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   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

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

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

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

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

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

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

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

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

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

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

Testing And Inspection Of Heat Treatment
The hard parts of the gear must be so hard that a new mill f...

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

Alloying Elements
Commercial steels of even the simplest types are therefore p...

The Influence Of Size
The size of the piece influences the physical properties obta...

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

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...



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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