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Steel Making

Furnace Data
In order to give definite information concerning furnaces, fu...

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

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

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

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

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

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

Corrosion
This steel like any other steel when distorted by cold worki...

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

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

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

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

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

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

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...



The Penetration Of Carbon






Category: CASE-HARDENING OR SURFACE-CARBURIZING

Carburized mild steel is used to a great extent in the manufacture
of automobile and other parts which are likely to be subjected to
rough usage. The strength and ability to withstand hard knocks
depend to a very considerable degree on the thoroughness with which
the carburizing process is conducted.

Many automobile manufacturers have at one time or another passed
through a period of unfortunate breakages, or have found that for
a certain period the parts turned out of their hardening shops
were not sufficiently hard to enable the rubbing surfaces to stand
up against the pressure to which they were subjected.

So many factors govern the success of hardening that often this
succession of bad work has been actually overcome without those
interested realizing what was the weak point in their system of
treatment. As the question is one that can create a bad reputation
for the product of any firm it is well to study the influential
factors minutely.





Next: Introduction Of Carbon

Previous: Preparing Parts For Local Case-hardening



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