[TheForge] why doesn't cast iron oxidize and burn in the sameway?

[David E. Smucker]

When we had very large plate mill backup rolls that need to be scraped it 
was cheaper to bring in a special contractor to cut them up on site and ship 
the chucks to the scrap yard.  Total roll weight was over 400,000 pounds. 
(220 inch wide aluminum plate mill).

The contactor used tank trucks of liquid O2 and an O2 lance.  Generated a 
large orange cloud of smoke (iron oxide).  They did one at night and a 
neighbor reported to 911 that a airplane had crashed at the plant site.  The 
cutting was done outside.

Dave Smucker
Brasstown, NC

--------------------------------------------------
From: "Andy Gladish" <gladish at cablerocket.com>
Sent: Tuesday, November 02, 2010 11:30 PM
To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
Subject: Re: [TheForge] why doesn't cast iron oxidize and burn in the 
sameway?(was: oil/wax finish, blackened steel)

> Just like when cutting, you can back way off and the O2 jet will keep
> cutting, even thought the preheat cones are too far from the work to do 
> much
>
> -----Original Message----- 
> From: Jerry Frost
> ...you could shut off
> the acet once the steel began cutting and the burning steel did all the
> work. I've never heard of it anywhere else so can't say how true it is.
>
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