automatic welders on pipeline - American Welding Society

I was in it  @ one time , but to damn dumb, i never called in to go off & work, some of my buddy's did & they got sent off to Dallas , to put pvc fitting's together(200 years of pipeline experience to glue pvc together HA HA I still laugh), after they came back nobody pursued it anymore ,cause there was alot of work here @ home (pipelines ,Compressor stations,etc.etc.) Here recently I called again to get back in & was set up a date to go test, but I have not got a chance to go ,is one , another is we got a raise , so may main reason for getting back in was for the money , but i'm making more so i put the union on hold for now . As far as my thoughts on working union well i'm 1/2 yah & 1/2 naahhh. I think union is good Cause you have somebody representing you , wont work you to death , blah blah blah , now dislikes well I don't really need somebody to speak for me ( I have never quit a job , & i have never got fired from a job) & I work @ my own pace when i broke out i wanted to leave everybody behind , but then i realized nobody is going to remember how many miles of pipe you put together in a day, much less remember your name so they can try to drag my A$$ but i wont go any faster than i have too. I guess i really got off the subject , I'll tell you what if Shad is rite about a helper making $30.00 an hr. go for it cause I don't think you'll find anybody that will pay that much.That's if you like to tarvel , & not be home w/ that one person or persons that you love or care about. That's my opinion .

Nowadays, orbital pipe welding refers to automated welding of industrial pipes with a rotating electrode around the pipe (or tube). In fact, it has become very popular and manual welders are welcoming these Orbital pipe welding systems. This continuous process around a static workpiece is being used to enhance productivity, safety and project quality. For large projects in demanding conditions like welding pipeline, the demand of contractor in orbital welding, TIG pipe welding and pipe fitting is increasing every day. Here are the essentials to know about pipe to pipe welding.

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 Pipe-to-pipe welding applications with the addition of filler wire are often demanded in the field of energy production (power plants) and chemical or petrochemical industries, where a wide range of base materials are used, such as:

• Plain carbon steel like for Welding pipeline
• Low-alloyed chromium or chromium manganese containing carbon steel
• High-alloyed chromium nickel steel (austenitic or with an austenite-ferrite crystal structure)
• Nickel base alloys (e.g. Inconel®alloys or Hastelloy®-alloys)
• Titanium and its alloys.

Although tube dimensions differ a great deal, the majority is in the range of 26.9 mm and 219 mm (¾" and 8") diameter and 2.77 mm to 12.7 mm wall thickness. Specific orbital pipe welding machine is required for welding such materials with multiple axes and smart management of the welding parameters.

Everything you need to know is here: free download our Free Handbook about orbital welding available in our download section 

or orbital pipe welding with additional filler wire, pipe welding machine with 4 or 6 controlled axes can be used: shielding gas flow, weld current intensity, torch rotation speed, wire feeding speed and in addition with 6 axes, AVC and oscillation.

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In the case of reduced accessibility of the work area, TIG / GTAW power sources with 4 controlled axes should be preferred. If easy implementation of the welding tool is required, the orbital power sources with 6 controlled axes should be the choice that is always recommended. 

This choice of welding with filler wire is used to join pipes of greater thicknesses. Two different methods can be applied: 

• stringer bead technique - This technique can be used by equipment with four controlled axes.  It involves placing narrow weld seams side by side. 

• AVC and oscillation - Equipment with six controlled axes can utilise AVC and torch oscillation to allow movement of the torch laterally. Passes with torch oscillation can then be superimposed and/or laid side by side.
• Electrode Geometry

In automated orbital TIG welding, as AVC requires precise electrode geometry, it must be ensured that the geometry of the tungsten electrodes used, remains unchanged. Even small variations of the shape or dimension could bring about significant changes to the arc voltage used as a base value by the AVC control.

Polysoude specialises in the design, development and manufacture of innovative arc welding solutions. The brand is synonymous with world-leading expertise in 3 core sectors: automatic orbital TIG welding systems, automated TIG and plasma welding solutions and TIGer™ weld overlay.
Situated in Nantes since , the company manufactures a variety of power sources and orbital welding equipment, like a wide range of open and closed orbital weld heads.
Nowadays, as a smart factory-oriented company, Polysoude products are all designed to be ready for Industry 4.0.

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