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Steel Making

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

Chromium
Chromium when alloyed with steel, has the characteristic func...

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

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

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

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

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

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

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

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

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

Nickel
Nickel may be considered as the toughest among the non-rare a...

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

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

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

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



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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