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Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

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

High Speed Steel
For centuries the secret art of making tool steel was handed ...

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

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

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

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

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

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

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

Critical Points
One of the most important means of investigating the properti...

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

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

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

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

Chromium
Chromium when alloyed with steel, has the characteristic func...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

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

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



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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