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Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

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

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

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

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

Care In Annealing
Not only will benefits in machining be found by careful anne...

The Modern Hardening Room
A hardening room of today means a very different place from ...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...



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.





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Previous: Effect Of Different Carburizing Material



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