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Steel Making

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

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

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

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

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

Drop Forging Dies
The kind of steel used in the die of course influences the he...

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

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

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

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

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Hardening
The forgings can be hardened by cooling in still air or quen...

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

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

Hardening
Steel is hardened by quenching from above the upper critical....

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

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...



Cyanide Bath For Tool Steels






Category: HEAT TREATMENT OF STEEL

All high-carbon tool steels are
heated in a cyanide bath. With this bath, the heat can be controlled
within 3 deg. The steel is evenly heated without exposure to the
air, resulting in work which is not warped and on which there is no
scale. The cyanide bath is, of course, not available for high-speed
steel because of the very high temperatures necessary.





Next: Drop Forging Dies

Previous: Carburizing Low-carbon Sleeves



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