Plasma Cutter

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Subject Author Date
Plasma Cutter Bruce 05-30-2007
Posted by Bruce on May 30, 2007, 9:35 am
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I recently bought a Chinese 40 amp. plasma cutter. The "manual" is
pretty rudimentary. I have never owned a plasma cutter and I have a
couple of questions about operating one.

The manual specified air pressure is 4.5 Kg/Cm - about 65 PSI. Does
one vary the air pressure depending on the thickness of the material
being cut?

The machine has an ON/OFF Switch, an Amperage Control Dial 0 - 40 A
and an additional switch, not mentioned the manual, marked "2.5 SS"
and 5.0 SS". Does anyone know what this switch might be?


Bruce in Bangkok
(brucepaigeatgmaildotcom)

--
Posted via a free Usenet account from http://www.teranews.com


Posted by RJ on May 30, 2007, 10:34 am
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>
> I recently bought a Chinese 40 amp. plasma cutter. The "manual" is
> pretty rudimentary. I have never owned a plasma cutter and I have a
> couple of questions about operating one.
>
> The manual specified air pressure is 4.5 Kg/Cm - about 65 PSI. Does
> one vary the air pressure depending on the thickness of the material
> being cut?
>
> The machine has an ON/OFF Switch, an Amperage Control Dial 0 - 40 A
> and an additional switch, not mentioned the manual, marked "2.5 SS"
> and 5.0 SS". Does anyone know what this switch might be?
>
>
> Bruce in Bangkok
> (brucepaigeatgmaildotcom)
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>

The air pressure used stays at the same pressure for all cuts regardless of
thickness. May want to vary it up somewhat to decide what the best pressure
is. I run at 70 PSI. The 2.5 SS and the 5.0 SS switch allows the air to
flow from the nozzel for that many seconds after the trigger is released.
Enjoy!



Posted by Bruce on May 30, 2007, 7:18 pm
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>
>>
>> I recently bought a Chinese 40 amp. plasma cutter. The "manual" is
>> pretty rudimentary. I have never owned a plasma cutter and I have a
>> couple of questions about operating one.
>>
>> The manual specified air pressure is 4.5 Kg/Cm - about 65 PSI. Does
>> one vary the air pressure depending on the thickness of the material
>> being cut?
>>
>> The machine has an ON/OFF Switch, an Amperage Control Dial 0 - 40 A
>> and an additional switch, not mentioned the manual, marked "2.5 SS"
>> and 5.0 SS". Does anyone know what this switch might be?
>>
>>
>> Bruce in Bangkok
>> (brucepaigeatgmaildotcom)
>>
>> --
>> Posted via a free Usenet account from http://www.teranews.com
>>
>
>The air pressure used stays at the same pressure for all cuts regardless of
>thickness. May want to vary it up somewhat to decide what the best pressure
>is. I run at 70 PSI. The 2.5 SS and the 5.0 SS switch allows the air to
>flow from the nozzle for that many seconds after the trigger is released.
>Enjoy!
>

Many thanks for the quick answer.

But why vary the length of time the air flow continues? My
understanding was that the consumables didn't get that hot. Wrong?





Bruce in Bangkok
(brucepaigeatgmaildotcom)

--
Posted via a free Usenet account from http://www.teranews.com


Posted by Pete C. on May 30, 2007, 8:04 pm
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Bruce wrote:
>
>
> >
> >>
> >> I recently bought a Chinese 40 amp. plasma cutter. The "manual" is
> >> pretty rudimentary. I have never owned a plasma cutter and I have a
> >> couple of questions about operating one.
> >>
> >> The manual specified air pressure is 4.5 Kg/Cm - about 65 PSI. Does
> >> one vary the air pressure depending on the thickness of the material
> >> being cut?
> >>
> >> The machine has an ON/OFF Switch, an Amperage Control Dial 0 - 40 A
> >> and an additional switch, not mentioned the manual, marked "2.5 SS"
> >> and 5.0 SS". Does anyone know what this switch might be?
> >>
> >>
> >> Bruce in Bangkok
> >> (brucepaigeatgmaildotcom)
> >>
> >> --
> >> Posted via a free Usenet account from http://www.teranews.com
> >>
> >
> >The air pressure used stays at the same pressure for all cuts regardless of
> >thickness. May want to vary it up somewhat to decide what the best pressure
> >is. I run at 70 PSI. The 2.5 SS and the 5.0 SS switch allows the air to
> >flow from the nozzle for that many seconds after the trigger is released.
> >Enjoy!
> >
>
> Many thanks for the quick answer.
>
> But why vary the length of time the air flow continues? My
> understanding was that the consumables didn't get that hot. Wrong?
>
> Bruce in Bangkok
> (brucepaigeatgmaildotcom)
>
> --
> Posted via a free Usenet account from http://www.teranews.com

They get that hot.

Posted by Bruce on May 30, 2007, 10:46 pm
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wrote:

>Bruce wrote:
>>
>>
>> >
>> >>
>> >> I recently bought a Chinese 40 amp. plasma cutter. The "manual" is
>> >> pretty rudimentary. I have never owned a plasma cutter and I have a
>> >> couple of questions about operating one.
>> >>
>> >> The manual specified air pressure is 4.5 Kg/Cm - about 65 PSI. Does
>> >> one vary the air pressure depending on the thickness of the material
>> >> being cut?
>> >>
>> >> The machine has an ON/OFF Switch, an Amperage Control Dial 0 - 40 A
>> >> and an additional switch, not mentioned the manual, marked "2.5 SS"
>> >> and 5.0 SS". Does anyone know what this switch might be?
>> >>
>> >>
>> >> Bruce in Bangkok
>> >> (brucepaigeatgmaildotcom)
>> >>
>> >> --
>> >> Posted via a free Usenet account from http://www.teranews.com
>> >>
>> >
>> >The air pressure used stays at the same pressure for all cuts regardless of
>> >thickness. May want to vary it up somewhat to decide what the best pressure
>> >is. I run at 70 PSI. The 2.5 SS and the 5.0 SS switch allows the air to
>> >flow from the nozzle for that many seconds after the trigger is released.
>> >Enjoy!
>> >
>>
>> Many thanks for the quick answer.
>>
>> But why vary the length of time the air flow continues? My
>> understanding was that the consumables didn't get that hot. Wrong?
>>
>> Bruce in Bangkok
>> (brucepaigeatgmaildotcom)
>>
>> --
>> Posted via a free Usenet account from http://www.teranews.com
>
>They get that hot.

I feel a bit stupid. I went back to the shop this morning and sure
enough the switch is for the post air delay. (Why didn't I think of
that?)

Adjusted the air pressure to 4.5 Kg./Cm2 and Lo, it cuts like a champ.

Thanks to all that replied.



Bruce in Bangkok
(brucepaigeatgmaildotcom)

--
Posted via a free Usenet account from http://www.teranews.com


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