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Explore the Stainless Steel Pipe Welding

Stainless steel pipe welding is gravy work. Has been. Always is going to be.
If you possibly could do it and undertake it well, you are the man and you'll never go hungry. Nevertheless it takes some attention to detail to acheive it right.
What is important that separates the boys from the boys or do i need to say, the genuine welders from the rod burners may be the willingness to follow along with procedures for welding stainless steel. Procedures like expecting the pipe for cooling among passes, maintaining your hot tip in the rod shielded with argon, snipping the tip with the tig welding rod if it gets crapped up, maintaining your tungsten sharp.
One of many procedures Come on, man is PURGE. Stainless steel absolutely needs to be purged with argon gas to avoid sugaring. Sugaring is also 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 within the pipe. So how do you undertake it? How will you protect the trunk affiliate with argon?

Usually to control your emotions with aluminum duct tape. The ends of your stainless-steel pipe are taped shut along with the whole inside is purged with argon gas. Even opening in the pipe joint itself is taped so that argon can fill the whole pipe and push out any oxygen. The tape is peeled back just enough to acquire a tack when the pipe is purge enough.
What exactly is enough? The only method to tell without a doubt is with an oxygen analyzer. A bic lighter will not likely do the trick. Even 2% oxygen content will blow out a bic lighter. And 2% oxygen can result in a black root pass.
There are a few other hard core ways to confirm the purge but an oxygen analyzer will be the sure way.
Here are a couple tips that will help get a better purge on the stainless-steel pipe you weld.
Make sure there isn't any water inside pipe...not really a drop. A single drop water will throw a monkey wrench inside your purging until it evaporates. Remember what is in water? Hydrogen and oxygen.
Poke a vent hole inside the uppermost place you can find. Consider argon just as if it absolutely was water. Which is heavier than air, it'll refill any space like water, displacing the environment as it fills every nook and cranny.
More purge gas flow is not always better. A high and turbulent flow of argon will not likely necessarily purge a pipe quicker when compared to a lower flow rate. As well as a diffuser about the end with the end of the argon hose usually lets you make use of a higher flow rate. A homemade diffuser can be achieved with some stainless steel wool , some perforated stainless sheet, as well as a little sheet metal.
Once you verify a good purge, you are prepared to tack. Peel the tape back just enough to tack and let cool a bit and re tape. Then tack again 180 degrees apart. Continue until all tacks have established yourself.
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