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Steel Making

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

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

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

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

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

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

Piston Pin
The piston pin on an aviation engine must possess maximum res...

Annealing
There is no mystery or secret about the proper annealing of d...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

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

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

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

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

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

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Heating
Although it is possible to work steels cold, to an extent de...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

Hardness Testing
The word hardness is used to express various properties of me...



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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