For Jim Colt....Cut Angularity

[Loyd]

Jim,
Every once in a while my parts will come out with extreme angularity. What am I doing wrong?
Hypertherm 1250 w/T80m
Deflector 120979
Nozzle 120980
Ret. cap 120928
Electrode 120926

5/16 mild steel
Cut hgt. .067
Pierce .75
Cutting speed 60 ipm and 35 ipm very little difference
Amps approx. 95% of 80 amps
Air pressure 70-75 psi
Two water separators then Motoguard filter
22.5 deg. angle

[jimcolt]

As I'm sure your torch is perpendicular to the plate you either have:

- A damaged nozzle orifice (should be obviously notched or ovaled if viewed with a magnifier)

- A damaged or clogged shield (again...should be obvious)

- A damaged or worn out retaining cap

-A missing torch body oring

-A restriction in air flow to the torch (debris stuck in a fitting, pinched or cut torch air hose)



Jim

[Loyd]

Jim,
Thanks for getting back with me. I appreciate your expertise and Hypertherm's willingness to allow you to perform this service to all of us. It means a lot. I will check out all the above and post the results.
Loyd

[ctorres3120]

Loyd,pierce height is 0.75 ", (3/4")?
Carlos

[Loyd]

Actually the .75 is time for pierce.
I changed to 60 amps shielded and it cut great.....go figure. The 80 amp nozzle would "blow out" almost immediately for some reason. The hole would ellipse if that makes any sense....
Loyd