TIG Welder

Tool

PPE

• filter ( and higher, depending on current)

Welder

(I)

• model: xxx
• consumables: xxx
• work envelope: xxx
• manual: xxx
• photo: 100px
• North Forge Fabrication Lab: No

Cargo:

Categories:

Torch

Torch is a Weldcraft A-150 (WP-17).

• ordered CK Worldwide 2% Ceriated Tungsten (Grey)

Electrodes

Two most common

• Thoriated (red) is what somewhere online recommended for brazing; radioactive, though...
• Ceriated (grey, used to be orange) is what Lawrence recommends for AC and DC; for lower amperage precision work

Cup etc

• CK Worldwide 3 Series Standard Gas Saver Kits - Alumina Cup
• D3GS332

Parameters

Polarity

• Negative side is colder so usually the tool [1]
• Positive makes for shallower, wider affected area [2]
• positive has some cleaning action (as AC would)

AC vs DC

• AC to bust oxides; pretty much always for Aluminum, also for some brass

Current

• setting rule of thumb: 45A/mm thickness DC, 40A/mm thickness AC in Aluminum[3]
• actual voltage potential is function of arc length, higher when longer, so needs to be kept consistent

Gas flow

• CFM: start with 10 8-10 ferrous, 10-15 aluminum [4]
  • confirm if that's L or CFM
• 5-10L [5]

Tip shape

• blunter for AC
• blunter will not go as deep

Joint typws

• square butt joints up to 6mm steel can be butt?
• Flange (Boerdelstoss) where the edge is bent up slightly and used as filler

Resources: [6], [7]

Some sample settings

TIG Welding Aluminum

• Setting:
• Power:
• CFM:

TIG Welding Steel

• Setting:
• Power:
• CFM:

TIG Brazing / WIG Hartlöten

• can do dissimilar materials; lower temperatures and less distortion
• CuSi3 is most common filler
• gap less than .5mm
• Parameters:
  • Tip shape: blunt
  • Polarity: consider positive, since it has shallower and wider effect
  • Setting:
  • Power:
  • CFM:

Resources

• https://reiz-schweisstechnik.de/media/PDF/fibelwig.pdf