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Steel Making

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

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

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

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

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

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

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

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

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

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

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

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

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...



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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