RE: [CAD_CAM_EDM_DRO] High pressure water jet (Lasers)

I have done a fair amount of studying of CO2 lasers and the mix is primarily
He, some N, and 5 - 8% C02. The He is essential to help conduct the heat to
the walls of the tube and to pull the CO2 to the proper energy state.

Tim
[Denver, CO]
CO2 laser optics are sitting on my desk shelf!

> I went out to a shop where a guy had an essentially home-made CO2
> laser cutting rig. It was only 50 W, I think, and was used for cutting
> plastics mostly. I think it could cut some metals if they were very thin.
> I'm awfully sure that the gas supply was high purity CO2, with nothing
> added.
>
> > I'm not sure but
> > doesn't He have a lower freezing point than N?
>
> Yes, around 4 K at atmospheric pressure. Nitrogen is 77 K. Oh, sorry,
> you CANNOT freeze Helium. It goes into a superfluid state around
> 1.3 K, but it will not solidify, no matter how cold you go. So,
> those temps
> above are the boiling points.
>
> Jon
>
> FAQ: http://www.ktmarketing.com/faq.html
>