TIG Welder: Difference between revisions
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=== TIG Brazing / WIG Hartlöten === | === TIG Brazing / WIG Hartlöten === | ||
* can do dissimilar materials; lower temperatures and less distortion | * can do dissimilar materials; lower temperatures and less distortion | ||
* CuSi3 is most common filler (melting point 910 - 1025°C) | * CuSi3 2.1461 is most common filler (melting point 910 - 1025°C) | ||
* gap less than .5mm | * gap less than .5mm | ||
* Parameters: | * Parameters: | ||
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** Power: | ** Power: | ||
** CFM: | ** CFM: | ||
* See also: | |||
** https://www.millerwelds.com/resources/article-library/tig-brazing-with-silicon-bronze | |||
** https://de.wikipedia.org/wiki/L%C3%B6ten#Lichtbogenl%C3%B6ten | |||
== Resources == | == Resources == | ||
* https://reiz-schweisstechnik.de/media/PDF/fibelwig.pdf | * https://reiz-schweisstechnik.de/media/PDF/fibelwig.pdf | ||
Revision as of 11:08, 2022 November 21
Tool
PPE
- filter ( and higher, depending on current)
Welder
- model: xxx
- consumables: xxx
- work envelope: xxx
- manual: xxx
- photo: 100px
- North Forge Fabrication Lab: No
Torch
Torch is a Weldcraft A-150 (WP-17).
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
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
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
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 2.1461 is most common filler (melting point 910 - 1025°C)
- gap less than .5mm
- Parameters:
- Tip shape: blunt
- Polarity: consider positive, since it has shallower and wider effect
- Setting:
- Power:
- CFM:
- See also:
