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

If you possibly could do it and do it well, you are the man and you will probably never go hungry. However it takes some awareness of detail to make it happen right.

The most important thing that separates the boys from your boys or do i need to say, the genuine welders through the rod burners will be the willingness to follow procedures for welding stainless-steel. Procedures like waiting for the pipe for cooling among passes, keeping the hot tip from the rod shielded with argon, snipping the end in the tig welding rod in the event it gets crapped up, maintaining your tungsten sharp.

One of the many procedures Come on, man is PURGE. Stainless absolutely should be purged with argon gas in order to prevent sugaring. Sugaring is additionally called granulation however it is severe oxidation regardless of what you refer to it.

You cant even make do with tack welding lacking any argon purge that shield the trunk side or inside of the pipe. Exactly how do you get it done? How would you protect the trunk affiliate with argon?

Usually it’s done with aluminum duct tape. The ends of a metal pipe are taped shut along with the whole inside is purged with argon gas. The opening inside the pipe joint is taped to ensure argon can fill the whole pipe and push out any oxygen. The tape is peeled back ample to secure a tack after the pipe is purge enough.

What’s enough? The only method to tell for sure is by using an oxygen analyzer. A bic lighter won’t have the desired effect. Even 2% oxygen content will blow out a bic lighter. And 2% oxygen will result in a black root pass.

There are several other serious approaches to check the purge but an oxygen analyzer could be the sure way.

Here are a few tips that will help you get a full purge about the stainless steel pipe you weld.

Ensure there isn’t any water inside the pipe…even if it’s just a drop. One 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 can find. Imagine argon as if it was water. Because it is heavier than air, it’s going to refill any space like water, displacing the environment as it fills every nook and cranny.

More purge gas flow isn’t necessarily better. An increased and turbulent flow of argon will not likely necessarily purge a pipe quicker than a lower flow rate. Plus a diffuser about the end of the end of the argon hose usually allows you to utilize a higher flow rate. A homemade diffuser can be produced with many metal wool , some perforated stainless sheet, as well as a amount of sheet metal.

Once you verify a fantastic purge, you are prepared to tack. Peel the tape back adequate to tack and let cool a lttle bit and re tape. Then tack again 180 degrees apart. Continue until all tacks are in place.

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