Results 21 to 30 of about 1,610 (249)

Process Stability, Microstructure and Mechanical Properties of Underwater Submerged-Arc Welded Steel

open access: yesMetals, 2021
In underwater wet welding, the unstable welding process caused by the generation and rupture of bubbles and the chilling effect of water on the welding area result in low quality of welded joints, which makes it difficult to meet the practical ...
Maofu Zhang   +5 more
doaj   +1 more source

Computational methods for creation materials with required composition and structure [PDF]

open access: yeschapter 17, pp. 445-464 in Materials Science book edited by Itzhak Mastai, Intech publ (2013), 2018
One of the most important and complicated problems in modern industry is to obtaining materials with the required chemical composition, structure and mechanical and physical properties. Solving this problem involves great deal of time and expense, and the results obtained might be far from the optimal solution.
arxiv   +1 more source

Augmentation in depth of penetration of hastelloy C-22 by FATIG welding

open access: yesAdvances in Industrial and Manufacturing Engineering, 2022
Flux assisted tungsten inert gas welding (FATIG) welding is a modified version of tungsten inert gas (TIG) welding to achieve a higher depth of penetration. In the present work, nanoparticles SiO2, Al2O3, Fe2O3, and CuO mix with acetone and coated on the
Dixit Patel, Suketu Jani, Darshit Shah
doaj  

Design and Test of Duckbill Welding Robot for Cotton Seeder

open access: yesAgriculture, 2022
To improve the automation, welding efficiency, and welding quality of duckbill welding of the cotton seeder, this study designed a cotton seeder duckbill welding robot.
Yu Ren   +6 more
doaj   +1 more source

Ractice of EF3 Ultra-low Phosphorus Smelting Process for High-grade Pipeline Welding Wire [PDF]

open access: yesTeshugang
 In order to realize the stable batch production of ultra-low P welding wire EF3 for high-grade pipelines, the conditions of dephosphorization were determined by studying the thermodynamic and dynamic conditions of dephosphorization.
Zhang Xingli, Qi Fengyou, Su Yongze, Cui Guibo, Tang Qing, Hou Jianwei
doaj   +1 more source

Evaluasi Mutu Pada Proses Pengelasan Menggunakan Metode Old dan New Seven Tools di PT. XYZ

open access: yesJurnal Serambi Engineering, 2023
In the service and manufacturing industry competition, companies need to maintain the quality of the products they produce. PT XYZ is a company engaged in steel fabrication work services.
Dwi Putri Fajar, Deny Andesta
doaj   +1 more source

A novel approach of ultra-low diffusible hydrogen welding wire for underwater wet flux-cored arc welding: a spontaneous barrier of molten slag

open access: yesJournal of Materials Research and Technology, 2023
In underwater wet welding, a hydrogen-rich arc atmosphere generated by the thermal decomposition of water leads to extremely high diffusible hydrogen content and defects such as pores and cracks in the weld.
Xin Zhang   +6 more
doaj  

A novel strategy to prevent hydrogen charging via spontaneously molten-slag-covering droplet transfer mode in underwater wet FCAW

open access: yesMaterials & Design, 2023
Underwater wet welding is widely used in offshore platform maintenance, oil pipeline repair and wreck salvage operations. A high diffusible hydrogen content is recognized as one of the critical reasons behind the reduction in the reliability of ...
Ning Guo   +5 more
doaj  

Analysis of Surface Defects of High Strength Welding Wire Steel N2M2T Continuous Casting Billet and Process Improvement [PDF]

open access: yesTeshugang
In response to the surface defects such as concavities, deep vibration marks, cracks, and slag pits on the surface of continuous casting billets during the smelting of N2M2T high-strength welding wire steel in a certain steel plant,combined with ...
Su Yongze, Zhang Xingli, Dai Fangyin, Cui Guibo, Chen Xinyan
doaj   +1 more source

Computational study of non-isothermal slag eye formation and its effects on ladle refining [PDF]

open access: yesarXiv, 2023
Ladle refining is one of the most important aspects of high-quality steel production. Ladle argon purging which facilitates the refining process also leads to the unwarranted opening of the slag cover known as Slag Eye-opening and has a deleterious effect on the quality of steel.
arxiv  

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