Results 1 to 10 of about 1,906,169 (166)

Correlation between the spatters and evaporation vapor on the front keyhole wall during fiber laser keyhole welding

open access: yesJournal of Materials Research and Technology, 2020
Severe spattering is one of the common problems during fiber laser keyhole welding. In this study, the correlation between the spatter formation and laser-induced evaporation vapor on the front keyhole wall (FKW) was studied by changing the welding speed
Gaolei Zhang   +4 more
doaj   +3 more sources

Research on fiber laser welding formation, microstructure, and mechanical properties of 7.5 mm 304 stainless steel

open access: yesJournal of Materials Research and Technology, 2023
304 austenitic stainless steel with a thickness of 7.5 mm was welded by high-power fiber laser welding. The effects of main welding parameters, including laser power, welding speed, and defocusing amount, on weld formation were studied in detail.
Peikang Tao   +3 more
doaj   +3 more sources

Laser Welding of Fiber and Quartz Glass Ferrule

open access: yesMicromachines, 2023
Optical fiber sensors fabricated by bonding have several limitations. To address these limitations, a CO2 laser welding process for an optical fiber and quartz glass ferrule is proposed in this study.
Wenhua Wang
doaj   +1 more source

Multi-stage keyhole evolution in fiber laser welding: An experimental study and theoretical analysis

open access: yesResults in Physics, 2021
Laser welding with high beam intensity generates a metal vapor, which partially displaces the metal melt, forming a narrow keyhole-shaped fusion zone. This study conducted theoretical analysis of the keyhole formation processes within fiber laser welding,
Shihui Guo   +4 more
doaj   +1 more source

Relationship between Microstructure and Corrodibility of Local Dry Underwater Laser Welded 304 Stainless Steel

open access: yesMetals, 2022
To understand the relationship between microstructure and corrosion, in this study, underwater bead-on-plate laser welding was compared with the in-air laser welding of 10-mm-thick 304 stainless steel plates at different laser powers (2, 4, and 6 kW ...
Danbi Song   +3 more
doaj   +1 more source

Parametric Optimization of Laser Conduction Welding between Stainless Steel 316 and Polyethylene Terephthalate Using Taguchi Method [PDF]

open access: yesEngineering and Technology Journal, 2022
A pulsed Nd:YAG laser with a fiber optic delivery system was used to accomplish a dissimilar joining of 316 stainless steel (SUS316) to polyethylene terephthalate (PET).
Maraw Khioon   +2 more
doaj   +1 more source

Effects of Beam Shape on the Microstructures and Mechanical Properties during Thin-Foil Laser Welding

open access: yesMetals, 2023
In this study, a fiber laser at a wavelength of 1070 nm with different beam shapes (spot, dough-nut, and spot-wobble) was used to weld thin 316 L stainless steel foils.
Danbi Song   +4 more
doaj   +1 more source

A Study on Cross-Shaped Structure of Invar Material Using Cold Wire Laser Fillet Welding (PART I: Feasibility Study for Weldability)

open access: yesMetals, 2020
With the need for eco-friendly energy increasing rapidly due to global environmental issues, there is a rapidly increasing demand for liquefied natural gas (LNG). LNG is liquefied at minus 163 degrees Celsius, and its volume decreases to 1/600, giving it
Du-Song Kim   +4 more
doaj   +1 more source

Fiber laser technologies for photoacoustic microscopy

open access: yesVisual Computing for Industry, Biomedicine, and Art, 2021
Fiber laser technology has experienced a rapid growth over the past decade owing to increased applications in precision measurement and optical testing, medical care, and industrial applications, including laser welding, cleaning, and manufacturing.
Long Jin, Yizhi Liang
doaj   +1 more source

Mechanisms for Improvement of Weld Appearance in Autogenous Fiber Laser Welding of Thick Stainless Steels

open access: yesMetals, 2018
High-power fiber laser welding is an efficient and effective way to produce heavy section structures. However, there is a significant challenge in producing the welds with free of imperfections such as nail-head-shaped welds, spatters, and root sagging ...
Mingjun Zhang   +4 more
doaj   +1 more source

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