Re: metal cutting problem

"Uncle Al" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Carol Ge wrote:
> >
> > Hello:
> >
> > I have a problem with metal cutting. The task is to cutting one slice
from
> > the end of hot steel (500C) roll and the roll is forbiden to unpack, the
> > cutting must not damage the underlay surface. The steel has quite high
> > hardness and temperature must keep at 500C. Any technology is welcome
that
> > can do this work. Laser cutting, speicial saw, or milling machine.....
>
> If it is an inch in diameter it is not the same as if it is five feet
> in diameter.  Wire saws plus loose grit do wonders for very deep cuts
> in bulk quarry stone and silicon ingots.  The temperature is going to
> be a killer for specifying the wire.  Ditto for an abrasive wheel.
>
> Entrained abrasive in supersonic fluid won't work.  It can't be shear
> cut, laser cut, torch cut, plasma cut... without damaging the cut
> faces.
>
> Eliminate all the methods that cannot work.  Your candidates then
> remain.
>
> --
> Uncle Al
> http://www.mazepath.com/uncleal/
>  (Toxic URL! Unsafe for children and most mammals)
> "Quis custodiet ipsos custodes?"  The Net!

The material is commercial steel coil. The diameter of coil is 2m. The steel
sheet is 2.3m wide. The end part needed to be cut is 2.3x1.5m. The thickness
of steel is from 0.5mm to 25mm. The coil can not unpack. Any liquid cooling
during cutting is impossible.