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Steel Making

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

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

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

Quenching The Work
In some operations case-hardened work is quenched from the bo...

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

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

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

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

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

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

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

Annealing
There is no mystery or secret about the proper annealing of d...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

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

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

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

Connecting Rods
The material used for all connecting rods on the Liberty engi...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...



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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