Tig welding tips, questions, equipment, applications, instructions, techniques, tig welding machines, troubleshooting tig welding process
Scratch start
Post Reply
Zach_T
  • Posts:
  • Joined:
    Sun Dec 15, 2013 2:48 am
  • Location:
    North Texas

What all metals can you weld with scratch start?
If ya ain't burnin ya ain't earnin
Top
gamble
  • Posts:
  • Joined:
    Mon Mar 07, 2011 1:10 pm

Any of them with an inverter machine.
Top
User avatar
  • Posts:
  • Joined:
    Wed Jan 22, 2014 12:00 am
  • Location:
    Connecticut

True scratch start without high frequency? Only steel and stainless steel. You can't weld aluminum unless you add AC and high frequency.
Multimatic 255
Top
User avatar
  • Posts:
  • Joined:
    Mon May 12, 2014 12:06 am
  • Location:
    Downey, CA

Check Jody's videos... With my "old" Miller Econo-Twin HF, it's a "scratch start" TIG or with the HF remote switch, it has HF start... It's AC/DC and HF through a spark generator. Later came the Econo-TIG, some have been using the Thunderbolt and adding a HF unit for aluminum...
Glen
Miller Dynasty 200DX - Millermatic 350P - Hypertherm Powermax 45 - Hobart Handler 150
Top
gamble
  • Posts:
  • Joined:
    Mon Mar 07, 2011 1:10 pm

Louie1961 wrote:True scratch start without high frequency? Only steel and stainless steel. You can't weld aluminum unless you add AC and high frequency.
Wrong. You can scratch start on aluminum with an inverter without HF.
With a transformer machine you need HF to get past the 0 point or the arc will go out. Not with an inverter with square wave.
Top
Post Reply

Return to “Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding”