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   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Compensating Leads
By the use of compensating leads, formed of the same materia...

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

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

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Bessemer Process
The bessemer process consists of charging molten pig iron int...

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

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...

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

Care In Annealing
Not only will benefits in machining be found by careful anne...

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

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

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

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

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

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...



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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