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Steel Making

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

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

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

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...

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

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

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

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

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

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

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

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

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

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

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

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

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



Instructions For Working High-speed Steel






Category: HIGH-SPEED STEEL

Owing to the wide variations in the composition of high-speed steels
by various makers, it is always advisable to follow the directions
of each when using his brand of steel. In the absence of specific
directions the following general suggestions from several makers
will be found helpful.

The Ludlum Steel Company recommend the following:

CUTTING-OFF.--To cut a piece from an annealed bar, cut off with
a hack saw, milling cutter or circular saw. Cut clear through the
bar; do not nick or break. To cut a piece from an unannealed bar,
cut right off with an abrasive saw; do not nick or break. If of
large cross-section, cut off hot with a chisel by first slowly
and uniformly heating the bar, at the point to be cut, to a good
lemon heat, 1,800 deg.-1,850 deg.F. and cut right off while hot; do not nick
or break. Allow the tool length and bar to cool before reheating
for forging.





Next: Lathe And Planer Tools

Previous: For Milling Cutters And Formed Tools



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