(Steel's specific heat) * (volume of steel to vaporize per second) * (temperature difference) = power necessary.
That only works if you don't lose any heat into the surronding metal. You'll need to know the thermal conductivity and boundary conditions of the steel you are cutting along with how long it takes to cut through the door. It's probably easier to use the force to prevent thermal conduction.
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The equation will look like this:
(Steel's specific heat) * (volume of steel to vaporize per second) * (temperature difference) = power necessary.
That only works if you don't lose any heat into the surronding metal. You'll need to know the thermal conductivity and boundary conditions of the steel you are cutting along with how long it takes to cut through the door. It's probably easier to use the force to prevent thermal conduction.If ever a site deserved to be slashdotted http://www.lxkcc1.com/