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The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

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

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

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

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

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

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

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

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

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

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

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

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...



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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