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Butt welding

About: Butt welding is a research topic. Over the lifetime, 7153 publications have been published within this topic receiving 44467 citations.


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Patent
15 Feb 1941
TL;DR: In this paper, a uniform butt welding of the edges is described, which relates to the welding art and more particularly to the art of welding together in endwise relation successive pieces or lengths of metal sections, the width of which is many times the thickness thereof, such as -metal sheet and strip.
Abstract: This invention relates to the welding art and more particularly to the art of butt welding together in endwise relation successive pieces or lengths of metal sections, the width of which is many times the thickness thereof, such as -metal sheet and strip. The uniform butt welding of the edges...

11 citations

Proceedings ArticleDOI
TL;DR: In this article, the use of a single pulse to generate a quasi continuous weld of several millimeters in length is introduced, which reduces the energy consumption of the workpiece to 25 J by applying a series of about 130 single pulses for the crown-axis combination.
Abstract: The new welding technique 'SHADOW ' is introduced SHADOW means the use of a single pulse to generate a quasi continuous weld of several millimeters in length HET processing time is defined by the pulse duration of the pulsed laser At present, a state-of-the-art laser is capable of a maximum pulse duration of 20 ms The variation of the laser power depend on time is a vital capability of the pulsed laser to adapt the energy deposition into the workpiece Laser beam welds of several watch components were successfully performed Similar metals like crowns and axes made out of stainless steel have been welded using pulsed laser radiation Applying a series of about 130 single pulses for the crown-axis combination the total energy accumulates to 195 J The use of the SHADOW welding technique reduces the energy to 25 J While welding dissimilar metals like stainless steel and bras, the SHADOW welding reduces drastically the contamination as well as the distortion Laser beam welding of copper has a low process reliability due to the high reflection and the high thermal conductivity SHADOW welds of 36 mm length were performed on 250 micrometers thick copper plates with very high reproducibility As a result, a pilot plant for laser beam welding of copper plates has been set up The work to be presented has partly been funded by the European Commission in a project under the contract BRPR-CT-0634

11 citations

Journal ArticleDOI
TL;DR: In this article, the effects of laser power and welding speed on weld geometry and microstructure were investigated through experimentation and simulation, which resulted in viable, defect-free welds.
Abstract: Laser welding of wrought magnesium alloy has been investigated through experimentation and simulation. Laser butt welds and laser lap welds were performed on 2.0 mm thick magnesium alloy AZ31 plates using a 1 kW fiber laser and shielded with argon gas. The effects of laser power and welding speed on weld geometry and microstructure were investigated. Through experimentation, the ranges of operating parameters for laser power and welding speed which resulted in viable, defect-free welds were found and reported. Simulations were carried out to predict the weld pool geometry and resultant microstructure and are shown to be in good agreement with experimental results.Copyright © 2014 by ASME

11 citations

Journal ArticleDOI
TL;DR: In this paper, a numerical simulation model was established to investigate characteristics of keyhole and molten pool during laser butt welding, and a particle filtering method was employed to improve the accuracy of the prediction of the gap position.
Abstract: A numerical simulation model was established to investigate characteristics of keyhole and molten pool during the laser butt welding. The sharp point in front of the keyhole and molten pool revealed the position of the gap, and its deviation in transversal direction between the centroid of the keyhole demonstrated the real-time deviation between the laser beam and real gap. A visual system was designed to capture real-time infrared images of keyhole and molten pool, and the real-time deviation data between the laser beam and gap was extracted from these images. The state and measurement equations of real gap position prediction were developed based on the welding system. The particle filtering (PF) method was employed to improve the accuracy of the prediction of the gap position. Considering the non-linear and unknown distribution of system error and measurement error, a Back Propagation (BP) neural network was developed to compensate for these errors. The effectiveness of the established PF method combined with BP network was validated by experimental results, and higher prediction accuracy of gap position tracking was achieved.

11 citations

Journal ArticleDOI
Qiao Li1, Yuanxiang Zhu1
TL;DR: In this article, the NiTi/SS joint was welded at an impact speed of 40mm/s with the highest strength of 522.41MPa with (7´±´2´% rupture elongation, and it fractures via micro-void coalescence.

11 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202328
2022122
2021112
2020219
2019290
2018349