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Molybdenum
Molybdenum steels have been made commercially for twenty-five...

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

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

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

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

Crankshaft
The crankshaft was the most highly stressed part of the entir...

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

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

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

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

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

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

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

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

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

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

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

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

The Modern Hardening Room
A hardening room of today means a very different place from ...



Heat Treatment Of Steel






Category: HEAT TREATMENT OF STEEL

Heat treatment consists in heating and cooling metal at definite
rates in order to change its physical condition. Many objects may
be attained by correct heat treatment, but nothing much can be
expected unless the man who directs the operations knows what is
the essential difference in a piece of steel at room temperature
and at a red heat, other than the obvious fact that it is hot. The
science of metallography has been developed in the past 25 years,
and aided by precise methods of measuring temperature, has done
much to systematize the information which we possess on metallic
alloys, and steel in particular.





Next: Critical Points

Previous: Blending The Compound



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