Results 1 to 10 of about 468 (126)
Experimental evaluation of aluminothermic welds [PDF]
Acta Polytechnica CTU Proceedings, 2023 The article presents a study of the mechanical processes occurring during the aluminothermic reaction using experimental methods (strain gauges, digital image correlation, thermography, scanning electron microscopy, profilometry).
Lukáš Zeman +5 more
doaj +7 more sources
Model development for casting simulation of railway aluminothermic welding [PDF]
Tehnika, 2023 Aluminothermic welding has been used to connect railway rails for over a century. This technique has the advantages of flexibility, weld compactness, and simplicity. External energy is not required for the procedure.
Jovanović Gvozden B. +4 more
doaj +3 more sources
Improvement of at-welding technology of railway rails with different cross sections [PDF]
Tehnika, 2021 The paper presents a new aluminothermic (AT) welding technology of 49E1 transition rails on 60E1 (EN 13674-1: 2005), based on entirely new materials. It refers to sand molds in which the shape and dimensions of the inflow system are designed to meet all ...
Manojlović Vaso D. +4 more
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Optimization of mold design for aluminothermic welding of railway tracks by software simulation [PDF]
Tehnika, 2022 The aluminothermic welding process of rail welding has been used to join railway rails for more than a century. The benefits of this procedure include its flexibility, compactness of the weld, and ease of execution.
Delić Alen Š. +3 more
doaj +2 more sources
Finite element modeling of the aluminothermic welding with internal defects and experimental analysis [PDF]
MATEC Web of Conferences, 2012 There are several hundreds aluminothermic welds and tenth of new welds being made daily on the Moroccan rail network. Although the aluminothermic welding technique is well proven, it is a critical safety component of the rail infrastructure.
Sidki F. +3 more
doaj +2 more sources
Gas Metal Arc Root Welding of Pearlitic Rails Using Magnetic Arc Deflection [PDF]
MATEC Web of Conferences, 2019 Magnetic arc deflection was applied to improve gas metal arc root welds on R260 pearlitic rail steel foot samples. During laboratory welding trials parameter optimization was carried out which comprised the welding current, voltage and speed, layer ...
Weingrill Leonhard +4 more
doaj +3 more sources
Mokslas: Lietuvos Ateitis, 2013 This article is about the aluminothermic welding quality ofrail joints, using different parameters. The thermit portion andpreheat time estimated for quality of welded joints as well asthe mechanical characteristics of aluminothermic welds in railshave ...
Mindaugas Rauduvė, Vitalijus Rudzinskas
doaj +3 more sources
Welding of earthing sockets using the aluminothermic process [PDF]
Journal of Research and Innovation for Sustainable SocietyExothermic welding is a welding process at extremely high temperatures, based on chemical reactions that release significant amounts of heat. This is a fundamental process in making electrical connections, especially in the installation of earthing ...
C Alexandru +3 more
doaj +2 more sources
Influence of feeder positions at preheating temperature distribution in railway aluminothermic welding simulation [PDF]
TehnikaOne of the most used techniques for making a continuous rail track is aluminothermic welding. This technique has its advantages in its simplicity, portability, and it does not require external energy when repairing or connecting tracks.
Jovanović Gvozden B. +5 more
doaj +4 more sources
Improving the technology of aluminothermic rail welding based on software simulation [PDF]
Journal of Physics: Conference Series, 2021 Abstract One of the modern methods of connecting railway rails when creating a continuous welded track is thermite welding. The gap between the rails, into which the metal is poured, is 25 mm. However, when repairing rails on the way, it may not be enough to eliminate the defective rail section.
M S Galay, A S Ilinykh
openaire +1 more source