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

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

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

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

Sulphur
SULPHUR is another element (symbol S) which is always found i...

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

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

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

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

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

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

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

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

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

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

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

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



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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