The application of heat after hardening. the purpose is to relieve some of the hardening strains and also to soften the steel. Tempering is accomplished by heating to some predetermined temperature and followed by any rate of cooling.
Related Terms |
SKIN CONDENSER
Condenser using the outer surface of the cabinet as the heat radiating medium.
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AIR COOLER
A factory-encased assembly of elements whereby the temperature of air passing through the device is reduced.
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CLEAN ROOM
A facility or enclosure in which air content and other conditions (such as temperature, humidity, and pressure) are controlled and maintained at a specific level by special facilities and operating processes and by trained personnel.
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ABSOLUTE ZERO TEMPERATURE
Temperature measured from absolute zero (-459.67°F, or -273.16°C).
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AIR REHEATING
In an air conditioning system, the final step in treatment, in the event the temperature is too low.
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CLOUD POINT
The temperature at which waxy crystals in an oil or fuel form a cloudy appearance.
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REFRIGERATING CAPACITY
The ability of a system to remove heat as compared with the cooling effect produced by melting of ice.
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ABSOLUTE TEMPERATURE SCALE
A scale of temperature measurement in which zero degrees is absolute zero.
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CARBON RESIDUE
Coked material remaining after an oil has been exposed to high temperatures under controlled conditions.
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CRACKING
The process whereby large molecules are broken down by the application of heat and pressure to form smaller molecules.
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