"Tig Welding might not be as fast as mig, but it is much more versatile. Just by switching rods, you can go from carbon to stainless to inconel to titanium. "
Gas Tungsten Arc Welding (GTAW) is called TIG welding by welders. Old timers still call in Heliarc. Some people insist on trying to call it Gas tungsten arc welding (GTAW) saying that the term TIG is incorrect. I’m cool with that. The whole thing is kind of ridiculous, like arguing the difference between the words motor and engine. Welders will always use the term they are comfortable with, the one they learned first.
Tig Welding aluminum requires Alternating current (except in very rare cases...click here to see a video using DCEN and helium to weld aluminum.
one of the best things that will help you tig weld stainless steel is a gas lens.
and when you need to extend your electrode it can be a game changer
TIG, welding can sometimes be done without using Filler metal but this only works in certain applications...like food service code welds on kitchen equipment where looking smooth and clean is sometimes more important than weld strength.
Most of the time filler metal is used to allow for a full strength weld.
The techniques used in TIG are similar to those used in Gas welding because both hands are used in manipulating the torch along with the filler rod.
TIG is just better.
TIG pinpoints the heat much better and a foot control is often used to regulate amperage. There are dc and ac/dc power units with built-in high frequency generators designed specifically for TIG. These automatically control gas and water flow when welding begins and ends.
If the torch is water-cooled, a supply of coolant is necessary (It is best to use a coolant recommended by the manufacturer in order to get the best performance and longest life from your torch).
TIG Torches are made so that electrodes and gas nozzles can readily be changed. Automated TIG welding equipment may include devices for checking and adjusting the welding torch level, equipment for work handling, provisions for initiating the arc and controlling gas and water flow, and filler wire feed mechanisms.
2% Lanthanated Tungsten Electrodes...as good as thoriated without the Radioactive thorium
I stuck with 2% thoriated for a long time. It worked but on A/C the tip kind of got jacked up at high amperage. I tried 2% lanthanated and learned that it works great and even better on A/C. And For TIG inverters like the Miller Dynasty 200dx or the Lincoln Invertec v205t, it is Da shizz. because it holds up really well at high frequencies like 120-150 HZ.
It stays sharp on DC too.
The only drawback is that is does not break easily...you have to cut it with a grinder. It is not as brittle as thoriated. But if there is anything to the caution about radioactivity, (I still haven't bought in) then it is definitely worth swapping over to lanthanated. Its a rare thing that a safer substitute works as good or better than the real deal.
Carbon and low alloy steels
Stainless steels like 304, 316,321. 17-4, 410
Nickel alloys like Inconel, Hastelloy, Waspalloy etc.
Aluminum alloys like, 3003, 5052, 6061
Cobalt alloys like Haynes 188, and L605
Refractory alloys like columbium, molybdenum, tungsten
Copper alloys like aluminum bronze , nibral bronze, pure copper
Items that are commonly welded with the TIG process are:
DOM tubing, 1018 sheet metal, Root passes in piping systems, Castings, Tool and die, Injection molds
Food service and kitchen equipment, Aerospace components, Surgical and pharmaceutical components, Automotive exhaust and other components, Nuclear piping and components,
Surgical and pharmaceutical components,
Heat treat oven components, exhaust collectors
Aerospace ducting and other components,
Boats and boat props,
Tanker trucks, tuna towers
Aerospace gearboxes, some ducting, and other components, Old Volkswagen engine parts, Some Chainsaw housings,
Aerospace Fan blades, ducting, and other components Piping for ocean applications, Golf clubs, Helicopter turbine components, Race car parts,
Aerospace hot section engine components,
Hard facing applications for earth moving and mining, Wear resistant surfaces for manufacturing,
Nibral bronze marine components and boat propellers, Aluminum bronze valve bodies, Bronze and brass castings, Pure copper
When it comes to Tig equipment, Miller tig welding machines are hard to beat. I am sure other manufacturers of TIG equipment make quality tig welding machines but what about service? I believe Miller provides better service than any other brand.
I base this on years of experience and from talking to users of all brands of tig welding equipment. I still recommend the good ole syncrowave 250. Take my advise and look on ebay or craigslist. Sometimes You can pick one up for less than 2000 bones. Even better when a cooler is included. A Bargain.!!
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