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Steel Making

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

Tungsten, as an alloy in steel, has been known and used for a...

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

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

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

MANGANESE is a metal much like iron. Its chemical symbol is M...

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

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

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

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

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

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

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

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

High Speed Steel


For centuries the secret art of making tool steel was handed down
from father to son. The manufacture of tool steel is still an art
which, by the aid of science, has lost much of its secrecy; yet
tool steel is today made by practical men skilled as melters,
hammer-men, and rollers, each knowing his art. These practical
men willingly accept guidance from the chemist and metallurgists.

A knowledge of conditions existing today in the manufacture of
high-speed steel is essential to steel treaters. It is well for
the manufacturer to have steel treaters understand some of his
troubles and difficulties, so that they will better comprehend the
necessity of certain trade customs and practices, and, realizing
the manufacturer's desire to cooperate with them, will reciprocate.

The manufacturer of high-speed steel knows and appreciates the
troubles and difficulties that may sometimes arise in the heat-treating
of his product. His aim is to make a uniform steel that will best
meet the requirements of the average machine shop on general work,
and at the same time allow the widest variation in heat treatment
to give desired results.

High speed steel is one of the most complex alloys known. A
representative steel contains approximately 24 per cent of alloying
metals, namely, tungsten, chromium, vanadium, silicon, manganese,
and in addition there is often found cobalt, molybdenum, uranium,
nickel, tin, copper and arsenic.

Next: Standard Analysis

Previous: Tempering Colors On Carbon Steels

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