Results 81 to 90 of about 18,159 (208)

Mechanical properties and microstructure of longitudinal submerged arc welded joint of a new C–Mn steel sheet cladding fine grained ferrite in surface layer for a long distance transport pipeline

Materials Research Express, 2020
A new type of C–Mn pipeline steel plates with the ult5ra-fine grained ferrite in surface layer and the fine-grained ferrite in the central layer has been developed successfully. In order to manufacture the long distance oil pipelines using this new ultra-
J W Fan, J Luo, J J Gao, F H Bo, Q Ren, H X Lin, H B Geng   +6 more
doaj   +1 more source

High-velocity impact welding

, 1979
Bibliography: p. 203-211.
openaire   +2 more sources

Systematic study of effect of cross-drafts and nozzle diameter on shield gas coverage

, 2013
A shield gas flow rate of 15–20 L min21 is typically specified in metal inert gas welding, but is often adjusted to as high as 36 L min21 by welders in practice. Not only is this overuse of shield gas wasteful, but uncontrolled high gas flows can lead to
Mcpherson, N A, Galloway, A M, Campbell, Stuart, Moore, A.J., Moore, A J; id_orcid, Galloway, Alexander, Ramsey, G M, Beyer, V., Beyer, V, Ramsey, Gemma, McPherson, Norman, Campbell, S W   +11 more
core   +1 more source

Single sided single pass submerged arc welding of austenitic stainless steel

, 2007
The weld metal produced from a series of high productivity welds of 316LN austenitic stainless steel plate was examined to evaluate the effects of the use of a higher heat input process (> 2.5kJ/mm).This high heat input process was aimed at maximising ...
McPherson, N.A., McLean, M.S., Baker, T.N., Chi, K.   +3 more
core   +1 more source

Simulation and Experimental Comparison of Laser Impact Welding with a Plasma Pressure Model

Metals, 2019
In this study, spatial and temporal profiles of an Nd-YAG laser beam pressure pulse are experimentally characterized and fully captured for use in numerical simulations of laser impact welding (LIW). Both axisymmetric, Arbitrary Lagrangian-Eulerian (ALE)
Sepehr Sadeh, Glenn H. Gleason, Mohammad I. Hatamleh, Sumair F. Sunny, Haoliang Yu, Arif S. Malik, Dong Qian   +6 more
doaj   +1 more source

Impact Analysis of Welding Sequence to Reduce Weld Deformation in Aluminum Hulls

Journal of Marine Science and Engineering
Aluminum hulls, which are preferred in the marine industry due to their durability, corrosion resistance, and lightweight properties, face serious challenges due to thermal deformation during welding. This study aims to predict and minimize transverse deformations due to welding sequences for a transverse model in the lower part of an aluminum hull. To
Chungwoo Lee, Suseong Woo, Jisun Kim
openaire   +2 more sources

Numerical Study on Welding Residual Stress Distribution of Corrugated Steel Webs

, 2022
Residual stresses are an inevitable result of the welded fabrication process of corrugated steel webs (CSWs), resulting in structures with high and unpredictable stress fields, causing unexpected failures.
Xinhui Xiao, Fanghuai Chen, Haiping Zhang, Zhiguo Ouyang, Wei Ma, Yang Liu, Li Li   +6 more
core   +1 more source

Prediction and optimization of residual stresses, weld-bead profile and mechanical properties of laser welded components [PDF]

, 2006
Recently, laser welding has become a leading industrial joining process. Mainly because it has become highly automated using sophisticated robotic systems. However, to make effective use of automated laser welding it is essential to have a high degree of
Benyounis, Khaled
core  

Promoting austenite formation in laser welding of duplex stainless steel-impact of shielding gas and laser reheating

, 2021
Avoiding low austenite fractions and nitride formation are major challenges in laser welding of duplex stainless steels (DSS). The present research aims at investigating efficient means of promoting austenite formation during autogenous laser welding of ...
Hosseini, Vahid,, Hosseini, Vahid, Hurtig, Kjell,, Hurtig, Kjell, Karlsson, Leif, Karlsson, Leif,, Baghdadchi, Amir, Baghdadchi, Amir,   +7 more
core   +1 more source

An analysis of the efficiency and accuracy of manual and autonomous four-wheeled linear welding across various parameters

Discover Mechanical Engineering
This study investigates the performance of manual versus autonomous welding performance using a four-wheeled linear welding robot, focusing on stitch and continuous welding methods for dissimilar materials.
Anish Pandey, M. Prem Kumar Reddy, Ch. Siva Ramakrishna, Shrikant Zade, Ramanpreet Singh   +4 more
doaj   +1 more source