Tig Welding is the most Versatile Welding Process on the Planet.
“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. “
My “YouTubes Best of TIG” Volume2 is in Stock at Weldmonger.com
TIG Welding Steel…3 things
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.
Aluminum pie cut welds
inside and outside corner welding aluminum
TIG Stainless Steel
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
stainless lap joint .063″ (1.6mm)
Sanitary Stainless tubing weld
6g Pipe Welding Test with Tig root
Tips for Tigging a carbon steel 2f lap joint
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.
Metals that are commonly welded with TIG:
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,
Aerospace components, Surgical and pharmaceutical components, Heat treat oven components, exhaust collectors
Truck boxes, Castings, Aerospace ducting and other components, Wheels, 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
Tig Welding Equipment
When it comes to Tig equipment, Miller tig welding machines are hard to beat. But there are lots of other choices now.
It can be hard to filter out all the sales and marketing talk and get the truth about reliability, performance, and customer service.
Get the best machine you can afford.
But dont think you have to wait to save thousands of dollars to get started.
You can get a functional AC/DC TIG welder for less $1000 even after upgrading to a better torch and foot pedal.
It wont be a Miller, but it will get you started while you save for a better machine.
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TIG welding with a Stick Machine???
You can TIG with almost any DC welding Stick welding machine and you can stick weld with any almost any TIG machine. Why buy a TIG machine then? Well TIG machines, that is welding machines that are specifically designed for TIG welding, simply do it better. They have features like high frequency start, remote amperage control, and solenoid valves for shielding gas. TIG welding with a DC stick welding machine involves scratch starting and using a torch with an argon valve built in. But if you just want to be able to make good looking welds on thin metal and you already have a DC stick welder, you will be surprised at what you can make happen with a scratch start TIG rig.
Oh,, and one more useful tip… If you just need to burn a stick rod or 2… Why bother changing over to a stinger? This really works!
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Does Tig welding have to be so slow?
Tig is always slower if you do it by the book. But why not think outside the box and break the rules? On some metals you can weld pretty fast. Especially if you consider there is no cleanup afterwards.
How do you weld clear anodized aluminum?
Most guys that weld tuna towers and marine parts can give you some tips on this. Most of them hook up a switch on the torch and “bump weld” manually by going from on to off again and again slightly overlapping puddles. This seems to break though the anodized coating. Boat owners will not put up with ugly welds or welds with a bunch of sanding or wire brush marks.
Which rod is the best one for the job?
That’s a really broad question. But here is some good basic information: Carbon steel? But you are not sure exactly which grade? , use e70s2, 3, 4 or 6..er70s2 is the most common and easiest to get at your local welding supply.
Stainless? But not sure which grade? use er308L
Aluminum but not sure what alloy? use 4043 (or 4943 which is a fairly new rod)
Steel to copper? Silicon bronze
Cast iron? Nickel rod or (aluminum bronze using AC)
Carbon steel to stainless steel? ER 309
If the weld is critical, you need to find out exactly what you are welding and use substantiated engineering recommendations for welding rod used.
How can I tell what type metal I am working on?
There are a few good ways to get an idea of what metal type you are dealing with.
First off use a magnet.
If the metal is magnetic it is either carbon steel, cast iron, cast steel, a magnetic grade of stainless steel or severely cold worked stainless steel, or pure nickel.
Not magnetic? Could be practically anything else.
Aluminum, titanium magnesium, copper, cobalt, nickel alloy?
Spark test is another way to narrow it down, but it takes a lot of practice. carbon steels make lots of sparks and the pattern of sparks is different depending on how much carbon content.
300 series stainless sparks a lot less and the sparks are more red.
Titanium sparks like a mother whiz monkey. Bright yellow almost white sparks that stream like several feet.