Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging [PDF]
Heliyon, 2023 There are many problems in the arc welding repair of aluminum alloy parts, such as excessive pores, coarse grains, and low hardness. Introducing external energy excitation is an effective solution.
Zhichao Chen +5 more
doaj +2 more sources
The Effect of Groove Shape on Molten Metal Flow Behaviour in Gas Metal Arc Welding. [PDF]
Materials (Basel), 2021 One of the challenges for development, qualification and optimisation of arc welding processes lies in characterising the complex melt-pool behaviour which exhibits highly non-linear responses to variations of process parameters. The present work presents a simulation-based approach to describe the melt-pool behaviour in root-pass gas metal arc welding
Ebrahimi A +4 more
europepmc +2 more sources
Composite control of the SiC arc welding power source based on the expert system and neuron PID [PDF]
E3S Web of Conferences, 2021 A third generation wide-band-gap SiC semiconductor device is used in the SiC arc welding power source, which has a higher inverter frequency and greatly improves the dynamic characteristics of the arc welding power source, providing opportunities for ...
Si-min Chen +3 more
doaj +1 more source
Experimental Investigation of Oxy-acetylene Welding and Arc Welding with Steel, Brass, and Bronze Electrodes [PDF]
مهندسی عمران شریف, 2022 To consider the importance of avoiding corrosion of weld metal under various environmental conditions, the investigation into the efficiency of different welding methods with different types of electrodes will be inevitable.
B. Shervani Tabar +2 more
doaj +1 more source
Research on Arc Length Tracking Control Technology of Tube-Sheet Welding Based on Pulsed TIG
IEEE Access, 2023 During tungsten inert gas welding process, arc length will change due to thermal deformation, uneven surface of workpiece and tungsten electrode loss. Considering the large fluctuation of arc length in all-position annular seam welding under the action ...
Jianhua Ma +4 more
doaj +1 more source
Design of girth welding system based on tungsten inert gas welding
International Journal of Advanced Robotic Systems, 2023 This article studies the multi-layer and multi-pass welding of the circumferential weld in the thick pipe welding of an aviation enterprise, based on the static characteristics of the welding arc, through data calculations and experiments to verify the ...
Lei Chen, Jizhong Liu, Lei Hu
doaj +1 more source
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2020 In aluminum alloy double pulse metal inert-gas (DPMIG) welding, the outputting arc current waveform is distorted under the influence of various factors such as harmonics and impact loads. The arc distortion of aluminum alloy DPMIG welding affects the arc
Kuanfang HE +6 more
doaj +1 more source
Selection of Welding Process for Repairing Shredder Hammer by Integrated Data Envelopment Analysis (DEA) and P-robust Technique [PDF]
MATEC Web of Conferences, 2019 The Selection of the welding process is one of the most significant decision-making problems, and it involves a wide range of information following the type of product.
Wisnu Wardana Rahmad +2 more
doaj +1 more source
The Effects of Process Parameters on Melt-pool Oscillatory Behaviour in Gas Tungsten Arc Welding [PDF]
J. Phys. D: Appl. Phys. 54 275303 (2021), 2021 Internal flow behaviour and melt-pool surface oscillations during arc welding are complex and not yet fully understood. In the present work, high-fidelity numerical simulations are employed to describe the effects of welding position, sulphur concentration (60-300 ppm) and travel speed (1.25-5 mm/s) on molten metal flow dynamics in fully-penetrated ...
arxiv +1 more source
Welding of Large Thickness Super Duplex Stainless Steel: Microstructure and Properties
Metals, 2021 In this study, Submerged Arc Welding (SAW) and Gas Metal Arc Welding (GMAW) processes were used in multi-pass welding of 33 mm thickness super duplex stainless steel plates.
Maria Asuncion Valiente Bermejo +3 more
doaj +1 more source