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   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

The Modern Hardening Room
A hardening room of today means a very different place from ...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

Care In Annealing
Not only will benefits in machining be found by careful anne...

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

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

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...

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

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

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

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

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

Quenching
It is considered good practice to quench alloy steels from th...

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

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...



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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