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Steel Making

The Forging Of Steel
So much depends upon the forging of steel that this operation...

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

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

Care In Annealing
Not only will benefits in machining be found by careful anne...

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

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

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

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

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

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

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

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

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

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

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

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

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

Air-hardening Steels
These steels are recommended for boring, turning and planing...



Steel Can Be Worked Cold






Category: THE FORGING OF STEEL

As noted above, steel can be worked cold,
as in the case of cold-rolled steel. Heat treatment of cold-worked
steel is a very delicate operation. Cold working hardens and strengthens
steel. It also introduces internal stresses. Heat-treatments are
designed to eliminate the stresses without losing the hardness
and strength. This is done by tempering at a low heat. Avoid the
blue range (350 to 750 deg.C.). Tempering for a considerable time just
under the critical is liable to cause great brittleness. Annealing
(reheating through the critical) destroys the effect of cold work.





Next: Forging High-speed Steel

Previous: Steel Worked In Austenitic State



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