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Steel Making

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

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

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

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

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

Manganese
MANGANESE is a metal much like iron. Its chemical symbol is M...

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

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

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

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

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

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

The Forging Of Steel
So much depends upon the forging of steel that this operation...

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

The Influence Of Size
The size of the piece influences the physical properties obta...

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

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

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

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



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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