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Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

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

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

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

Annealing
ANNEALING can be done by heating to temperatures ranging from...

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

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

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

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

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

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

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

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

Gears
The material used for all gears on the Liberty engine was sel...

Care In Annealing
Not only will benefits in machining be found by careful anne...

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

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



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.





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