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Steel Making

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

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

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

Compensating Leads
By the use of compensating leads, formed of the same materia...

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

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

Hardening
The forgings can be hardened by cooling in still air or quen...

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

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

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...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

Gears
The material used for all gears on the Liberty engine was sel...

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

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

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

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

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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