Plasma gun SG-100

[Panf]

Hello!

Any body used plasma torch SG-100 by Praxair (or Thermach) with "Mach I" nozzle?
Tell me please what gases nead for this equipment and theirs flow rate.
I was try work with Ar and H2, and I can't take "Mach I" - only subsonic flame

Thanks.

[Steph]

I use Ar & He but it should work with your gases as well.

As for the flows, what are you spraying and can you supply me with the exact hardware you are using?

Steph.

[Gordon]

Hi Steph

to the Surface Engineering Forum and thank you for your contribution.

Hi Panf

Not to knowledgable on the SG-100, but generally Ar/He is used for the higher velocity spraying.

[Panf]

Hi Steph
I have GTV console MF-P-1000 with power supply 1000A/100V
Anode 2083-155, Cathode 1083-112, gas injector 1083-113
and I want to spray Cr2O3.
to my knowledge, voltage on gun must be 30...40V (correct my, if I wrong), but I have 60V with 50LPM Argon only.
Why it's may be?

[derek]

The Praxair's Technical data asked to use the parameter to spray Cr2o3 as below:
Anode:2083-720, Cathode:1083A-720, Gas injector 1083-113.
Ar: 87 SCFH, H2:2-3 SCFH, A:450, V:39-41.

If you still want to use the "Mach 1", try He as second gas,please.