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Steel Making

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

Chromium
Chromium when alloyed with steel, has the characteristic func...

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

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

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

Hardening
The forgings can be hardened by cooling in still air or quen...

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

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

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

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

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...



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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