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Steel Making

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Annealing
There is no mystery or secret about the proper annealing of d...

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

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

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

The Thermo-couple
With the application of the thermo-couple, the measurement of...

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

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

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

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

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

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

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

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

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

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

The Modern Hardening Room
A hardening room of today means a very different place from ...

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...



Annealing In Bone






Category: ANNEALING

Steel and cast iron may both be annealed in granulated bone. Pack the
work the same as for case-hardening except that it is not necessary
to keep the pieces away from each other. Pack with bone that has
been used until it is nearly white. Heat as hot as necessary for
the steel and let the furnace cool down. If the boxes are removed
from furnace while still warm, cover boxes and all in warm ashes
or sand, air slaked lime or old, burned bone to retain heat as
long as possible. Do not remove work from boxes until cold.





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