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Steel Making

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

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

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

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

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

The Forging Of Steel
So much depends upon the forging of steel that this operation...

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

Hardening
Steel is hardened by quenching from above the upper critical....

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

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

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

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

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

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

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

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest 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.





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