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Steel Making

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

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

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

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

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

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

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

ANNEALING can be done by heating to temperatures ranging from...

This steel like any other steel when distorted by cold worki...

Testing And Inspection Of Heat Treatment
The hard parts of the gear must be so hard that a new mill f...

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

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

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

Armor plate makers sometimes use the copper ball or Siemens' ...

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

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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