Results 21 to 30 of about 75,293 (304)

Mechanical properties of repair welds for aluminum alloy 6082-T6 by pulsed MIG welding process [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
The mechanical properties of repair welding of aluminum alloy 6082-T6 welded with 5356 filler metal were studied using pulsed metal inert gas (MIG) welding process at frequencies of 1.5 Hz and 5 Hz.
Thet Htet Naing, Prapas Muangjunburee
doaj   +1 more source

Effect of Welding Sequence and the Transverse Geometry of the Weld Overlay on the Distribution of Residual Stress in the Weld Overlay Repair of T23 Tubes

open access: yesMetals, 2021
Water-wall tubes are important components in power plants and are used to absorb the heat from the boilers, and they often fail prematurely due to corrosion, erosion, and fatigue during service. To repair the defects, weld overlay repair is often adopted
Xin Xiao   +4 more
doaj   +1 more source

Development and implementation of robotized wire arc additive repair of a gas turbine diaphragm [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2023
The current practice of reconstruction of oxidized turbine parts (due to hot corrosion) using arc welding methods facilitates restoration of the nominal shapes and dimensions, as well as other attributes and features.
Piotr Steckowicz   +2 more
doaj   +1 more source

Discussion on repair technology of girth weld defects of high-grade steel pipelines

open access: yesYou-qi chuyun, 2020
In recent years, as for the frequent occurrence of failure accidents of high-grade steel pipelines caused by girth weld cracking, great attention has been drawn to the quality of girth weld and defect repair of high-grade steel pipelines. In terms of the
Rongguang LI   +7 more
doaj   +1 more source

Increasing Labor Efficiency Repairing Metal Structures of Heavy-Duty Quarry Machinery [PDF]

open access: yesE3S Web of Conferences, 2019
Supporting metal structures of large dump trucks at open cast coal mines function under exposure to alternating cyclic load. Fatigue cracks that appear there require timely maintenance welding.
Drygin Michael, Kuryshkin Nikolai
doaj   +1 more source

In-service automatic welding technology for high-grade large-diameter oil and gas pipelines

open access: yesYou-qi chuyun, 2021
As more long-distance oil and gas pipelines with high pressure, large diameter, high steel grade and large wall thickness are constructed, the wall of the fittings such as the hot tapping tees and the repair sleeves that are involved in the in-service ...
Juan CHEN   +7 more
doaj   +1 more source

Elastoplastic Fracture Analysis of the P91 Steel Welded Joint under Repair Welding Thermal Shock Based on XFEM

open access: yesMetals, 2020
P91 steel is a typical steel used in the manufacture of boilers in ultra-supercritical power plants and heat exchangers in nuclear power plants. For the long-term serviced P91 steel pressurized structures, the main failure mode is the welded joint ...
Kai Yang, Yingjie Zhang, Jianping Zhao
doaj   +1 more source

Part Repair using a Hybrid Manufacturing System [PDF]

open access: yes, 2005
Nowadays, part repair technology is gaining more interest from military and industries due to the benefit of cost reducing as well as time and energy saving. Traditionally, part repair is done in the repair department using welding process.
Eiamsa-ard, Kunnayut   +5 more
core   +2 more sources

The repair of foundry defects in steel castings using welding technology [PDF]

open access: yes, 2018
Use of welding technology for the repair of steel castings is particularly common in two areas. These include weld surfacing of protrusions that remained incomplete after casting, or filling the surface defects (cavities).
Gucwa, Marek   +4 more
core   +1 more source

Statistical analysis of second repair welding on dissimilar material using Taguchi method

open access: yesJournal of Mechanical Engineering and Sciences, 2019
This paper presents an experimental investigation on effect of welding parameter to repair welding of dissimilar material using Gas Metal Arc Welding (GMAW) machine.
N. I. S. Hussein   +3 more
doaj   +1 more source

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