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Steel Making

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

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

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

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

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

Lathe And Planer Tools
FORGING.--Gently warm the steel to remove any chill, is parti...

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

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

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

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

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

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

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Crankshaft
The crankshaft was the most highly stressed part of the entir...

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

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...



Affinity Of Nickel Steel For Carbon






Category: HEAT TREATMENT OF STEEL

The carbon- and nickel-steel
gears are carburized separately owing to the difference in time
necessary for their carburization. Practically all printed information
on the subject is to the effect that nickel steel takes longer to
carburize than plain carbon steel. This is directly opposed to
the conditions found at this plant. For the same depth of case,
other conditions being equal, a nickel-steel gear would require
from 20 to 30 min. less than a low carbon-steel gear.

From the quenching machines, the gears go to the sand-blasting
machines, situated in the wing of the heat-treating building, where
they are cleaned. From here they are taken to the testing department.
The tests are simple and at the same time most thorough.





Next: Testing And Inspection Of Heat Treatment

Previous: The Effect



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