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Steel Making

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

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

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

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

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

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

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

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

Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

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

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

Air-hardening Steels
These steels are recommended for boring, turning and planing...

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

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

Annealing
ANNEALING can be done by heating to temperatures ranging from...

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

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

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

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...



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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