Mechanized welding of studs to supporting frames of column trays

1973 ◽  
Vol 9 (6) ◽  
pp. 560-560
Author(s):  
V. S. Tetnev ◽  
N. N. Meshalkin
Keyword(s):  
Mechanized Welding

scholarly journals Application of robotic and mechanized welding under disturbing factor conditions

2016 ◽  
Vol 2016 (7) ◽  
pp. 42-46 ◽  
Author(s):  
E.V. Shapovalov ◽  
◽  
V.V. Dolinenko ◽  
V.A. Kolyada ◽  
T.G. Skuba ◽  
...  
Keyword(s):  
Disturbing Factor ◽  
Mechanized Welding

Development and study of a material for mechanized welding of basic structures from nonmagnetic high-strength nitrided steel

2011 ◽  
Vol 2 (6) ◽  
pp. 612-617
Author(s):  
G. Yu. Kalinin ◽  
R. V. Bishokov ◽  
P. V. Mel’nikov ◽  
L. A. Berezovskaya ◽  
V. A. Mogil’nikov ◽  
...  
Keyword(s):  
High Strength ◽  
Nitrided Steel ◽  
Mechanized Welding

The Qualification and Continued Evolution of Reeled Steel Catenary Risers

2009 ◽  
Author(s):  
Fin Gray ◽  
Brett Howard ◽  
Alexandra Pieton ◽  
Ramon Gallart
Keyword(s):  
Full Scale ◽  
Fatigue Performance ◽  
Track Record ◽  
Mechanized Welding ◽  
Steel Catenary Risers ◽  
Weld Fatigue ◽  
Fit For Purpose ◽  
Girth Welds ◽  
The Impact ◽  
Welding Processes

Technip began qualification of reeled Steel Catenary Risers (SCR) back in 1997. Industry had raised concerns at that time over the plastic straining cycles that are intrinsic to the reel lay method and the impact these could have upon the service fatigue life of the girth welds. The qualification programme, therefore, included comparison of reeled welds against virgin welds for a suite of fatigue and mechanical testing including full scale fatigue and fatigue crack growth tests. Reeling was shown to have no discernable impact for the fatigue performance level sought when a controlled SCR fabrication process was adhered to. This provided sufficient confidence that the technology was fit for purpose and led to successful fabrication and installation of the first reeled SCR in 2001. Since then more than 25 have been installed in the Gulf of Mexico, with most projects including full scale weld fatigue test qualification following reeling simulations. This paper includes the following: (a) a summary of the philosophy adopted for qualification, fabrication and installation of a reeled SCR, (b) presentation of the reeled SCR track record and evolution of the technology to include mechanized welding processes (c) a look at ongoing developments targeting even higher fatigue performance, and (d) discussion on the development of fracture mechanics techniques that provide further confidence in the concept and can be used to derive appropriate weld acceptance criteria.

Mechanized welding of duplex steel thick-walled vessels

1967 ◽  
Vol 3 (6) ◽  
pp. 472-476
Author(s):  
I. I. Kumysh ◽  
V. A. Lutsyuk-Khudin ◽  
V. Ya. Saenko ◽  
G. G. Andrianov
Keyword(s):  
Duplex Steel ◽  
Mechanized Welding

Mechanized Welding

1965 ◽  
Vol 68 (561) ◽  
pp. 1377-1380
Author(s):  
Keizo TEZUKA
Keyword(s):  
Mechanized Welding

Welding of High Strength Pipelines

2004 ◽  
Author(s):  
Bill Bruce ◽  
Jose Ramirez ◽  
Matt Johnson ◽  
Robin Gordon
Keyword(s):  
Weld Metal ◽  
Charpy Impact ◽  
High Strength ◽  
Shielding Gas ◽  
Hydrogen Cracking ◽  
Mechanized Welding ◽  
Margin Of Safety ◽  
Girth Welds ◽  
Welding Consumables

This paper presents the results of a project jointly funded by PRCI and EWI to evaluate the welding of X100 pipe grades using commercially available welding consumables. The welding trials included manual, semi-automatic and mechanized welding procedures. It was found that the combination of Pulsed GMAW and ER100S-1 (using a mixed shielding gas) produced both excellent Charpy impact and CTOD performance, but could result in undermatched girth welds if the pipe significantly exceeds minimum strength requirements. Although ER120 S-1 provides an additional margin of safety in strength, which should accommodate variations in X-100 pipe properties, the toughness results were marginal at −10°C. The risk of weld metal hydrogen cracking in X100 girth welds was also investigated.

Research on the quality of welded joints of P265GH heatresistant steel pipes at electron beam mechanized welding

2020 ◽  
Vol 65 (1) ◽  
pp. 21-28
Author(s):  
Lenuța Cîndea
Keyword(s):  
Electron Beam ◽  
Welded Joints ◽  
Electron Beam Welding ◽  
Steel Pipes ◽  
Knowing That ◽  
Mechanized Welding ◽  
Mechanical Metallurgy ◽  
Welded Seam ◽  
Local Hardening

This paper analyzes the quality of welded joints of high temperature resistant steel pipe at electron beam welding, knowing that the mechanical properties of these types of steels are influenced by the interaction of different processes specific to physical and mechanical metallurgy. Analyzing the values of the local hardening estimator ΔHV10 calculated between the characteristic areas of welded joints, it is observed that it has a decreasing tendency at thermally de-stressed joints, in all areas of the welded joints, especially in the welded seam.

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