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Steel Making

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

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 ...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

The Modern Hardening Room
A hardening room of today means a very different place from ...

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

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

Critical Points
One of the most important means of investigating the properti...

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

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

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

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

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

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

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



Annealing






Category: ALLOYS AND THEIR EFFECT UPON STEEL

ANNEALING can be done by heating to temperatures ranging from 1,290
to 1,380 deg.F. and cooling in air or quenching in water or oil. After
this treatment the forgings will have a hardness of about 200 Brinell
and a tensile strength of 100,000 to 112,000 lb. per square inch.
If softer forgings are desired they can be heated to a temperature
of from 1,560 to 1,650 deg.F. and cooled very slowly. Although softer
the forgings will not machine as smoothly as when annealed at the
lower temperature.





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