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Steel Making

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

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

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

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

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

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

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

Quenching The Work
In some operations case-hardened work is quenched from the bo...

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Connecting Rods
The material used for all connecting rods on the Liberty engi...

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

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

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

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

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

The Influence Of Size
The size of the piece influences the physical properties obta...

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

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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