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Steel Making

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

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

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

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

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

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

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

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

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

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

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

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

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

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

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

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

Conclusions
Martien was probably never a serious contender for the honor ...

Critical Points
One of the most important means of investigating the properti...



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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