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Steel Making

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

Manganese
MANGANESE is a metal much like iron. Its chemical symbol is M...

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

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

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

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

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

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

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

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

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

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



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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