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Steel Making

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

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Vanadium has a very marked effect upon alloy steels rich in c...

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

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

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

Although it is possible to work steels cold, to an extent de...

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

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

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

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

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

SILICON is a very widespread element (symbol Si), being an es...

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

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

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

Annealing Of Rifle Components At Springfield Armory


In general, all forgings of the components of the arms manufactured
at the Armory and all forgings for other ordnance establishments
are packed in charcoal, lime or suitable material and annealed
before being transferred from the forge shop.

Except in special cases, all annealing will be done in annealing
pots of appropriate size. One fire end of a thermo-couple is inserted
in the center of the annealing pot nearest the middle of the furnace

and another in the furnace outside of but near the annealing pots.

The temperatures used in annealing carbon steel components of the
various classes used at the Armory vary from 800 deg.C. To 880 deg.C. or
1,475 to 1,615 deg.F.

The fuel is shut off from the annealing furnace gradually as the
temperature of the pot approaches the prescribed annealing temperature
so as to prevent heating beyond that temperature.

The forgings of the rifle barrel and the pistol barrel are exceptions
to the above general rule. These forgings will be packed in lime
and allowed to cool slowly from the residual heat after forging.

Next: Surface Carburizing

Previous: Annealing In Bone

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