Lorch t220 arc strength

  1. delta66

    delta66 Member

    Messages:
    61
    Location:
    Ireland
    Have my t220 a few months now and have noticed that when using it I have to adjust my shields (esab origo tech) sensitivity and shade compared to my esab caddy back up machine,at first I thought it was the shield but it it is always stored in the light,if I have to use the caddy I change the shield back to my settings I always used but when back in workshop and using the t220 I have to adjust shield to suit application if not I will get a flick in the shade every so often or it won't change at tall,has anyone one else found this.
     
  2. Munkul Member

    Messages:
    2,090
    Cumbria, UK
    Sure it isn't just a difference in torches, cup size etc?

    DC TIG arc should be the same at a given amperage and arc length no matter the machine... in theory, anyway
     
  3. delta66

    delta66 Member

    Messages:
    61
    Location:
    Ireland
    Nope same make and size torch for both welders
     
  4. matt1978

    matt1978 http://www.uk.masters-of-speed.de/

    What do you mean by settings? You mean shade level or sensitivity?
     
  5. delta66

    delta66 Member

    Messages:
    61
    Location:
    Ireland
    Settings = sensitivity.
     
  6. matt1978

    matt1978 http://www.uk.masters-of-speed.de/

    Aside from UV light Helmets rely on the “electronic noise” that comes from the Arc with DC welding it’s called the DC Ripple

    The higher quality the arc the less ripple it will have and some of the better machines the DC output is almost perfectly flat like the output from a battery.

    That’s why you need to adjust the sensitivity
     
    Brad93 and Munkul like this.
  7. delta66

    delta66 Member

    Messages:
    61
    Location:
    Ireland
    Matt, thanks for your input.
     
  8. Cheesie Member

    Messages:
    145
    Location:
    Lisburn
    Our lights in the workshop mess with the screens, they got me a cheap lid a few weeks ago and It was like being at a rave in the nineties works fine out on site
     
  9. matt1978

    matt1978 http://www.uk.masters-of-speed.de/

    It’s not just cheap helmets. I have an Optrel and the high level lighting makes mine switch too.
     
    Cheesie likes this.
  10. Brad93

    Brad93 M J B Engineering

    Messages:
    8,453
    Location:
    Essex
    Matts hit the nail on the head.

    The Lorch has a smoother arc than an ESAB caddy.

    You should try the new Lorch MicorTig, blimey that’s smooth on DC.
     
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