Tig Welding Stainless Steel Pipe Amperage

Tig root pass on carbon steel pipe 07 27 2009 06 29 pm.

Tig welding stainless steel pipe amperage. Tig root and hot pass 6 inch sch 80 6g pipe steel walking the cup tig root pass pushed in after hot pass proper tig weld open root weld penetration common problems with open root tig welds when it comes to open root tig welds there are some common problems but all of them are easy to fix. This is basic set up information if you have questions please leave it in the comments sections. The amps required to weld stainless are about 10 lower than the amps used for mild steel. Ease of use easier to use products through auto settings and better visibility.

Beginners might find the stainless chart handy for mild steel the lower amps will compensate for a slower travel speed. Recommended shielding gas for short circuit stainless steel mig welding is a tri mix shielding gas. Sanitary stainless pipe welds. Especially on stainless gravity makes it even easier.

For stainless steel welding you should purge to an oxygen level of 0 1 1 000 parts per million. However this does not mean that you should turn down your amperage. Learn more about welding product technologies and solutions and which products feature them. Shielding gas 90 of applications can be done with 100 argon.

The more heat you put into stainless steel tig welding the worse your weld will look and the more your project will warp. In our fab shop we have the luxury of using a o2 sniffer that we use in confined space entry cases. Lincoln electric how to gtaw tig weld stainless steel. I am fairly new to welding at least pipe.

How to purge with ar. I can t find much down and dirty information about proper weld preparation and argon purging technique. Stainless is less thermally conductive than mild steel so heat does not flow away from the weld quite so quickly. Carbon steel stainless steel and aluminum can all be welded using pure argon shielding gas.

By andy boonville i m trying to learn how to tig weld sanitary stainless pipes usually 1 5 to 2 diameter at the brewery where i work. When welding stainless steel use dcen polarity and 2 thoriated tungsten. I am currently trying to get my certs for pipe so i can get a job up north at the chevron oil refinery but im having some trouble getting enough penetration on the root. Purging is normally carried out with argon gas as it is totally inert and as it is readily available in the welding environment.

This will require traveling much slower and therefore produce more heat input on an overall scale.