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Steel Making

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

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

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

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

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

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

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

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

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

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

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

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

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

Manganese
Manganese adds considerably to the tensile strength of steel,...

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

Nickel
Nickel may be considered as the toughest among the non-rare a...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

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



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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