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

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

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

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

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

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

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

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Quenching The Work
In some operations case-hardened work is quenched from the bo...

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

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

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

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

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

Drop Forging Dies
The kind of steel used in the die of course influences the he...



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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