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Steel Making

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

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

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

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

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

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

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

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

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

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

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

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

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

Piston Pin
The piston pin on an aviation engine must possess maximum res...

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

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

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

Critical Points
One of the most important means of investigating the properti...



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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