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Thread: spray welding

  1. #1
    Join Date
    Nov 2006
    Location
    Greeneville TN,
    Posts
    91

    Default spray welding

    What can anyone here tell me about spray and pulse arc spray welding?
    I understand that pulse arc is for thinner metal. but what is it in general and what if any special equipment do I need?

  2. #2
    Join Date
    Jun 2006
    Location
    Calgary, Alberta
    Posts
    377

    Default

    Spray welding offers the highest deposition rate of all GMAW process'. To spray weld, the voltage generally has to be around 30V or higher, for a solid wire. Steel vs. aluminum varries. Some gas mixtures help with the spray arc, but higher voltage can sometimes force the metal transfer into spray. Spray transfer is best suited for horizontal and flat welds, where high travel speeds and deposition can be used. Pulsed spray, allows the puddle to cool intermitantly and is used not only for controlling heat in thin sections but allows the use of the spray arc in the vertical and overhead positions. No special equipment is needed for regular spray, as long as the machine has the capacity to get up into the voltage range. Pulsed spray uses add-ons to existing equipment or equipment designed for pulsed MIG.
    Jonny

    Dynasty 300DX
    Esab PCM 1000

  3. #3
    Join Date
    Mar 2007
    Location
    Oahu, Hawaii
    Posts
    2,469

    Default

    thanks Johnny,
    someone said the MM251 isn't strong enough to spray. Do you know anyone that at least tried it?
    I'm not late...
    I'm just on Hawaiian Time

  4. #4
    Join Date
    Sep 2005
    Posts
    839

    Default

    Quote Originally Posted by Bert View Post
    thanks Johnny,
    someone said the MM251 isn't strong enough to spray. Do you know anyone that at least tried it?

    Bert Who ever told you that doesn't know what they're talking about. The MM 251 does real well in spray transfer mode with an .030 /.035 solid wire and 98/2 oxy or 90/10 COČ shielding gas.

    Here's a sample with 98/2 and .035. Don't remember the settings anymore, I just remember I had unit turned way up beyond what it need to be for the 1/4" material the weld was being ran on. I was just messing around , checking out the level of power the unit was capable of outputting.
    Attached Images Attached Images

  5. #5
    Join Date
    Aug 2006
    Location
    near rochester NY
    Posts
    9,881

    Default

    FWIW;
    the MM212/210 is also capable of getting into spray arc with the proper gas and setting it will also spray arc. so the MM251/252 is well into that area.

    that shore is a nice looking bead.
    thanks for the help
    ......or..........
    hope i helped

    feel free to shoot me an e-mail direct i have time to chat. james@newyorkmetalart.com
    summer is here, plant a tree. if you don't have space or time to plant one sponsor some one else to plant one for you. a tree is an investment in our planet, help it out.
    JAMES

  6. #6
    Join Date
    Aug 2006
    Location
    Raymore Missouri
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    1,920

    Default

    Great weld!!!!!!!!

  7. #7
    Join Date
    Mar 2007
    Location
    Oahu, Hawaii
    Posts
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    Default

    Danny,
    THANK YOU SO MUCH!!! BEAUTIFUL!!!! I was a fool for not trying it for myself!!!!!!!!!!!!!!!!! GREAT JOB!!!!!!!!!!!!!!!!!!!
    I'm not late...
    I'm just on Hawaiian Time

  8. #8
    Join Date
    Mar 2007
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    Oahu, Hawaii
    Posts
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    Default

    Also, I heard spray isn't just for thin stuff, it's also great for thicker material, as penetration is really good...comments?
    I'm not late...
    I'm just on Hawaiian Time

  9. #9
    Join Date
    Aug 2006
    Location
    Raymore Missouri
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    1,920

    Default

    I understand the 210 will spray also. Anybody here know? Also can you explain the gasses needed to spray other than just #'s......what is 98/2 etc.?

  10. #10
    Join Date
    Mar 2007
    Location
    Vero Beach, fl.
    Posts
    761

    Default monte55

    98/2 is 98% argon and 2% co2
    If necessity is the Mother of Invention, I must be the Father of Desperation!

    John Blewett III 10-22-73 to 8-16-07
    Another racing great gone but not to be forgotten.http://video.google.com/videoplay?do...modified&hl=en

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