting

Retrofitting ancient timber glulam mortise & tenon construction joints through computer-aided laser cutting

Effects of two laser cutting processes on the cutting performance of 50 mm-170 mm thick 20CrNiMo under unassisted blowing conditions

Functional Surfaces via Laser Processing in Nickel Acetate Solution

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