NS Dev
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 posted on 24/2/05 at 02:31 PM |
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Work Question - colour chart for hot steel?
A question has just come up in my little office regarding a colour chart for hot steel, as in the various colours from dull reds through orange and
yellow etc etc.
We have all manner of measuring instruments (infra-red thermometers, pyrometers, thermocouples etc etc) but nothing quite surpasses the speed of the
human eye in looking for colour variation (and thus temp variation) on billet moving at speed in our rolling mill!
Anybody got a link to a useful chart on the net?
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flak monkey
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| posted on 24/2/05 at 02:38 PM |
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Think this is the one you are after....Temperature colour chart:
http://members.optushome.com.au/terrybrown/HeatTemperChartEtc.html
Thats also got the temper colours on too.
David
[Edited on 24/2/05 by flak monkey]
Sera
http://www.motosera.com
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NS Dev
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| posted on 24/2/05 at 02:56 PM |
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That's exactly what we needed!!!
Thanks!!!
(funnily enough we were discussing temper colours on mill rolls too so that's also useful!!)
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Hellfire
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| posted on 24/2/05 at 06:10 PM |
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NS Dev - so you roll toolsteel?
That chart applies only to high carbon steel such as D2. The steel running through a mill is usually low-medium carbon. Not much difference but there
is some...
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flak monkey
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| posted on 24/2/05 at 06:15 PM |
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Out of interest how do you know its for tool steel?
We have been doing all this stuff in our materials and tooling courses. I know there are differences in the temps for different steels. Just come back
from a lecture on tool steels...!
David
Sera
http://www.motosera.com
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NS Dev
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| posted on 28/2/05 at 01:14 PM |
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yes, we roll a lot of toolsteel, but also a lot of lower carbon stuff too.
The material we were looking at at the time in question was 4140 oilfield toolsteel tubing. (well, it was solid billets about to become tubing!!)
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