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Arc or Mig?

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nzrover:

--- Quote from: "karloss" ---

You need 250 amps minimum for spray transfer.
--- End quote ---


160A+ for spray transfer with 0.8mm wire.  My 210A MIG will happily spray transfer with 0.9mm wire.

http://www.esabna.com/EUWeb/MIG_handbook/592mig1_6.htm

oakeedokee:
OK all you welding geeks out there. What the hell is spray transfer? I thought that was something my cat did when marking it's territory!

nzrover:

--- Quote from: "oakeedokee" ---OK all you welding geeks out there. What the hell is spray transfer? I thought that was something my cat did when marking it's territory!
--- End quote ---


Hopefully wither of the below links will explain it for you.  Effectively it means the wire does not touch the workpiece and becomes molten as it leaves the torch.

http://www.twi.co.uk/professional/protected/band_3/jk15.html

http://www.esabna.com/EUWeb/MIG_handbook/592mig1_7.htm

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