Hybrid laser-arc welding process of full penetration T joint in high speed railway vehicle bogie

2019 ◽  
Author(s):  
Kai Li ◽  
Guangzhong He ◽  
Hongxiao Wang ◽  
Chunsheng Wang
Keyword(s):  
Arc Welding ◽  
High Speed ◽  
Welding Process ◽  
Railway Vehicle ◽  
Hybrid Laser Arc Welding ◽  
High Speed Railway ◽  
Full Penetration ◽  
Arc Welding Process

Hybrid laser/arc welding process for controlling bead profile

2007 ◽  
Vol 12 (8) ◽  
pp. 677-688 ◽  
Author(s):  
M.H. Cho ◽  
D. Farson ◽  
Y.C. Lim ◽  
H.W. Choi
Keyword(s):  
Arc Welding ◽  
Welding Process ◽  
Hybrid Laser Arc Welding ◽  
Arc Welding Process ◽  
Bead Profile

scholarly journals Hybrid laser arc welding: State of the art in technology

2021 ◽  
Vol 66 (3) ◽  
pp. 115-124
Author(s):  
Martin Petreski ◽  
Dobre Runchev ◽  
Gligorche Vrtanoski
Keyword(s):  
Industrial Application ◽  
Arc Welding ◽  
Stable Process ◽  
Welding Process ◽  
Welding Parameters ◽  
Heat Sources ◽  
Hybrid Laser Arc Welding ◽  
Current State ◽  
Complex Process ◽  
Arc Welding Process

Hybrid laser arc welding is complex process where two heat sources act simultaneously in a common weld pool. The synergy effect of laser beam and electric arc offers several advantages over other individual technological processes, such as: higher welding speed, increased productivity, deeper penetration, better gap bridging ability, stable process, less heat input to the welding material, etc. However, the combination of two heat sources in a single welding process leads to large number of parameters that need to be synchronized and optimized in order to obtain a perfect weld. This paper presents the current state of hybrid laser arc welding in terms of its development, industrial application and scientific research. The introduction part contains a general overview of the hybrid laser arc welding process, its advantages and operating principles, and chronological development. In the second part, welding parameters that directly influence on the hybrid process have been discussed. The third part presents the performance and weld qualities achieved by hybrid welding process in accordance with previous research. In the final part, examples of industrial application and conclusions for further research and development related to hybrid laser arc welding are given.

scholarly journals Validación de la soldabilidad mediante alambre tubular con núcleo de fundente “FCAW” para aceros navales deteriorados (FLUX CORED ARC WELDING)

2010 ◽  
Vol 3 (6) ◽  
pp. 41
Author(s):  
Alfonso Patarroyo ◽  
Elvis Solano ◽  
Fabio Cueca ◽  
Fernando Rojas ◽  
Alfredo Morales
Keyword(s):  
Arc Welding ◽  
Welding Process ◽  
Steel Plates ◽  
Full Penetration ◽  
Flux Cored Arc Welding ◽  
Liquid Condition ◽  
Electric Arc Welding ◽  
Arc Welding Process ◽  
Metallurgical Reactions ◽  
High Degree

Repairs and changes of steel plates in the structure of the vessels where it is possible to find steels with a high degree of deterioration need reliable welded joints in naval steel of the type ASTM A–131 Gr. A new to old. Due to the fact that the variables associated to the weldability of the materials to be repaired are not known, it is necessary to make a study on the weldability of steel ASTM A131 Gr A, in full penetration seams or junctures, under the various parameters involved in the welding process, to determine the influence of the corroding residues that affect the application of welding compounds through the analysis of the metallurgical reactions of liquid condition in order to select the contributing materials with the alloy elements that are able to prevent these phenomena and to recommend the best practices for the electric arc welding process with tubular electrode with FCAW flux core.

Welding Phenomena in Hybrid Laser-Rotating Arc Welding Process

2007 ◽  
Vol 539-543 ◽  
pp. 4093-4098 ◽  
Author(s):  
Hyun Byung Chae ◽  
Cheol Hee Kim ◽  
Jeong Han Kim ◽  
Se Hun Rhee
Keyword(s):  
Arc Welding ◽  
High Speed ◽  
Gas Metal Arc Welding ◽  
Laser Beam Welding ◽  
Welding Process ◽  
Laser Illumination ◽  
Metal Arc Welding ◽  
Rotating Arc ◽  
Arc Welding Process ◽  
Conventional Laser

Hybrid laser-rotating arc welding (HLRAW) process was designed by combining the laser beam welding (LBW) process with the rotating gas metal arc welding (RGMAW) process. In this study, comparing with conventional HLAW, weld bead characteristics as a function of the various process parameters were evaluated for HLRAW. Moreover, welding phenomena were analyzed by high speed monitoring with laser illumination. The arc rotation enhances the weld pool motion, therefore it reduces the undercut formation which is one of most critical weld defects in the conventional laser-arc hybrid welding.

The Determination of Noxes Emissions in Case of Manual Arc Welding Process with Coated Electrode

2018 ◽  
Vol 69 (7) ◽  
pp. 1826-1829
Author(s):  
Claudiu Babis ◽  
Augustin Semenescu ◽  
Oana Roxana Chivu ◽  
Maria Alina Gligor ◽  
Gabriel Iacobescu ◽  
...  
Keyword(s):  
Production System ◽  
Arc Welding ◽  
Welding Process ◽  
Practical Method ◽  
Machine Building ◽  
Short Exposure ◽  
Metal Bath ◽  
Coated Electrode ◽  
Manual Arc Welding ◽  
Arc Welding Process

The occupational risk assessment of a machine building company must cover each activity and workstation, taking into account each component of the production system (work system), each workload, work equipment and the work environment. This assessment is an extremely complicated and complex issue since the production system of such an enterprise is particularly complex and complicated. Welding assembly is a highly polluting technology process, especially of the atmosphere and soil. The formation of gases in the welding process is the result of burning of the electrodes, powders, forming the molten metal bath and making the weld seam. Welding operators are exposed to smoke and toxic gases resulting from the welding process, which can in many cases be hazardous to health. Many acute intoxications that may be caused by excessive exposure to or short exposure to smoke and gas resulting from the welding process have been studied over time. In the paper are presented the elements of risk related to the welding process and the most widespread occupational diseases that can occur in the ranges of the welding operators. The following are presented the noxious emissions from welding and are determined by a practical method the emission of noxious at welding deposition of a welding sample, using the manual arc welding process with coated electrode.

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