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Steel Making

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

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

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

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

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

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

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

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

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

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

Annealing
There is no mystery or secret about the proper annealing of d...

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

The Forging Of Steel
So much depends upon the forging of steel that this operation...

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

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

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

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

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



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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