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Steel Making

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

Crucible Steel
Crucible steel is still made by melting material in a clay or...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

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

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

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

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

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

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

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...



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.





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Previous: High-chromium Or Rust-proof Steel



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