hypertherm 65 FINE CUT help please

[abmagrum]

hi,
I have a new hypertherm 65 with machine torch



are these the right parts for fine cut?



deflector 220955, retaining cap 220854, nozzle 220930, electrode 220842, swirl ring 220857



I am running @ 45 amps 78 volts 200 ipm 0.06 cut height, 0.15 pierce, 16 gauge, water table it cuts horrible half the lines cut through and half just gouge air pressure 110



what am I doing wrong?



thanks

al

[kbenz]

hi,
I have a new hypertherm 65 with machine torch



are these the right parts for fine cut?



deflector 220955, retaining cap 220854, nozzle 220930, electrode 220842, swirl ring 220857



I am running @ 45 amps 78 volts 200 ipm 0.06 cut height, 0.15 pierce, 16 gauge, water table it cuts horrible half the lines cut through and half just gouge air pressure 110



what am I doing wrong?



thanks

al

I have

deflector 220948, retaining cap 220853, nozzle 220930, electrode 220842, swirl ring 220857 but I am running an ohmic sensor.

specs I have call out for 250ipm

hope this helps

[Team Tracker]

This may sound silly but first off check to be sure you have your ground clamp connected to an unpainted surface on your cutting deck or better yet directly on the workpiece given the nature of your problem. Secondly inspect your nozzle and electrode for wear and replace if the orifice is out of round in the nozzle or the electrode has excessive wear. Even if you just put the nozzle in I would check since little blast of moisture in the air line can ruin them right out of the box. Check that the LCD screen on your plasma reads 45 amps and nothing else is on the screen, this will allow the plasma to automatically set the appropriate pressure for the job. Pause your machine mid cut and measure the distance between the torch and the workpiece to determine if you are in fact running the recommended .060" cut height, if not adjust your height controller voltage to higher or lower than your current 78 volts until you are in fact .060" off the material when cutting. As kbenz mentioned youare running a litle slower that the book calls for but it should still cut well. If none of this helps let us know. What table and height controller are you running? Is your water level above the top of the plate?

[jimcolt]

Please provide information:

What brand and model cutting machine?

Have you actually measured the cut height while cutting? What is it?

The cut specs for Fine Cut are for dry cutting....try lowering your water level to an inch or so below the plate.

The variation in cut quality with Fine Cut parts is most often due to incorrect height...generally running too high.


Jim Colt Hypertherm

hi,
I have a new hypertherm 65 with machine torch



are these the right parts for fine cut?



deflector 220955, retaining cap 220854, nozzle 220930, electrode 220842, swirl ring 220857



I am running @ 45 amps 78 volts 200 ipm 0.06 cut height, 0.15 pierce, 16 gauge, water table it cuts horrible half the lines cut through and half just gouge air pressure 110



what am I doing wrong?



thanks

al

[abmagrum]

hi, Jim

I am running a new powermax 65 with duramax torch.

you cant use the water table with fine cut?

this is what I have deflector 220955 , retaining cap 220854 , nozzle 220930 , electrode 220842 , swirl ring 220857

I was told to use shield 220948, instead of the deflector 220955 . would this help?

the water is about an inch low but I will drain it lower.

my other guess was it may be cutting to high.

Reid T told me how to check it. thanks
I check asap

Jim would the shield make a difference? should I wait till I get a shield ? or if everything is correct should the deflector 220955 work?

I will wait for youre reply so I don't burn up more metal

hey K BENZ that's the same shield Scott said to use.

Thanks everyone for youre help

Al

[jimcolt]

You can use the FineCut parts with a water table....however the specs in the Hypertherm manual were developed on a dry cutting table. Water quenches the plasma cutting process and slows it.....water also has a tendency to produce more dross on the parts. You may have to slow the cut speeds 15 to 20% if water is in contact with the cut edge.

Height is extremely important with all plasma cutting processes. It is even more important when using the FineCut consumable and must be maintained within about .010" of the recommended cut height that is listed in your cut charts in the operators manual. Too high....when using the FineCut parts and the plasma will not fully penetrate the material.....water will add to the issues.

So....lower the water to a point where it does not splash on the material....ensure accurate height...and you cutting problem will likely be solved.

The 948 shield is the recommended shield for mechanized cutting with the FineCut consumables. It will not necesarily change the cut quality....but it will make the nozzle orifice last longer.

Jim Colt Hypertherm

hi, Jim

I am running a new powermax 65 with duramax torch.

you cant use the water table with fine cut?

this is what I have deflector 220955 , retaining cap 220854 , nozzle 220930 , electrode 220842 , swirl ring 220857

I was told to use shield 220948, instead of the deflector 220955 . would this help?

the water is about an inch low but I will drain it lower.

my other guess was it may be cutting to high.

Reid T told me how to check it. thanks
I check asap

Jim would the shield make a difference? should I wait till I get a shield ? or if everything is correct should the deflector 220955 work?

I will wait for youre reply so I don't burn up more metal

hey K BENZ that's the same shield Scott said to use.

Thanks everyone for youre help

Al

[abmagrum]

Cool,

THANKS , Jim I read youre hypertherm 65 question (reply) helped a lot.

Thanks
Al

[abmagrum]

Hey, Jim

It was a bad nozzle or electrode. would water destroy it that fast? The water was an inch below sheet metal but it may have splashed up. It didn't even cut one part out. that sucked

Drained the table put new nozzle and electrode in crossed my fingers and it cut perfect.

Now I can concentrate on cutting instead of fixin.

Thanks
Al

[jimcolt]

The water likely had nothing to do with damaging the nozzle. Cutting with the deflector and occasionaly dragging on the plate with the nozzle will cuase rapid nozzle wear/damage. That is why all mechanized cutting should be done using the shield....as mentioned earlier in this thread. The shield double insulates the nozzle and does not allow it to arc to the material being cut.

Jim Colt

Hey, Jim

It was a bad nozzle or electrode. would water destroy it that fast? The water was an inch below sheet metal but it may have splashed up. It didn't even cut one part out. that sucked

Drained the table put new nozzle and electrode in crossed my fingers and it cut perfect.

Now I can concentrate on cutting instead of fixin.

Thanks
Al

[abmagrum]

I set up like the book said hypertherm 65 owners manual page 3-40.

I asked hypertherm if this was correct they said yes. this set up does work the second set worked perfect .

the first set didn't cut any parts .obviously something wrong with it .

and I did ask hypertherm specifically what the best parts and part numbers I needed to run on the 65 for fine cut.
they sent a list with everything. they didn't know what part either. so I guessed.

I ordered the 220948 shield .