Results 21 to 30 of about 4,954 (242)

Environmental Impact of Silicic Magmatism in Large Igneous Province Events

open access: yesGeophysical Monograph Series, Page 133-151., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley  

+1 more source

Study on the Molten Pool Fluid Behavior of PAW-Cable-Type Seven-Wire GMAW Hybrid Welding

open access: yesCrystals, 2022
Plasma arc welding (PAW)-cable-type seven-wire GMAW (gas metal arc welding) hybrid welding is known as a high-efficiency welding combining plasma arc, GMAW arc and cable-type welding wire. In this study, numerical simulation via Fluent of the molten pool
Chao Zhang, Qingxian Hu, Juan Pu, Hao Wu
doaj   +1 more source

Comparative Study of Laser-Arc Hybrid Welding for AA6082-T6 Aluminum Alloy with Two Different Arc Modes

open access: yesMetals, 2020
The effects of arc modes on laser-arc hybrid welding for AA6082-T6 aluminum alloy were comparatively studied. Two arc modes were employed: pulsed metal inert gas arc and cold metal transfer arc.
Xiaohui Han   +4 more
doaj   +1 more source

Techno-economic Feasibility of Modified Pulse Arc Deposition on Thick Section of Quenched and Tempered Steel [PDF]

open access: yesMATEC Web of Conferences, 2019
Quenched and Tempered (Q&T) steels welded structures that have numerous applications, particularly in the defence industry. However these steels are particularly prone to Hydrogen Assisted Cold Cracking (HACC) and require a highly-skilled welder to ...
Cornish Neville   +3 more
doaj   +1 more source

Research status of seam tracking methods for orbital pipe welding robots

open access: yesJournal of Hebei University of Science and Technology, 2015
This paper first outlines the worldwide oil and gas pipeline laying situation by 2013 and industrial applications, the working characteristics and advantages of orbital pipe welding robots using the gas metal arc metal(GMAW).
Sheng HU   +4 more
doaj   +1 more source

Depth of penetration in gas metal arc welding [PDF]

open access: yesScience and Technology of Welding and Joining, 1999
A model is presented of the depth of penetration in gas metal arc welding. This model is based on the assumption that the heat and mass transfer to the weld pool and the depth of penetration may be correlated by a dimensionless relation. This correlation leads to an analytical expression for depth of penetration, which involves empirical constants ...
Murray, P.E., Scotti, A.
openaire   +2 more sources

EVALUATION OF TEMPERATURE DISTRIBUTION AND FLUID FLOW IN FUSION WELDING PROCESSES

open access: yesJournal of Engineering, 2007
A theoretical study of heat transfer and fluid flow phenomena in welding process has been carried out in the present work. The study involved the numerical solution of the transient NavierStokes and Energy equations of the weld pool region by using ...
Ihsan Y. Hussain   +1 more
doaj   +3 more sources

Three-Dimensional Numerical Study on the Metal Rotating Spray Transfer Process of High-Current GMAW

open access: yesChinese Journal of Mechanical Engineering, 2022
A three-dimensional numerical model based on the volume-of-fluid (VOF) method is typically preferred for studying high-current gas metal arc welding (GMAW) metal transfer mechanism and then controlling it.
Lei Xiao, Ding Fan, Jiankang Huang
doaj   +1 more source

On the Visualization of Gas Metal Arc Welding Plasma and the Relationship Between Arc Length and Voltage

open access: yesApplied Sciences, 2017
In this article, the camera settings for high-speed imaging of the arc, metal transfer, and weld pool in gas metal arc welding (GMAW) are investigated.
Emanuel B. F. Dos Santos   +4 more
doaj   +1 more source

The Influence of Two-Jet Gas Shielding Parameters on the Structure and Microhardness of Steel 45 Joints during Consumable Electrode Welding

open access: yesMetals, 2023
The paper presents the study results of the parameters influence of arc welding with a consumable electrode with two-jet gas shielding in CO2 on the structure and microhardness of high-strength steel 45 welded joints with slotted edges.
Dmitry A. Chinakhov   +1 more
doaj   +1 more source

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