Ahead of Stainless Europe shop do want to say there are not a lot of places that will give you the opportunity to learn how to TIG weld thin wall stainless steel pipe. I was fortunate adequate to have Fluor train me and am pretty thankful for being capable to attend their training system! Fluor is the only cause I got to study this talent!
What I can share is that TIG welding stainless steel pipe is not considerably harder than carbon steel pipe. There are a couple of rules to adhere to and you ought to be in a position to pick it up immediately! The guidelines are as follows:
Purge your pipe effectively.
All the things will have to be clean.
Hold your tungsten moving at all occasions.
Allow the pipe to cool ahead of the next weld.
Stainless steel pipe must generally be purged. The outcome from a significantly less than great purge will bring about the root to get contaminated. The slang term applied in the field for root contamination or oxidization is “sugar”. Sugar is brought on from the weld becoming exposed to oxygen in the atmosphere. The weld joint must be taped off and only untapped when you are prepared to weld that portion if the pipe.
In basic TIG welding demands a quite clean weld joint but with stainless steel this is an absolute have to! The tungsten need to be clean. That means cleaning it following just about every restart and pass. The weld joint must be filed ahead of each pass except the root pass. Even the bevel requires to be filed on the hot pass and all colour adjustments will need to be filed to pure metal at all occasions. Failure to file all heat impacted areas will outcome in the filler wire not getting able to flow into the joint smoothly.
Moving your tungsten quickly is extremely significant when TIG welding stainless steel pipe. The trick to stay away from melt by way of and overheating the pipe is to move immediately. From the moment you strike the arc that tungsten demands to be moving. Never start and wait for the metal to heat up before moving. Ideally you want to start three/four of an inch just before the location you will start off adding filler wire also. This will allow sufficient preheat for the filler wire to flow properly. Ideally when the weld is finished it should have a copper colour to it. If it is gray or dark in nature you are employing too a great deal heat or moving also slow!
When it comes to stainless steel the heat this metal absorbs and holds is unbelievable. Now add thin wall pipe to the picture and you have a radiator that is normally ready to overheat! You require to let the pipe to cool adequate that you are in a position to touch it with your bare hand. TIG welding stainless steel pipe demands a lot of waiting for the pipe to cool. It only requires an further inch of weld also soon to ruin the weld joint!