Underwater cutting of 50 and 60 mm thick stainless steel plates using a 6-kW fiber laser for dismantling nuclear facilities

Shin, Jae Sung; Oh, Seung-Min; Park, Hyunmin; Kim, Taek‐Soo; Lee, Lim; Chung, Chin-Man; Lee, Jong‐Hwan

doi:10.1016/j.optlastec.2019.02.005

Cited by 33 publications

(7 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gbordzoe and others conducted laser cutting experiments on carbon nanotubes with different power lasers to explore the impact of laser cutting on the composite structure changes and mechanical properties of carbon nanotubes, thereby obtaining the optimal process parameters for laser cutting carbon nanotubes [3]. Jae Sung Shin studied the cutting of stainless steel plates with thicknesses of 10-60 mm using a short focal length head and high-power fiber laser to assess its application in nuclear decommissioning [4]. Shi Yaochen and others used a YAG laser to conduct cutting tests on 1 mm thick stainless steel plates, obtaining the 规律 of influence of laser parameters on the width of the cut [5].…”

Section: Introductionmentioning

confidence: 99%

Research on rescue breaking of Q235 steel plate by laser cutting

Qianzhe,

Liu

2024

Preprint

View full text Add to dashboard Cite

Imidst the rapid development of society and economy, we are inevitably confronted with the recurrent challenges of accidents and disasters. However, the continuous advancement in science and technology, particularly the breakthroughs in the field of laser technology, has provided us with robust support to tackle these challenges. Modern laser technology, acclaimed as the magical "sword" capable of effortlessly "cutting iron like mud," has demonstrated unparalleled efficacy in the domain of rescue and demolition. Its precise and swift cutting capabilities have significantly reduced the risk of casualties in rescue operations, shortened the critical time required for demolition tasks, and greatly enhanced the efficiency and precision of the work. The application of this technology not only highlights the immense potential of technological innovation but also offers invaluable support and assurance for our rescue efforts in emergency situations. To explore the application of laser cutting technology in rescue and demolition, this paper focuses on Q235 steel plates with thicknesses of 8mm and 15mm, conducting laser cutting experiments with a fiber laser at a long distance to investigate its suitability for rescue and demolition. The experimental results indicate that the optimal cutting effects are achieved when the distance between the laser head and the workpiece is 10m with a cutting speed of 2.00mm/s and a laser power of 10kW, and when the distance is 13m with a cutting speed of 2.25mm/s and a laser power of 13kW. Appropriately selecting the cutting speed and laser power is crucial for enhancing the surface quality of the cut on Q235 steel plates and reducing the occurrence of root slag, which is essential to meet the demands of the rescue and demolition field.

show abstract

Section: Introductionmentioning

confidence: 99%

Research on rescue breaking of Q235 steel plate by laser cutting

Qianzhe,

Liu

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Nikolic et al [21] used an adaptive neuro fuzzy inference system to improve the forecast of the water-jet assisted underwater laser cutting parameters. Stainless steel up to 60 mm in thickness was cut by laser in water using a continuous ytterbium fibre laser according to Shin et al [22]. Very good results in terms of efficiency and of secondary waste with applicability for dismantling nuclear facilities have been obtained.…”

Section: Introductionmentioning

confidence: 99%

Functional Surfaces via Laser Processing in Nickel Acetate Solution

et al. 2023

View full text Add to dashboard Cite

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.

show abstract

“…Feng et al [ 15 ] used underwater laser micro-milling technology to successfully process a microchannel with a width of 200 μm, a depth of 700 μm and a bottom roughness of 1 μm on FG-Al substrates without thermal effects. Shin et al [ 16 ] successfully performed underwater fiber laser cutting for 50 and 60 mm thick stainless steel plates and the width of the cut was very narrow. Charee et al [ 17 ] studied the influence of water temperature on the width and depth of the groove in the underwater nanosecond pulse laser processing of monocrystalline silicon.…”

Section: Introductionmentioning

confidence: 99%

Effects of Laser Machining Aluminum Alloy in Different Media

Huang

Tang

et al. 2022

Micromachines

View full text Add to dashboard Cite

To study the effects of aluminum alloys processed by a laser in air and water and at different water velocities, corresponding experiments were conducted and the impacting effects of different water velocities on the surface of the workpiece were simulated, respectively. The results show that when laser processing aluminum alloy materials in air, there is more slag and a recondensation layer on both sides of the groove, the heat-affected zone is larger and the surface processing quality is poor. When laser processing aluminum alloy materials in water, the processing quality is improved. With the increase in water velocity, the impacting and cooling effect is enhanced, the groove depth and groove width show a trend of first increasing and then decreasing, the slag and recondensation layer on both sides of the groove are reduced, the heat-affected zone is reduced and the processing quality of the groove is improved. When the water velocity reaches 30 m/s, a better groove can be obtained. Laser processing aluminum alloy materials in water can obtain better processing quality than laser processing in air.

show abstract

Underwater cutting of 50 and 60 mm thick stainless steel plates using a 6-kW fiber laser for dismantling nuclear facilities

Cited by 33 publications

References 21 publications

Research on rescue breaking of Q235 steel plate by laser cutting

Research on rescue breaking of Q235 steel plate by laser cutting

Functional Surfaces via Laser Processing in Nickel Acetate Solution

Effects of Laser Machining Aluminum Alloy in Different Media

Contact Info

Product

Resources

About

Underwater cutting of 50 and 60 mm thick stainless steel plates using a 6-kW fiber laser for dismantling nuclear facilities

Cited by 33 publications

References 21 publications

Research on rescue breaking of Q235 steel plate by laser cutting

Research on rescue breaking of Q235 steel plate by laser cutting

Functional Surfaces via Laser Processing in Nickel Acetate Solution

Effects of Laser Machining Aluminum Alloy in Different Media

Contact Info

Product

Resources

About

Underwater cutting of 50 and 60 mm thick stainless steel plates using a 6-kW fiber laser for dismantling nuclear facilities