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Steel Making

Chromium
Chromium when alloyed with steel, has the characteristic func...

Manganese
Manganese adds considerably to the tensile strength of steel,...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

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

High Speed Steel
For centuries the secret art of making tool steel was handed ...

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

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

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

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

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

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

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

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

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

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



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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