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

Steel Making

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

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

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

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

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

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

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

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

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

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

Bessemer Process
The bessemer process consists of charging molten pig iron int...

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

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

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

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



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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