Everything You Always Wanted to Know About Steel. . .
But Were Afraid to Ask


Copyright Michelle Applebaum Research, Inc
2003-2006
All rights reserved.
June 2006
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Q

Q-BOP
Modified Basic Oxygen Furnace in which the oxygen and other gases are blown in from the
bottom, rather than from the top.  While the Q-BOP stirs the metal bath more vigorously, allowing
for faster processing, the design produces essentially the same steel grades as the top-
blowing basic oxygen furnace.  Today’s state-of-the-art furnace design combines the previous
technologies:  60% of the oxygen is blown from above, with the rest blown through the bottom of
the vessel.  
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QUALIFICATION TRIALS
The testing required for a new process adopted to make certain grades of steel with exacting
end uses.  In order for the process to become qualified, the steel made by the process must be
tested.  
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QUENCH HARDENING 1
A process of hardening a ferrous alloy of suitable composition by heating within or above the
transformation range and cooling at a rate sufficient to increase the hardness substantially.  The
process usually involves the formation of martensite.
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Source: Weirton Steel Glossary

Source: Dofasco Glossary of Terms

Source: Reliance Steel 10-K

Source: BlueScope Steel Glossary of Terms

Source: Allegheny Technologies 10-K

Source: Alcoa 10-K

Source: Alcan 10-K
                                                                  

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