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Steel Making

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

Hardening
Steel is hardened by quenching from above the upper critical....

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

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

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

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...

Drop Forging Dies
The kind of steel used in the die of course influences the he...

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

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

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

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

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

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

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



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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