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   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

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

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

Hardness Testing
The word hardness is used to express various properties of me...

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

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

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

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

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

Piston Pin
The piston pin on an aviation engine must possess maximum res...

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

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

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

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

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

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

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Crankshaft
The crankshaft was the most highly stressed part of the entir...

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

Annealing
There is no mystery or secret about the proper annealing of d...



Annealing






Category: ALLOYS AND THEIR EFFECT UPON STEEL

ANNEALING can be done by heating to temperatures ranging from 1,290
to 1,380 deg.F. and cooling in air or quenching in water or oil. After
this treatment the forgings will have a hardness of about 200 Brinell
and a tensile strength of 100,000 to 112,000 lb. per square inch.
If softer forgings are desired they can be heated to a temperature
of from 1,560 to 1,650 deg.F. and cooled very slowly. Although softer
the forgings will not machine as smoothly as when annealed at the
lower temperature.





Next: Hardening

Previous: High-chromium Or Rust-proof Steel



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