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Steel Making

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

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

Quenching The Work
In some operations case-hardened work is quenched from the bo...

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

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

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

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

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

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

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

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

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

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

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

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

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

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...



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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