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Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

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

Sulphur
SULPHUR is another element (symbol S) which is always found i...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

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

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

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

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

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

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

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

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

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

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

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

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

Crucible Steel
Crucible steel is still made by melting material in a clay or...



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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