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Steel Making

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

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

Connecting Rods
The material used for all connecting rods on the Liberty engi...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

High Speed Steel
For centuries the secret art of making tool steel was handed ...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

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

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

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

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

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

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

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

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...



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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