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Steel Making

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

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

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

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

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

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

Annealing Work
With the exception of several of the higher types of alloy s...



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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