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

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

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

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

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

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

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

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

Critical Points
One of the most important means of investigating the properti...

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

Connecting Rods
The material used for all connecting rods on the Liberty engi...

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

Chromium
Chromium when alloyed with steel, has the characteristic func...

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

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



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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