How To Get Good Color Tig Welding
This process of oxidization and varying levels of heat applied will lead to a variety of colors in the weld.
How to get good color tig welding. In cladding applications then the manual gas valve might be quite adequate. Perhaps the most important skill needed for TIG welding is moving the torch in a controlled manner with steady forward movement while keeping the gap between the tip of the electrode and the base metal consistently small. The formula to calculate the heat input is 60xAmpsxvolts 1000 x travel speed in inmin KJin.
18 steel and stainless coupons. They work by directing the flow of the shielding gas to the molten weld pool. The first titanium weld color is straw followed by brown then brownish blue purple blue green and blue dull salmon pink gray and white oxide.
Tungsten for tig welding is color coded. Also you may be a little too concerned about penetration. For TIG welding arc starting is a major consideration.
For beginning with TIG welding practicing with 116 to 18 inch thickness is a good start. There are some intermediate colors too and here is the progression. For rarer things like aluminum or exotics it will take 200 hours to get decent.
Once again for simplicity all you need is to have pure tungsten for aluminum and either thoriated or ceriated tungsten for steel and stainless. Assuming they already had welding skills and basic shop knowledge. I know great welders who use higher heat levels but move MUCH faster than average and their welds are silver to gold in color and look like a stack of dimes.
In other cases 2 Thorium tungsten can be used. When TIG welding using either AC or DC select the appropriate size and type of tungsten electrode for. Ive got a good handle on aluminum but trying to figure out mild steel and stainless.