Re: [CAD_CAM_EDM_DRO] Re: plasma vs laser vs browns gas for cnc router cutting

On Monday 12 January 2004 04:48, turbulatordude wrote:

> > process when cutting thick metal. Its just metal burning in
>
> Oxygen ... as it
>
> > always is ...
>
> The flame is purported to be in the 6,000 degree range so it would
> seem to be considderably higher than acetelene(sp?)

acetylene isn't particularly hot. What 'sells' acetylene is its high energy
.. it carries a LOT of heat (in terms of joules) rather than being at a very
high temperature .. the 'browns gas' is just an oxy-hydrogen flame, its
'hotter' but as I understand it, has a lower energy density.

> and since it also
> is reported to work on aluminum, the cutting is not just the metal
> buring like in steel torch cutting.

not convinced ....

> The old Harbor Freight product, which I think may be discontinued,
> listed the tip as only 1mm wide. That would put the 6,000 degess in
> a 1 mm point. The the huge volume of gas, but actually a small
> volume.

I'll make a wild guess here ... if they are putting 25A at 240V into their
'electrolizer' they will be getting at most 6Kw of energy out (I@ll guess the
efficiency is around 75%, lets say 4Kw out) ... I'm putting about 25Kw into
my plasma, 20Kw of which ends up at the business end. I'll take a guess and
say that the plasma will cut quicker ...

There were no cutting speed charts I could see on the site, if it WAS quicker
they would be shouting about it ...

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