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Steel Making

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

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

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

Lathe And Planer Tools
FORGING.--Gently warm the steel to remove any chill, is parti...

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

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

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

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

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

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

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

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

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

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

Conclusions
Martien was probably never a serious contender for the honor ...

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



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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