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Steel Making

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

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

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

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

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

Hardness Testing
The word hardness is used to express various properties of me...

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

Hardening
Steel is hardened by quenching from above the upper critical....

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

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

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

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

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

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

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

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

Hardening
The forgings can be hardened by cooling in still air or quen...

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

Testing And Inspection Of Heat Treatment
The hard parts of the gear must be so hard that a new mill f...



The Forging Of Steel






Category: THE FORGING OF STEEL

So much depends upon the forging of steel that this operation must
be carefully supervised. This is especially true because of the
tendency to place unskilled and ignorant men as furnace-tenders
and hammer men. The main points to be supervised are the slow and
careful heating to the proper temperature; forging must be continued
at a proper rate to the correct temperature. The bar of stock from
which a forging was made may have had a fairly good structure, but
if the details of the working are not carefully watched, a seamy,
split article of no value may easily result.





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