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Steel Making

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

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

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

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

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

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

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

Crankshaft
The crankshaft was the most highly stressed part of the entir...

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

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

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

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

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

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

Hardening
The forgings can be hardened by cooling in still air or quen...

Hardening
Steel is hardened by quenching from above the upper critical....

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

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



Non-shrinking Oil-hardening Steels






Category: ALLOYS AND THEIR EFFECT UPON STEEL

Certain steels have a very low rate of expansion and contraction
in hardening and are very desirable for test plugs, gages, punches
and dies, for milling cutters, taps, reamers, hard steel bushings
and similar work.

It is recommended that for forging these steels it be heated slowly
and uniformly to a bright red, but not in a direct flame or blast.
Harden at a dull red heat, about 1,300 deg.F. A clean coal or coke
fire, or a good muffle-gas furnace will give best results. Fish
oil is good for quenching although in some cases warm water will
give excellent results. The steel should be kept moving in the bath
until perfectly cold. Heated and cooled in this way the steel is
very tough, takes a good cutting edge and has very little expansion
or contraction which makes it desirable for long taps where the
accuracy of lead is important.

The composition of these steels is as follows:

Per cent
Manganese 1.40 to 1.60
Carbon 0.80 to 0.90
Vanadium 0.20 to 0.25





Next: Effect Of A Small Amount Of Copper In Medium-carbon Steel

Previous: Properties Of Alloy Steels



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