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Steel Making

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

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

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

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

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

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

Drop Forging Dies
The kind of steel used in the die of course influences the he...

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

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

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

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

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

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

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

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

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

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...



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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