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Steel Making

Annealing Method
Forgings which are too hard to machine are put in pots with ...

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

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

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

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

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

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

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

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

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 ...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...

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

Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

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

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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