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Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

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

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

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

Conclusions
Martien was probably never a serious contender for the honor ...

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

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

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

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

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

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

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

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

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...



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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