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

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

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

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

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

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

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

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Corrosion
This steel like any other steel when distorted by cold worki...

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

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

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

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

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

Tensile Properties
Strength of a metal is usually expressed in the number of pou...



Tool Or Crucible Steel






Category: ANNEALING

Crucible steel can be annealed either in muffled furnace or by
being packed. Packing is by far the most satisfactory method as it
prevents scaling, local hard spots, uneven annealing, or violent
changes in shape. It should be brought up slowly to just above
its calescent or hardening temperature. The operator must know
before setting his heats the temperature at which the different
carbon content steels are hardened. The higher the carbon contents
the lower is the hardening heat, but this should in no case be
less than 1,450 deg.F.





Next: Annealing Alloy Steel

Previous: Annealing Of High-speed Steel



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