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Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Compensating Leads
By the use of compensating leads, formed of the same materia...

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

Manganese
MANGANESE is a metal much like iron. Its chemical symbol is M...

Impact Tests
Impact tests are of considerable importance as an indication ...

Refining The Grain
This is remedied by reheating the piece to a temperature slig...



Quenching The Work






Category: CASE-HARDENING OR SURFACE-CARBURIZING

In some operations case-hardened work is quenched from the box by
dumping the whole contents into the quenching tank. It is common
practice to leave a sieve or wire basket to catch the work, allowing
the carburizing material to fall to the bottom of the tank where it
can be recovered later and used again as a part of a new mixture.
For best results, however, the steel is allowed to cool down slowly
in the box after which it is removed and hardened by heating and
quenching the same as carbon steel of the same grade. It has absorbed
sufficient carbon so that, in the outer portions at least, it is
a high-carbon steel.





Next: The Quenching Tank

Previous: Effect Of Different Carburizing Material



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