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Q: Gas welding, cutting ( No Answer,   2 Comments )
Question  
Subject: Gas welding, cutting
Category: Science
Asked by: san_juan_boater-ga
List Price: $25.00
Posted: 31 Dec 2003 13:21 PST
Expires: 30 Jan 2004 13:21 PST
Question ID: 291911
Regarding Question ID: 290785 
Would like to see the spectrum chart of IR and UV electromagnetic waves
Generated by gas welding and gas cutting. Frequency vs. amplitude

mainly interested in oxy-acet and iron. Since my question I find the
UV is easy to block and am more concerned with IR emissions

If there are common metals that are normally welded or cut other than
iron that emitt more UV or IR I would be interested int the spectrum
given off by them also.

Thanks

Ron
Answer  
There is no answer at this time.

Comments  
Subject: Re: Gas welding, cutting
From: techtor-ga on 31 Dec 2003 20:08 PST
 
San_juan_boater,
You now have two questions that ask basically the same thing. I wonder
which one would you want to have answered, this or the older one?
Perhaps you could cancel or close the earlier question in case you
wouldn't want that to be answered anymore.
Subject: Re: Gas welding, cutting
From: hobnob-ga on 02 Jan 2004 12:24 PST
 
This PDF file: http://www.tempe.mi.cnr.it/zizak/tutorial/cairol06-flame-emission.pdf
(you'll need Adobe Acrobat Reader to view it) contains a number of
emission spectra of various welding flames including oxy-acetylene.
Figures 3, 4 and 5 should be particularly useful, they cover the
spectrum from 800 nm up to about 5 microns in wavelength.

When used on particular materials, there will also be narrow-band
emission lines depending on the material (see figure 1 for nickel, for
instance). However, in the IR the dominant feature of the spectrum
will probably be black-body emission, which will depend on the
temperature that the material is being heated to.

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