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Steel Making

Quenching
It is considered good practice to quench alloy steels from th...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

Manganese
Manganese adds considerably to the tensile strength of steel,...

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

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Gears
The material used for all gears on the Liberty engine was sel...

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

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

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

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

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

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

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

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

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

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

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



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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Previous: High-chromium Or Rust-proof Steel



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