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Testing And Inspection Of Heat Treatment
The hard parts of the gear must be so hard that a new mill f...

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

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

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

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

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

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

Heating
Although it is possible to work steels cold, to an extent de...

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

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

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

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

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

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

Hardening
The forgings can be hardened by cooling in still air or quen...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

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



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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Previous: High-carbon Machinery Steel



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