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Check out the Stainless Steel Pipe Welding

Check out the Stainless Steel Pipe Welding

Metal pipe welding is gravy work. Has been. Always will be.

If you're able to do it and get it done well, you are the man and you may never go hungry. Nevertheless it takes some awareness of detail to acheive it right.

The biggest thing that separates the lads from the boys or can i say, the actual welders through the rod burners will be the willingness to follow along with procedures for welding stainless-steel. Procedures like looking forward to the pipe for cooling in between passes, keeping the hot tip with the rod shielded with argon, snipping the end with the tig welding rod if it gets crapped up, keeping the tungsten sharp.

One of the main procedures I am talking about is PURGE. Metal absolutely has to be purged with argon gas to prevent sugaring. Sugaring is additionally called granulation but it's severe oxidation no matter what you refer to it.

You cannot even make do with tack welding without an argon purge that shield a corner side or inside the pipe. How do we get it done? How can you protect the back affiliate with argon?



Usually it is finished with aluminum duct tape. The ends of the stainless pipe are taped shut along with the whole inside is purged with argon gas. The opening from the pipe joint itself is taped so that argon can fill the entire pipe and push out any oxygen. The tape is peeled back adequate to secure a tack once the pipe is purge enough.

What's enough? The best way to tell for certain has been an oxygen analyzer. A bic lighter is not going to do the trick. Even 2% oxygen content will fly out a bic lighter. And 2% oxygen can lead to a black root pass.

There are many other down and dirty approaches to check the purge but an oxygen analyzer could be the sure way.

Here are a few tips that will help get a good purge on the stainless-steel pipe you weld.

Make certain there isn't any water within the pipe...not a drop. A single drop of water will throw a monkey wrench within your purging until it evaporates. Remember precisely what is in water? Hydrogen and oxygen.
Poke a vent hole within the uppermost place you will get. Imagine argon as if it absolutely was water. Because it is heavier than air, it will fill up any space like water, displacing the environment mainly because it fills every nook and cranny.
More purge gas flow is not always better. A higher and turbulent flow of argon is not going to necessarily purge a pipe quicker than a lower flow rate. Along with a diffuser around the end from the end of the argon hose usually allows you to utilize a higher flow rate. A homemade diffuser can be made with some stainless steel wool , some perforated stainless sheet, along with a amount of sheet metal.
Once you verify a good purge, you're to tack. Peel the tape back adequate to tack and let cool a little and re tape. Then tack again 180 degrees apart. Continue until all tacks have established yourself.

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