Ck Micro Torch problems
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  1. #1
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    Ck Micro Torch problems

    Hey guys, been lurking around here for a while but just made an account since I couldn't find much info on this torch. Just recently got the water cooled CK micro torch and I'm not super happy with my welds with it so far. All of my welds are coming out a really dull grey and I will occasionally get spots where it starts getting spattery (like Im welding with 6010) and I'm left with a lot of porosity. Ive got pure argon flowing at 5CFH and even that seems a bit high because the puddle looks like its being blown around. Welding on a chunk of scrap 1\8" mild steel, flap wheeled then wiped with acetone. Machine is a Miller syncrowave 250 (early 2000s model) running around 100 amps but controlled with foot pedal. It seems like I either need a gas lense or maybe a bigger cup but as far as I can tell they dont make either for this torch. Anybody have any tips for this torch?

    Thanks

  2. #2
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    Re: Ck Micro Torch problems

    I've never really used mine except for one time. I could have used my 24, but I used the Micro for the hell of it. With a #4 cup, you can expect the bead to oxidize if the "space" itself is not very "enclosed" to trap argon. Any larger of a cup, and it wouldn't really be a Micro torch, IMO. It could be that your regulator/flowmeter is out of whack, and is really flowing a lot more than 5 CFH. What happens when you cut that shielding gas flow in half? Does it still look like the puddle is being blown around?
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  3. #3
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    Re: Ck Micro Torch problems

    Way to many amps that torch is made for real low amps welding real thin metal.
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  4. #4
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    Re: Ck Micro Torch problems

    Any less than 5cfh and I get contamination right away. I believe I do have a very very small gas leak somewhere though that may be contributing to the problem. And by slow I mean it takes about a day for the pressure to drop to 0 with the tank valve off. Could this be enough to affect it? Never had any problems with my old torch but then again id run that around 15cfh. The torch is designed to go up to 140 amps at 100% duty cycle.

  5. #5
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    Re: Ck Micro Torch problems

    Quote Originally Posted by ODB View Post
    Any less than 5cfh and I get contamination right away.
    I think it's trying to tell you something. Get that leak fixed.

    George, whether it's a smart idea or not is another topic for discussion, but the water-cooled micro torch is indeed rated for 140A by CK. I would say, it's for welding in enclosed spaces, not necessarily low-amperage.
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  6. #6
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    Re: Ck Micro Torch problems


    ODB


    Quote Originally Posted by ODB View Post
    Welding on a chunk of scrap 1\8" mild steel, flap wheeled then
    wiped with acetone . . . Anybody have any tips for this torch?
    There is probably nothing wrong with the torch. If your weld coupon
    is hot-rolled the weld problem is likely due to insufficiently stripped
    mill scale.

    Acetone does nothing, and flappers perform poorly on mill scale;
    they polish more than strip.

    3M produces very efficient stripping wheels. I discovered these
    about 15 years ago, and haven't found anything better.

    A big benefit: the mill scale is stripped, and the parent metal is
    virtually unabraded.

    http://solutions.3m.com/wps/portal/3...3242405&rt=rud

    The wheels are open cell - so they don't load. A 6" wheel in a die
    grinder makes short work of weld areas, and they are adequately
    long lived - $10.00 to $15.

    You should/must remove all the scale on the weld bead. A wire
    wheel in die grinder is a must - the stripping wheels don't work
    well on irregular surfaces.


    Opus

  7. #7
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    Re: Ck Micro Torch problems

    Any tips for finding the leak? I've gotten bored a few times and sprayed everything down with soapy water trying to find it but have never had any luck.

  8. #8
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    Re: Ck Micro Torch problems

    Quote Originally Posted by Oscar View Post
    I think it's trying to tell you something. Get that leak fixed.

    George, whether it's a smart idea or not is another topic for discussion, but the water-cooled micro torch is indeed rated for 140A by CK. I would say, it's for welding in enclosed spaces, not necessarily low-amperage.
    Missed the part about being water cooled.
    HF 95136 Plasma Cutter
    2015 AHP 200X

    www.georgesplasmacuttershop.com

    Tec.Mo. Wholesale Distributor and Dealer
    Consumables for the PT and IPT torch's.

  9. #9
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    Re: Ck Micro Torch problems

    Quote Originally Posted by OPUS FERRO View Post

    ODB




    There is probably nothing wrong with the torch. If your weld coupon
    is hot-rolled the weld problem is likely due to insufficiently stripped
    mill scale.

    Acetone does nothing, and flappers perform poorly on mill scale;
    they polish more than strip.

    3M produces very efficient stripping wheels. I discovered these
    about 15 years ago, and haven't found anything better.

    A big benefit: the mill scale is stripped, and the parent metal is
    virtually unabraded.

    http://solutions.3m.com/wps/portal/3...3242405&rt=rud

    The wheels are open cell - so they don't load. A 6" wheel in a die
    grinder makes short work of weld areas, and they are adequately
    long lived - $10.00 to $15.

    You should/must remove all the scale on the weld bead. A wire
    wheel in die grinder is a must - the stripping wheels don't work
    well on irregular surfaces.


    Opus
    Hmm I have some of those wheels around somewhere but I always figured the flap wheels do a better job. Ill try it out with one of those but ive never had any problems in the past using flap wheels.

  10. #10
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    Re: Ck Micro Torch problems

    Okay just went back and tried messing around with different length stick out of the tungsten and found it worked best with the tungsten just barely past the end of the cup. Ran a few beads that looked okay and then back to spatter and porosity. Here's a pic of 2 welds with exact same settings. This is a peice of 2x4 tube 1/4" I believe. Cleaned with the type of wheel recommended above and then wiped with acetone.

    Sorry for the quality, taken with my phone.

  11. #11
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    Re: Ck Micro Torch problems

    That's definitely oxygen present in the shielding gas. If you have not found an external leak, it might be internal---to the machine. Could be the solenoid or near the solenoid, or somewhere thereabouts.
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