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Steel Making

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

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

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

Hardening
Steel is hardened by quenching from above the upper critical....

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

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

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

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

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

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

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

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

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

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

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

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

Conclusions
Martien was probably never a serious contender for the honor ...



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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