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  1. 2nd October 2010, 10:10 PM #1
    RustyArc
    RustyArc is offline SENIOR MEMBER
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    Default MIG Feed Settings - help?

    I have a UniMig 165 inverter MIG/Stick welder - it's a great machine, and I'm tempted to say it does an even nicer stick weld than my little BOC Smootharc 130. However, while the correct amp settings for stick are pretty straightforward (even if the correct polarity isn't quite so clear ) there is no guide on the machine or in the manual as to what feed rate to use in MIG mode.

    Looking around the net, it seems that the wire feed rate kind of corresponds to amperage, which relates to the thickness of the material being welded. What I can't find is a guide that sets out the two.

    I have it loaded with 0.8mm flux cored wire, the feed rate ranges from 1.5 to 14 metres/minute (voltage goes from 11-26, but that is pretty easy to adjust to the correct setting).

    Does anyone know of a guide/chart that relates wire feed rate / amps / steel thickness?
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  3. 3rd October 2010, 01:26 AM #2
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    NewLou
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    Here ya go

    http://www.millerwelds.com/resources/calculators/

    http://www.millerwelds.com/resources...calculator.php

    Regards Lou
    Just Do The Best You Can With What You HAve At The Time
  4. 3rd October 2010, 11:45 AM #3
    RustyArc
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    Quote Originally Posted by NewLou View Post
    Here ya go
    Cheers Lou. Just got to convert them US "furlongs per eon" units to something meaningful

    Hmm. They don't seem to think you can weld 3.2mm steel with 0.8mm wire
  5. 22nd October 2010, 11:51 PM #4
    Karl Robbers
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    You could weld 32mm plate with .8 wire if you wanted to - lots of runs to fill the joint.
    You don't need a table.
    1- Set your voltage.
    2- Adjust the wire feed until you get the desired result, this can be done whilst you are welding.
    This procedure also applies to gas shielded mig welding. In fact you are not mig welding you are FCAW (flux cored arc welding as opposed to GMAW gas metal arc welding aka MIG welding.
    As with all forms of welding particularly GMAW and FCAW use the highest power that you can handle and that gives the desired result.
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