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Steel Making

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

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

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

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

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

High Speed Steel
For centuries the secret art of making tool steel was handed ...

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

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

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

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

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

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

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

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

Armor plate makers sometimes use the copper ball or Siemens' ...

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

Annealing Method


Forgings which are too hard to machine are put
in pots with a little charcoal to cause a reducing atmosphere and
to prevent scale. The covers are then luted on and the pots placed
in the furnace. Carbon steel from 15 to 25 points is annealed at
1,600 deg.F. Nickel steel of the same carbon and containing in addition
3-1/2 per cent nickel is annealed at 1,450 deg.F. When the pots are
heated through, they are rolled to the yard and allowed to cool.
This method of annealing gives the best hardness for quick machining.

The requirements in the machine operations are very rigid and, in
spite of great care and probably the finest equipment of special
machines in the world, a small percentage of the product fails
to pass inspection during or at the completion of the machine
operations. These pieces, however, are not a loss, for they play
an important part in the hardening process, indicating as they do
the exact depth of penetration of the carburizing material and
the condition of both case and core.

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