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

Steel Making

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

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

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

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

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

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

Nickel
Nickel may be considered as the toughest among the non-rare a...

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

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

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

Annealing Work
With the exception of several of the higher types of alloy s...

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

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

High Speed Steel
For centuries the secret art of making tool steel was handed ...

Lathe And Planer Tools
FORGING.--Gently warm the steel to remove any chill, is parti...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

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

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...



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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