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Steel Making

Bessemer Process
The bessemer process consists of charging molten pig iron int...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

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

Impact Tests
Impact tests are of considerable importance as an indication ...

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

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...

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

Heating
Although it is possible to work steels cold, to an extent de...

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

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

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

Manganese
Manganese adds considerably to the tensile strength of steel,...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...



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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