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Air-hardening Steels
These steels are recommended for boring, turning and planing...

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

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

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

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

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

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

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

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

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

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

Annealing Work
With the exception of several of the higher types of alloy s...

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

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

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

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



High Speed Steel






Category: 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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