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Steel Making

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

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

The Electric Process
The fourth method of manufacturing steel is by the electric f...

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

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

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

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

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

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

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

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

Compensating Leads
By the use of compensating leads, formed of the same materia...

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

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

Care In Annealing
Not only will benefits in machining be found by careful anne...

Impact Tests
Impact tests are of considerable importance as an indication ...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...



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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