Results 51 to 60 of about 117,389 (246)

Difficulties and redressal in joining of aluminium alloys by GMA and GTA welding: a review

Journal of Materials Research and Technology, 2023
The article reviews the difficulties and its redressal in fusion welding (especially the most used welding processes in the industry; gas metal arc (GMA) and gas tungsten arc (GTA) welding) of aluminium alloys.
Rajesh P. Verma, K.N. Pandey, Kovács András, Rohit Khargotra, Tej Singh   +4 more
doaj  

Grain refinement control in TIG arc welding [PDF]

, 1975
A method for controlling grain size and weld puddle agitation in a tungsten electrode inert gas welding system to produce fine, even grain size and distribution is disclosed.
Iceland, W. F., Whiffen, E. L.
core   +1 more source

Solidification of Tungsten Inert Gas–Welded Austenitic Stainless Steel with 0.17 wt% N

steel research international, Volume 96, Issue 5, May 2025.
The classical Scheil model with fast diffusion of nitrogen is used to describe the solidification of the weld seam from austenitic CrMnNi–N steel. The microsegregation of the elements Ni, Cr, Mn, Mo, and N is calculated and compared with experimental findings. Further, the correlation between secondary dendrite arm spacing and cooling rate is made.
Caroline Quitzke, Michael Hauser, Lutz Krüger, Olena Volkova, Marco Wendler   +4 more
wiley   +1 more source

Internal wire guide for GTAW welding [PDF]

, 1989
A welding torch for gas tungsten arc welding apparatus has a filler metal wire guide positioned within the torch, and within the shielding gas nozzle. The wire guide is adjacent to the tungsten electrode and has a ceramic liner through which the wire is ...
Dyer, Gerald E., Morgan, Gene E.
core   +1 more source

Influence of Specific Ball‐Milling Energy on Mechanical and Corrosion Properties of Zn–0.2 Graphene Nanoplatelet Composites

Advanced Engineering Materials, Volume 27, Issue 7, April 2025.
In this study, the effect of specific ball‐milling energy (SBME) on the mechanical and corrosion properties of graphene nanoplatelets (GNPs) Zn matrix composites is presented. GNPs are uniformly dispersed in the Zn powder mixtures at the optimal SBME of 32.82 kJ g−1.
Humayun Kabir, Khurram Munir, Cuie Wen, Yuncang Li   +3 more
wiley   +1 more source

Cooling of Duplex Stainless‐Steel Bars With Different Water and Air Impinging Jet Flow Rates

Engineering Reports, Volume 7, Issue 4, April 2025.
This study investigates the cooling behavior of super duplex stainless steel bars using water and air impinging jet quenching technique (IJQT) of various flow rates. The findings highlight the critical role of cooling rate in controlling sigma‐phase formation and impact toughness, demonstrating the effectiveness of the IJQT in industrial applications ...
Pavel Romanov, Getiye Gebeyaw, Arvid Jahedi, Rasmus Kristensen, Bahram Moshfegh, Viktor Norman, Ru Lin Peng, Mattias Calmunger   +7 more
wiley   +1 more source

A Point Cloud-Based Method for Automatic Groove Detection and Trajectory Generation of Robotic Arc Welding Tasks [PDF]

arXiv, 2020
In this paper, in order to pursue high-efficiency robotic arc welding tasks, we propose a method based on point cloud acquired by an RGB-D sensor. The method consists of two parts: welding groove detection and 3D welding trajectory generation. The actual welding scene could be displayed in 3D point cloud format. Focusing on the geometric feature of the
arxiv  

Comparative Fatigue Analysis of Structural Steels Considering Welding and Surface Effects

Strain, Volume 61, Issue 2, April 2025.
ABSTRACT There are limited data on the very high‐cycle fatigue for structural steel welds for over 10 million cycles. The purpose of this research is a fatigue performance comparison of the welds made of steels S355JR+AR and S275JR+AR. The goal of reaching the gigacycle fatigue domain is achieved using the ultrasonic fatigue testing at 20 kHz.
Yevgen Gorash, Tugrul Comlekci, Carl Walker, Athanasios Toumpis, James Kelly, Andrew England, Lewis Milne   +6 more
wiley   +1 more source

Residual stress evaluation in API 5L X65 girth welded pipes joined by friction welding and gas tungsten arc welding

Journal of Materials Research and Technology, 2019
The present study compared the residual stress states in friction welded pipes of API 5L X65 to those achieved by gas tungsten arc welding (GTAW). X-ray diffraction (XRD) was used to assess residual stresses.
Carlos Alexandre Pereira de Moraes, Mariane Chludzinski, Rafael Menezes Nunes, Guilherme Vieira Braga Lemos, Afonso Reguly   +4 more
doaj  

Influence of central ventilation on the formation of narrow gap TIG welds

Hanjie xuebao
In response to the problem of poor side wall fusion of narrow gap tungsten inert gas(TIG) , this article adopts the method of tungsten electrode center ventilation to expand the welding arc and transfer the arc heat to the groove side wall to ensure ...
Wanghui XU, Xinghua JIA, Rongze ZHAO, Chen YU, Chunfu GUO, Chen YANG   +5 more
doaj   +1 more source