Glossary entry (derived from question below)
German term or phrase:
ruhender Luft abgekühlt
English translation:
allowed to cool in still air
Added to glossary by
David Moore (X)
Mar 31, 2003 11:12
21 yrs ago
German term
ruhender Luft abgekühlt
German to English
Tech/Engineering
Metallurgy / Casting
Nach Erreichen der vorgegebenen Anlaßzeit wird das Bauteil aus dem Ofen entnommen und an ruhender Luft abgekühlt.
Proposed translations
(English)
5 +5 | allowed to cool in still air |
David Moore (X)
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4 +1 | air cooled at room temperature |
mchd
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4 +1 | cooled in static air |
Gillian Scheibelein
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5 | cooled in still air |
Kay Fisher (X)
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2 | cooled in air at rest |
Edith Kelly
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2 | left to cool (down) at room temperature |
jerrie
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Change log
Feb 15, 2016 15:49: Steffen Walter changed "Field (specific)" from "(none)" to "Engineering: Industrial"
Feb 15, 2016 15:50: Steffen Walter changed "Field (specific)" from "Engineering: Industrial" to "Metallurgy / Casting"
Proposed translations
+5
19 mins
Selected
allowed to cool in still air
This is my offering.
3 KudoZ points awarded for this answer.
Comment: "Thank you for your suggestions."
8 mins
cooled in air at rest
analogue to ruhende Flüssigkeit = liquid at rest e.g. Kucera
9 mins
left to cool (down) at room temperature
perhaps?
or just .. left to cool down
or just .. left to cool down
Peer comment(s):
neutral |
Kay Fisher (X)
: It makes a difference whether the air is moving or still -> different cooling rate and consequently (possibly) different steel microstructure
1 hr
|
+1
42 mins
air cooled at room temperature
is what I noticed in English standards
Peer comment(s):
agree |
Simon Oliver
25 mins
|
neutral |
Kay Fisher (X)
: It makes a difference whether the air is moving or still -> different cooling rate and consequently (possibly) different steel microstructure
28 mins
|
+1
3 hrs
cooled in static air
usual technical term for "ruhend" = static (not "at rest" or "still")
--------------------------------------------------
Note added at 2003-03-31 14:23:46 (GMT)
--------------------------------------------------
The opposite (with a fan) = forced cooling
see ref.: http://www.innescorp.com.au/phpdocs/prodlist_cat.php?CatID=T...
--------------------------------------------------
Note added at 2003-03-31 14:23:46 (GMT)
--------------------------------------------------
The opposite (with a fan) = forced cooling
see ref.: http://www.innescorp.com.au/phpdocs/prodlist_cat.php?CatID=T...
Peer comment(s):
agree |
Kay Fisher (X)
: try any of the data sheets on Timken, Crucible or Böhler tool steels. They all say to cool in "still air". e.g.: http://www.timken.com/products/specialtysteel/engineering/te...
2 hrs
|
maybe, but static is still the correct technical term!
|
5 hrs
cooled in still air
Sorry to repeat an answer which someone else has already given, but I wanted to put in the full references for the reply I gave to Gillian.
The first two companies I listed are American-owned companies.
The Crucible reference:
http://www.crucibleservice.com/datash/dss90v7.pdf
"Annealing
Heat to 1650° F (900°C), hold 2 hours, slow cool at a maximum rate of 25° F (15°C) per hour to 1100° F (595C°), then furnace cool or *cool in still air* to room temperature."
The Timken reference
http://www.timken.com/products/specialtysteel/engineering/te...
"Quenching: Air, warm oil, or pressurized gas.
For air cooling, *cool in still air* to 150-125°F (66-51°C).
Sections 10 inches (254 mm) thick or more must be quenched at a faster rate, using one of the methods below, to attain maximum hardness.
For pressurized gas, a minimum quench rate of 300°F per minute (167°C per minute) to below 1000°F (538°C) is critical to obtain the desired properties.
For oil, quench until black, about 900°F (482°C), then *cool in still air* to 150-125°F (66-51°C).
For salt maintained at 1000-1100°F (538-593°C), equalize in the salt, then *cool in still air* to 150-125°F (66-51°C)."
If you want a British reference, here's one from Carrs:
http://www.carrs-tool.co.uk/products/53srSpec.htm
"QUENCHING
(1) Quench in Salt Bath at 540/560°C. Allow to equalise and cool in still air - ALTERNATIVELY
(2) Cool in still air.
Note: In order to obtain a slightly higher hardness figure large sections may be blown, providing this can be done uniformly with dry air. Tools should be tempered immediately whilst still hand warm."
Here's a reference for the heat treatment of a carbon steel. Same thing.
http://www.precisionmarshall.com/s-7.html
"HEAT TREATMENT Preheat thoroughly at 1200-1300°F and raise to hardening temperature of 1725°F. Hold for one hour and *quench in still air*. Upon reaching 150°F, steel should be tempered without delay."
Points should still go to the guy with the same answer who posted first.
The first two companies I listed are American-owned companies.
The Crucible reference:
http://www.crucibleservice.com/datash/dss90v7.pdf
"Annealing
Heat to 1650° F (900°C), hold 2 hours, slow cool at a maximum rate of 25° F (15°C) per hour to 1100° F (595C°), then furnace cool or *cool in still air* to room temperature."
The Timken reference
http://www.timken.com/products/specialtysteel/engineering/te...
"Quenching: Air, warm oil, or pressurized gas.
For air cooling, *cool in still air* to 150-125°F (66-51°C).
Sections 10 inches (254 mm) thick or more must be quenched at a faster rate, using one of the methods below, to attain maximum hardness.
For pressurized gas, a minimum quench rate of 300°F per minute (167°C per minute) to below 1000°F (538°C) is critical to obtain the desired properties.
For oil, quench until black, about 900°F (482°C), then *cool in still air* to 150-125°F (66-51°C).
For salt maintained at 1000-1100°F (538-593°C), equalize in the salt, then *cool in still air* to 150-125°F (66-51°C)."
If you want a British reference, here's one from Carrs:
http://www.carrs-tool.co.uk/products/53srSpec.htm
"QUENCHING
(1) Quench in Salt Bath at 540/560°C. Allow to equalise and cool in still air - ALTERNATIVELY
(2) Cool in still air.
Note: In order to obtain a slightly higher hardness figure large sections may be blown, providing this can be done uniformly with dry air. Tools should be tempered immediately whilst still hand warm."
Here's a reference for the heat treatment of a carbon steel. Same thing.
http://www.precisionmarshall.com/s-7.html
"HEAT TREATMENT Preheat thoroughly at 1200-1300°F and raise to hardening temperature of 1725°F. Hold for one hour and *quench in still air*. Upon reaching 150°F, steel should be tempered without delay."
Points should still go to the guy with the same answer who posted first.
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