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

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

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

Impact Tests
Impact tests are of considerable importance as an indication ...

Quenching
It is considered good practice to quench alloy steels from th...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

Critical Points
One of the most important means of investigating the properti...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

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

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

Heating
Although it is possible to work steels cold, to an extent de...

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...



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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