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

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

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

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

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

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

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

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

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

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...

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

Hardness Testing
The word hardness is used to express various properties of me...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

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

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...



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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